Title of article :
CPT as an evaluation method of concrete mixture for ASR expansion
Author/Authors :
Yamada، نويسنده , , Kazuo and Karasuda، نويسنده , , Shinya and Ogawa، نويسنده , , Shoichi and Sagawa، نويسنده , , Yasutaka and Osako، نويسنده , , Masahiro and Hamada، نويسنده , , Hidenori and Isneini، نويسنده , , Mohd، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
8
From page :
184
To page :
191
Abstract :
Highly reactive andesite aggregates including opal or tridymite were evaluated by concrete prism test (CPT) in two ways and the suitable conditions of CPT were discussed. 18 concrete mixtures were used to examine the effect of the type and content of aggregate, the type of cementitious material. Two methods for detecting for ASR reactivity were used; RILEM AAR-4 and JASS 5N, and the latter one is of which authors revised few points. As the results, different performances of andesite depending on the size and the different required amounts of fly ash suppressing ASR depending on the mixture proportion were well demonstrated by CPT that is difficult for mortar bar test. As a curing method to avoid alkali leaching, wrapping with wet paper showed much less leaching than curing in a sealed box. From the viewpoint of easiness of operation, small size 75 × 75 × 250 mm is suitable than large size 100 × 100 × 400 mm.
Keywords :
Pessimum phenomena , Alkali Leaching , Fly ash , Alkali silica reaction (ASR) , Concrete prism test (CPT)
Journal title :
Construction and Building Materials
Serial Year :
2014
Journal title :
Construction and Building Materials
Record number :
1637092
Link To Document :
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