最近,由中国建筑科学研究院牵头负责,完成了对《轻集料及其试验方法第1部分:轻集料》GB/T17431.1-1998和《轻集料及其试验方法第2部分:轻集料试验方法》GB/T17431.2-1998的修订,并已通过中国建材联合会标准质量部组织的专家审查,修订 Recently, led by China Academy of Building Research, completed the “light aggregate and its test methods Part 1: Light aggregate” GB / T17431.1-1998 and “Light aggregate and its test methods Part 2: Light set Materials Test Method ”GB / T17431.2-1998 amendments, and has passed the China Building Materials Federation of Standards and Quality Organization of the experts review, revision