Split Tensile Research Articles

Mechanical performance of fiber-reinforced concrete and functionally graded concrete with natural and recycled aggregates

This study aims to assess the mechanical performance of functionally graded concrete (FGC) in comparison to conventional plain cement concrete (PCC) and fibre-reinforced concrete (FRC). For this purpose, five concrete mixes were prepared, defined in eleven patterns, including PCC as a control mix, two FRC mixes, and eight combinations for FGC mixes. The hooked-end steel fibres and recycled thin polyethylene terephthalate (PET) strips from used bottles were utilized as fibres in 0.75 % of the volume of the mix in the FRC and FGC mixes. The natural aggregates were replaced by 15 % by weight with recycled plastic aggregates (RPA) and recycled concrete aggregates (RCA) in the FGC mixes. The mechanical performance of all specimens was assessed by compressive, split tensile and flexural strength tests, whereas the concrete quality was evaluated by the ultrasonic pulse velocity (UPV) test. The results revealed that the FRC mix containing steel fibres has 50.6 % higher compressive strength, while PET-FRC exhibited 42.4 % lower strength than the PCC. The best combination of the FGC mix is RCA + SFRC (H), which showed 27.6 % more compressive strength than PCC. The steel fibre-reinforced concrete (SFRC) mix has the highest split tensile strength, which is 47.5 % higher than the PCC. The best combination of FGC mixes is SFRC + PET-FRC (J), yielding 29.3 % higher tensile strength than PCC. On the other hand, both fibres contribute to the flexural strength enhancement of FRC. The FGC mix (K) yielded the highest flexural strength, with PET-FRC and SFRC in the upper and bottom layers, respectively, giving 40 % more flexural strength than the PCC specimen. The UPV values depicted that fibres and recycled aggregates in FGC specimens enhanced the quality of concrete. The highest value of UPV was recorded in the mix PCC + SFRC (G) containing PCC and steel fibres, which almost reached the upper limit of the recommended UPV values.

Experimental Study on Concrete by Adding Polyester Fibres

Abstract There are increased innovations in the field of concrete because there are endless opportunities for innovative materials, techniques, applications, and design. Today’s construction industry is looking for cost-effective materials to improve the strength of concrete structures. As a result, an attempt has been made in the current research to investigate the impact of adding polyester fibres (Recron 3s) to concrete. Fibres improve concrete's tensile and flexural strength, fatigue properties, durability, shrinkage properties, impact and erosion resistance, and serviceability. Polyester fibres (Recron 3s) are micro fibres; they contribute to enhancing the resistance of concrete to shrinkage and cracking and also help to improve mechanical properties such as the flexural / split tensile and transverse strength of concrete along with improvements in abrasion and impact strength. An experimental study was done using a M30 mix design. Polyester fibres (Recron 3s) were used in the concrete with varying dosage rates of 0.50 kgs / cu.m – 2.00 kgs / cu.m. This study describes the enhancement in the strength of the M30 grade mix concrete by the addition of polyester fibres (Recron 3s) in the proportions of 0.5, 1, 1.5, 2.0kg/cu.m, and M30 concrete with varying dosages of the polyester fibres (Recron 3s) were mixed and cast.

Compressive and Tensile Strength of Nano-clay Stabilised Soil Subjected to Repeated Freeze–Thaw Cycles

Abstract Improvement of the mechanical properties of clayey soils by additional elements to enhance the strength under numerous freezing and thawing cycles has been considered as a serious concern for engineering applications in cold regions. The objective of the current study is to investigate the effect of nano-clay as a stabiliser on the mechanical properties of clay. To this end, the clay specimens were prepared by adding various percentages of nano-clay ranging from 0.5% to 3% by dry weight of soil and were experimentally tested under the uniaxial compression and tensile splitting tests under different curing times (0, 7 and 28 days) after experiencing various freeze–thaw cycles ranging from 0 to 11. It can be concluded from the results that nano-clay particles may be used as a stabiliser in geotechnical applications to improve soil property. The results indicate that the optimum moisture content (OMC) of specimens increases and the maximum dry density (MDD) decreases with the increasing nano-clay content. The specimens containing about 1% nano-clay recorded maximum values of unconfined compressive strength (UCS) as well as tensile strength. For example, the addition 1% nano-clay increased the UCS and tensile values of clay specimens under the curing time of 28 days by 34% and 247%, respectively. In addition, the long-term durability of specimens against freeze–thaw cycles increases further with the addition of nano-clay content ranging from 2% to 3%.

