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首页> 外文会议>第二届自密实混凝土设计、性能及应用技术国际研讨会(2nd International Symposium on Design,Performance and Use of Self-Consolidating Concrete SCC'2009-China) >STRENGTH PROPERTIES AND CHLORIDE PERMEABILITY OF SELF-COMPACTING CONCRETE
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STRENGTH PROPERTIES AND CHLORIDE PERMEABILITY OF SELF-COMPACTING CONCRETE

机译：自密实混凝土的强度性能和氯化物渗透率

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摘要

Strength Properties and rapid chloride penetration resistance of self-compacting concrete mixes are presented in this paper. Four concrete mixtures were prepared with 15, 20, 25, and 30% of Class F fly ash of total powder content of 550 kg/m3. Tests were performed for fresh concrete properties, compressive strength at the ages of 7, 28, and 90 days, splitting tensile strength at the ages of 28, and 90 days and rapid chloride penetration resistance at the age of 90 days according to ASTM 1202 -97. Results indicated increase in compressive strength of 15% and split tensile strength of 36% with decrease in fly ash content from 30% to 15% at 28 days. At other ages also same trend in strength properties of SCC mixes was observed. The rapid chloride penetration resistance for all the mixes was observed to be less than 700 coulomb i.e. Very low as per ASTM 1202-97.
机译：本文介绍了自密实混凝土混合物的强度特性和快速的抗氯离子渗透性。用15％，20％，25％和30％的F级粉煤灰制备了四种混凝土混合物，总粉末含量为550 kg / m3。根据ASTM 1202，对新鲜混凝土的性能，在7、28和90天时的抗压强度，在28和90天时的抗拉强度以及在90天时的抗氯化物的快速渗透性进行了测试- 97。结果表明，在28天时，粉煤灰含量从30％降低到15％，抗压强度提高了15％，劈裂抗张强度提高了36％。在其他年龄段，也观察到了SCC混合物强度特性的相同趋势。观察到所有混合物的快速耐氯化物渗透性均小于700库仑，即根据ASTM 1202-97要求非常低。

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