Product Detail
1、 The significance of PG grading
PG grading simulates the aging conditions of asphalt at different stages, and evaluates asphalt at different aging stages from four aspects. It comprehensively considers the high temperature, medium temperature, low temperature, aging performance and construction characteristics of asphalt, and links the characteristics and indicators of asphalt materials with environmental conditions and road performance. By controlling road rutting, fatigue cracking, and low-temperature shrinkage cracking, road surface performance can be improved.
2、 Product indicators
PG58-28 Modified Asphalt Index
| Unaged asphalt | ||
|
Dynamic shear,T315CG*/sinδd,@10rad/s, 58 ℃ |
＞1.00kPa |
|
| After RTFO aging | ||
|
Dynamic shear,T315CG*/sinδd,@10rad/s, 58 ℃ |
＞2.20kPa |
|
| After PAV aging | ||
|
Dynamic shear,T315CG*/sinδd，@10rad/s, 25 ℃ |
＜5MPa |
|
|
Creep striffness,T313 g-18 ℃ |
60秒(miǎo)時(shí).S |
At 60 seconds m-value |
|
≤300MPa |
≥0.300 |
|
|
Evaluation results According to the technical indicators in the attached table - ASHTO.M320-10, the test results meet the indicator requirements of PG58-28 asphalt. |
||
PG64-34 Modified Asphalt Index
| Unaged asphalt | ||
|
Dynamic shear,T315CG*/sinδd,@10rad/s, 64 ℃ |
＞1.00kPa |
|
| After RTFO aging | ||
|
Dynamic shear,T315CG*/sinδd,@10rad/s, 64 ℃ |
＞2.20kPa |
|
| After PAV aging | ||
|
Dynamic shear,T315CG*/sinδd,@10rad/s, 25 ℃ |
＜5MPa |
|
|
Creep striffness,T313 g-24 ℃ |
At 60 seconds. S | At 60 seconds m-value |
|
≤300MPa |
≥0.300 |
|
|
Evaluation results: According to the technical indicators in the attached table - ASHTO.M320-10, the test results meet the requirements of PG64-34 asphalt indicators. |
||
3、 The company's existing PG graded modified asphalt products:
58-28、64-34、64-40、70-28、70-22
Keywords：
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Environmentally friendly high viscosity composite modified rubber asphalt
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