Static, fatigue and hygroscopic performance of steel-reinforced resins under various temperatures

Resins are essential structural materials predominantly used in load-bearing connections such as adhesively bonded joints and resin-injected bolted connections. In an effort to improve the latter, a new injection material, Steel Reinforced Resin (SRR), has been developed, consisting of spherical steel particles embedded in a resin. SRR's applicability has been explored in injection bolts used in composite steel-to-concrete floor systems and as an injection material in Fibre Reinforced Polymer (FRP) sandwich web-core panels of highway bridges. While the short-term and creep performance of SRR has been researched, its fatigue behaviour remains unexplored. From joint-level cyclic experiments with SRR, it was observed that joint endurance is dominated by SRR's fatigue performance. There is currently no research on the influence of temperature on SRR's mechanical properties and moisture uptake. This paper fills this gap, by investigating the static and fatigue performance of epoxy, unsaturated polyester polyurethane hybrid (UPE + PU), and vinyl ester based SRRs under ambient and elevated temperatures. Water absorption assessments were conducted on the three resins with and without steel particles to evaluate their durability and corrosion resistance. The results show that temperature significantly impacts tensile stiffness, tensile splitting strength, and fatigue life. Epoxy based SRR endured 20 times more tensile splitting stress cycles to failure compared to the UPE + PU resin based SRR at the same stress range. However, after 200 days of water exposure at maximum temperature, the epoxy resin (with and without steel shot) exhibited a weight increase of 4.0% and 0.50% respectively, suggesting that despite its superior fatigue performance, it may not be suitable for SRR applications in high moisture environments. In contrast, UPE + PU resin and its corresponding SRR displayed substantially lower water absorption.

Evaluating Fractal Damage and Acoustic Emissions of Soft Rock–Coal Combinations in a Deep Mining Area

Weakly cemented soft rock mines in the Ordos Basin are susceptible to mining disasters, including roof collapse and substantial deformation of surrounding rocks, during coal mining operations. Researching the damage characteristics of structures composed of low-strength “soft rock–coal” combinations is crucial for effectively preventing and controlling disasters in deep soft rock mining. To investigate the fractal damage characteristics of soft rock–coal combinations with different height ratios, uniaxial compression tests were conducted on specimens containing soft rock percentages of 20%, 40%, 50%, 60%, and 80%. The results show that the uniaxial compressive strength and modulus of elasticity of the soft rock–coal combinations increased with increasing proportions of soft rock. The soft rock–coal combination was clearly segmented, and the 40%, 50%, and 60% soft rock–coal combinations had good self-similarity. The fractal dimensions were 2.374, 2.508 and 2.586, which are all within the interval [2, 3]. When the percentage of soft rock was 20%, the specimen damage yielded flaky coal bodies with smaller grain size, whereas the coal–rock interface was spalled by small conical rock bodies. As the soft rock proportion increased, the percentage mass of fragments with particle size greater than 20 mm increased from 83.34% to 94.15%. The failure mode in soft rock–coal combinations is primarily attributed to the partial tensile splitting of the coal body. As the proportion of soft rock increased, there was a gradual reduction in the extent of coal body damage. Moreover, the acoustic emission absolute energies and counts decreased as the proportion of soft rock increased. The acoustic emission energy was reduced from 2.46 × 109 attoJ to 3.41 × 108 attoJ, and the acoustic emission counts were reduced from 18,276 to 7852.

Comparisons of flexural, split tensile, double punch, and direct tension tests on high-performance concrete reinforced with different fiber types

The study investigates the variation of tensile strength of high-performance concrete (HPC) based on various tensile tests, such as the flexural test, splitting tensile test, double punch test, and direct tension test, conducted on dog bone specimens. The test samples were HPC concrete reinforced with three different fibers in a fraction ratio ranging from 0 % to 2 %. The three kinds of fibers utilized in this investigation are those most frequently employed in Vietnam, including straight steel fibers with copper plating, polypropylene (PP), and hook steel fibers. The study additionally investigates the similarities between the results of tensile strength experiments on HPC concrete by examining the average tensile strengths, tensile failure modes, and material behavior graphs of tensile stress versus recorded specimen displacement. Overall, The average tensile strength results of bending and splitting tensile tests were significantly higher than those of the direct tensile and double punch tests. All tests could capture the behavior of HPFRC in the working periods. Splitting and flexural tensile test results followed a normal distribution. However, direct and double punch test results did not. The results of this study show that double punch tests can be used instead of direct tensile tests to measure the tensile strength of fiber concrete.

