Reinforced Concrete Pavement Research Articles

Machine Learning Applications for Predicting Faulting in Jointed Reinforced Concrete Pavement

Machine Learning Applications for Predicting Faulting in Jointed Reinforced Concrete Pavement

Blast Resistance of Retrofitted Unreinforced Masonry Arch Bridge with Reinforced Concrete Pavement and Infill Replacement

Blast Resistance of Retrofitted Unreinforced Masonry Arch Bridge with Reinforced Concrete Pavement and Infill Replacement

Strategies for Managing an In-Service Continuously Reinforced Concrete Pavement in Illinois

Strategies for Managing an In-Service Continuously Reinforced Concrete Pavement in Illinois

Machine Learning-Based Prediction of International Roughness Index for Continuous Reinforced Concrete Pavements

Machine Learning-Based Prediction of International Roughness Index for Continuous Reinforced Concrete Pavements

Application of recycled crushed glass in road pavements and pipeline bedding: An integrated environmental evaluation using LCA

The study aims to conduct a comprehensive life cycle assessment (LCA) of mixed glass waste (MGW) recycling processes to quantify the environmental impacts of crushed glass as a partial substitute for virgin aggregate. Upstream washing, crushing, and sorting conducted at material recycling facilities (MRF) are the prime activities to assess whether reprocessed MGW in pavement construction is an alternate feasible solution. None of the previous studies explicitly account for the relative uncertainties and optimization of waste glass upstream processes from an environmental perspective. The study calculates environmental impacts using the LCA tool SimaPro considering design factors attributed to transportation, electricity consumption, use of chemicals, and water for reprocessing glass waste. Relative uncertainties of design variables and the national transition policy (2021−2030) from non-renewable to renewable energy sources have been validated by performing detailed Monte Carlo simulations. The correlation coefficients (r = 0.64, 0.58, and 0.49) of successive variables explain how the higher environmental gains of the glass recycling process are outweighed by diesel, energy consumption, and transportation distances. Compared to natural quarry sand, the recycled glass aggregate produced through crushing and recycling of its by-products reduces CO2eq emissions by 16.2 % and 46.7 %, respectively. The need for a washing line at the plant, in addition to crushing, results in a higher environmental impact over natural sand by 90.1 % and emphasizes the benefits of collecting waste glass through a separate bin, hence avoiding contamination. The result indicates that the benefit of lowering emissions varies significantly when considering waste glass landfilling. Moreover, this study evaluates the potential impacts on asphalt and reinforced concrete pavements (RCP) with 5 %, 10 %, 15 %, and 20 % replacement of natural sand with recycled glass aggregate. The LCA emphasizes the limitations of energy-intensive waste glass reprocessing. The obtained results and uncertainty analysis based on primary MRF data and recycled product applications provide meaningful suggestions for a more fit-for-purpose waste management and natural resource conservation.

Dynamic Response of Reinforced Recycled Aggregate Concrete Pavement under Impact Loading

Airport runway pavements often undergo the direct impact of aircraft landings. For the purposes of designing the structure, it is of great importance to know about the dynamic response of the pavement and its behavior under impact loading. However, the dynamics and failure mechanisms of reinforced recycled aggregate concrete pavements subjected to impact loading are seldom explored in the literature. For this purpose, four reinforced recycled aggregate concrete pavements with different thickness and ratios of reinforcement, and one reinforced normal concrete pavement, were manufactured and tested under impact loading using the drop-weight impact frame system. The impact force characteristics, crack patterns, deformation responses, and strain developments of reinforced concrete pavements subjected to impact loading were evaluated and compared. The above-mentioned study revealed that with an increase in the reinforcement ratio, both the deformation and the steel strain were reduced. Increasing the thickness would reduce the degree of damage and the impact force of reinforced concrete pavement (RCP) but increase the deformation. The results show that under the same compressive strength, the dynamic performance of the reinforced recycled aggregate concrete pavement was worse than that of the reinforced normal concrete pavement because of its lower elastic modulus and weaker interfacial transition zone. The dynamic performance of reinforced recycled aggregate concrete pavement could be improved by increasing the thickness and reinforcement ratio. The use of recycled aggregate concrete (RAC) in RCP is a technically feasible application of the material within the scope of this experimental study.

