Sand Replacement in Structural Lightweight Concrete-Splitting Tensile Strength


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Title: Sand Replacement in Structural Lightweight Concrete-Splitting Tensile Strength

Author(s): Donald W. Pfeifer

Publication: Journal Proceedings

Volume: 64

Issue: 7

Appears on pages(s): 384-392

Keywords: compressive strength;curing;fine aggregates;lightweight aggregate concretes; lightweight aggregates;modulus of elasticity;research;sand (material);splitting tensile strength;testing

Date: 7/1/1967

The splitting tensile strengths of seven structural lightweight concretes containing natural sand fines are reported. This paper is third in a series regarding the partial or com-plete replacement of lightweight fines with sand. The test results show equal splitting strengths for all continuously moist cured lightweight and normal weight concretes when the compressive strengths were equal. However, the splitting strengths of the lightweight concretes were generally reduced when the cylinders were allowed to dry before testing. The use of sand fines minimized this strength reduction.