Utilization of Ceramic Waste Material as Cement Substitution in Concrete

Researchers and engineers have been exploring alternative materials to partially substitute for cement in concrete to decrease carbon emissions and promote sustainability. Industrial pozzolanic waste is one such material that has gained attention as a potential substitute for cement. This research paper investigates the use of industrial pozzolanic waste materials, ceramic fine dust from the cyclones installed onto spray dryers in the process of manufacturing ceramic tiles, as a partial replacement for cement in concrete. Chemical analysis showed that ceramic dust could be used as pozzolana as ASTM C 618:2019. The study aims to evaluate the properties of fresh and hardened concrete; compressive strength; tensile splitting; and flexural strength of concrete mixtures. Additionally, specimens were subjected to durability performance: an acidic environment and water absorption tests. The cement was replaced in the concrete mix in proportions of 0, 5, 7, 10, 15, 20, and 30% by weight with a water-to-binder ratio of 0.45 at different curing periods. The results showed an increase in compressive strength of up to 10% replacement over time; fortunately, even with up to 30% replacement, it is still within the characteristic value of 30 MPa. The workability of the concrete decreases with replacement. The flexural tensile strength improved by 8% and the splitting strength by 5% with a replacement of 7% set against the control sample. The water absorption of concrete decreased by up to 10% replacement level, which was 15% less than that of the control mix. Concrete subjected to a 2% sulfuric acid solution (acid attack) revealed a loss in compressive strength when set against those not subjected to acid attacks. Based on the present research, ceramic dust as pozzolanic waste material can be used as a partial substitute for cement in the manufacture of good quality concrete under standard conditions.

Inspection of Thermo-Mechanical Behavior on Sintered Fly Ash Aggregate in Pavement Quality Concrete

Conventional concrete pavement is more efficient towards mechanical load but combing with environmental loads compromises serviceability. This paper mainly focuses on utilizing sintered fly ash (SFA) aggregate to partially replace coarse aggregate in pavement quality concrete. Incorporating SFA aggregate in concrete pavement enhances the thermal behavior of rigid pavement due to higher voids and lower thermal conductivity. Coarse aggregate was partially replaced with SFA aggregate at an interval of 10 % till 40% by volumetric replacement. Pavement quality concrete (PQC) was designed as per Indian standards with a fixed water-cement ratio of 0.36 to achieve a minimum of 40 N/mm2 compressive strength. Compressive, split tensile and flexural strengths were inspected as mechanical behavior and thermal conductivity was examine as thermal behavior of different SFA mixed PQC. It has been observed that there is a slight decrement in mechanical strength by incorporating SFA in PQC but the thermal property of PQC was improved. Overall, it can be concluded that incorporating SFA at a certain level enhances the combined thermo-mechanical properties of PQC.

Mechanical and microstructural study of slag based alkali activated concrete incorporating RHA

The objective of the present research is to evaluate the effect of incorporation of rice husk ash (RHA) into ground granulated blast furnace slag (GGBS) based alkali activated concrete (AAC) at ambient temperature to develop a cement free binder that composed of waste products. The hardened properties of AAC have been evaluated in accordance with Indian Standard code in terms of destructive tests such as compressive, splitting tensile and flexural strength, as well as non-destructive tests such as rebound number, ultrasonic pulse velocity (UPV) and dynamic modulus. Using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), the microstructural characteristics of AAC mixes were evaluated. The outcomes of the test indicate that the compressive strength of AAC achieves maximum strength when RHA component of up to 10% is incorporated into the AAC mixture. The compressive strength declined beyond 10% RHA, however the AAC has lower strength of 39.5 N/mm2 (M7 mix at 7 days) among all mixes, which was adequate for the structural applications. Corresponding to compressive strength, the split tensile and flexural strengths exhibit similar performance. Statistical analysis also carried out to determine the correlation between different parameters. The SEM test shows the formation of dense microstructure at a lower percentage of RHA content in the mix, whereas cracks and voids were detected in case of a higher percentage of RHA. Therefore, using GGBS with lower RHA content as binder cured at ambient temperature enhances the performance of AAC and also facilitates the use of AAC instead of ordinary concrete.

