论文部分内容阅读
由于浮石混凝土中浮石骨料多棱角、表面粗糙，开放孔多而密集，故其拌合物和易性差，耗水泥量多，应用时，尤其是配制低强度浮石混凝土时，浮石混凝土拌合物多处于贫浆状态，施工质量差。通过采取掺引气剂的方法，研究引气剂掺量对贫浆浮石混凝土拌合物的和易性及其强度、抗冻性、保温性等影响规律，提出贫浆浮石混凝土中掺入适量引气剂的必要性和合理性，并确定出引气剂适宜掺量范围。
Because the pumice aggregate in the pumice stone has many corners, rough surfaces, and many open pores, the mixture has poor workability and consumes large amount of cement. When it is used, especially in the preparation of low-strength pumice concrete, the pumice concrete mixture Most of them are in a poor slurry state, and the construction quality is poor. Through the method of adding air-entraining agents, the influence law of air-entraining agent content on the workability, strength, frost-resistance, and heat-retaining properties of poor-powdered pumice concrete mixes was studied, and a suitable amount of pumice stone concrete was incorporated. The necessity and rationality of the air-entraining agent and the appropriate range of air-entraining agent are determined.