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Warm mixed asphalt concrete additive and preparation method thereof
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A warm-mixed asphalt and concrete technology, applied in building insulation materials, building components, climate change adaptation, etc., can solve the problems of low comprehensive road performance, short service life of road surface, high investment, etc., to reduce investment cost and pavement maintenance Cost, solution to construction and environmental protection effects
Active Publication Date: 2015-02-04
XINJIANG COMM CONSTR GRP +1
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[0003] The technical problem to be solved by the present invention is that, aiming at the technical problems of traditional warm-mix asphalt concrete technology such as complex process, high investment, high energy consumption, high pollution, low comprehensive road performance, short service life of road surface and narrow application range, the present invention provides Additive for warm-mix asphalt concrete and preparation method thereof
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[0040] The present invention also specifically provides a preparation method for the above-mentioned warm-mix asphalt concrete additive, comprising:
[0041] In one mixing step, add warm mixing agent, polyethylenewax, hydroxypropyl methylcellulose, and calciumcarbonate to the horizontal color mixingmachine in the silo device, and stir evenly to make a semi-finished product;
[0042] The secondary mixing step is to put the semi-finished product into a horizontal color mixer, add rubber powder, and then uniformly stir, and then extrude and shape it with a twin-screw extruder to obtain a warm-mix asphalt concrete additive.
[0043] In the preparation method according to the present invention, the temperature of the first mixing step is room temperature, and the time is 5 to 10 minutes; the temperature of mixing in the second mixing step is room temperature, and the time is 25 to 30 minutes; Production temperature of extruder: 140℃~165℃.
[0049] Secondary mixing step, putting the semi-finished material into a horizontal color mixer, adding rubber powder and stirring evenly, and then using a twin-screw extruder to produce a warm-mix asphalt concrete additive; the temperature is room temperature, and the time is 25 to 30 minutes ;Twin-screw extruder production temperature: 140℃~165℃.
Embodiment 2
[0051] Put all the materials into the horizontal color mixingmachine at one time, stir at room temperature for 25-30 minutes, put the uniform semi-finished product into the silo of the twin-screw extruder and stir for 5-10 minutes to produce warm-mix asphalt concrete Additive, production temperature of twin-screw extruder: 140℃~165℃.
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Abstract
The invention relates to a warm mixed asphalt concrete additive and a preparation method thereof. The warm mixed asphalt concrete additive is prepared from the following materials in parts by weight of 10-25 parts of warm mixing agent, 25-35 parts of rubber powder, 5-10 parts of polyethylenewax, 5-10 parts of fiber, and 10-15 parts of calciumcarbonate. The warm mixed asphalt concrete additive provided by the invention not only solves the technical problems of complicated process, high investment, high pollution, high energy consumption, low synthesized pavement performance, short service life of pavement, narrow application range and the like in the traditional warm mixed asphalt concrete technology, but also solves the problems of construction and environmental protection under a low-temperature condition, reduction of investment cost and pavement maintenance cost and the like, and has high economic value and social benefit.
Description
technical field [0001] The invention relates to new technologies in the fields of transportation and water conservancy, and more specifically relates to a warm-mix asphalt concrete additive and a preparation method thereof. Background technique [0002] The development of warm-mix asphalt concrete technology began in Europe in 1995, and has been widely used in Europe and America. The application of my country's warm-mix asphalt concrete technology was introduced by the Highway Research Institute of the Ministry of Communications in 2005, and it is widely used in the construction of expressways, municipal roads and urban community roads. The production process of traditional warm-mix asphalt concrete technology is to first put base asphalt into the mixer of warm-mix asphalt equipment, and put materials such as warm-mix agent or viscosityreducer to increase the fluidity of asphalt and reduce the viscosity of asphalt to obtain warm-mix asphalt. Mixing asphalt, warm mixing asp...
Claims
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