Stable rubber asphalt base sample, composite modified asphalt as well as preparation method and application of composite modified asphalt
The invention provides a stable rubber asphalt base sample, composite modified asphalt as well as a preparation method and application thereof. The stable rubber asphalt base sample comprises the following components in parts by weight: 70-85 parts of heavy traffic matrix asphalt and 15-30 parts of...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention provides a stable rubber asphalt base sample, composite modified asphalt as well as a preparation method and application thereof. The stable rubber asphalt base sample comprises the following components in parts by weight: 70-85 parts of heavy traffic matrix asphalt and 15-30 parts of rubber powder. The composite modified asphalt is prepared from the following raw materials in percentage by mass: 40-70% of the stable rubber asphalt base sample, 1-10% of an SBS modifier, 1-3% of natural asphalt, 5-10% of a dissolution promoter, 3-6% of a reinforcing agent, 0.1-0.5% of a stabilizer and the balance of heavy traffic matrix asphalt. The problem of storage stability of traditional rubber modified asphalt is solved, the relationship between high viscosity and high elasticity indexes is balanced by utilizing an optimal material ratio and a preparation method, and the composite modified asphalt provided by the invention remarkably improves the rutting resistance, water stability, low-temperature crack re |
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