The way of preparing cationic emulsion asphalt from SBS, heavyasphalt, emulsifiers and stabilizers was studied.
研究了以阴离子型丁苯胶乳、重交沥青、乳化剂和稳定剂制备阳离子型改性乳化沥青的方法。
2
States around the country have also been allowing thousands of miles of asphalt roads to deteriorate back to gravel, even as skilled workers and heavy equipment stand idly by.
全国各州正任由数千英里的柏油公路恶化，露出碎石，就算熟练工人和重型设备已经准备就绪也无动于衷。
3
Purpose To develop heavy traffic road asphalt of stable quality.