4.1.2胶泥、砂浆的质量要求及配制,铺砌块材的要求,应符合本规范有关章节的规定。 4.2 4.2.1块材使用前应经挑选,并应洗净,干燥后备用。 4.2.2块材铺砌前,宜先试排;铺砌时,铺砌顺序应由低往高,先地坑、地沟,后地面、踢脚板或墙裙。阴角处立面块材应压住平面块材,阳角处平面块材应盖住立面块材,块材铺砌不...
筑灵网,为工程专业技术人员提供专业周到服务平台。是专业技术人员工作的必备网站平台,《建筑防腐蚀工程施工规范》GB50212-2014
筑灵网,为工程专业技术人员提供专业周到服务平台。是专业技术人员工作的必备网站平台,《建筑防腐蚀工程施工规范》 GB 50212-2014
There is provided a process for producing oxirane compound comprising treating with hydrogen peroxide in the presence of either an olefin oxidation catalyst prepared from an organic compound or a polymer compound of formula (1) a tungstic acid compound, a phosphoric acid, hydrogen peroxide and a ...