一、参照软化点回配沥青沥青卷材生产,乳化沥青制造,沥青卷材防水施工用玛碲脂的配制及铺设道路用沥青的混配,均要根据胶结材料新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。一般是在高标号沥青中加入一定数量低标号沥青、粘性沥青或液体沥青。为此国家标准《屋面工程施工及验收规范》(GBJ First, refer to the softening point back to the bituminous bituminous coil production, emulsified bitumen production, the construction of the bituminous membrane waterproof construction and the laying of road asphalt, according to the newly required softening point to calculate the high The respective content of the softening point bitumen and the low softening point bitumen. Generally, a certain amount of low-grade asphalt, viscous asphalt, or liquid asphalt is added to high-grade asphalt. This national standard “Code for the construction and acceptance of roof projects” (GBJ