Asphalt mixture for ultra-thin durable anti-skid wear layer for cement concrete bridge deck
A technology of cement concrete and asphalt mixture is applied in the field of asphalt mixture and asphalt mixture for ultra-thin durable anti-slip wear layer for cement concrete bridge deck, and achieves the effects of guaranteed possibility, simple preparation process and low cost
Active Publication Date: 2020-06-30
NANJING ROAD KEEPER TECH
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Problems solved by technology
[0005] Aiming at the technical problems existing in the prior art, this case provides an asphalt mixture for an ultra-thin durable anti-skid wear layer. After paving, the ultra-thin wear layer can not only solve the problems of anti-skid and wear resistance in preventive maintenance problems, and has good road performance, mechanical properties and long durability
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[0024] Pave an ultra-fine durable anti-skid wear layer with a thickness of 8-12mm on the original cement concrete bridge deck. Taking 100kg of aggregate as an example to pave the ultra-thin durable anti-skid wear layer, the raw materials and their weight ratios are as follows:
[0025] An asphalt mixture for an ultra-thin durable anti-skid wear layer, which includes the following materials in parts by weight:
[0026]
[0027] The aggregate consists of the following components by mass:
[0028] Extra fine sand 30~55wt%;
[0029] Mineral filler 45-80wt%.
[0030] Wherein, the particle size range of the ultra-fine sand is 1.18-2.36 mm, and the particle size range of the gravel aggregate is 2.36-4.75 mm. In this case, the grading of the aggregates has been greatly improved to make them reasonably and uniformly distributed. The intermittent grading method is adopted to make the aggregate particles arranged in a regular and orderly manner, so that the internal structure is uni...
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Abstract
The invention relates to an asphalt mixture for ultrathin durable antiskid wearing layers for cement concrete bridge floors. The asphalt mixture comprises, by weight, 100 parts of aggregate, 6-12 parts of butadiene-styrene rubber modified asphalt, 3-7 parts of acrylic copolymerization emulsion, 8-16 parts of urea resin, 1-3 parts of amine curing agent, 3-5 parts of composite stabilizer, 1-5 partsof dimethyl phthalate, 5-10 parts of ethyl acetate and 20-30 parts of water. The asphalt mixture is low in cost, simple in preparation process and extensive in source, can be widely used for paving road antiskid wearing layers, can effectively improve bridge floor surface functions and has excellent pavement performance and mechanical performance and high durability, and probability of the asphaltmixture to be used as a road structure layer is ensured.
Description
technical field [0001] The invention belongs to the field of road engineering and relates to an asphalt mixture, in particular to an asphalt mixture for an ultra-thin durable anti-skid wear layer for a cement concrete bridge deck. Background technique [0002] In recent years, with the increase of traffic volume and axle load in our country, and the weather conditions have become more and more harsh, the cement concrete bridge deck pavement in our country generally has serious early damage, which greatly affects the bridge deck pavement. The service life of the coating layer has caused huge economic losses. As a suspended structure, the bridge deck pavement is sensitive to changes in natural factors, and is more prone to early disease than the asphalt pavement of the subgrade section. A survey found that in the hot summer, the temperature of the steel bridge deck is 25°C to 35°C higher than the air temperature, and the possibility of rutting is higher than that of ordinary ...
Claims
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IPC IPC(8): C04B26/26C04B24/30C04B24/12
CPCC04B24/121C04B24/307C04B26/26C04B2111/0075C04B2201/10C04B14/06C04B14/14C04B14/28C04B24/2641C04B22/002C04B24/045C04B22/124C04B22/148C04B24/383C04B24/32
Inventor 周岚李小鹏倪庆汪平赵泽崔雯
Owner NANJING ROAD KEEPER TECH