Capacity of Concrete Block Masonary Prisms under Eccentric Compressive Loading

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Title: Capacity of Concrete Block Masonary Prisms under Eccentric Compressive Loading

Author(s): Robert G. Drysdale and Ahmad A. Hamid

Publication: Journal Proceedings

Volume: 80

Issue: 2

Appears on pages(s): 102-108

Keywords: axial loads; compressie strength; concrete blocks; eccentric loads; grouting; loads (forces); masonry; masonry walls; prisms; structural analysis.

Date: 3/1/1983

Abstract:
Two hundred and twenty block masonry prisms were tested under eccentric compressive loads having eccentricity to thickness ratios of 0, 1/6, 1/3, and 5/12. The influences of grouting, percent solid, block size, and block strength for different eccentricities were studied. The results show that the strengths of the block and grout do not have a significant effect on the relative decrease of capacity with increasing eccentricity. The percent solid has considerable effect on the relative capacities for ungrouted prisms. For ungrouted prisms the increase in extreme fiber ultimate compressive stress with increased eccentricity was small, indicating no effect on the strain gradient for hollow blocks. For solid and grouted prisms there was a significant increase in extreme fiber ultimate compressive stress with increased eccentricity (increased strain gradient).