Pervious Concrete Made with Recycled Coarse Aggregate and Reinforced with Date Palm Leaves Fibers

Abstract

This study considers 12 pervious concrete mixes incorporating 100% recycled coarse aggregate from old concrete demolition waste and containing various amounts of natural fine aggregate and date palm leaves fibers. First, the properties of the recycled aggregate in terms of their particle size distribution, abrasion resistance, crushing values, specific gravity and water absorption are obtained. Next, the pervious concrete density, compressive strength, tensile strength, permeability and porosity are determined by experimental testing following the relevant standards. The results are analyzed and compared to determine the influence of using recycled coarse aggregate in the mixtures and the impact of the amount of natural sand and volume fraction of the fibers on the mechanical properties, permeability and porosity of the concrete. Findings of the study showed that the use of recycled coarse aggregate in pervious concrete without fine aggregate reduced the compressive strength by 36% and tensile strength by 57%. Replacing 11.7% of the recycled coarse aggregate with natural sand and adding date palm leaves fibers in an amount equivalent to 0.64% volumetric content to such concrete helped increase the compressive strength by 16.2% and tensile strength by 3.2% above the corresponding strengths of the control mix. There is a clear relationship between permeability and porosity due to their correlation with the density of pervious concrete, and the effect of porosity on tensile strength is more influential than it is on the compressive strength. An equation that can predict the tensile strength of pervious concrete from the compressive strength is proposed, as a function of the natural fine aggregate fraction of the coarse aggregate and volumetric content of natural fibers. Results of the research confirm the feasibility of using recycled aggregate in pervious concrete mixes and the positive impact of natural fibers on the mechanical properties.

Compressive Strength, Permeability, and Abrasion Resistance of Pervious Concrete Incorporating Recycled Aggregate

“…Lima et al [20] reported that incorporating Hydroxypropyl methylcellulose (HPMC) with 50% RCA, alongside a superplasticizer, improved the mechanical properties of RAPC without compromising its permeability. Further, Tamimi et al [21] found that the addition of date leaf fibers slightly affected the compressive strength of RAPC, yet significantly enhanced its tensile strength. Aliabdo et al [22] examined the effects of various fibers and styrene-butadiene latex on the properties of RAPC, noting that polypropylene fibers and styrene-butadiene latex positively influenced the strength index, whereas rubber fibers reduced both compressive and tensile strengths.…”

Corrosion of Steel Rebars in Construction Materials with Reinforced Pervious Concrete

“…The incorporation of low-cost materials into pervious concrete for improving mechanical performance is also extended to natural or synthetic fibers, such as high-strength glass fibers [17,18], carbon fibers, cured carbon composite fibers, date palm leaf fibers [19], palm oil kernel shell fibers [20], cellulose fibers, natural kenaf fibers, steel fibers [18], coppercoated fibers, amorphous metallic fibers, hemp fibers, seashell fibers [20], polypropylene fibers [9], polyolefin fibers, polyester fibers, polyethylene fibers, ferro-green, green-net fibers, polyvinyl alcohol fibers, polyvinyl chloride fibers, recycled rubber fibers, waste plastic fibers, Kevlar fibers, polyacrylonitrile fibers, waste cloth strip barchip fibers, basalt fibers, etc. [21] Steel and polypropylene fiber inclusion increases abrasion and permeability performance, respectively [9].…”

Research on Statistical Characteristics and Prediction Methods of Ferronickel Slag Pervious Concrete Performance with Different Sizes of Aggregate and Mixtures

“…Using some solid waste to produce pervious concrete can effectively treat solid waste while reducing the use of construction materials and carbon emissions [21]. Many scholars have conducted research including using solid waste, such as recycled coarse aggregate [22][23][24], coal bottom ash aggregates [25], rice husk ash [26], waste glass [27], metakaolin [28], and fly ash [29], to produce pervious concrete.…”