Polymer Fiber Reinforced Concrete Pavements

Abstract: The old method for using the traditional bituminous pavements have to be needs for continuous maintenance and repair work .In India there are several advantages of cement concrete pavements over bituminous pavements because of india has to leading growth country than other. This paper explains on POLYMER FIBRE REINFORCED CONCRETE PAVEMENTS, which is a recent advanced in the field of reinforced concretepavement in designs. In this project showing that how can Fibers help to improve the ductility performance, pre-crack tensile strength, fatigue strength, impact strength and shrinkage cracks. FRC satisfies two of the much demanded requirements of pavement material in economy and reduced pollution. Fibre reinforcement pavement has to reduce the cost of additional maintenance required on concreted pavement. It is ecofriendly and long life sustainability pavement.

Slab-Base Interface Friction Evaluation for Continuously Reinforced Concrete Pavement

Slab-Base Interface Friction Evaluation for Continuously Reinforced Concrete Pavement

Effect of adding additional Carbon Fiber on Piezoresistive Properties of Fiber Reinforced Concrete Pavements under Impact Load

Multifunctional Cementitious Composite (MCC) characteristics are directly related to the type and dosage of the Electrically Conductive Materials (ECMs) reinforcing the relevant concrete matrices. This study investigated the electro-mechanical capacities of fiber reinforced concrete pavement (FRCP) with and without the addition of micro scale-carbon fiber (CF). The impact energy of FRCP under compacted load was evaluated initially; then, the effects of 0.5% and 1% content by volume of CF on the piezoresistivity capacities of FRCP were investigated under applied impact load. This type of load is the most common force causing long-term rigid pavement deterioration. Obtained results showed that the use of a hybrid fiber (micro-scale carbon fiber 0.5% and macro-scale steel fiber 1% by volume) enhanced the impact strength (impact energy) due to CF’s resistance to micro-cracks. The developed FRCP showed good results in terms of self-sensing under compact load with both 0.5 and 1.0% by volume of CF.

Continuously Reinforced Concrete Pavement Cracking Patterns and Properties with Internal Curing and Active Cracking

Transverse cracking in continuously reinforced concrete pavement (CRCP) develops over time and may exhibit irregular patterns such as cluster cracks, Y-shaped cracks, and divided cracks. These undesirable cracking patterns can increase the probability of premature spalling and punchouts. Ideally, a uniform transverse cracking pattern with small crack widths leads to favorable long-term performance in CRCP. An experimental field project was constructed with internally cured concrete and active cracking to control crack initiation timing, patterns, and properties. Prewetted fine lightweight aggregate was used for internal curing, and edge notches of 2 in. depth and 2 ft length every 4 ft along the test section were sawcut for active crack control. The three experimental CRCP sections in Illinois were monitored for crack spacing, crack width, and formation of undesirable cracks over a 4-year period. Internally cured concrete significantly reduced the undesirable crack patterns relative to the control section. Internally cured concrete coupled with active crack concrete produced superior crack patterns and properties, that is, uniform crack spacing of 3.6 ft without cluster cracks, 0.2 mm surface crack width, and only a small number of undesirable cracks. Active crack control produced a higher number of transverse cracks near the terminal joint (last 150 ft) compared with the control section. Moisture and temperature management with active crack control during construction of the CRCP provided a desirable crack pattern and properties that should increase the overall service life of a pavement.

Layer Composition of Continuously Reinforced Concrete Pavement Optimized Using a Regression Analysis Method

A procedure for determining the optimized composition of layer properties for a continuously reinforced concrete pavement (CRCP) system was constructed using field tests, finite element (FE) analysis, and regression analysis methods. The field support characteristics of a rigid pavement system were investigated using a falling weight deflectometer (FWD), dynamic cone penetrometer (DCP), and a static plate load test. The subgrade layer exhibited a more uniform condition than the aggregate base, and the modulus of the subgrade reaction of the aggregate base and subgrade combination (effective k-value) was improved by about 1.5 times by introducing a 2 inch (50.8 mm) asphalt stabilized base (ASB) layer. Thereafter, FE support models describing the actual field conditions were studied. The effects of the thickness of the stabilized base layer, the elastic modulus of the stabilized base material, and the effective k-value on the composite k-value of the support system were identified using a regression analysis method, and the results showed that the variables had a similar effect when determining the composite k-value. Afterward, a procedure for selecting the layer properties for producing a suitable composite k-value was constructed, and we identified that the maximum stress in the concrete slab was induced at different levels, even with identical composite k-values. Lastly, regression relationships were derived to estimate the maximum stress in the concrete slab by considering both the support layer properties and the concrete slab. Subsequently, an algorithm for selecting an optimized layer composition of the CRCP structure was construction considering the economical aspect.

