Study on High and Low Temperature Performance of Mineral Powder Modified Rubber Asphalt Mortar

With the increase of coal mining in China, a large amount waste gangue is produced. How to reuse an important research direction. The results showed that improvement base asphalt mortar by powder could improve performance matrix asphalt, however, search rubber modified rarely reported. High and low-temperature critical mortar. So limestone (LPMBAM), (LPMRAM), (CGPMRAM) are prepared, high analyzed cone penetration tests bending beam rheological (BBR). show decreases with filler-asphalt ratio decrease temperature. shear strength stiffness modulus rise At same temperature, order CGPMRAM < LPMRAM LPMBAM, > so high-temperature better than LPMRAM, much LPMBAM LPMBAM. By double linear model, optimum determined be 0.44~0.46 for 0.42~0.43 CGPMRAM. Microscopic surface rougher powder. content active oxides such as SiO2 Al2O3 about 7.8 times These physical chemical properties make able adsorb while slightly worsening but still