Study on Mortar Rebound Method for Masonry Structure Blocks of Concrete Products

The relevant provisions of the mortar rebound method in the national code GB/T50315 “Technical Standards for site testing of masonry engineering” is only focus on mortar rebound method of sinter bricks, but whether the rebound curve of sintered brick mortar can be used for non-sintered brick mortar is uncertain. Therefore, the rebound curve of non-sintered brick mortar needs to be further studied. The mortar rebound method of sintered bricks is used as a model for the research process for mortar rebound method of other blocks, and the mortar of three widely used blocks of concrete products in masonry structures is selected as the research object. In the end, the mortar rebound curves for mortars of three widely used blocks are obtained through relevant tests, the results showed that the mortar rebound curves of sintered brick and non-sintered brick are completely different, thus broadening the application area of the mortar rebound method.