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它是一种沥青和标准渗透等级。这种类型是石油级沥青，是从原油的减压馏分油中提取的。沥青渗透等级30/40表示标准测试中的渗透值在30至40范围内。沥青渗透等级30/40是用作铺路级沥青的半硬渗透等级沥青，适用于道路建设和维修。该等级的沥青主要用于基础和耐磨层的热混合沥青的生产。沥青渗透等级30/40是最常用的沥青等级之一，它是所有其他沥青产品的基本材料。
Bitumen 30/40 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 | 30-40 | ASTM D5 |
| 3 | Softening point | ̊ C | 55-63 | 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 |
Usage: The main common usage of bitumen 30/40 is being used for paving and road construction the penetration grade bitumen has a thermoplastic property which causes the material to soften at high temperatures and to harden at low temperatures.
杰伊•基米亚沥青公司（Jey Kimia Bitumen Company）是伊朗各种沥青等级的最可靠的制造商和供应商之一，凭借20多年在国内外市场上生产和供应沥青的经验。
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