International Journal For Multidisciplinary Research

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Use of Waste Concrete for Ordinary RCC Structure

Author(s) Er. Anu Kumar, Er. Abhishek Arya
Country India
Abstract The aim of current study was to determine the recycled concrete aggregate (RCA) applicability in the production of concrete mixture for vibropressed concrete rcc structure. The experiments were focused especially on the crushed waste material from the same concrete elements producing plant. For this type of precast elements only some finer fractions can be implemented and the “earth-moist” consistency of fresh mixture is required. The series of samples was prepared in which the mixture of natural aggregates was partially or totally substituted by recycled concrete aggregate. The 0/4 RCA fraction, which is usually rejected in ready mix concrete technology, plays a role of 0/2 sand. The substitution of sand fraction was from 20% to 100% respectively. The substitution of the coarser aggregate fractions by 4/16 RCA was also done. The standard properties of vibropressed elements, such as the degree of densification, the density of material, the compressive and splitting tensile strength and the water absorption capacity according to the relevant standards were determined. The parameters of materials with the natural aggregate substitution by RCA are affected by the ratio of recycled concrete aggregate. In most cases the results do not decline specially from those for reference samples, when only the natural sand (0/2) fraction is substituted by the 0/4 recycled aggregate. As one could expect, as lower the substitution, as better the test results. The partial substitution of natural aggregate by coarser fractions requires experimental verification; over 20%substitution of natural aggregate by 4/8, 8/16 or 0/16 RCA should be excluded.
Keywords RCC Structure
Field Engineering
Published In Volume 5, Issue 3, May-June 2023
Published On 2023-05-12
Cite This Use of Waste Concrete for Ordinary RCC Structure - Er. Anu Kumar, Er. Abhishek Arya - IJFMR Volume 5, Issue 3, May-June 2023. DOI 10.36948/ijfmr.2023.v05i03.3059
DOI https://doi.org/10.36948/ijfmr.2023.v05i03.3059
Short DOI https://doi.org/gr77pb
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