Feasibility study of usage of recycled coarse aggregates and fly ash for attaining sustainability in the construction sector: a systematic approach

Gyana Ranjan Nayak; Rakesh Kumar Patra; Bibhuti Bhusan MukharjeeSanghamitra Jena

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Feasibility study of usage of recycled coarse aggregates and fly ash for attaining sustainability in the construction sector: a systematic approach

机译：Feasibility study of usage of recycled coarse aggregates and fly ash for attaining sustainability in the construction sector: a systematic approach

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The purpose of this systematic experimental investigation is to examine the impact usage of coarse fraction of aggregates retrieved from waste concrete collected from construction and demolition site (known as recycled coarse aggregates, RCA) and fly ash (FA) on concrete. For this, concrete mixes are designed incorporating 0%, 50% and 100% RCA along with 0%, 5%, 10%, 15%, 20%, 25%, and 30% of FA as cement substitution for this purpose of assessing feasibility of obtaining sustainability in the field of construction materials. Several characteristics of concrete such as workability, compressive strength (CS), flexural and split tensile strength, rebound number (RN), volume of voids (VV), water absorption (WA), modulus of elasticity, density, ultrasonic pulse velocity (UPV) of concrete mixes has been evaluated. The outcomes of this experimental study reveal that degradation in strength and non-destructive parameters and enhancement in VV and WA has been detected with the introduction of RCA.

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来源
《International Journal of Sustainable Materials and Structural Systems》 |2021年第3期|239-261|共23页
作者
Gyana Ranjan Nayak; Rakesh Kumar Patra; Bibhuti Bhusan MukharjeeSanghamitra Jena;
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作者单位

Department of Civil Engineering, Veer Surendra Sai University of Technology;

Department of Civil Engineering, Indian Institute of Technology Roorkee;

Department of Civil Engineering, Biju Patnaik University of Technology;

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原文格式 PDF
正文语种英语
中图分类工程材料学;
关键词
Compressive strength; Modulus of elasticity; Coarse recycled concrete aggregates; Rebound number; Ultrasonic pulse velocity; UPV; Recycled coarse aggregates; RCA;

Feasibility study of usage of recycled coarse aggregates and fly ash for attaining sustainability in the construction sector: a systematic approach

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