Tailoring of Compaction Parameters of the Vibratory Table and Vibratory Hammer for Roller Compacted Concrete Pavements to Resemble Field Properties

Previous studies have indicated that roller compacted concrete pavement may demonstrate significant variations in field behavior compared to laboratory specimens. This discrepancy can be attributed to the dissimilarities in compaction efforts between laboratory and field conditions, wherein the laboratory efforts fail to emulate the field compaction. Thus, in the present study, efforts have been made to optimize the compaction parameters, especially the number of layers of widely employed compaction methods, viz, the vibratory hammer (VH) and vibratory table (VT). A field slab was constructed using a duplex roller to provide a target value for the optimization process. Parameters such as packing density, fresh density, mechanical properties, viz, compressive, split tensile, and flexural strength, and porosity were considered for the tailoring process. Fresh density results showed that VT and VH-compacted specimens with ASTM parameters were loosely (−1.1%) and densely compacted (+5%), respectively, compared with field specimens (FSs). Therefore, to determine the optimal compaction parameters, the number of layers increased to five in the VT method and decreased to one in the VH method. Among different compaction layers, only the specimen fabricated with four layers and one layer in the VT and VH methods, respectively, could closely resemble the fresh, mechanical, and porosity of FSs. In addition, a new compaction procedure for fabricating prismatic specimens is developed for the VH and VT methods based on the compaction energy and packing density approaches.

Water transport in cracks controlled by digital image correlation in wet sprayed concrete with and without an EVA based co-polymer admixture

Experiments were undertaken on wet sprayed concrete discs to investigate the effect of cracking on capillary suction and permeation through sprayed concrete for tunnel linings. The 98 mm diameter, 50 mm thick discs were cracked by tensile splitting, with the crack widths controlled and measured by digital image correlation and also checked by microscope measurements. Both a standard sprayed concrete mix and a mix containing an EVA (ethylene–vinyl-acetate) based co-polymer powder were tested. Cracks increased the rate of capillary suction compared to uncracked samples, due to rapid rise of water in the crack and absorption occurring over the surface area of the crack in addition to the area of the base of the disc. Discs with wider crack widths exhibited a higher rate of water permeation per area of crack. Inclusion of the EVA based co-polymer reduced the rate of capillary suction and the permeation flow rate coefficient (measured flow / theoretical viscous laminar flow) for a given crack width compared to the standard mix. Self-healing occurred both during water permeation and water storage of cracked discs. The use of CT scanning to measure the crack through the full thickness of a disc was explored and compared to crack width measurements made at one surface of the disc only.

Experimental study on mechanical properties of coal gangue base geopolymer recycled aggregate concrete reinforced by steel fiber and nano-Al2O3

Abstract Using recycled aggregates to prepare geopolymer concrete plays an essential role in reducing dependence on natural resources and solving the problem of waste accumulation. However, the application of geopolymer recycled aggregate concrete (GRC) has been greatly limited due to the defects in the quality of recycled aggregates and the limitations of the brittleness of concrete materials. Therefore, the work is dedicated to improving GRC properties and exploring the mechanism of action of steel fiber (SF) and nano-Al2O3. In this study, calcined gangue, slag, fly ash, and recycled aggregate were used as raw materials, the influence of SFs (0–1.25 vol%) was first explored by single factor analysis, and on this basis, the effect of nano-Al2O3 (NA) (0–2 wt%) on the GPC performance of SF was studied. The microstructure of GRC was analyzed by scanning electron microscopy. The test results showed that adding SF could significantly improve the splitting tensile and flexural strength of GRC, among which 0.75 vol% is the most excellent. However, the increase in compressive strength could be more apparent. The addition of NA can make up for the lack of SF in improving compressive performance. When NA content is 1 wt%, the version of GRC is most apparent. Adding 1% NA has the most significant advance in GRC performance. The microstructure analysis showed that the NA could promote the polymerization reaction, generate more gel, and make the contact interface between SF and matrix more compact, thus improving the strength of GRC.

Machine learning and RSM-CCD analysis of green concrete made from waste water plastic bottle caps: Towards performance and optimization

