Sleeve Grouting Research Articles

Research on the connection performance and micro-hydration mechanism of super-performance grouting material for prefabricated component connections

Abstract The performance of grouting material determines the connection reliability of prefabricated components and the overall safety of the structure. In order to realize the rapid connection of prefabricated components, improve the construction efficiency and improve the quality of component connection. The research group has developed a grouting material with fast early strength improvement and high late strength. The formation mechanism was analyzed by scanning electron microscopy. The reliability of grouting material was verified by uniaxial tensile test of sleeve grouting connector. The results show that : CH, AFt and C-S-H are formed inside the grouting material, and the cementing system is dense inside. The skeleton formed by AFt inhibits the shrinkage of the system, which can provide support for the later compressive and flexural strength. Uniaxial tensile test results and theoretical analysis. The external reinforcement of the sleeve is broken, and the bonding performance between the grouting material and the reinforcement inside the sleeve is reliable. The internal bond stress is far less than the failure stress of the connector, which is about 50 % of the failure stress.

Comparative Analysis of the Performance and Study of the Effective Anchorage Length of Semi-Grouted and Fully-Grouted Sleeve Connection

Based on the insufficient data on bonding performance and effective anchorage length of sleeve grouting in assembled structure. Combining the existing studies, the sleeve grouting joint test for the static unidirectional tensile test was designed, and the influencing factors are reinforcement diameter and reinforcement anchorage length. Then, the failure mode, load-displacement relationship, energy consumption capacity and bearing capacity of the grouting sleeve connection are analysed, and the stress mechanism of the specimen in the one-way tensile state is expounded. This paper considers the actual damage state of the joint, according to the failure of the reinforcement outside the joint and the sleeve; referring to the reinforcement-concrete bond strength research theory, the effective anchorage length formula is proposed. When the steel bar is pulled out, the bond strength and bearing capacity mainly depend on the effective anchorage length. However, when the specimen breaks the steel bar outside the joint, it depends on the material performance of the steel bar itself. The research results of this paper can lay a theoretical foundation for the application of sleeve grouting joints.

Study on seismic behavior of prefabricated shear wall with pressed cone sleeves (PCSs)

Current prefabricated shear walls predominantly utilize grouting sleeves for connection, whereas an in-depth review and summary of the current state of research have indicated a 26.7 % construction defect rate in these sleeves due to present construction techniques. To solve the problem of defects, this study introduced a novel prefabricated shear wall design using vertical rebars connected via pressed cone sleeves (PCSs). Three reinforced concrete (RC) prefabricated shear walls with different vertical rebars connected and tested under cyclic horizontal load and constant vertical load to study the seismic performance, including cast-in-situ shear wall (specimen SW1), partial sleeve grouting defects shear wall (specimen SW2) and shear wall with vertical rebars connected via PCSs (PCSs-SW, specimen SW3). Key performance indicators such as failure modes, hysteresis curves, shear capacity, stiffness, ductility, energy dissipation capacity and stress characteristics were evaluated. The results of the tests revealed that SW1 and SW3 failures resulted from a combination of bending moment and shear force, whereas SW2 failure in the area of grout sleeve defects connection. Compared to the specimen SW2, the SW3 owns better shear bearing capacity, ductility, stiffness, energy dissipating capacity and reliable seismic performance. Meanwhile, SW3 and SW1 exhibited the similar seismic performance, can primarily achieve the effect of “equivalent cast-in-situ”. Finite element (FE) model of specimen SW3 were developed by using software ABAQUS, and the precision and utility of FE models verified by testing data. Using proposed FE models, an extensive parametric study was conducted to investigate the influencing factors on the seismic performance of precast fabricated RC shear wall, including axial compression ratio, concrete strength, vertical rebar strengths and vertical rebar diameters.

Simplified Modeling Method for Prefabricated Shear Walls Considering Sleeve Grouting Defects

