沥青渗透等级为50/70意味着在标准测试中渗透值在50到70之间, 它是一种标准的渗透级沥青,通常用作铺路级沥青,适用于道路建设和生产性能优异的沥青路面。该等级的沥青主要用于基础和磨损层的热混合沥青的生产。

Bitumen 50/70 Specifications

No. Analysis Unit Limit Test Method
1 Density@25 ̊ C Kg/m³ 1010-1060 ASTM D70 or D3289
2 Penetration@25 ̊ C Mm/10 50-70 ASTM D5
3 Softening point ̊ C 46 Min. ASTM D36
4 Ductility@25 ̊ C Cm 100 Min. ASTM D113
5 Loss on heating Wt% 0.2 Max. ASTM D6
6 Drop in penetration after heating % 20 Max. ASTM D5 and D6
7 Flash point ̊ C 232 Min. ASTM D92
8 Solubility in Trichloroethylene Wt% 99.0 Min. ASTM D4
9 Spot test - Negative AASHOT102
10 Viscosity@60 ̊ C P 2000+400 ASTM D2171
11 Viscosity@135 ̊ C CST 300 Min. ASTM D2170

 

Usage: The main common usage of bitumen 50/70 is being used for road construction at mild regions.

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