Summary of Rubber Modified Asphalt Product Specifications around ...

g/cm 3 . It should not contain steel wires or other contaminants. The fiber should be less than
0.5%. About 4% of Calcium carbonate can be added to the CRM to prevent foaming when add it
to base binder.
供应商应提供橡胶粉质量保证书,说明橡胶粉规格、加工方式、加工的废旧轮胎类型
、橡胶粉的储存方式等。The CRM vendor should provide the certificate of compliance and
describe the gradation of CRM, manufacture method, type of waste tires, storage of CRM, etc.
表3 橡胶粉筛分规格
Table 3. Gradation requirement of CRM
筛孔尺寸 Sieve
Sizes(mm)
通过率 Percent Passing(%)
2.00 100
1.18 65~100
0.6 20~100
0.3 0~45
0.075 0~5
(3)橡胶沥青 Asphalt Rubber Cement
橡胶沥青应满足表4技术要求。橡胶沥青现场改性完成后应及时使用,如遇特殊情况需要现场存贮,橡
胶沥青不能超过两个加热循环,同时应在使用前对橡胶沥青质量进行检测,检测合格后才能使用。
Asphalt Rubber cement should meet the requirement shown in Table 4. The asphalt rubber
binder should be used after proper mixing and reaction time. If storage on site are necessary due
to special situation, asphalt rubber binder can be reheated. However, it shall not exceed two
heating cycles. At mean time, the asphalt rubber binder should be retested to meet the
specification before usage.
表4 橡胶沥青技术要求
Table 4. Technical requirement for asphalt rubber cement
检测项目 Test Parameters
技术指标 Technical
Requirement
粘度 Rotational Viscosity,177℃ ,Pa.S 1.5~4.0
针入度 Cone Penetration (25 o C,100g,5 s) 25
196