海水海砂再生混凝土的抗压强度研究
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摘要
在实验的基础上,研究海水海砂再生混凝土抗压强度随养护时间的变化规律。结果表明:海水海砂再生混凝土的早期强度增长较快,而在后期强度却有所降低;海水海砂再生混凝土在各养护龄期时的立方体抗压强度与灰水比之间呈良好的线性关系;C20、C30及C40级的海水海砂再生混凝土90d龄期时满足强度发展大致与28d龄期的对数成正比关系。
On the basis of experiments, the variation of compressive strength of seawater and sea sand recycled concrete with the maintenance time is studied. The results show that the early strength of seawater and sea sand recycled concrete increases rapidly,but decreases at the later stage,and the cubic compressive strength of seawater and sea sand recycled concrete has a good linear relationship with the ratio of ash to water at each curing age. C20,C30 and C40 grades of seawater and sea sand recycled concrete 90 D age are in direct proportion to the logarithm of28 D age in meeting strength development.
On the basis of experiments, the variation of compressive strength of seawater and sea sand recycled concrete with the maintenance time is studied. The results show that the early strength of seawater and sea sand recycled concrete increases rapidly,but decreases at the later stage,and the cubic compressive strength of seawater and sea sand recycled concrete has a good linear relationship with the ratio of ash to water at each curing age. C20,C30 and C40 grades of seawater and sea sand recycled concrete 90 D age are in direct proportion to the logarithm of28 D age in meeting strength development.
引文
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[4]奥兰尼.再生混凝土(RAC)的特性试验研究[D].武汉:武汉理工大学,2008.
[5]肖建庄,张鹏,张青天,等.海水海砂再生混凝土的基本力学性能[J].建筑科学与工程学报,2018(2):16-22.
[6]王倩,崔启兵,徐海群.海水侵蚀环境下再生混凝土的损伤劣化研究[J].四川建筑科学研究,2017(4):49-53.
[2] XIAO J Z,QIANG C B,NANNI A,et al.Use of seasand and seawater in concrete construction:Current status and future opportunities[J].Construction and Building Material,2017(9):1101-1111.
[3]杜婷,李惠强,覃业伟,等.再生混凝土未来发展的探讨[J].混凝土,2002(4):49-51.
[4]奥兰尼.再生混凝土(RAC)的特性试验研究[D].武汉:武汉理工大学,2008.
[5]肖建庄,张鹏,张青天,等.海水海砂再生混凝土的基本力学性能[J].建筑科学与工程学报,2018(2):16-22.
[6]王倩,崔启兵,徐海群.海水侵蚀环境下再生混凝土的损伤劣化研究[J].四川建筑科学研究,2017(4):49-53.