不同防冻剂对商品混凝土性能和成本的影响

Effect of Different Antifreeze Agents on the Performance and Cost of Commercial Concrete

针对冬季施工的特点,通过向C 20和C 40混凝土中分别掺入A^G等7种类型的防冻剂,达到混凝土在-10℃时无冻害,转入正常温度后强度能继续增长,并且静停1 h后坍落度保持在180~200 mm。在此基础上比较了混凝土的材料成本。

According to the specific conditions during winter construction,mixed with 7 A -G different kinds of antifreeze agents respectively into C 20 and C40 concrete, concrete cannot be frozen even under -10 ℃ and under the normal temperature its strength can be increased and 1 hs delaying curing its collapsed slump keeps between 180 ～200 mm. Thus on the basis of the result above, the material cost of concrete is compared as well.