The sleeve grouting connection is the most common form of vertical connection for prefabricated shear walls. However, during construction, this type of connection is prone to defects such as insufficient anchorage length of reinforcement, deviation of reinforcement, and insufficient amount of sleeve grouting, which significantly impact the integrity and seismic performance of the prefabricated shear wall structure. The finite element analysis of the prefabricated shear wall with sleeve grouting connection is still based on solid element modeling. This method has the disadvantages of complex models and low computational efficiency. In this paper, a simplified modeling method for prefabricated shear walls considering sleeve grouting defects was proposed to address this issue. Firstly, the equivalent constitutive relationship of the sleeve grouting defect connector was constructed based on the uniaxial tensile test of the existing sleeve grouting defect connector, and the T3D2 element was used to simulate the sleeve grouting connector. Then, the mechanical behavior of the horizontal joint between the shear wall and the foundation beam was simulated by the cohesive force model, and the prefabricated shear wall models with sleeve grouting defects were established. The accuracy of the simplified modeling method was verified by comparing the experimental results and numerical simulation results of the seismic performance of the prefabricated shear wall with sleeve grouting defects. The results showed that the hysteresis curve, skeleton curve, and failure mode of the numerical simulation were in good agreement with the test results. However, the stiffness of the concrete degenerated rapidly due to the apparent development of plastic-damaged concrete, which made the falling section of the hysteresis curve of the numerical simulation different from that of the test. The proposed simplified modeling method can be further applied to the performance study of prefabricated shear walls with sleeve grouting defects and can provide a reference for structural performance evaluation, design optimization, and construction quality control to a certain extent.

Experimental Study on Optimizing Grouting Material Ratio for Rebar Sleeve Connections

In response to the inadequate performance reliability of existing prefabricated sleeve grouting materials, this study used an orthogonal experimental design method to prepare 16 sets of grouting materials based on C52.5 cement and ordinary river sand, with different water-cement ratios and varying amounts of additives including silica fume, defoamers, water reducers, and expansive agents. The effects of silica fume, defoamers, water reducers, expansive agent dosage, and water-cement ratio on the compressive strength, vertical expansion rate, and fluidity of the grouting material were studied. Based on the experimental results and comprehensive analysis, a formulation for high-performance grouting material with high reliability was determined, providing a greater safety margin for practical engineering applications.

Defect Detection in Grouting Sleeve Grouting Material by Piezoelectric Wave Method

The construction defects in grouting sleeves can jeopardize the safety of precast reinforced concrete structures. Thus, efficient and accurate defect detection is critical in engineering construction. In this paper, a defect detection method based on piezoelectric wave theory was proposed. Two piezoelectric ceramics were arranged within the grouting sleeve. One piezoelectric ceramic was affixed on the top of the steel bar, while the other was embedded in the grouting material, serving as the driver and sensor, respectively. The compactness defects, air cavity defects, steel anchoring defects, and water–binder ratio defects were set in the grouting sleeves, and the trends in time domain signals and signal evaluation indicators based on the wavelet packet total energy value (WPTEV) of different specimens were investigated. Based on the WPTEV, the evaluation index (EI) was proposed. In addition, the effect of the grouting material’s age on the piezoelectric wave signal was verified. Furthermore, the influence of grouting material defects on signals was simulated in ABAQUS, and the time domain signals and wavelet packet energy of sensor signals for specimens with varying defect dimensions were evaluated. The results showed that: (1) The defects in the grouting materials reduced the stress waves propagated through the grouting materials, resulting in a decrease in attenuation and an increasing trend in the signal; (2) The peak-to-peak values of piezoelectric ceramic sensors and the WPTEV of the signal increased with the degree of defects, and the WPTEV was more pronounced. For specimen M68, the WPTEV was 3.3 times that of the healthy specimen, however, the peak-to-peak value was only 2.3 times that of the healthy specimen; (3) The degree of defects was accurately determined by the defect evaluation index (EI) based on the WPTEV; (4) The signal was significantly attenuated with the increase in the age of the grouting material, especially in the first three days, and finally the signal achieved a stable value; (5) The numerical simulation indicated that the defects in the length and thickness of the air cavity in the grouting material were efficiently detected by the proposed piezoelectric arrangement in this study.

Research on the Sleeve Grouting Fullness Testing of Prefabricated Structures Based on Piezoelectric Method

