Crumb rubber modified asphalt and prepration method thereof

A technology for modifying asphalt and waste rubber, which is used in building components, building insulation materials, buildings, etc., and can solve the problem of low stability of waste rubber powder modified asphalt.

Active Publication Date: 2011-07-13
JIANGSU BAOLI INT INVESTMENT CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] For the waste rubber powder modified asphalt prepared by the existing technology, the stability is not high (stratification occurs in storage), and there are special requirements for the fineness of the waste rubber powder. After extensive and in-depth research, the inventor proposes different The application date is October 24, 2003, the patent number is ZL200310104905.5, the announcement number is CN1313566C, the invention name is a waste rubber powder modified asphalt and its preparation method and the application date is October 29, 2004 Japan, the patent number is ZL200410050792.X, the announcement number is CN100340610C, the invention name is a kind of waste rubber powder modified asphalt composition and its preparation method invention patent, a waste rubber modified asphalt and its preparation method, the prepared The quality of waste rubber powder modified asphalt is stable without separation during storage and transportation, and the construction is convenient. item only)

Method used

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  • Crumb rubber modified asphalt and prepration method thereof
  • Crumb rubber modified asphalt and prepration method thereof
  • Crumb rubber modified asphalt and prepration method thereof

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Embodiment 1

[0030] As shown in the figure, a waste rubber modified asphalt includes: waste rubber powder, polystyrene particles, base asphalt, high-efficiency activation reaction agent, stabilizer, and its weight ratio is: waste rubber powder 20- 25 parts, 8-12 parts of polystyrene particles, 75-80 parts of base asphalt, 0.2-0.5 parts of high-efficiency activation reaction agent, and 0.5-0.7 parts of stabilizer.

[0031] Its preparation process is as follows:

[0032] A. The base asphalt is heated to 180-190°C in the raw material tank, and the measured 75-80 parts by weight of the high-temperature base asphalt is pumped to the heatable and heat-retaining reaction kettle, and the agitator on the reaction kettle is started to stir Base bitumen in the reactor;

[0033] B. Put the measured 20-25 parts by weight of waste tire rubber powder (20-40 mesh) and 8-12 parts by weight of polystyrene particles into the reactor in turn, keep stirring during the process of not adding materials, and stir...

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Abstract

The invention discloses a crumb rubber modified asphalt and a prepration method thereof, which aim at the deficiencies that the crumb rubber powder modified asphalt prepared by the prior art has low stability (appearing stratification phenomenon in storage) and special requirements on the fineness of crumb rubber powder. The proportioning by portions by weight of raw materials is as follows: 20-25portions of waste rubber powder, 8-12 portions of polystyrene particles, 75-80 portions of based asphalt, 0.2-0.5 portion of high-efficient active reactant and 0.5-0.7 portion of stabilizer. The preparation method is as follows: the crumb rubber powder, the polystyrene particles, the based asphalt, the high-efficient active reactant and the stabilizer with the certain proportioning are added in the based asphalt at 180-190 DEG C and treated by special devices such as stirring, strong shearing and the like, thereby preparing an asphalt product with stable performance, no separation, convenientconstruction, good high-temperature and low-temperature performances, good anti-stripping performance, no excessive requirements on the fineness of the crumb rubber powder (only 20-40 meshes), good stability and ability of being applicable to large-scale factory production.

Description

technical field [0001] The invention relates to a modified asphalt and a preparation method thereof, in particular to a waste rubber modified asphalt with good stability and excellent road performance and a preparation method thereof. Background technique [0002] With the rapid development of transportation and modern automobile industry, a large number of waste rubber tires have appeared. Waste tires are industrial hazardous solid wastes, which can deteriorate the natural environment, destroy vegetation growth, affect human health and living environment, and endanger the ecological environment of the earth. . my country is the third largest tire producer and consumer in the world. In 2007, 120 million waste tires were produced in my country, and the trend is increasing year by year. In the suburbs of large and medium-sized cities, we often see waste tires piled up like hills. The "black pollution" formed by more and more waste tires is threatening the ecological environme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L17/00C08L25/06C08J11/28C08J3/20C08K3/06C04B26/26
CPCY02W30/62
Inventor 汪红兵朱亚琴陶红
Owner JIANGSU BAOLI INT INVESTMENT CO LTD
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