烧结普通砖(以下简称砖)是国内最常用的建筑墙体材料。早在1985年就制订有国家标准《烧结普通砖》(GB5101-85),代替了1973年的建材局标准《普通粘土砖》(JC 149-73);该标准曾于1993年进行修订,随着建设发展的需要,新的标准《烧结普通砖》(GB 5101-1998)已经颁布,并已规定从1999年2月起正式实施。该标准对砖的质量等级和规格、技术要求、试验方法以及检测规 Sintered ordinary brick (hereinafter referred to as brick) is the most commonly used building wall material in China. As early as 1985, the National Standard “Sintered Ordinary Brick” (GB5101-85) was drafted to replace the 1973 Building Materials Bureau Standard “Ordinary Clay Tile” (JC 149-73); this standard was revised in 1993. With the need of construction and development, the new standard “Sintered Ordinary Brick” (GB 5101-1998) has been promulgated and has been formally implemented since February 1999. The standard for brick quality grades and specifications, technical requirements, test methods, and inspection rules