[陈鹤涛问]我们参考了去年第5期[铸工]和苏联资料的介绍,正在试制KT粘结剂,由於我国目前还没有坭煤塔脂,曾用4号石油沥青来代替,但所做出试样的干拉强度始终没达到苏联标准(9公斤/公分~2以上),不知石油沥青是否能代替坭煤沥青?同时 按照苏联配制成分配制时,稀释极为困难。 [Chen He Tao asked] We refer to last year, No. 5 [Castor] and the introduction of the Soviet Union, is trial production of KT binder, because there is no coal tar in our country, was No. 4 asphalt instead, but made The dry tensile strength of the sample has not yet reached the Soviet Union standard (9 kg / cm ~ 2 above), I do not know whether petroleum bitumen can replace coal bitumen? While preparing according to the Soviet Union ingredients, the dilution is extremely difficult.