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由建设部批准颁布的JGJ/T14—95《砼小型空心砌块建筑技术规程》,从1995年12月1日施行。新规程已将轻骨料砼小砌块作为承重墙体结构材料编入进去,并规定其强度分为MU3.5、MU5.0、MU7.5、MU10四个等级,在地震烈度6、7、8度地区,修建七、六、五层住宅和公用建筑。为此,我们对用天然轻骨料生产承重砌块作了系统的研究。 一、天然轻骨料的种类 试验研究表明,能用于生产承重小型空心砌块的天然轻骨料主要是浮石、火山渣、自燃煤矸石、火山灰质硅藻岩和硅藻土;膨胀珍珠岩和膨和蛭石,不经特殊处理和配料,抗
The JGJ/T14-95 “Technical Specification for Small Hollow Block Buildings” approved and issued by the Ministry of Construction was implemented on December 1, 1995. The new regulations have incorporated lightweight aggregate small blocks as bearing wall structural materials and stipulated that its strength is divided into MU3.5, MU5.0, MU7.5, MU10 four levels, in the earthquake intensity of 6,7 , 8 degree areas, build seven, six, five-story residential and public buildings. For this purpose, we systematically studied the production of load-bearing blocks from natural lightweight aggregates. 1. Tests on the types of natural light aggregates show that the natural light aggregates that can be used to produce small hollow blocks for load bearing are mainly pumice, volcanic slag, self-ignited gangue, diatomite and diatomaceous earth; Rocks and expanded and vermiculite, without special treatment and ingredients, resistance