On the Testing Strength Curve of Clay and Fly Ash Lightweight Aggregate Concrete by Rebound Method

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Testing strength curve of 1400~1900 density grade and LC15~LC50 strength grade lightweight aggregate concrete by rebound method was studied systematically. Results show that, adopting the Chinese national unified testing strength curve, specified by JGJ/T 23-2001 of Technical Specification for Detection of Concrete Compressive Strength by Rebound Method, to detect the lightweight aggregate concrete strength, the strength scaled value obtained is higher, which would reduce the structure assurance coefficient. The special testing strength curve of 1400~1900 density grade and LC15~LC50 strength grade lightweight aggregate concrete were built, and the computed mean relative error and relative standard error are less than 12.0% and 14.0% respectively, meet the error requirement of special curve that specified by JGJ/T 23-2001 of Technical Specification for Detection of Concrete Compressive Strength by Rebound Method.

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Periodical:

Edited by:

Yiwang Bao, Li Tian and Jianghong Gong

Pages:

545-548

DOI:

10.4028/www.scientific.net/AMR.177.545

Citation:

L. X. Gao et al., "On the Testing Strength Curve of Clay and Fly Ash Lightweight Aggregate Concrete by Rebound Method", Advanced Materials Research, Vol. 177, pp. 545-548, 2011

Online since:

December 2010

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$35.00

[1] JGJ 51-2001. Technical Specification for Lightweight Aggregate Concrete (China Building Industry Press, Beijing, China, 2002).

[2] JGJ/T 23-2001. Technical Specification for Detection of Concrete Compressive Strength by Rebound Method (China Building Industry Press, Beijing, China, 2001).

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