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为西部大开发提供技术支持、保证混凝土工程质量、以青海省玉树援建项目为依托,开展了高原干燥高寒地区混凝土碳化性能研究。在相同外部环境条件下,研究混凝土粉煤灰掺量、混凝土强度等级对混凝土碳化的影响;在相同混凝土配合比、相同二氧化碳浓度条件下,研究温湿度对混凝土碳化的影响;研究不同地区混凝土碳化情况。研究表明:随粉煤灰掺量的提高、混凝土强度的降低,混凝土碳化深度增大;随温度的增高、相对湿度的降低,混凝土碳化深度增大;环境温度对混凝土碳化的影响大于环境相对湿度对混凝土碳化的影响。
In order to provide technical support for the development of the western region and ensure the quality of concrete projects, the research on carbonation of concrete in dry and alpine regions was carried out based on the Yushu aid project in Qinghai Province. Under the same external environment conditions, the effects of concrete fly ash content and concrete strength grade on concrete carbonation were studied. The effect of temperature and humidity on concrete carbonation was studied under the same concrete mix ratio and same carbon dioxide concentration condition. Happening. The results show that with the increase of fly ash content, the concrete strength decreases and the carbonation depth of concrete increases. With the increase of temperature, the relative humidity decreases and the carbonation depth of concrete increases. The influence of ambient temperature on concrete carbonization is greater than that of environment relative humidity Impact on concrete carbonization.