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(一)石灰烧粘土水泥的特殊性能与使用上的注意事项: 当前农业生产大跃进,广泛兴修农田水利工程,因此水泥的供给是迫切需要解决的任务,根据这一形势,推广地方性水泥,首先是石灰烧粘土水泥是符合多快好省的精神的,因为农村建筑和农田水利工程大半是使用低标号的砂浆和低标号的混凝土,石灰烧粘士水泥虽然强度低,但具有水硬性,能够在水中结硬,有一定的抗渗强力,所以可以在水利工程中使用,它的缺点是容易风化,早期凝结慢,强度低,抗磨性和抗冻性差,在低温环境不易硬化,在水中不能结硬,在干燥环境下后期强度降低等,结合在农村中使用,应
(1) Attentions on the special properties and use of lime-fired clay cement: At present, great progress has been made in agricultural production, and irrigation and water conservancy projects have been widely used. Therefore, the supply of cement is an urgent task to be solved. According to this situation, local cement is promoted. The first is that lime-fired clay cement is in line with the spirit of a more rapid province because most of the rural construction and farmland and water conservancy projects use low-grade mortar and low-grade concrete. Although lime-fired cement has low strength, it has hydraulic properties. It can be hardened in water and has a certain impermeability, so it can be used in water conservancy projects. Its disadvantages are that it is easily weathered, its early condensation is slow, its strength is low, its abrasion resistance and frost resistance are poor, and it hardly hardens in a low temperature environment. The water can not be hardened, and the strength in the later period is reduced in a dry environment.