The traditional methods for testing the sleeve grouting fullness of prefabricated structures generally face the technical challenges such as high detection cost and inability to detect in real-time. In order to solve these technical challenges, the detection method and instrument based on the piezoelectric testing principle were developed. Through the electrical properties tests of grouting materials and grouting-leakage cycle tests of transparent sleeves, the effectiveness of the piezoelectric method for testing grout leakage defects was analyzed. The research results indicate that measuring the voltage changes before and after the piezoelectric sensor is wrapped in the grouting slurry can effectively evaluate the sleeve grouting fullness. The voltage measured by the piezoelectric sensor is significantly reduced after the sensor is wrapped in the grouting material (full grouting). Then the voltage increases after grouting leakage (insufficient grouting), and decreases again after supplementary grouting (full grouting). Moreover, whether the piezoelectric sensor is placed horizontally or vertically, the voltage shows obvious changes, indicating that the piezoelectric method is less affected by the sensor laying mode. Considering that the vertical embedding method is more stable for piezoelectric data, it is recommended to use the vertical laying mode in engineering projects. Furthermore, through the prefabricated model tests, the threshold for judging grouting fullness using piezoelectric method was determined. The test results show that the threshold for determining the grouting fullness using piezoelectric method can be set to 0.40. That is to say, when the voltage value is less than 0.40, it can be determined as complete grouting, otherwise it can be determined as insufficient grouting. The case studies results indicate that the piezoelectric method meets the quality control requirements during the grouting process of prefabricated structural sleeves. The research results provide a new approach and practical reference for solving the quality detection problem of sleeve grouting.

Time Reversal Method for Lamb−Wave−Based Diagnostics of Multiple−Sleeve Grouting Connections

The grouting quality of the grouting sleeve connector is crucial for ensuring the stability of prefabricated building components. In practical engineering, the grouting sleeve is often arranged with multiple sleeves, and there is no feasible nondestructive testing method for testing the complex arrangement of the sleeve grouting joints in the embedded state. Building upon the feasibility of nondestructive detection of single socket grouting connectors, this study discusses the feasibility of defect detection and the severity of defects. Simulation results are used to investigate the choice of the best excitation signal. For different simulated damage cases, it is proven that the selected damage index can be very sensitive, and both the location and the extent of the damage can be detected successfully. The results demonstrate that with the section injury rate ranging from 10% to 40%, the reverse focus peak decreased from 20% to 60% compared to no injury. The effectiveness of the Lamb−wave−based time reversal method in detecting the internal grouting defects of multiple grouting sleeve joints is proven. This paper focuses on the detection study of the Lamb−wave−based time reversal method and proves its ability to perform the detection task effectively and accurately.

Seismic performance of fabricated shear wall structures with design defects

The sleeve grouting connection stands as a customary method for interlinking precast shear walls within assembly construction. In the realm of on-site construction, achieving complete avoidance of sleeve grouting defects remains a challenge. In an endeavor to scrutinize the seismic performance and the subsequent progression of damage within shear wall structures riddled with sleeve grouting defects, a two-story shear wall model was formulated through the utilization of ABAQUS software. Employing numerical simulation of low cycle reciprocating loading, the study was conducted across three distinct operational contexts: absence of defects, localized defects, and comprehensive defects. The outcomes proffer insight into the exacerbated concrete damage triggered by defects present within shear wall structures. These defects contribute to premature yielding of reinforcement and a consequent amplification in the plastic length of the reinforcement, consequently impeding the harmonized deformation of reinforcement and concrete. The “pinch phenomenon” is particularly conspicuous within fully defective structures during the nascent loading stages. As cyclic loads mount, the hysteretic curves of both defective and defect-free structure tend to converge. While the skeleton curve of structures, whether grouting defects are present or not, demonstrates remarkable parity prior to reaching the pinnacle reaction force, the defective structure displays premature waning in reaction force. This, in turn, curtails the efficacy of early warning concerning structural deformation and jeopardizes safety. In light of the foregoing analysis, it is manifest that the presence of sleeve grouting defects significantly impacts the seismic performance and subsequent damage trajectory of shear wall structures. As a corollary, addressing and mitigating these defects during on-site construction emerge as imperative prerequisites for upholding the comprehensive safety and stability of the structure.

Study of the tensile properties of the original bamboo sleeve grouting joints

As an environmentally friendly and renewable green building material, bamboo has an increasingly broad application prospect under the requirement of promoting low-carbon sustainable development. However, due to the natural properties of hollow, thin-wall and anisotropy of raw bamboo material, the study of raw bamboo joints has been a challenge in the development of raw bamboo structures. This manuscript presents a novel bamboo sleeve grouting connection. 13 connection specimens were fabricated to conduct axial tensile tests and establish a finite element simulation. The experimental and finite element results indicate that increasing the number of bolts, bonding depth, and dimensions of the bamboo tube section can improve the tensile bearing capacity of the connection. Among them, the increase in the number of bolts has the most obvious effect on the connection lifting, which can increase the ultimate bearing capacity by up to 322.19%. Ultimately, theoretical calculation methods for the connections were proposed based on the principles of elastic-plastic mechanics and rigid-plastic mechanics, respectively. These theoretical calculation methods exhibit an elastic-plastic verification coefficient ranging from 0.80 to 1.09 and a rigid-plastic verification coefficient ranging from 0.88 to 1.17. With relatively high precision in accordance with experimental and simulation outcomes, these theoretical calculation methods furnish a solid theoretical foundation for the design methodology of the connections in bamboo sleeve grouting.

