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Steel scoria mastic detritus asphaltum concrete and method for preparing the same

A technology of asphalt concrete and tellurium, which is applied in the fields of manufacturing tools, sustainable waste treatment, solid waste management, etc., can solve problems such as the lack of high-quality aggregate supply, improve long-term road performance, reduce construction costs, and alleviate supply shortages Effect

Inactive Publication Date: 2005-07-06
武汉钢铁集团冶金渣有限责任公司 +1
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Problems solved by technology

[0007] In order to improve the long-term road performance of asphalt concrete and alleviate the shortage of high-quality aggregate supply, the object of the present invention is to develop a steel slag macadamic asphalt concrete (referred to as steel slag SMA asphalt) by selecting steel slag as road engineering aggregate. Concrete) and its preparation method

Method used

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  • Steel scoria mastic detritus asphaltum concrete and method for preparing the same
  • Steel scoria mastic detritus asphaltum concrete and method for preparing the same
  • Steel scoria mastic detritus asphaltum concrete and method for preparing the same

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Embodiment 1

[0031] Steel slag SMA asphalt pavement test. The total length of the test section is 230 meters, and the designed paving width is 6.50 meters. It is divided into middle and upper surface layers. Among them, the upper layer adopts the SMA-13 ​​asphalt mixture proportion.

[0032] Raw materials for SMA-13 ​​asphalt mixture:

[0033] 1. Aggregate: steel slag

[0034] 2. Asphalt: SBS modified asphalt

[0035] 3. Mineral powder: hydrophilic coefficient 0.9

[0036] 4. Fiber stabilizer: Haichuan Dolanit polyester fiber

[0037] Not SMA-13 ​​steel slag asphalt concrete:

[0038] 1. Synthetic grading

[0039] Table 1 Synthesis gradation of SMA-13 ​​steel slag asphalt mixture

[0040] Aperture(mm)

[0041] 16 13.2 9.5 4.75 2.36 1.18 0.6 0.3 0.15 0.075

[0042] synthetic grading

[0043] 100 95.7 63.3 28.0 20.1 17.0 14.4 12.9 12.1 10.9

[0044] (%)

[0045] The best asphalt dosage of SMA-13 ​​steel slag asphalt mixture is 6.2%; the mineral powder dosage is 11%....

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Abstract

Steel slag as aggregate for road engineering has not only excellent pressure resisting and wear resisting performance but also high adhesion. The asphalt concrete consists of steel slag as aggregate, mineral powder stuffing, fiber as stabilizer and asphalt as adhesive. The production process includes heating the aggregate to 170 deg.c and mixing with hot molten liquid asphalt, mixing with mineral powder, adding fiber as stabilizer, and beating the steel slag SIA asphalt mixture on two sides for 50 times each or rolling for 18 times to form. The steel slag SIA asphalt concrete has its performance indexes reaching national standard, dynamic stability up to 5846 times / mm and may be used in expressway. In addition, the use of steel slag can lower engineering cost and reduce environmental pollution.

Description

technical field [0001] The invention relates to a steel slag macadamized stone asphalt concrete and a preparation method thereof. Background technique [0002] Asphalt mastic macadam mixture (referred to as SMA) is a kind of asphalt mastic which is composed of asphalt, a small amount of fine aggregate, fiber stabilizer and mineral powder to fill the skeleton gap of discontinuously graded coarse aggregate. Asphalt. At present, this type of pavement structure can be widely used in the engineering field, mainly due to the excellent performance of SMA in terms of permanent deformation resistance, crack resistance and durability. It can be said that SMA solves the contradictions between high-temperature anti-rutting performance and low-temperature crack resistance, anti-skid performance and pavement durability that commonly exist in road construction in my country. [0003] The coarse aggregate used for SMA should be broken aggregate with hard texture, rough surface, close to c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B3/00C04B14/46C04B16/02C04B16/06C04B18/14C04B26/26
CPCY02W30/91
Inventor 吴少鹏万喜老林振华王宏薛永杰陈向明杨文锋汪晖
Owner 武汉钢铁集团冶金渣有限责任公司
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