Experimental Research of Creep Properties of Ultra-High-Strength Concrete

Creep tests were conducted on ultra-high-strength concrete with a design strength level of 150 N/mm2, with the parameters being the loading stress, loading age, stepwise increase in the loading stress, and application of high temperatures at early ages. As a result, the creep strain decreased as the...

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Bibliographic Details
Published inConcrete Research and Technology Vol. 19; no. 2; pp. 11 - 19
Main Authors Matsuda, Taku, Kawakami, Hiroshi, Nishimoto, Yoshikatsu
Format Journal Article
LanguageEnglish
Published Japan Concrete Institute 25.05.2008
Subjects
creep
high temperature curing at early ages
loading condition
ultra-high strength concrete
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Summary:Creep tests were conducted on ultra-high-strength concrete with a design strength level of 150 N/mm2, with the parameters being the loading stress, loading age, stepwise increase in the loading stress, and application of high temperatures at early ages. As a result, the creep strain decreased as the loading stress decreased, as the loading age increased, and with high temperature curing at early ages. Also, when using a conventional prediction model, it was found necessary to correct the model by adequately incorporating the effects of the loading stress, loading age, and early-age high temperature curing, so that the creep behavior of an actual structure can be more accurately predicted.
ISSN:1340-4733
2186-2745
DOI:10.3151/crt1990.19.2_11