高寒高海拔地区外掺减水剂时对混凝土强度的影响研究

Study on Influence of Water-reducing Agent on Strength of Concrete in High Altitude and Cold Regions

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.