This study aims to serve as a performance indicator for the workability and strength of concrete when coarse aggregate, sand, cement, and water are partially substituted with waste plastic bottle caps. The significance of these alternative plastic water bottle caps is to reduce plastic trash that is difficult to lapse and to prevent waste that can be transformed to something that may be employed in the advancement of technology in the future. The principle of "Reduce, Reuse, and Recycle" is used, which not only lowers environmental pollution but also reduces costs. In the building industry, concrete is the most often utilized material. In order to preserve natural resources and minimize the number of materials that end up in landfills, green construction is becoming a more significant worldwide issue. Empty cans and bottle tops from drinking water bottle produce a lot of garbage. The difficulty of biodegrading plastic trash and the need for techniques for recycling or reuse make this a problem for the environment. Such problems are being investigated in this study in order to determine whether it could be possible to partially replace coarse aggregate with 0, 6 and 12% in the manufacturing of concrete using discarded bottle caps. To evaluate the compressive strength, split tensile, and flexural strength test characteristics in a laboratory setting; waste bottle caps were used as replacements for coarse aggregate at different percentages. The highest compressive strength was determined to be 28.80 MPa with 12% replacement of used plastic bottle caps with a water cement ratio of 0.55. Advanced statistical methods, including RSM-CCD (Response Surface Method-Central Composite Design) and machine learning models ANN-LM (Artificial Neural Network- Levenberg Marquardt), were applied in this study to predict concrete performances based on mix design variations. It was found that ANN-LM model displayed more accurate prediction relative to RSM-CCD method.

Study on the Internal Mechanics and Energy Characteristics of Soil under Different Failure Modes

Under uniaxial compression, the soil mass may be subjected to transverse tensile splitting or swelling failure. This failure is caused by the tensile stress in the soil; that is, part of the vertical stress is converted into lateral stress. In order to investigate the factors that influence the stress transfer phenomenon, the failure mode of the soil mass can be predicted more accurately, and the internal force of the soil mass can be analyzed. This paper begins with the definition of the stress conversion coefficient and measures it by combining macroscopic mechanical properties with microscopic structure analyses. By carrying out a uniaxial compression test on a large soil sample, an equivalent tensile test was carried out according to the equivalent transverse displacement measured using the S-type tension sensor in order to explore the change law of the stress conversion coefficient. The arrangement and distribution of pores and particles at different positions in the samples before and after compression were further observed and analyzed using the SEM test to explore the formation mechanism of the stress transition phenomenon, and the following research results were obtained: (1) The stress conversion coefficient of the soil under compression is not invariable. An increase in the loading rate and a decrease in water content cause brittleness, and the stress conversion coefficient of the soil decreases. (2) Shear failure is more likely to occur in large samples of brittle soils under uniaxial compression. (3) The tensile stress in the compressed soil is caused by the invasion and extrusion of soil particles.

Laboratory study on the properties of concrete pavement containing blast furnace slag and Gilsonite

This study evaluated the mechanical properties and abrasion resistance of the concrete pavement when cement was replaced by the blast furnace slag (BFS) and Gilsonite at levels of 20%, 25%, and 30%, as well as 5%, 7%, and 9%, respectively. For this purpose, a total of ten mixing designs were made and cured for 28 days. The results showed that the compressive strength of mixtures containing two additives decreased. In contrast, the BFS20-G7 mixture satisfied the proposed minimum compressive strength. However, the flexural strength and tensile splitting of the BFS20-G7 containing 20% BFS and 7% Gilsonite increased by about 4 and 7 percent. The Wide Wheel Abrasion Test results showed that the mixture containing 20% BFS-7% Gilsonite increased the abrasion resistance by about 5% and 17% in 100 and 300 revolutions, respectively. Conclusively, using BFS20-G7 in low-traffic areas such as parks and driveways can be suggested.

Dynamic splitting behavior of ultra-lightweight cement composite with rubber and polyethylene fiber

The incorporation of fiber and rubber into concrete can enhance its tensile strength and impact resistance. In this study, a new rubberized ultra-lightweight high ductility cement composite (RULHDCC) was developed by mixing waste rubber particles and polyethylene (PE) fiber into an ultra-lightweight cement composite (ULCC). Previous studies have demonstrated that the effect of rubber and PE fiber results in satisfying static and dynamic compression performance. This study carried out a series of Split Hopkinson Pressure Bar (SHPB) splitting tests to investigate the impact of rubber and fiber on the tensile strength and splitting behavior of RULHDCC. The results showed that the splitting behavior of RULHDCC was significantly improved due to the synergistic effect of rubber and fiber, without much loss of compressive strength. The tension-Dynamic Increasing Factor (DIF) models are evaluated, and the limitations of the research are highlighted.

