摘要
通过降低水胶比、掺入活性粉料以及改善养护条件等方法,可以显著改善泡沫混凝土(Foam Concrete-缩写FC)的基体强度和内部孔隙结构,提升FC力学性能。结果表明:随着水胶比增加,FC强度先增加后减小,900级和1200级FC的最优水胶比分别为0.22和0.18;随着硅灰掺量的增加,FC强度逐渐上升,综合成本等因素最优掺量为20%;随着陶粒掺量的增加,FC的28d强度先增加后减小,最优掺量为50%;随着养护温度的增加,陶粒FC28d强度升高。
By reducing the water-cement ratio,using incorporation of active powder and improving the curing condition,the cementitious matrix strength and the pore structure are significantly improved which can enhance the mechanical properties of foam eoncrete,the test results shows that：with the water -binder ratio increases the compressive strength of foam concrete will be decreased,the optimal water-binder ratio of the foam concretes whose dry density are 900 kg/m3 and 1200 kg/m3 are O.22 and O.18 respectively.With the increase of silica fume,the compressive strength of foam concrete gradually increases,however,for reduce the costs the optimum content is 20％.With the increase of ceramsite,the 28-day strength of foam concrete increases first and then decreases,the optimal content is 50％.With the increase of curing temperature,the compressive strength of ceramsite foam concrete increased.
出处
《低温建筑技术》
2014年第9期8-11,共4页
Low Temperature Architecture Technology
基金
装配整体式框架结合综合性能提升及工程应用新技术(财企(2012)171号)
南京航空航天大学青年科技创新基金(NS2013009)
关键词
FC
陶粒
抗压强度
养护温度
foam concrete
ceramsite
compressive strength
curing temperature