Mechanical and Piezoresistive Properties of Fibre Reinforced Concrete Pavement

Multifunctional Cementitious Composite (MCC) characteristics are directly related to the type and dosage of the Electrically Conductive Materials (ECMs) reinforcing the relevant concrete matrices. This study investigated the electro-mechanical capacities of concrete pavement (FRCP) with and without the addition of micro scale-carbon fibre (CF12). The mechanical and self-sensing responses of RFCP under indirect tension stress were evaluated initially; then, the effects of 0.5% and 1% content by volume of CF12 on the piezoresistivity capacities of FRCP under compressive load. These types of loads are the most common forces acting to continuously deteriorate rigid pavement. The test findings showed that adding CF12 improved the conductivity and reduced the resistivity of the concrete mixture and reduced polarisation time to on the order of zero seconds. Under indirect tension, however, the use of 1% by volume macro end hook steel fibre (S) resulted in a decrease in electrical resistivity, which was opposite to the expected change, and which suggested that a conductive network built from steel fibre cannot detect changes due to applied loads correctly. However, the CF-reinforced concrete pavement with 1% content by volume succeeded in identifying electrical resistivity changes. Moreover, the developed FRCP showed good results in terms of self-sensing under compression loads with both 0.5 and 1.0% by volume of CF. The results also showed that the use of a hybrid fibre (CF12 0.5% and S 1% by volume) enhanced the indirect tensile strength and compression strength due to CF12’s resistance to micro-cracks.

Maximum Likelihood Estimation of Parameters for Advanced Continuously Reinforced Concrete Pavement (CRCP) Punchout Calibration Model

Pavement performance prediction is the essential part of the pavement design, which is very important for highway agencies for the purpose of budget allocating. This study introduces a model of local calibration for punchout, which is the major structural distress of continuously reinforced concrete pavement (CRCP). It is assumed that the number of equivalent single axle loads’ (ESALs) leads to punchout follows a Weibull distribution. The parameters of Weibull distribution were estimated by maximum likelihood estimation (MLE). Additionally, an approach of estimating the initial value of the parameters was also presented before applying the Newton method for solving the likelihood equations. The regression result was found to fit the performance‐monitoring data from LTPP very well. The proposed calibration model is capable of describing the punchout and can be employed to predict the failure rate and reliability of CRCP in the pavement design and the arrangement of rehabilitation activities.

Numerical Evaluation of Early-Age Crack Induction in Continuously Reinforced Concrete Pavement with Different Saw-Cut Dimensions Subjected to External Varying Temperature Field

Since 1970, continuously reinforced concrete pavements have been used in Belgium. The standard design concept for CRCP has been modified through several changes made in the design parameters to eliminate the cluster of closely spaced crack patterns, since these crack patterns lead to the development of spalling and punch-out distresses in CRCPs. Despite adjusting the longitudinal reinforcement ratio, slab thickness, and addition of asphalt interlayer, the narrowly spaced cracks could not be effectively removed. The application of transverse partial surface saw-cuts significantly reduced the probability of randomly occurring cracks in the reconstruction project of the Motorway E313 in Herentals, Belgium. The field investigation has also indicated that the early-age crack induction in CRCP is quite susceptible to the saw-cut depth. Therefore, the present study aims to evaluate the effect of different depths and lengths of the partial surface saw-cut on the effectiveness of crack induction in CRCP under external varying temperature field. For this purpose, the FE software program DIANA 10.3 is used to develop the three dimensional finite element model of the active crack control CRCP segment. The characteristics of early-age crack induction in terms of crack initiation and crack propagation obtained from the FE model are compared and discussed concerning the field observations of the crack development on the active crack control E313 test sections. Findings indicate that the deeper saw-cut with longer cut-lengths could be a more effective attempt to induce the cracks in CRCP in desirable distributions to decrease the risk of spalling and punch-out distresses in the long-term performance of CRCP. These findings could be used as guidance to select the appropriate depth and length of saw-cut for active crack control sections of CRCP in Belgium.

Analysis of the Early-age Behaviors of Ultra-Thin-Continuously Reinforced Concrete Pavement Overlay

Analysis of the Early-age Behaviors of Ultra-Thin-Continuously Reinforced Concrete Pavement Overlay

Transverse Crack Behavior in Continuously Reinforced Concrete Pavement with Basalt Fiber Reinforcement

