高寒高海拔地区外掺减水剂时对混凝土强度的影响研究
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摘要
针对高寒高海拔地区,由于昼夜温差大、干燥、缺氧、低气压等不利因素,造成混凝土结构强度达不到要求的现状,通过掺配不同比例的减水剂试验,经过对各组试验的数据分析,综合考虑混凝土使用性能和投资成本等的多重因素,最终得出当减水剂掺配比例为3%的时候比较经济合理,可以有效解决在高寒高海拔地区施工强度达不到要求的问题。
The concrete structure strength cannot meet the requirement of current constructions due to the high altitude,large day and night temperature difference,dryness, hypoxia,low pressure and some other unfavorable factors.This paper made the experiments by mixing different proportions of water reducing agent tests, and analyzed the data of each group test.After studying the performance of the concrete and its cost efficiency,it is concluded that when the ratio of water reducer is 3%,the result is more economical and reasonable.Therefore,it can effectively solve the disadvantages of the constructions in the high altitude and cold regions.
The concrete structure strength cannot meet the requirement of current constructions due to the high altitude,large day and night temperature difference,dryness, hypoxia,low pressure and some other unfavorable factors.This paper made the experiments by mixing different proportions of water reducing agent tests, and analyzed the data of each group test.After studying the performance of the concrete and its cost efficiency,it is concluded that when the ratio of water reducer is 3%,the result is more economical and reasonable.Therefore,it can effectively solve the disadvantages of the constructions in the high altitude and cold regions.
引文
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[8] 龚静,李志鹏,吴建林,等.外加剂对超高掺量粉煤灰混凝土性能影响研究[J].科学技术与工程,2017(5):266-270.
[9] 吴正光,王二飞,许珊珊,等.掺硅藻土的再生型多孔混凝土净化效果及植生分析[J].科学技术与工程,2016(23):263-267.
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[2] 于辉.常用混凝土外加剂对结构性能的影响[J].建筑工程技术与设计,2015(6):1777.
[3] 张俊利.新型混凝土外加剂的选用[M].北京:中国建材工业出版社,2003.
[4] 刘其城,徐协文.混凝土外加剂[M].北京:化学工业出版社,2009.
[5] 钱晓琳,赵石林.混凝土高效减水剂的性能与作用机理[J].南京工业大学学报,2002,24(2):61-64.
[6] 张直云,刘昆赟,滕建奎.基于数值优化模型对不同旧料掺配比例的试验研究[J].科学技术与工程,2014(33):287-289.
[7] 费维水,张直云,吴志强,等.再生高模量沥青混合料劲度模量的影响因素研究[J].公路交通科技,2016(4):20-24.
[8] 龚静,李志鹏,吴建林,等.外加剂对超高掺量粉煤灰混凝土性能影响研究[J].科学技术与工程,2017(5):266-270.
[9] 吴正光,王二飞,许珊珊,等.掺硅藻土的再生型多孔混凝土净化效果及植生分析[J].科学技术与工程,2016(23):263-267.
[10] 许国东,高建明,吕锡武.多孔混凝土水质净化性能[J].东南大学学报:自然科学版,2007(3):504-507.