CAJ | 학술논문

采用单面冻融法测试了机场道面混凝土在不同浓度甲酸钠溶液中的抗冻性，并用试件表面剥落量作为混凝土抗冻性评定参数。结果表明，混凝土在中低浓度甲酸钠溶液中冻融破坏最严重，在高浓度和水中破坏较轻。并从混凝土吸水率和除冰剂结冰膨胀率两方面对试验结果进行了分析。结果表明，在冻融过程中混凝土吸水率大小和除冰剂本身结冰膨胀率大小共同决定了混凝土在除冰剂中的冻融破坏速率。
채용단면동융법측시료궤장도면혼응토재불동농도갑산납용액중적항동성，병용시건표면박락량작위혼응토항동성평정삼수。결과표명，혼응토재중저농도갑산납용액중동융파배최엄중，재고농도화수중파배교경。병종혼응토흡수솔화제빙제결빙팽창솔량방면대시험결과진행료분석。결과표명，재동융과정중혼응토흡수솔대소화제빙제본신결빙팽창솔대소공동결정료혼응토재제빙제중적동융파배속솔。
The freezing-thawing durability of airfield pavement concrete in different salt concentration is measured by single side freezing-thawing method, and the amount of samples’ scaling is regarded as evaluation parameters of the freez-ing-thawing durability of concrete. Results show that the freezing-thawing damage is the most serious in low salt concen-tration, while that in high salt concentration and water is much slighter. Then the result is analyzed by two sides which are water absorption rate of concrete and freezing expansion rate of deicer. Results indicate that the concrete bibulous rate and deicing agent itself freezing inflation rate both determine the concrete freezing-thawing damage rate.