Influence of Aggregates on Cracking Resistance of Concrete at Early Age

Bo Chen; Jian Tong Ding; Yue Bo Cai

doi:10.4028/www.scientific.net/AMM.151.474

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 151Influence of Aggregates on Cracking Resistance of...

Influence of Aggregates on Cracking Resistance of Concrete at Early Age

Abstract:

In order to investigate influence of aggregates on cracking resistance of concrete at early age, four kinds of aggregates, i.e. syenite, basalt, marble and sandstone, were used for the test on cracking resistance of hydraulic concretes by the temperature stress testing machine. Analogy analysis was carried out with test results of concretes with two gradings of aggregates. The results show that aggregates affect elastic modulus, thermal expansion coefficients and tensile creep behavior of concrete at early age. However, the temperature rise of concrete was slightly affected by various types and gradings of aggregate. Moreover, the cracking temperature is reliably to be used to quantitatively evaluate the influence of aggregates on cracking resistance of concrete at early age.

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Periodical:

Applied Mechanics and Materials (Volume 151)

Pages:

474-479

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.151.474

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Online since:

January 2012

Authors:

Bo Chen, Jian Tong Ding, Yue Bo Cai

Keywords:

Aggregates, Crack, Early Age, Thermal Stress

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