Bond performance prediction model of defective grout in post-fire sleeve connections under cyclic loading

Sleeve grouting defects are one of the most common issues for the prefab structure and may cause the significant safety hazards for the assembled buildings. In seismic zones, especially for the defective assembled buildings have experienced fires, the post-fire seismic performance of connection joints needs to be adequately assessed to guide post-disaster rehabilitation work. To this end, the prediction model of a bonding performance of the defective grout in sleeve under cycling loading after a fire is essential. In this paper, the defective grouted sleeve connection specimens were fabricated and studied under cycling loading tests after the standard fires with consideration of the effect of the protective layer of concrete. The results show that the defect-induced instability in the sleeve restraint system is a significant cause of the grout bonding failure after fires. With a defect rate of 10%, the qualified fire resistance time for the seismic zone joints under the instable condition of restraint system was shortened by at least 30 min compared to the stable restraint system, and the qualified fire resistance temperature was reduced by at least 240 ℃, accordingly. Once the defect rate is not less than 30% and the fire time is less than 30 min, no matter what the defect type of the grout sleeves is, the code requirements for seismic zones would not be applicable and some certain implementations should be taken to remedy the situation. Furthermore, the degradation of ultimate bond strength of grout under repeated post-fire loading shows exponential relationship with the defect rate, while the bond stiffness decreases linearly with defect rate. Under the cyclic loading condition, the influence of high temperature and defect on the degradation of the grouting material is not simply combined; while, the high temperature and defect will be coupled to intensify the degradation of the grouting material. A unified prediction model for the bond strength of defective grouting material under cycling loading at the ambient temperature and after fire was developed. The predicted results agreed with the experimental results; and the prediction model can provide the guidance for the performance assessment of defective grouted sleeve joints at ambient temperature and after fire in seismic zones.

Experimental and numerical study on detection of sleeve grouting defect with impact-echo method

Grouted sleeve connections are widely used for vertical connections in precast concrete shear walls. Grouting defect is unavoidable in construction and may affect the performance of the joint in service. A two-step research was carried out to investigate the effectiveness of impact-echo method in the detection of grouting defects in sleeves. First, a mechanistic analysis of the differences in the propagation paths of impact stress waves in grout-compact sleeve concrete assemblies and grout-deficient sleeve concrete assemblies was carried out. Second, finite element models of the assemblies with different sleeve arrangements were established, and the FFT decomposition of the impact-echo signals was carried out with the impact point and reception point spacing, impact hammer diameter, sleeves position and thickness of the assemblies as variable groups. At the same time, the difference in thickness frequencies of grout-compact and grout-deficient assemblies was discussed. Results indicate that the presence of grouting defects can be effectively detected by impact hammers of different diameters for centrally arranged single sleeves, making qualitative analysis of grouting defects possible. For side-sleeve and double-sleeve specimens, there is uncertainty in the detection of grouting defects and therefore the impact-echo method needs further study. Furthermore, an amplitude discrimination method for defect location in double-sleeve specimens is proposed. The findings of this study can provide a reference for quality inspection of grouting sleeve connection.

Nonlinear parametric assessment of modular prefabricated steel-reinforced concrete composite column subjected to earthquake loading

This study is intended to propose a novel bolted off-site connection for prefabricated steel-reinforced concrete composite (PSRC) column to overcome significant problems involved in the traditional precast concrete connections, such as its complicity under compacted sleeve grouting and insufficient post-cast concrete vibration. Within the context of the study, the seismic characteristics such as failure model, stiffness, and energy dissipation of five PSRC columns subjected to different axial compression and shear-to-span ratios were investigated by conducting low reversed cyclic tests. Thereafter, the accuracy of multiple finite element models (FEM) of the test specimens was verified against the experimental results. In general, the research outcomes showed that the PSRC column has a simple connection structure, efficient assembly, good bearing capacity, and hysteresis characteristics. Under the influence of different parameters, the failure position was located at the middle connection, which was the key to the overall seismic performance. Moreover, it was found that the axial compression and shear-span ratios significantly affect the seismic performance of the joints. The stiffening plate thickness, the cover plate thickness, the square steel tube width-thickness ratio and the middle connection position height greatly impacted the bearing capacity but had an ignorable influence on the ductility, energy consumption, and performance degradation.

