Compressive Strength Studies on Recycled Binder Concrete

D D Nguyen,V T Phan

doi:10.48084/etasr.4230

Abstract

Recycled materials are gradually utilized in concrete. This paper examines the use of recycled binder in concrete. The compressive strength tests on concrete incorporating recycled binder instead of cement were carried out after 7, 14, and 28 days of curing. Cement was replaced by the recycled binder in ratios of 10%, 20%, and 30% by weight. The results show that the compressive strength of concrete is strongly affected by the percentage of the recycled binder. It has been found that the compressive strength decreases linearly with the increasing content of recycled binder. The recycled binder does not affect the strength development of concrete. In order to apply recycled waste to concrete as a binder, it is necessary to perform supplement research with appropriate additives to compensate for the loss of the compressive strength.

Highlights

Recycled aggregates can become a new source of material, replacing natural aggregates in concrete [1,2,3]
In order to apply recycled waste to concrete as a binder, it is necessary to perform supplement research with appropriate additives to compensate for the loss of the compressive strength
The current paper presented the results of a research on the compressive strength of concrete using recycled binder from demolition works

Summary

Introduction

Recycled aggregates can become a new source of material, replacing natural aggregates in concrete [1,2,3]. Authors in [1] examined the use of crushed concrete produced from waste concrete as fine aggregates regarding the modulus of elasticity, pulse velocity, and long-term properties such as drying shrinkage and creep. They found that the detrimental effects of crushed concrete can be mitigated by a partial replacement of crushed concrete fines with pulverized fuel ash. Another study replaced fine aggregates in concrete with recycled fine aggregates [2]. The obtained results indicate that the recycled concretes have a suitable resistant and durable behavior, according to the limits indicated by different international codes for structural concrete [5]

Methods

Results

Conclusion