Open Access

ARTICLE

Analysis of a Composite Admixture Based on Ready-Mixed Concrete Waste Residuals

by Jinfa Jiang¹, Long Xiong², Ming Bao², Zihan Zhou^2,*

1 Wuhan Energy Conservation Office, Wuhan, 430000, China
2 China Construction Ready Mixed Concrete Co., Ltd., Wuhan, 430000, China

* Corresponding Author: Zihan Zhou. Email:

(This article belongs to the Special Issue: Advances in Solid Waste Processing and Recycling Technologies for Civil Engineering Materials)

Fluid Dynamics & Materials Processing 2023, 19(8), 1983-1995. https://doi.org/10.32604/fdmp.2023.026023

Received 10 August 2022; Accepted 25 October 2022; Issue published 04 April 2023

Abstract

Reasonable treatment and utilization of waste residuals discharged during the production of ready-mixed concrete is an important problem in the cement industry. In this study, a composite admixture was prepared by using ready-mixed concrete waste residuals, furnace slag, and water granulated slag. The grinding characteristics of such material were investigated. Moreover, the effect of such admixture on cement hydration and pore structure was analyzed by X-ray diffraction, thermogravimetric-differential scanning calorimetry, scanning electron microcopy and mercury intrusion porosimetry. As shown by the results: The grinding characteristics of the waste residuals can be improved significantly by mixing them with furnace slag and water granulated slag. Furthermore, the composite admixture does not change the composition of hydration products; rather it contributes to refine the pore structure of the matrix, thus improving the mechanical properties of these cement-based materials.

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