混凝土抗碳化性能影响因素试验研究

为了探究不同影响因素对混凝土抗碳化性能的影响,用快速碳化试验方法对11组试块进行了不同的试验.试验结果表明,随着水胶比的增大混凝土抗碳化性能降低;粉煤灰掺量在30%以内对混凝土的抗碳化性能有提升作用;河砂和机制砂共同拌制的混凝土抗碳化性能好于单一砂拌制的混凝土;随着温度的升高混凝土的抗碳化性能降低;湿度在75%以内时混凝土抗碳化性能随湿度的增加而降低.

Experimental study on influencing factors of concrete carbonation resistance

In order to study the influence of different factors on the carbonation resistance of concrete,the rapid carbonation test method was used to test 11 groups of concrete blocks.The test results show that the carbonation resistance of concrete decreases with the increase of water-binder ratio,the carbonation resistance of concrete increases with the content of fly ash less than 30%,the carbonation resistance of concrete mixed with river sand and machine-made sand is better than the concrete mixed with single sand,the higher the temperature,the worse the carbonation resistance of concrete.Within 75%,the carbonation resistance of concrete decreases with the increase of humidity.