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养护条件对煤矸石泡沫混凝土 力学性能的影响
作者：李月香1，俞心刚2，李超刚3
（1.河北工程技术学院，河北 石家庄 050000；
2.重庆大学 材料科学与工程学院，重庆 400044；3.河北浚源工程勘察设计有限公司，河北 石家庄 050000）
摘要：对比标准养护、低压蒸汽养护和60 ℃温养对煤矸石泡沫混凝土力学性能的影响，结果表明，3 d龄期时低压蒸汽养护和60 ℃温养条件下分别比标准养护条件下的强度提高了2倍和1倍；28 d龄期时低压蒸汽养护和60 ℃温养的强度相近，比标准养护下提高约0.5倍。XRD分析表明，低压蒸汽养护和60 ℃温养下Aft含量高，Ca（OH）2含量低，从而强度比标准养护高很多。因此可以根据对煤矸石泡沫混凝土力学性能的需求，选择适当的养护方法，使其应用范围更加广泛。
关键词：泡沫混凝土；养护条件；抗折强度；抗压强度；XRD分析
中图分类号：TU528.2 文献标识码：A 文章编号：1001-702X（2019）07-0098-04
Influence of curing conditions on strength of gangue foam concrete
LI Yuexiang1，YU Xingang2，LI Chaogang3
（1.Hebei Engineering and Technology College，Shijiazhuang 050000，China；
2.School of Materials Science and Engineering，Chongqing University，Chongqing 400044，China；
3.Hebei Junyuan Engineering Survey and Design Co. Ltd.，Shijiazhuang 050000，China）
Abstract：In this paper，through the comparison and analysis of three curing methods，i.e. standard curing，low pressure steam curing and 60 ℃ temperature curing，the results show that the strength of low pressure steam curing and 60 ℃ temperature curing at 3 d days old is 2 times and 1 times higher than that under standard curing，respectively，and the strength of low pressure steam curing and 60 temperature curing at 28 d days old is similar，and 0.5 times higher than that under standard curing. XRD analysis showed that Aft content was higher and Ca（OH）2 content was lower under low pressure steam curing and 60 ℃ temperature curing, so the strength was much higher. Therefore, according to the demand for mechanical properties of coal gangue foam concrete, appropriate maintenance methods should be selected to make the application scope wider.
Key words：foamed concrete，curing conditions，flexural strength，compressive strength，XRD analysis