Detection of Sleeve Grouting Compactness Based on Acoustic Emission Technology

Sleeve grouting compactness has a significant effect on the mechanical properties of rebar connections. However, a detection method for the grouting compactness inside the sleeve is still lacking. Therefore, the aim of this paper is to propose a new acoustic emission (AE) detection technology for horizontal defects and vertical defects in sleeves with different grout compactness. The basic waveform characteristic of the AE signal is analyzed. The results show that the count of acoustic emission signals decreases with the increase of grouting compactness, and the reduction rate of vertical defects is larger than that of horizontal defects. The acoustic emission waveform is further processed through wavelet packet decomposition. It is found that with the increase of grouting compactness, the composition of approximately 125-187.5 kHz in the signal is accelerated to approximately 62.5-125 kHz. The grouting compactness index is constructed by wavelet packet energy ratio. With the increase of grouting compactness, the compactness index decreases exponentially, indicating that the presence of defects can greatly reduce the attenuation of elastic wave energy. The compactness index is highly consistent with the size of defects and has little relationship with the distribution of grout materials. Experiments show that the proposed method is effective when grout defects reach a certain degree and provides a new method for sleeve grouting compactness detection.

Study of mechanical properties of grouting defective sleeve

When sleeves are grouted at the construction site, grouting defects occur inside the sleeves owing to the structure of the grout sleeve, plugging time of the grout outlet hole, and connection form of the sleeve. Grouting defects reduce the connection strength of grout sleeves and further affect the safety performance of assembled building structures. In this study, the failure modes of grout defects and their influencing factors were fully investigated, which provides guidelines for the standardization of sleeve grouting construction. First, a uniaxial tensile test was performed on 33 grouting defect specimens to study the mechanical properties of the grouting defect. Second, the Concrete damaged plasticity (CDP) and Brittle Cracking (BC) constitutive models of grout were considered and optimized, and the corresponding numerical models were established to further analyze the failure modes of sleeve grouting. The numerical analysis results were compared with the test results. The comparison results show that adopting the optimized CDP constitutive model in the numerical simulation is more consistent with the test results. Finally, the stress mechanism of the grout sleeve was theoretically analyzed, and the calculation equation for the anchorage length was improved. The experimental study revealed that the ultimate bearing capacity and displacement of the specimen were affected by the specimen size, and the large-size specimen was more prone to pull-out failure. In addition, theoretical analysis showed that the specimen was in a safe state when the anchorage length of the rebar was greater than 6d. Based on the investigation results, the improved anchorage length equation can be used to calculate the anchorage length of the grout sleeve in sleeve grouting construction. Moreover, the middle and lateral grout defects of the grout sleeve should be focused on in sleeve grouting construction to ensure the quality of sleeve grouting.

Experimental study on the mechanical behavior of HTRB600E steel sleeve grouting based on UHPC

Eight HTRB600E steel sleeve grouting joint specimens filled with ultra-high performance concrete (UHPC) grouting material were fabricated for monotonic tensile testing. The effects of the grouting material mixing ratio and steel bar anchorage length on the mechanical properties of the connector joint specimens were investigated. The failure modes included rebar tensile fracture and rebar slip failure. The flexural performance, compressive performance and residual displacement of UHPC grouting material were significantly improved with the addition of steel fiber. However, the difficulty of grouting work increased with the addition of steel fiber. Increasing the anchorage length of rebar can significantly enhance the specimen bearing capacity but reduce the average bond strength. When UHPC is used as the grouting material, the recommended anchorage length of HTRB600E steel is at least 7d. As demonstrated by the test results, for the simulation of steel sleeve grouting joint monotonic tensile tests, an effective finite element (FE) model was established in ABAQUS.

Characterization of Damage Progress in the Defective Grouted Sleeve Connection Using Combined Acoustic Emission and Ultrasonics.

