高海拔高寒地区公路工程混凝土质量控制研究

Study on the Quality Control of Cement Concrete Engineering in High Altitude and Cold Area

以青海大武至久治高寒高海拔地区公路扩建工程混凝土质量特征为依托,从混凝土施工质量控制和混凝土浇筑、养护质量控制等方面对高原高寒地区气候、地质条件复杂,施工周期短,气温低等情况下的混凝土施工质量控制进行了研究。研究结果表明,通过混凝土原材料加热、混凝土浇筑过程中搭设保温棚、浇筑后保温覆盖等方法来对混凝土施工的质量进行控制,其控制效果良好,确保高原地区混凝土施工质量。该质量控制体系能最大程度的减少高寒地区公路工程混凝土施工中质量问题的发生,可为类似条件下公路工程水泥混凝土质量的提升提供参考。

Base on the concrete quality characteristics of Qinghai expansion highway from Dawu to Jiuzhi , which locates in Alpine high altitude areas, the concrete construction quality analyzed from the aspects of quality control of concrete construction and concrete pouring, maintenance and quality control of plateau alpine climate, complex geological conditions, short construction period and low temperature conditions. The results show that, with heating of concrete raw material in the process of concrete pouring, the erection of insulation shed, after pou- ring the covering method, the quality of concrete construction can be ensured. The quality control system can re- duce the quality problems of the highway engineering concrete construction in the alpine region, and provide refer- ence for the improvement of the quality of the cement concrete in the highway engineering under similar conditions.