Abstract
To encounter the issues of waste materials, low tensile strength of concrete and environmental impacts of cement production, research is needed to develop a sustainable concrete. This study has endeavored to investigate the effects of using recycled coarse aggregates (RCA), various types of wastewater effluents, fly ash, and glass fibers on the mechanical and durability behavior of recycled aggregate concrete (RAC) incorporating with fly ash and glass fibers (FGRAC). Six different kinds of wastewater effluents for the mixing of concrete, 100% replacing the natural coarse aggregates with RCA, and 30% replacement of cement with fly ash were used for the development of concrete. The experimental measurement portrayed that the textile factory effluent presented the highest compressive and tensile strengths of concrete. Fertilizer factory effluent portrayed the highest water absorption, mass loss due to acid attack, and chloride penetration to concrete.
Highlights
To encounter the issues of waste materials, low tensile strength of concrete and environmental impacts of cement production, research is needed to develop a sustainable concrete
To overwhelm the low tensile strength of plain concrete and the high carbon footprint of the cement industry, the use of glass fibers and fly ash to concrete is beneficial. Mechanical properties such as compressive strength and split tensile strength as well as durability properties i.e., water absorption, chloride penetration, and resistance against H2SO4 of the recycled aggregate concrete incorporating with fly ash and glass fibers (FGRAC) have been studied under different curing ages by employing six types of wastewater for mixing purpose such as domestic sewage wastewater (DSW), fertilizer factory wastewater (FFW), textile factory wastewater (TFW), sugar factory wastewater (SFW), leather factory wastewater (LFW), and service station wastewater (SSW)
The present study investigates the mechanical and durability behavior of recycled aggregate concrete incorporating with fly ash and glass fibers (FGRAC) manufactured using different categories of wastewater
Summary
The contaminated wastewater is producing negative impacts on the natural atmosphere as well as on human health. Such adverse impacts on the environment and human health could be avoided up to a certain limit by using wastewater in the concrete mix. Mechanical properties such as compressive strength and split tensile strength as well as durability properties i.e., water absorption, chloride penetration, and resistance against H2SO4 of the recycled aggregate concrete incorporating with fly ash and glass fibers (FGRAC) have been studied under different curing ages by employing six types of wastewater for mixing purpose such as domestic sewage wastewater (DSW), fertilizer factory wastewater (FFW), textile factory wastewater (TFW), sugar factory wastewater (SFW), leather factory wastewater (LFW), and service station wastewater (SSW). A one-way variance analysis (ANOVA) study was conducted at the five percent significance level to determine the value of discrepancy between the different properties of FGRAC mixes
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