The grouted sleeve connection is one of the most widely used connections for prefabricated buildings (PBs). Usually, its quality can have a significant impact on the safety of the whole PB, especially for the internal flaws that form during sleeve grouting. It is directly related to the mechanical performance and failure behavior of the grouted sleeve. Therefore, it is essential to understand the damage progression of the defective grouted sleeve connection. However, destructive testing is the mainstream measure to evaluate the grout sleeves, which is not applicable for in situ inspection. Therefore, this paper proposes a combined acoustic emission (AE) and ultrasonic testing (UT) method to characterize the damage progress of a grouted sleeve with different degrees of internal flaws under tensile loading. The UT was conducted before loading to evaluate the internal flaws. Additionally, the AE was used as the processing monitoring technique during the tensile testing. Two damage modes were identified: (i) brittle mode associated with the rebar pullout; (ii) ductile mode associated with the rapture of the rebar. The UT energy ratio was selected as the most sensitive feature to the internal flaws, both numerically and experimentally. The AE signatures of different damage phases and different damage modes were determined and characterized. For the brittle and ductile damage modes, two and three phases appeared in the AE activities, respectively. The proposed combined AE and UT method can provide a reliable and convenient nondestructive evaluation of grouted sleeves with internal flaws. Moreover, it can also characterize the damage progress of the grouted sleeve connections in real-time.

Numerical simulation and analysis of fully-grouted sleeve connection and two special points at elevated temperatures

Fire is one of the main objects of study at the cutting edge of the research on disaster prevention and mitigation in structures. In the event of a fire, the mechanical properties of the structural material will be significantly reduced, resulting in serious consequences. This paper simulates the tensile properties of sleeve grouting members at five different temperatures, to contribute to the research here. The simulated member stress-strain curves fit well with the corresponding experimental results. The paper introduces constitutive models of concrete, steel, and sleeve. Beyond that, a feasible finite element model of the grouted sleeve is proposed. Two special points’ (yield point, ultimate point) coordinate formulas which are related to different temperatures (25–1000 °C) are presented. It indicates the regularity of fully-grouted sleeve tensile force-displacement curves in various temperatures. Meanwhile, the research content provides the basis for further research on reinforcing bars spliced by grout-filled coupling sleeves.

Experimental study on the effect of grouting volume on the tensile performance of offset semi-grouted couplers

Research results have shown that the mechanical properties of sleeve grouting connections are related to the diameter of the rebar, the sleeve, the grout, the temperature and the loading method, but research on the factor of grout volume needs to be further developed. Therefore, this paper considers the effects of three grouting volumes (50%, 75% grouting and 100% full grouting) on the tensile properties of the joint under the offset condition of the rebar. A total of 22 uniaxial tensile tests on semi-grouted steel sleeve connection specimens were carried out, mainly to study the damage morphology, load-displacement relationship, stiffness and the strain change law on the surface of the rebar and the sleeve under different grouting amount, etc. The stress mechanism of the specimens in the tensile condition was analysed, and the effective bond length calculation model was proposed with reference to the steel-concrete bond strength research theory, and the formula for calculating the maximum bond stress related to the effective anchorage length was obtained. Studies have shown that the grouting amount affects the load bearing capacity and stiffness, and that the quality of the specimen joint is reliable when the grouting volume reaches more than 75% of the design grouting volume.

Experimental investigation on seismic behaviors of precast concrete shear walls with sleeve grouting defects

The grouted sleeve connector is one of the most widely used connections in precast concrete shear wall structures. Due to the technology limit of the assembly workers, the sleeve grouting often has defects, which could significantly weaken their practical performance. Only considering the effect of defects on the bearing capacity of the sleeve connector cannot simulate the effect of defects in actual engineering. To this end, an experiment was carried out to investigate the seismic performance of precast concrete shear walls with sleeve grouting defects. Four full-scale precast concrete shear walls with different defect levels of insufficient grouting were designed and tested under cyclic loads. The development of concrete cracking, failure mode, hysteresis features, load-bearing capacity, stiffness degradation, structural ductility and energy-dissipation capacity are analyzed to reveal the influence of the sleeve grouting defects on precast concrete shear walls. The test results indicated that with the increase of the defect level, the opening gap between the bottom of the wall and the top of the foundation beam widened, and the failure mode changed from tensile fracture of reinforcing steel bar to anchorage failure of the tensile reinforcement on the defective side. Meanwhile, as the level of grouting defects increased, the bearing capacity decreased, and the specimen failed prematurely. The effect of the grouting defects on cracking load was minor, while they had a significant influence on the yield bearing capacity, peak bearing capacity and ultimate bearing capacity. The experimental results also indicated that the grouting defects caused the weakening of the stiffness, ductility and energy dissipation of the precast concrete shear walls. The presented work could be used for defect prevention and evaluation of precast concrete shear walls with sleeve grouting defects.