黑龙江富拉尔基王士棺同志,您来信询问石油沥青与煤焦沥青能否混用的问题,经公路科学研究院曾士遇同志解答如下: 石油沥青与煤沥青虽是两个不同系统的烃化合物所组成的胶体物资,但为改善其性质,各国在研究和利用上均说明可互相掺用。唯掺用数量以不影响该种沥青胶体稳定性为原则(一般在20 Comrade Fula’erji Wang Shih coffin of Heilongjiang Province, you asked for a question about whether petroleum asphalt can be mixed with coal tar pitch. The answer given by Zeng Shi Yu of Highway Research Institute is as follows: Petroleum asphalt and coal tar pitch are two different hydrocarbon systems Compounds made of colloidal materials, but in order to improve its properties, all countries in the study and utilization of both can be mixed with each other. The only mixed with the amount of do not affect the stability of the asphalt gel as the principle (usually 20