Open Access

ARTICLE

Experimental Performance Measures of Recycled Insulation Concrete Blocks from Construction and Demolition Waste

by Doudou Liu^1,*, Liang Qiao^2,3, Guozhong Li⁴

1 School of Management Science and Engineering, Shandong University of Finance and Economics, Jinan, 250014, China
2 National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization, Research Center for Sustainable Development, School of Energy and Power Engineering, Shandong University, Jinan, 250061, China
3 Housing and Urban-Rural Development Institute of Shandong Province, Jinan, 250004, China
4 School of Materials Science and Engineering, University of Jinan, Jinan, 250001, China

* Corresponding Author: Doudou Liu. Email:

(This article belongs to the Special Issue: Recycled Concrete Towards a Sustainable Society)

Journal of Renewable Materials 2022, 10(6), 1675-1691. https://doi.org/10.32604/jrm.2022.018397

Received 21 July 2021; Accepted 10 September 2021; Issue published 20 January 2022

Abstract

Construction and demolition (C&D) waste has seriously affected the ecological environment. The utilization of C&D waste resources can greatly alleviate this problem, and it is an important way to help achieve the goal of zero carbon in 2050. In this study, insulation concrete blocks were developed with recycled aggregates, cement, fly ash as main raw materials, expanded polystyrene (EPS) insulation boards as block insulation filling material, and self-developed construction waste composite activator, interface enhancer, surface modifier and other additives. Through experimental research and performance test analysis, the best mix ratio of the product and the mechanism of each additive were proved. The experimental results showed that the insulation concrete block prepared under the conditions of recycled aggregates sand ratio of 45%, active activator Na₂SO₄ content of 0.15% and fly ash content of 30% has the best performance and meets the relevant standards.

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Keywords

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