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THE INTERNAL AND EXTERNAL EFFECT OF A DURSBAN ADDED ON COMPRESSIVE STRENGTH OF CONCRETE | ||
| AL-TAQANI | ||
| Article 1, Volume 25, Issue 3, 2012, Pages 0-0 | ||
| Abstract | ||
| This research show that addition of a dursban to concrete with 1% as percentage of water mixing will reduce the compressive strength of concrete with high percentage . In order to reduce the percentage of decreasing compressive strength of dry mixes concrete with low workability by curing concrete completely or partially with curing water containing 1% a dursban . Research shows that the decreasing percentage at compressive strength of concrete due to added 1% a dursbanfrom mixing water compare with compressive strength of reference concrete are equal to( 80% , 62% , 60% ) at ( 7,28,60 ) day from mixing date . Also research shows that the decreasing parentage at compressive strength of concrete due to curing concrete completely curing water concrete with curing contion1% a dursban compare with compressive strength of reference concrete are equal to ( 4% , 8% , 9.7%) at ( 7, 28 , 60 ) day from mixing date . Also research shows that the decreasing percentage at compressive strength due to partial curing concrete with curing water contains 1% a dursban for 7 days , then curing with ordinary water only until reaching time compare with compressive strength of reference concrete are equal to 9 4% , 2% , 1.25 %) at ( 7,28,60) day from mixing date . | ||
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