随着我国城市化和现代化建设的快速发展,大量老旧建筑的拆除、改造会产生大量的建筑废料,其中粘土砖的占比约为40%。将废旧粘土砖破碎、筛分处理后制得再生砖骨料,使用该骨料拌制的再生混凝土称为再生砖骨料混凝土(Recycled Brick Aggre...随着我国城市化和现代化建设的快速发展,大量老旧建筑的拆除、改造会产生大量的建筑废料,其中粘土砖的占比约为40%。将废旧粘土砖破碎、筛分处理后制得再生砖骨料,使用该骨料拌制的再生混凝土称为再生砖骨料混凝土(Recycled Brick Aggregate Concrete, RBAC)。从砖骨料基本性能、RBAC力学性能、RBAC性能影响因素以及骨料强化方法4个方面综述了再生砖骨料和RBAC的研究现况,并从骨料大规模制备、骨料强化标准、混凝土性能优化、试件长期性研究几个方面提出对未来的展望。With the rapid development of urbanization and modernization in our country, a large number of old buildings are demolished and renovated, resulting in a significant amount of construction waste, with clay bricks accounting for about 40% of this waste. Recycled brick aggregate is obtained by crushing and screening waste clay bricks, and the concrete prepared with this aggregate is called Recycled Brick Aggregate Concrete (RBAC). This paper reviews the current state of research on recycled brick aggregate and RBAC from four aspects: the basic properties of brick aggregate, the mechanical properties of RBAC, the factors affecting the performance of RBAC, and methods of aggregate reinforcement. It also proposes future prospects in terms of large-scale production of aggregates, standards for aggregate reinforcement, optimization of concrete performance, and long-term research on specimens.展开更多
文摘随着我国城市化和现代化建设的快速发展,大量老旧建筑的拆除、改造会产生大量的建筑废料,其中粘土砖的占比约为40%。将废旧粘土砖破碎、筛分处理后制得再生砖骨料,使用该骨料拌制的再生混凝土称为再生砖骨料混凝土(Recycled Brick Aggregate Concrete, RBAC)。从砖骨料基本性能、RBAC力学性能、RBAC性能影响因素以及骨料强化方法4个方面综述了再生砖骨料和RBAC的研究现况,并从骨料大规模制备、骨料强化标准、混凝土性能优化、试件长期性研究几个方面提出对未来的展望。With the rapid development of urbanization and modernization in our country, a large number of old buildings are demolished and renovated, resulting in a significant amount of construction waste, with clay bricks accounting for about 40% of this waste. Recycled brick aggregate is obtained by crushing and screening waste clay bricks, and the concrete prepared with this aggregate is called Recycled Brick Aggregate Concrete (RBAC). This paper reviews the current state of research on recycled brick aggregate and RBAC from four aspects: the basic properties of brick aggregate, the mechanical properties of RBAC, the factors affecting the performance of RBAC, and methods of aggregate reinforcement. It also proposes future prospects in terms of large-scale production of aggregates, standards for aggregate reinforcement, optimization of concrete performance, and long-term research on specimens.
