Compressive strength Recycled aggregate Concrete block InterlockingInterlocking concrete blocks (ICBs) have been recently used worldwide to be alternative conventional blocks. ICBs are more sustainable, low involve low production cost, and environment-friendly as they emit less carbon dioxide than normal ones. ICBs have been used particularly in war zones and places affected by natural disasters where the need for quick, sustainable, low-cost buildings and earthquake-resistant buildings is indispensable. This paper provides a comprehensive literature review about different types of ICBs. It aims to demonstrate different configurations of ICBs incorporated with recycled concrete aggregate (RCA) and other additive materials used for construction. To achieve this, the compares different related studies which analyse the compressive strength results of RCA mixtures with different RCA replacements, w/c ratio, and mix proportions. Additionally, the paper discusses several techniques and methods to improve the behaviour of ICBs.
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