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EXPERIMENTAL STUDY OF PUNCHING SHEAR OF UNBONDED POST-TENSIONED REINFORCED CONCRETE SLABS

DOI: 10.46573/2658-7459-2021-4-26-32

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Authors

A.V. Gavrilenko, A.V. Levikov, T.R. Barkaya, D.A. Hanygin

Abstract

In this paper there is description of three-layer tongue-and-groove expanded clay concrete blocks, traded under mark “Balaev block”. Their main advantages and disadvantages are listed. It is shown, that there are difficulties with lintel placing above windows and doors in walls of individual houses, made of these blocks. It is connected with insufficiency of compressive strength of internal expanded clay concrete layer under acting of local compressive loads. Experimental study of three blocks were conducted. Blocks were exposed to acting of local compressive loads. Compressive test results are given. Variables were the placing and dimensions of a stamp. Conclusion is made that in some cases bearing capacity of the blocks is sufficient for placing lintels on internal layer without constructing extra bearing elements.

Keywords

expanded clay concrete, concrete blocks, local loading, compressive test.