泡间水对泡沫混凝土抗压强度影响规律研究  

Influence law of foamed water on the compressive strength of foam concrete

作　　者：胡曙光[1] 关凌岳 王发洲[1] 杨露[1] 齐广华 张旭龙 

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点实验室,湖北武汉430070 [2]华新混凝土武汉有限公司,湖北武汉430080 [3]湖北省建筑科学研究设计院,湖北武汉430071

出　　处：《功能材料》2013年第B12期205-209,共5页Journal of Functional Materials

基　　金：中央高校基本科研业务费专项资金资助项目(2012-Ia-001;2012-ZY-001)

摘　　要：采用预制发泡法制备泡沫混凝土的过程中,外加水量的引入分为拌合用水和预制泡沫中的含水量(指泡沫液膜与液膜间的含水);预制泡沫中的含水量(泡间水)在新拌浆体中的瞬时变化规律对泡沫混凝土性能具有重要影响。通过光学显微镜、图像分析与统计的方法研究了预制泡沫中泡间水量变化规律及其对泡沫性质的影响,以及对泡沫混凝土抗压强度与孔结构的影响。结果表明,泡沫稳定性随泡间水含量的增加有一个先上升后下降的过程,当泡间水厚度为53μm时,泡沫稳定性最好;泡间水的变化规律对抗压强度的影响表明,样品抗压强度不是随着总水胶材比的升高而降低,而是与泡间水变化规律相同,此外,泡间水含量还对泡沫混凝土孔结构分布有一定影响。Adopting prefabricated foam method to prepare foam concrete. In this process, the introduction of external water was divided in mixing water and the water inside prefabricated foam which between foam liquid films was named foamed water. The instantaneous change rule of foamed water in fresh mixed slurry has im portant effect on the properties of foam concrete. This paper mainly researched the change of foamed water effect on foam properties, compressive strength and pore structure of foam concrete through optical micro scope, image analysis and statistics method. The results showed that with the increase of foamed water con-tent, foam stability rose first and fell then, achieved the best when foam water thickness was 53μm. The com pressive strength results suggested that following the increased total water ratio, compressive strength was not decrease but changed along with the variation of the foamed water content. In addition, the change of foamed water also has an effect on pore structure in pore size distribution.

关 键 词：泡沫混凝土 泡间水量 图像分析 抗压强度 泡沫稳定性 

分 类 号：TU528.2[建筑科学—建筑技术科学]