Asphalt-mastic-broken stone mixture using steel slag as coarse aggregate and its application

A technology of asphalt mastic and mixture, which is applied to the application of the asphalt mastic gravel mixture, field of asphalt mastic gravel mixture

Inactive Publication Date: 2002-09-18
北京国道通公路设计研究院股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 3. From the perspective of environment, a large amount of steel slag accumulates and occupies a large area of ​​land. At the same time, steel slag dust pollution has become one of the main factors affecting the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] Specific embodiments of the present invention will be further described in detail below.

[0015] Shougang steel slag is used as the coarse aggregate in the SMA-16 asphalt mastic gravel mixture, and limestone is used as the fine aggregate and mineral powder. The main property indicators of Shougang steel slag are shown in Table 2. In comparison, Table 3 lists the main property indicators of Zhangjiakou basalt.

[0016] Sieve hole

(mm)

Gross volume density

(g / cm 3 )

water absorption

(%)

Soft rock content

(%)

needle flake content

(%)

crush value

(%)

los angeles wear

(%)

sturdiness

(%)

Adhesion

16

3.21

1.18

none

10.8

14.4

16

4.7

level 4

13.2

3.201

1.26

9.5

3.234

1.24

4.75

3.127

...

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PUM

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Abstract

An asphalt-mastic-broken stone mixture used for pavement of highway and street is prepared from steel slags, machined sand, powdered ore, lignofibres as stabilizer and asphalt as cementing agent through proportional mixing. Its advantages are high mechanical performance long service life and reducing environmental pollution.

Description

technical field [0001] The invention relates to an asphalt mastic macadam mixture, in particular to an asphalt mastic macadam mixture using steel slag as a coarse aggregate, and belongs to the technical field of asphalt mixture applied to highway pavement and steel slag recycling. The present invention also relates to the application of the asphalt mastic macadam mixture. Background technique [0002] Asphalt mixture (AC) is widely used in the surface layer of highway pavement in our country. In recent years, asphalt mastic macadam mixture (SMA) has been used in the surface layer of high-grade highways. Asphalt mastic macadam mixture is a kind of mixture formed by intercalating discontinuously graded coarse aggregates into a skeleton, and asphalt mastic formed by asphalt, fiber stabilizer, mineral powder and a small amount of fine aggregates to fill the skeleton gap The material belongs to a dense-skeleton structure. Due to its excellent anti-rutting, anti-skid performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075Y02W30/91C04B14/36C04B18/14C04B18/142C04B18/241
Inventor 杨丽英柳浩王建国李宝生完宇培郝文启
Owner 北京国道通公路设计研究院股份有限公司
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