A kind of modified asphalt mixture and its preparation method
A technology of modified asphalt and mixture, which is applied in the field of road engineering, and can solve the problems of high temperature of mixture mixing, discharging, and compaction, and achieve the effects of lower heating temperature, improved performance, and less energy consumption
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Embodiment 1
[0021] Preparation of admixtures:
[0022] Raw material and quality of external admixture: 600.0g (60%) of water, 150.0g (15%) of octadecyl dimethyl ammonium bromide, 100.0g (10%) of calcium chloride, SBS (styrene-butylene ethylene-styrene block copolymer) latex 150.0g (15%); the solid content of SBS latex is 35-50%; the water is heated to 50 ℃ ~ 80 ℃, add octadecyl dimethyl ammonium bromide Dissolve, then add calcium chloride and SBS latex, grind to form a mixed solution through a colloid mill, cool for later use.
[0023] Preparation of modified asphalt mixture:
[0024] Raw materials and quality of modified asphalt mixture: aggregate 1126.8g (92%), ordinary asphalt 49.0g (4%), external admixture 36.7g (3%), mineral powder 12.2g (1%); The material is the stone that meets the technical requirements of "Technical Specifications for Construction of Highway Asphalt Pavement" (JTGF40-2004), the ordinary asphalt is heavy traffic petroleum asphalt, and the mineral powder is the m...
Embodiment 2
[0033] Preparation of admixtures:
[0034] Raw materials and quality of external additives: 600.0g (60%) of water, 150.0g (15%) of octadecyldimethylammonium bromide, 100.0g (10%) of calcium chloride, SBR (butadiene-benzene Ethylene copolymer) latex 150.0g (15%). The solid content of SBR latex is 35-50%; the water is heated to 60°C, octadecyl dimethyl ammonium bromide is added to dissolve, then calcium chloride and SBS latex are added, and a mixed solution is formed after colloid mill grinding. Let cool and set aside.
[0035] Preparation of modified asphalt mixture:
[0036] Raw materials and quality of modified asphalt mixture: aggregate 1123.5g (92%), ordinary asphalt 51.3g (4.2%), external admixture 24.4g (2%), mineral powder 22.0g (1.8%); The material is the stone that meets the technical requirements of "Technical Specifications for Construction of Highway Asphalt Pavement" (JTGF40-2004), the ordinary asphalt is heavy traffic petroleum asphalt, and the mineral powder i...
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