Influence of brick dust, stone dust, and recycled fine aggregate on properties of natural and recycled aggregate concrete

Abstract

The brick, stone, and construction industries produces huge quantities of non‐biodegradable waste materials and incorporation of such waste materials in concrete eventually leads to the green and sustainable construction. The present paper study the effect of partial substitution of brick dust (BD), stone dust (SD), and recycled fine aggregate (RFA) as fine aggregate on the properties of natural aggregate concrete (NAC) and recycled aggregate concrete (RAC). In the present investigation, two groups of mixes were considered: Group A consists of 100% natural coarse aggregate (NCA) and group B consists of 50% NCA and 50% recycled coarse aggregate. In each group, the natural fine aggregate was partially replaced with 30% BD, 30% SD, and 30% RFA separately. All mixes were designed for M25 grade concrete with a constant w/c ratio of 0.45. The properties viz. compressive strength, density, indirect tensile strength, water absorption, ultrasonic pulse velocity of all mixes was performed. Also, durability performance of all the mixes under acid conditions viz.: HCl and H2SO4 solutions were studied. From the results it was found that the compressive strength and split tensile strengths (27.95–23.23%) of both natural and recycled aggregate concrete were significantly increased with the partial substitution of SD. Also, the results reveal that the water absorption decreased by 57.14–69.64% and 4.67–34.67%, respectively, when the replacement of NFA with BD and SD in both NAC and RAC. Both natural and recycled aggregate concrete were more susceptible for H2SO4 than HCl acid in terms of loss of weight and compressive strength.

Utilization of Recycled Brick Powder as Supplementary Cementitious Materials—A Comprehensive Review

“…Most research studies have shown that replacing ordinary Portland cement (OPC) or part of it in concrete with SCMs reduces the amount of cement and the carbon emissions associated with cement production [ 8 , 9 , 10 , 11 , 12 ]. Moreover, research has shown that SCMs have both pozzolanic [ 13 , 14 ] and filler properties, which are embodied in their ability to improve the mechanical and durability properties of concrete [ 10 , 15 , 16 , 17 , 18 ]. Ongoing research is exploring various alternative waste materials as potential SCMs instead of the well-known ones such as fly ash, ground granulated blast furnace slag, and silica fume.…”

Utilization of Clinker Brick Used for No-Fines Concrete

“…Recycled concrete aggregate quality is lower than normal concrete, so it uses limited up to 30% to replace natural aggregate [6]. Utilization of construction materials, wherever possible, is environmentally friendly material, and its use does not become a nuisance to the environment, which is not always significant at a low cost.…”