Compound multifunctional asphalt pavement sealant and preparation process thereof
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A technology for asphalt pavement and potting glue, which is applied in the direction of asphalt material adhesives, adhesives, and other rubber adhesives. It can solve the problems of high temperature stability and low temperature flexibility, and achieve excellent performance and interface adhesion. And the effect of excellent durability and good bond strength
Active Publication Date: 2018-11-30
CHONGQING JIAOTONG UNIVERSITY
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is the problem of low high temperature stability and low temperature flexibility. Specifically, a compound multifunctional asphalt pavement potting compound and its preparation process are provided. The compound multifunctional asphalt pavement in the present invention Potting compound has good high temperature stability and low temperature flexibility
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Embodiment 1
[0035] Configuration of functional group preparation A: weigh the corresponding components according to the following composition ratio configuration,
[0036]
[0037] Stir at a temperature of 80-100°C for 52 minutes, vacuum dehydrate for 1.8 hours, and package for later use;
[0038] Configuration of functional group agent B: Weigh 18 parts of diphenylmethane diisocyanate, 8 parts of epoxy butyl stearate, and 5 parts of trimethylolethane, stir for 45 minutes at a temperature of 110°C, and vacuum dehydrate for 2.5 h, add 4 parts of bisphen-A epoxy compatibilizer, stir at the same temperature for 45 minutes, vacuum dehydrate for 0.75 hours, and package for later use;
[0039] Configuration of functional group agent C: Weigh 10 parts of microcapsules, 8 parts of vinyl glass flake cement, and 3 parts of polyvinyl alcohol-modified high-sodium bentonite particles, stir at room temperature for 35-60 minutes, vacuum dehydrate for 0.5-1 hour, and package spare;
[0040] The conf...
Embodiment 2
[0056] Embodiment 2: the repair of temperature crack
[0057] Using the potting glue prepared in Example 1, base asphalt, and conventional equivalent rubber modified joint glue to seal and fill the temperature cracks respectively, the performance index test of the road surface at the sealed and filled place after sealing and filling is shown in Table 3.
[0058]
[0059] Table 3 The performance comparison between the present invention and base asphalt and conventional grouting glue
Embodiment 3
[0060] Embodiment 3: Repair of pavement load cracks
[0061] The potting glue prepared in Example 1, matrix asphalt, and conventional equivalent rubber-modified asphalt joint glue were used to seal and fill the cracks under load on the pavement respectively.
[0062]
[0063]
[0064] Table 4 The performance comparison between the present invention and base asphalt and conventional grouting glue
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Abstract
The invention discloses a compound multifunctional asphalt pavement sealant and a preparation process thereof. The main components of the sealant include: 100 parts of mixed modifier-modified asphaltwith 35 percent of 40-mesh rubber powder, 45 percent of 60-mesh rubber powder and 20 percent of 80-mesh rubber powder; 15 to 30 parts of functional component agent A; 10 to 35 parts of functional component agent B; and 5 to 25 parts of functional component agent C. The main components of the functional component agent A are coumarone-indene resin, trimethylolpropane, fine talcum powder, p-aminobenzoic acid and the like. The main components of the functional component agent B are diphenylmethane diisocyanate, butyl epoxy stearate, bisphenol-A epoxy compatibilizer, trimethylolethane and the like. The main components of the functional component agent C are microcapsules, vinyl glass flake mortar, polyvinyl alcohol-modified high-sodium bentonite particles and the like. According to the invention, after the functional component agents A, B and C are prepared, proportion is designed to carry out compounding, and the compounded sealant not only can fill cracks, but also can seal the cracks. The invention is applicable to different types of cracks, and according to causes of crack formation, different amounts of functional component agents A, B and C can be added. The sealant compounded bythe invention has high bonding strength, good sealing property and waterproofness and excellent high-temperature stability and low-temperature bonding property, having high application and popularization values.
Description
technical field [0001] The invention belongs to a pavement crack repairing material and belongs to the field of highway maintenance, in particular to a composite multifunctional asphalt pavement potting glue and a preparation process thereof. Background technique [0002] Due to its excellent road performance, asphalt pavement is widely used in national and provincial arterial roads, expressways, municipal roads, etc. However, almost all pavements will have cracks under the action of various factors (this is a common pavement disease phenomenon). The emergence of cracks will not only affect the safety and comfort of driving, but also cause rainwater on the road to flow into the base layer, deteriorating the strength and stability of the base layer and roadbed, resulting in more serious diseases on the road surface, affecting the travel of vehicles, and greatly shorten the service life of the pavement. Pavement maintenance is the central link of the entire road maintenance ...
Claims
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Application Information
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