Behavior of lightweight self-compacted concrete using attapulgite stone as aggregate and subjected to axial load

الملخص EN

This paper presents experimental studies of rectangular concrete beam behaviors under axial load and bending loads and investigating the possibility of producing Lightweight Self-Compacting Concrete (LWSCC) by using the Attapulgite stone with a bulk density of about 776 kg/m3.

The experimental work included (5) specimens which included using the silica fume by 10% and 15% as an addition to the mixture M2 and M3.

The shear span to effective depth (a/d) of beams was (2.5, 2.75, and 3.00).

The test results showed an improvement in the mechanical properties of specimens containing silica fume by 15% , which was tested at 28 days.

The first crack and the ultimate load were decreasing with increasing (a/d) ratios.

Experimental results indicate a significant improvement in the properties of concrete and its resistance to shear stresses, as the axial load improves the shear capacity and reduces the shear failure in the (LWSCC).