Continuously reinforced concrete pavement (CRCP) is a pavement structure with a high performance and long service life. However, the corrosion of the longitudinal steel can result in a poor bond relationship between the steel and the concrete, affecting the load transfer efficiency between the adjacent panels and being responsible for the development of CRCP distresses. Basalt fiber-reinforced polymer (BFRP) is corrosion-resistant and has the potential to be used in CRCP. In this paper, the layout of a CRCP test section with BFRP bars constructed on G330 National Road in Zhejiang Province, China, is presented. An analytical model is proposed to predict the crack behavior of CRCP with BFRP reinforcement, with the predicted results are compared to field-measured ones. A sensitivity analysis of the BFRP design parameters on the crack spacing and crack width is conducted as well. The results show that the mean values for field-measured crack spacing and crack width are 4.85 m and 1.30 mm, respectively, which are higher than the results for traditional CRCP with steel due to the lower elastic modulus of BFRP. The analytical predictions agree reasonably well with the crack survey results. The higher the elastic modulus of BFRP, the reinforcement content (with both BFRP spacing and diameter related), and the bond stiffness coefficient between the BFRP and concrete, the less the crack spacing and crack width will be. Given the same or similar reinforcement content, a lower diameter with a smaller spacing is recommended because of its contribution to a smaller crack spacing and width.

Hardened state behaviour of self-compacting concrete pavement mixes containing alternative aggregates and secondary binders

Hardened state behaviour of two grades (normal- and medium-strength) of Self-Compacting Concrete (SCC) pavement mixes containing varying proportions of Recycled Concrete Aggregates (RCAs) as an alternative aggregate is reported in this paper. These two SCC grades were designed by varying the proportions of fly ash, silica fume and metakaolin in binary and ternary blends of Portland cement. The suitability of these mixes were evaluated for Continuously Reinforced Concrete Pavements (CRCP) application considering various performance as well as the quality control parameters. The results (both experimental and analytical) depicted that inclusion of RCA in Saturated-Surface-Dry (SSD) moisture state would not have any negative effect on fresh and hardened state behaviour of the SCC-CRCP mixes. Although the cement content in some of the mixes were higher than the recommended limit, all the mixes could meet the minimum stipulated flexural strength criterion of 4.5 MPa at 28 days of curing for CRCP. However, to maximize the benefit (utilizing fewer natural resources and more recycled materials) without compromising with the engineering properties, high-volume fly ash based (50%) normal-grade SCC containing 100% RCAs is recommended.

Design, Construction, and Performance of Continuously Reinforced Concrete Pavement Reinforced with GFRP Bars: Case Study

Abstract The application of deicing salt on roads during the winter is one of the main reasons for steel corrosion in reinforced-concrete pavements in cold-weather regions such as Canada and the No...

Assessment of California’s Continuously Reinforced Concrete Pavement Practice and Performance

Around 2009, the California Department of Transportation (Caltrans) adopted continuously reinforced concrete pavement (CRCP) as the preferred pavement type for high-volume truck corridors across the state. Over the last decade, Caltrans has constructed more than a dozen CRCP projects in different climates and exposure to different truck volumes. Caltrans was interested in assessing early CRCP performance and identifying potential areas where design, materials, plans, and specifications, and/or construction practices warranted improvement. This project included a review of national CRCP practice, documentation of Caltrans’ statewide practice, and condition assessment of select CRCP projects statewide. For the most part, Caltrans’ CRCP practice is similar to national guidance and other state highway agency practice. A condition assessment of 14 CRCP projects revealed a wide range of performance with various degrees of distresses (i.e., transverse, cluster, and Y-cracking, and punchouts). However, pavements with average transverse crack spacing below Caltrans’ desired lower limit of 3 ft appeared to have acceptable performance. Excessive map cracking, a high percentage of cluster cracking, and initial development of punchouts was evident in sections that appeared to be performing poorly. General recommendations are provided to advance Caltrans’ CRCP practice.

Investigation of Factors Affecting Distresses on Continuously Reinforced Concrete Pavement using Ground Penetrating Radar

The utilization of continuously reinforced concrete pavement (CRCP) has been widely used throughout the United States during the construction of interstate highways since the 1930s. The essential design criterion of CRCP is to manage the crack type, size, and spacing that forms to reduce the distress; thus, identification of the factors affecting the location and extent of the cracks and distresses provides a prediction for the service life of CRCP pavements. In this paper, the influence that reinforcement placement and concrete cover has on the distresses of CRCPs is investigated using ground penetrating radar (GPR) and eddy current technology at six major interstate and state highway locations in Georgia. It was concluded that pavement having inefficient concrete cover depth and pavement thickness results in increased clusters of single transverse cracks and/or punchouts. A result of this study is the recommendation that longitudinal reinforcement be placed at one-third of the depth of the slab from the top surface of the pavement. Furthermore, a distress factor (DF) was established as a good indicator of the performances of pavements relative to each other. Ideal pavement with no crack acquires a DF of 0. In this study, pavements in good, fair, and poor conditions received DFs of “0.03 and 0.05,” “0.97 and 0.98,” and “3.23 and 3.33,” respectively.