Experimental Study on Long-Term Mechanical Properties and Durability of Waste Glass Added to OPC Concrete

Author:

Zhu Jichao12,Meng Xinyu1,Wang Baoyuan13,Tong Qianhao4

Affiliation:

1. School of Civil Engineering, Dalian Jiaotong University, Dalian 116028, China

2. State Key Laboratory of Bridge Engineering Structural Dynamics, China Merchants Chongqing, Communications Technology Research & Design Institute Co., Ltd., Chongqing 400015, China

3. School of Mechanics & Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China

4. Chery Automobile Co., Ltd., Wuhu 241000, China

Abstract

This study aims to achieve the sustainable utilization of waste glass resources through an investigation into the influence of three types of admixtures, namely waste glass powder (WGP) (G), waste glass powder–slag (G-S), and waste glass powder–fly ash (G-F), on the mechanical properties and durability performance of waste glass concrete. The experimental results demonstrate that the exclusive use of WGP as an admixture led to the relatively poor early compressive strength of the concrete, which decreased with an increase in dosage. However, at medium to long curing ages, the strength of the waste glass concrete could equal or even surpass that of ordinary concrete. When dual admixtures were employed, the G-S group exhibited higher compressive strength compared to the G-F group. Specifically, within the G-S group, a glass powder dosage of 15% yielded higher compressive strength, and after 180 days, the dual admixture groups exhibited greater strength than ordinary concrete (G0); the compressive strength of the tG1S1 group was 44.57 MPa, and that of the G0 group was 40.07 MPa. The chloride ion diffusion coefficient showed a varying trend with an increase in WGP dosage, initially decreasing and then increasing. The concrete’s resistance to erosion was maximized when the glass powder dosage reached 30%. As the WGP dosage increased, the overall frost resistance decreased. For a total dosage of 30%, the optimal glass powder dosage in both G-S and G-F groups was found to be 15%.

Funder

Natural Science Foundation of Liaoning Province, China

Project of Education Department of Liaoning Province, China

Fund of State Key Laboratory of Bridge Engineering Structural Dynamics

Key Laboratory of Bridge Earthquake Resistance Technology, Ministry of Communications, PRC

Publisher

MDPI AG

Subject

General Materials Science

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