泡沫混凝土性能研究进展

A Progress of Studies on Properties of Foam Concrete

虽然泡沫混凝土主要作为填充材料和保温材料已经在使用,但是其轻质、节材以及有大量使用诸如粉煤灰这样的工业废料的潜力,被重新重视。本文重点阐述按照泡沫混凝土的组成材料(泡沫剂、水泥以及其他使用到的材料)、拌和性能、性能试验方法以及泡沫混凝土新拌和硬化后的性能进行分类。在调研的基础上,确定了需要进行以下方面的深入研究:(1)开发性能可靠的泡沫剂和发泡机;(2)研究泡沫剂和其他外加剂之间的兼容性,轻骨料和增强材料如纤维的使用;(3)耐久性研究;(4)泡沫混凝土生产当中的影响因素,即拌和、运输和泵送。

Though .foam concrete was initially envisaged as a void filling and insulation material, there have been renewed interest in its structural characteristics in view of its lighter weight, savings in material and potential for large scale utilization of wastes like fly ash. The focus of this paper is to classify literature on foam concrete in terms of constituent materials （ foaming agent, cement and other fillers used ）, mix proportioning, production methods, fresh and hardened properties of foam concrete. Based on the investigation, the following research needs have been identified： （i）developing affordable foaming agent and foam generator, （ii） investigation on compatibility between foaming agent and chemical admixtures, use of lightweight coarse aggregate and reinforcement including fibers, （ iii ）durability studies, and （ iv ）factors influencin foam concrete mixing, transporting and pumping.