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蒸养粉煤灰混凝土砌块(卽蒸养粉煤灰硅酸盐砌块,以下簡称粉煤灰混凝土砌块)是由粉煤灰、石灰、石膏、集料和水經过搅拌、成型、蒸汽养护而成。几年来在試驗研究、生产实践和推广使用中,在掌握它的性能方面也积累了一定的經驗,摸到了一些规律。从目前国内生产水平来看,它的强度指标已能稳定在100号以上,具有足够的耐久性;其他使用性能也均滿足了一般筑墙材料的要求。但是,由于这种砌块是新的筑墙材料,国内外都没有足够的生产和使用經驗;在我国已建成的建筑物考驗时間还不长,因此,对于这种砌块的某些性能必須郑重对待,特别是粉煤灰混凝土的强度均匀性、长期强度稳定性和收縮性等使用性能問題。
Steam-fed fly ash concrete blocks (卽 steamed fly ash silicate blocks, hereinafter referred to as fly ash concrete blocks) are made of fly ash, lime, gypsum, aggregate, and water after stirring and forming Steam curing. Over the past few years, in experimental research, production practice, and promotion, some experience has been accumulated in the control of its performance, and some laws have been learned. From the current domestic production level, its strength index has been able to stabilize at 100 or more, with sufficient durability; other performance also meet the requirements of the general building materials. However, due to the fact that such blocks are new wall materials, there are not enough domestic and foreign experiences in production and use; buildings that have been built in China have not yet been tested for a long time. Therefore, certain properties of such blocks are not available. Must be treated seriously, especially the fly ash concrete strength uniformity, long-term strength stability and shrinkage and other performance issues.