渗透级沥青|坦桑尼亚标准|TZS 1939: 2017
TZS 1939: 2017
Civil engineering specifications — Penetration grade bitumen
Applies to bituminous materials and covers the requirements for four (4) penetration grades of bitumen suitable for road construction and similar purposes.
土木工程规范—渗透级沥青
适用于沥青材料,涵盖适用于道路建设和类似目的的四(4)渗透等级的沥青的要求。