Oil shale ash asphalt concrete for pavements in alpine regions and preparation method thereof

The invention provides oil shale ash asphalt concrete for pavements in alpine regions. The oil shale ash asphalt concrete is composed of asphalt and a mineral mixture in a mass ratio of 4.5: 100, themineral mixture is composed of 40% of broken stone, 8% of mineral powder and oil shale ash, 36% of st...

Full description

Saved in:
Bibliographic Details
Main Authors CHANG GUANGLI, QU GUANGLEI, WANG XIANLI
Format Patent
LanguageChinese
English
Published 30.06.2020
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
Online AccessGet full text

Cover

More Information
Summary:The invention provides oil shale ash asphalt concrete for pavements in alpine regions. The oil shale ash asphalt concrete is composed of asphalt and a mineral mixture in a mass ratio of 4.5: 100, themineral mixture is composed of 40% of broken stone, 8% of mineral powder and oil shale ash, 36% of stone chips and the balance sand. A preparation method is also provided, the method comprises the following steps: respectively preserving heat of asphalt, mineral powder and oil shale ash at the temperature of 135 DEG C and then mixing; shearing and stirring for 15 minutes at the speed of 500 r/min,shearing and stirring for 15 minutes at the speed of 1500 r/min, shearing and stirring for 10 minutes at the speed of 3000 r/min to obtain an asphalt mortar, and preserving heat at the temperature of135 DEG C; respectively washing and drying broken stones, stone chips and sand, carrying out heat preservation at 100-110 DEG C, mixing and stirring at 140 DEG C, adding the asphalt mortar, and stirring at 130-140 DEG C for 5
Bibliography:Application Number: CN202010179772