| dc.description.abstract | Purpose of this study is to explore the different natural bitumen and chemical modifiers, different amounts affect the effectiveness of the traditional asphalt, the use of basic laboratory tests can understand the different nature of the modifier and the different dosage under the modified results. To understand a variety of materials on a substrate modified bitumen modifier effect can have a better understanding, and so on existing domestic and foreign norms modified bitumen modified bitumen specifications for evaluation and discussion, to seek suitable for use in Taiwan modified asphalt, hopes that the future can provide various levels of domestic road works road use.
TLA and BRA as modifier for asphalt, if you want to use in Taiwan. In addition to cost, the important point is to use the basis that meet the domestic current specification. However, CNS 14184 is design for SBS that is very different with TLA and BRA. Based primarily on domestic modified bitumen penetration and viscosity grading, TLA hour with 20% penetration and viscosity equivalent to the domestic type Ⅱ modified asphalt; TLA add 30%, close to the modified asphalt mastic type Ⅲ. Add BRA10%, the equivalent of the modified type Ⅱ; adding 20% modified asphalt properties and type Ⅲ similar. When the modified asphalt type Ⅲ add TLA, the test proved to be effective, the most critical problem is that 135 ℃ when the viscosity is too high. SBR are polymer materials, modified physical properties of asphalt mastic modified bitumen generally similar domestic may follow the current domestic modified bitumen standard use. Add a proportion of 1% SBR, modified effect is not obvious; 2% to 3% of the equivalent type Ⅱ modified asphalt; 4% to 5% may be modified in line with domestic Ⅲ type specification; adding 6%, 135 ℃ viscous too high, not recommended. | en_US |