Characterization of ureolytic based bio concrete

One of the oldest and most popular building materials in the world is concrete., mostly because it is inexpensive, readily available, has a long lifespan, and can withstand harsh weather conditions. But as concrete is brittle tends to fail in cracks more. The consequence of micro-cracks in concrete is many such as corrosion, faster degradation of the structure, reduced load-carrying capacity, etc. As it is impossible to avoid these cracks due to their behavior, many new techniques have been explored to repair them. But with a sustainability perspective, it is important to proceed such that it can benefit the environment. Therefore, the aim of the present work focuses on sustainability solutions for crack repair and strength enhancement. One such mechanism is Calcium carbonate precipitation from the bacteria to fill the cracks. CaCO3 has been observed to blend with concrete easily and enhance its properties. Among different pathways available, the use of ureolytic bacteria such as the Bacillus family to obtain CaCO3 by degrading urea is more effective and economical. The current study used culturing of a new type of Bacillus pseudofirmus and Bacillus cohnii bacteria to investigate the stress behaviour and resilience of concrete. A large number of samples were cast to investigate various strength properties such as compressive, flexural, split tensile strength, water absorption, and SEM analysis. According to the results of the tests, there was a 36.36% growth in compressive stress for 106 cell concentrations after 56 days. Similarly, there was a noticeable growth in split tensile and flexural stress. SEM images, finally, confirmed the occurrence of CaCO3 in the mix. The outcome of this study can assist researchers and the construction industry to look into the different possibilities to enhance the properties of concrete.

Thermo-mechanical treatment as an upcycling strategy for mixed recycled aggregate

The study investigates thermo-mechanical treatment for mixed recycled aggregates (MRA). Six treated aggregates were prepared by heating MRA between 300 °C and 800 °C, followed by 100 abrasion cycles. The thermo-mechanical treatment causes loss in the adhered mortar and improves aggregate crushing, impact and abrasion value up to 700 °C. Concrete prepared with MRA treated at 700 °C, as compared to natural aggregates, shows higher workability (166.67%) and comparable mechanical strength, i.e., compressive (93.72%), flexural (99.94%) and split tensile (97.87%). The sustainability assessment shows that treating MRA with renewable energy can have lower economic costs (89.36%) and carbon emissions (58.05%) than manufacturing natural aggregates.

Tensile behavior analysis and prediction of steel fiber recycled fine aggregate concrete

This paper investigated the splitting tensile and axial tensile behaviors of steel fiber recycled fine aggregate concrete (SFRFAC). The effects of recycled fine aggregate (RFA) replacement ratio, steel fiber volume fraction, steel fiber type and silica fume content on the tensile properties of SFRFAC were studied. The digital image correlation (DIC) technique was utilized to observe the surface crack development of SFRFAC specimens. The results show that the splitting tensile strength of SFRFAC was greater than the axial tensile strength. Furthermore, the use of RFA decreased the splitting tensile strength, axial tensile strength and axial tensile elastic modulus of SFRFAC, and increased its axial tensile peak strain, while the addition of steel fiber and silica fume enhanced the splitting tensile strength, axial tensile strength, axial tensile peak strain and axial tensile elastic modulus of SFRFAC. Finally, the relationship between splitting tensile strength and axial tensile strength and the relationship for the axial tensile stress–strain of SFRFAC were proposed, respectively. Moreover, the modified damage constitutive model was also proposed by considering the damage threshold and the damage variable correction parameter to make the damage constitutive model more reasonable.

Mechanical performance of date palm fiber-reinforced concrete modified with nano-activated carbon

Abstract Date palm fiber (DPF) is an easily processed, low cost, and accessible natural fiber. It has mostly been used in composites for non-structural applications. For DPF to be utilized in cementitious composites for structural applications, ways to reduce its harmful effect on compressive strength must be devised. Therefore, in this study, nano-activated carbon (NAC), due to its filler effects, was used as an additive to produce the DPF-reinforced concrete (DPFRC). To produce the DPFRC, 0, 1, 2, and 3% by cement weight of DPF and NAC were added. The fresh properties, strength, and microstructure of the concrete were examined. The findings revealed that DPF decreased the consistency, density, and compressive strength. Additionally, it increases the porosity in the concrete microstructure. The addition of up to 1% NAC significantly improved the compressive, flexural, and split tensile strengths of the concrete, while it decreased the harmful impact of up to 2% DPF on the DPFRC’s strength. The split tensile and flexural strengths of the concrete were enhanced with the addition of up to 2% DPF without any NAC. The addition of up to 2% NAC densified the DPFRC’s microstructure by refining and filling the pores generated by the DPF. The multivariable statistical models developed to estimate the mechanical properties of the DPFRC containing DPF and NAC were very significant with a very high degree of precision.