摘要
本文针对我国冬季水泥混凝土路面常年遭受冰雪灾害,使用除冰盐对路面造成侵蚀损害现象,分析了盐冻对混凝土的破坏原理,通过试验比较两种不同除冰盐NaCl、CaCl2在冻融环境下对混凝土质量损失和相对动弹性模量等耐久性因素的影响,得出混凝土在除冰盐NaCl、CaCl2在冻融环境下,随冻融次数的增加,试块表面剥浊腐蚀严重,动弹性模量逐渐下降,力学性能变差,抗压强度降低;两种除冰盐在各自不同浓度3%、6%、12%、25%冻融环境下,3%盐冻的试块破坏最为严重,试块表面剥落露骨,相对动弹性模量迅速降低。
For the winter in our country, the cement concrete pavement suffered snow disaster all year round, using de-icing salt lead to the phenomenon of pavement corrosion damage, analyses the basic principle of salt freeze-thaw damage to the concrete. Comparing two different NaCI and CaCl2 deicing salt erode concrete , to study the influence on concrete durability factors such as quality loss and relative dynamic elastic modulus. Concrete in the deicing salt NaCl and CaC12 in freeze-thaw environment, with the increase of the number of freezing and thawing, the block surface strip seriously, dynamic elastic modulus is falling, mechanical properties, compressive strength is reduced. Two kinds of deicing salt in different concentration 3% , 6% , 12% , 25% , freeze-thaw environment, 3% salt frozen block most serious destruction, block surface spalling sexually explicit, relative dynamic elastic modulus reduced quickly.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2013年第12期2632-2636,共5页
Bulletin of the Chinese Ceramic Society
