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沥青卷材防水工程施工前,需先根据使用要求确定所需的沥青胶结材料(俗称玛(王帝)脂)的软化点。如用两种沥青配制(一般是用10号和60号沥青),就要根据胶结材料所需的软化点来计算高软化点沥青和低软化点沥青各自的含量。为此,国家标准《屋面工程施工及验收规范》(GBJ207-83)附录一中规定:在采用两种沥青配制胶结料时,可参照下列公式:
Before the construction of bitumen membrane waterproofing project, the softening point of bitumen cementing material (commonly known as Ma (king emperor) fat) required shall be determined according to the requirements of use. As with the two asphalt preparation (usually 10 and 60 bitumen), it is necessary according to the desired softening point of the cemented material to calculate the high softening point asphalt and low softening point of the respective content of asphalt. To this end, the national standard “Roof Construction and Acceptance Code” (GBJ207-83) Appendix I provides that: in the use of two kinds of asphalt preparation cementing materials, the following formula can be referred to: