Abstract
The application of recycled clay brick can not only solve the disposal problem of demolished solid waste but also reduce ecological environment damage caused by the excessive development of resources. Clay brick powder (CBP) exhibits pozzolanic activity and can be used as cement replacement. Recycled clay brick aggregate (RBA) can be used to substitute natural coarse aggregate. Recycled clay brick aggregate concrete (RBAC) can attain suitable strength and be used in the production of medium- and low-strength concrete. Clay brick waste as potential partial cement and aggregate replacement material is reviewed herein. Performances in terms of mechanical and durability-related properties of mortar and concrete are discussed. Understanding the properties of clay bricks is crucial to further research and applications.
Highlights
Clay brick structures are widely used worldwide
Clay brick waste from demolished brick walls accounted for approximately 54% of construction and demolition waste in Spain [4]
The replacement of Clay brick powder (CBP) in mortar yielded reduced compressive strength, studies by Ortega et al [21] confirmed that the addition of CBP did not reduce the compressive strength of the mortars, which satisfied the requirements of corresponding standards. It showed the beneficial effect of pozzolanic activity and filling effect of CBP in the performance of mortars. e compressive strength of all the studied mortars increased with hardening age, and the value for BP10 (10% brick powder) specimens was slightly higher than those noted for CEM I ones at 400 days
Summary
Clay brick structures are widely used worldwide. In the early days of the founding of China, many clay brick structures were built. China produced approximately 15.5 million tonnes of construction waste each year, primarily concrete and brick. According to the report of the European Union in 2011, approximately 1 billion tonnes of construction and demolition waste (CDW) were produced in the European Union each year, which contained plenty of bricks [3]. As landfills and reclamation areas are limited, the landfill of waste clay bricks occupies valuable land resources and damages the soil structure, resulting in a poor grain yield. Clay brick wastes have a high resource value and many countries are reusing them for many applications in construction activities. Because of limited landfill space and costly natural aggregates, the application prospect of crushed clay bricks as a new civil engineering material must be investigated. To provide a reference for further research on waste clay bricks, the reuse of waste clay bricks in concrete engineering is summarised extensively. e mechanical properties and durability of mortar using clay brick waste as cement or sand are described, and the mechanical properties and durability of concrete containing RBA are summarised. e potential application of RBAC on structural members is discussed as well
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
