Effects of Incomplete Conolidation on Conpressive and Flexural Strenght, Ultrasonic Pulse Velocity, and Dynamic Modulus of Elasticity of Concrete

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Title: Effects of Incomplete Conolidation on Conpressive and Flexural Strenght, Ultrasonic Pulse Velocity, and Dynamic Modulus of Elasticity of Concrete

Author(s): M. F. Kaplan

Publication: Journal Proceedings

Volume: 56

Issue: 3

Appears on pages(s): 853-868

Keywords: none

Date: 3/1/1960

Abstract:
An experimental investigation has been conducted to determine the effects of voids due to incomplete consolida-tion on the compressive and flexural strength, ultrasonic pulse velocity, and dynamic modulus of elasticity of con-crete. Concrete mixes having cement: aggregate:water ratios of 1:3:0.35, 1:6:0.50, and 1:9:0.66, by weight, were used to make QO x 4 x 4-in. beams and 6-in cubes for resonant frequency and flexural and compressive strength tests. The tests were done after 7, 28, and 91 days. Pulse velocity measurements were also made on all specimens before carrying out the other tests. The amount of consolidation was varied by vibrating the concrete for different lengths of time. The maximum void content was 3Q percent. The effects of incomplete consolidation on compressive and flexural strength, pulse velocity, and dynamic E are reported and the interrelationships between these properties examined.