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Epoxy asphalt steel slag concrete ultrathin wearing course and preparation method thereof

A technology of steel slag concrete and epoxy asphalt, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of hindering the development of steel slag solid waste recycling, large pore ratio of steel slag, and high water absorption. Achieve the effect of meeting the requirements of anti-rutting, high tensile strength and improved skid resistance

Active Publication Date: 2022-08-02
黄卫 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, steel slag has a large void ratio, high water absorption rate, and contains f-CaO, which will expand after reacting with water, so it is generally only used for the upper or lower layer of low-grade asphalt pavement, and is not suitable for paving high-grade asphalt pavement. The ultra-thin wear layer of the grade pavement hinders the development of the reuse level of steel slag solid waste in the transportation field, causing certain economic losses

Method used

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  • Epoxy asphalt steel slag concrete ultrathin wearing course and preparation method thereof
  • Epoxy asphalt steel slag concrete ultrathin wearing course and preparation method thereof
  • Epoxy asphalt steel slag concrete ultrathin wearing course and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] 100 aggregates. The fine aggregate is limestone with a specification of 0-3mm, totaling 30 parts; the coarse aggregate is modified waterproof steel slag and basalt, with a specification of 5-10mm, totaling 68 parts, of which the modified waterproof steel slag is 40.8 parts and the basalt is 27.2 parts. parts; mineral powder specification is 0-0.6mm, a total of 2 parts. The test results of various properties in the aggregate are shown in Table 1-Table 4.

[0045] Table 1 Test results of steel slag and basalt coarse aggregate

[0046]

[0047]

[0048] Table 2 Chemical composition of steel slag aggregates

[0049] Element CaO SiO2 Al2O3 MnO MgO FeO other Mass ratio % 48.56 13.28 8.53 4.35 8.93 13.35 3

[0050] Table 3 Limestone fine aggregate experimental results

[0051] Test items unit standard requirement test results apparent relative density -- ≥2.5 2.658 sturdiness ％ ≤12 (more than 0.3m...

Embodiment 2

[0077] 100 aggregates. The fine aggregate is limestone with a specification of 0-3mm, totaling 26 parts; the coarse aggregate is modified waterproof steel slag and basalt, with a specification of 5-10mm, totaling 72 parts, of which the modified waterproof steel slag is 43.2 parts and basalt is 28.8 parts parts; mineral powder specification is 0-0.6mm, 2 parts. The quality components and various properties of aggregate, silicone waterproofing agent, ethylene terephthalate fiber, and epoxy asphalt are the same as those in Example 1.

[0078] See Table 10 for mineral gradation:

[0079] Table 10 embodiment 2 mineral material gradation table

[0080] Sieve hole(mm) 13.2 9.5 6.3 4.75 2.36 1.18 0.6 0.3 0.15 0.075 Passing rate(%) 100 89.3 36.0 29.8 25.0 16.5 12.1 9.6 6.8 5.4

[0081] The preparation method of the epoxy asphalt steel slag concrete ultra-thin wear layer of the present embodiment is the same as that in Example 1, and the prepare...

Embodiment 3

[0085] 100 aggregates. The fine aggregate is limestone with a specification of 0-3mm, totaling 21 parts; the coarse aggregate is modified waterproof steel slag and basalt, with a specification of 5-10mm, totaling 76 parts, of which the modified waterproof steel slag is 45.6 parts and the basalt is 30.4 parts parts; mineral powder specification is 0-0.6mm, a total of 3 parts. The quality components and various properties of aggregate, silicone waterproofing agent, ethylene terephthalate fiber, and epoxy asphalt are the same as those in Example 1.

[0086] See Table 12 for ore grades:

[0087] Table 12 Example 3 mineral material gradation table

[0088] Sieve hole(mm) 13.2 9.5 6.3 4.75 2.36 1.18 0.6 0.3 0.15 0.075 Passing rate(%) 100 88.7 32.4 25.8 21.3 14.6 11.3 9.2 6.7 5.3

[0089] The preparation method of the epoxy asphalt steel slag concrete ultra-thin wear layer of the present embodiment is the same as that in Example 1, and the pr...

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Abstract

The invention discloses an epoxy asphalt steel slag concrete ultrathin wearing course and a preparation method thereof. The epoxy asphalt steel slag concrete ultrathin wearing course consists of 93.9 to 96.9 percent of aggregate, 2.9 to 5.65 percent of epoxy asphalt and 0.2 to 0.5 percent of polyester fiber, wherein the aggregate comprises 68-76% of coarse aggregate, 21-30% of fine aggregate and 2-3% of mineral powder; the coarse aggregate comprises 55-65% of modified waterproof steel slag and 35-45% of basalt; the fine aggregate is limestone; the mineral powder is obtained by grinding limestone; the modified waterproof steel slag is obtained by modifying alkaline steel slag with an organic silicon waterproof agent; the polyester fibers are polyethylene terephthalate fibers; the epoxy asphalt is prepared from epoxy resin, a curing agent and matrix asphalt.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and particularly relates to an epoxy asphalt steel slag concrete ultra-thin wear layer and a preparation method thereof. Background technique [0002] In recent years, my country's transportation sector has developed rapidly, the domestic traffic volume has increased substantially, the road grade has generally been improved, and the requirements for highway construction have become more stringent. As a new type of pavement maintenance technology, the ultra-thin wear layer of asphalt pavement can be used not only for the maintenance of high-grade asphalt pavement, but also for the anti-slip layer of new pavement. It is more and more widely used in road and bridge pavement. The coarse aggregate in the traditional ultra-thin wear layer is the crushed stone with hard texture, rough surface, low expansion rate, and shape close to a cube. It is generally a basic or strong basic natural stone s...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B18/14C04B16/06
CPCC04B26/26C04B18/142C04B16/0683C04B2111/00017C04B2111/0075C04B2201/20C04B2201/50C04B14/14C04B14/28Y02W30/91
Inventor 黄卫王新明罗桑张之涵
Owner 黄卫
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