摘要
采用肯尼亚火山渣和高吸水树脂作为内养护材料,研究了内养护水不同引入方式对C60高性能混凝土抗压强度的影响。结果表明:(1)火山渣和高吸水树脂对C60混凝土各龄期的抗压强度均有不同程度的降低,其中,高吸水树脂引入内养护水对抗压强度的降低程度更大;(2)火山渣和高吸水树脂对抗压强度的降低程度随着龄期的发展逐渐减小,甚至火山渣掺量较小时(104 kg/m^3),其28 d抗压强度近似等于基准组;(3)与内养护材料引入内养护水相比,简单增加拌合水量对混凝土强度的不利影响更大。
Using the Kenya volcano cinder and super absorbent polymer as internal curing materials, the influence of the modes in which internal curing water on compressive strength of C60 high performance concrete is studied. The results show that, the compressive strength of C60 concrete decreases after the introduction of internal curing water, but the decrease degree decreases gradually with the development of age, even in the later age, the compressive strength of C60 concrete with a small content of volcanic cinder is approximately equal to that of the reference mixture; compared with the internal curing water introduced by super absorbent polymer, the internal curing water introduced by volcanic cinder has less negative influence on compressive strength; compared with the internal curing water introduced by internal curing materials, increasing free mixing water simply affect strongly the compressive strength of concrete.
出处
《混凝土与水泥制品》
北大核心
2018年第11期13-17,共5页
China Concrete and Cement Products
基金
"十三五"国家重点研发计划项目(2016YFC0701000)
关键词
内养护
火山渣
高吸水树脂
抗压强度
Internal curing
Volcano cinder
Super absorbent polymer
Compressive strength
