摘要
研究了盐冻循环作用对锂渣混凝土(LiC)和钢-聚丙烯混杂纤维锂渣混凝土(HFC)的质量损失、抗压强度、动弹性模量、基振频率以及溶液吸入量的影响。结果表明:随盐冻循环次数的增加,LiC和HFC均呈现质量损失率逐渐增大、抗压强度先增加后减小、动弹性模量前期稳定后期逐渐减小、溶液吸入量(Ws)先减小后增加的变化规律。将二者对比可以发现,钢-聚丙烯混杂纤维掺入混凝土可以减小盐冻作用对混凝土的内部损伤,显著提高混凝土的抗盐冻性能。
Effects of deicer-frost on the mass loss,compressive strength,the dynamic elastic modulus,base frequency and the solution absorption of lithium slag concrete and steel-polypropylene hybrid fiber reinforced concrete were investigated under freezing thawing cycles.With the increase of the number of salt-freezing cycles,both LiC and HFC showed that the mass loss rate increased,the compressive strength first increased and then decreased,the early stability of dynamic elastic modulus decreased gradually,and the variation of solution absorption first decreased and then increased.The comparison can show that the steel-polypropylene hybrid fiber can reduce the internal damage of concrete in deicer-frost condition and improve the freezing thawing-resistant performance of concrete.
作者
张广泰
田虎学
李宝元
张继飞
王玉喜
ZHANG Guangtai;TIAN Huxue;LI Baoyuan;ZHANG Jifei;WANG Yuxi(Civil Construction College,Xinjiang University,Urumqi 83004)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2018年第14期2396-2399,2406,共5页
Materials Reports
基金
国家自然科学基金(51568064)
新疆维吾尔自治区自然科学基金(2014211A006)
关键词
钢-聚丙烯混杂纤维
盐冻
抗压强度
溶液吸入量
动弹性模量
质量损失
steel polypropylene hybrid fiber reinforced concrete
deicer frost
compressive strength
solution absorption,dynamic elastic
mass loss
