Maximizing the utilization of construction waste in cement-stabilized macadam based on mechanics and durability performance

IF 7.4 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-03-30 DOI:10.1016/j.conbuildmat.2025.141089

Yong Yi , Yingjun Jiang , Ouyang Lou , Yu Zhang , Tian Tian , Jiangtao Fan , Yun Chen

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引用次数: 0

Abstract

The substantial accumulation of construction and demolition waste (CDW) adversely affects both the economy and the environment, making its recycling a crucial strategy to mitigate this issue. To elucidate the application effectiveness of CDW in cement-stabilized macadam (CSM), particularly concerning durability, this study analyzes the impact of recycled aggregate content on the physical and mechanical properties of cement-stabilized macadam. It proposes acceptable maximum recycled aggregate content and composition that do not result in a significant decline in mechanical properties. The mechanical, durability, and fatigue characteristics of cement-stabilized macadam with recycled aggregates (CACSM) were evaluated. Utilizing a genetic algorithm combined with a backpropagation (BP) neural network (GA-BP), the durability performance of CACSM was predicted. The findings indicate that the recycled fine aggregate content can reach up to 58 %, while the recycled coarse aggregate content can reach up to 25 %, without compromising the mechanical strength of CACSM compared to traditional CSM. Furthermore, when the recycled fine aggregate content is less than 45 %, the durability and fatigue performance of CACSM surpass those of CSM. The GA-BP model demonstrated a strong fitting performance for predicting the durability of CACSM.

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.