High-wear-resistance anti-skid pavement aggregate, pavement and preparation method

A high wear-resistant, aggregate technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problem of undiscovered waste refractory materials, etc., to achieve environmental protection, high hardness and strength, alumina high content

Inactive Publication Date: 2020-09-29
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, no patent reports have been found on the use of waste refractory materials as anti-skid pavement aggregates

Method used

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  • High-wear-resistance anti-skid pavement aggregate, pavement and preparation method
  • High-wear-resistance anti-skid pavement aggregate, pavement and preparation method
  • High-wear-resistance anti-skid pavement aggregate, pavement and preparation method

Examples

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preparation example Construction

[0034] The preparation method of the high wear-resistant and anti-skid pavement aggregate of the present invention comprises using waste refractory materials as raw materials, sorting, crushing, sieving, soaking and strengthening treatment of the waste refractory materials, and specifically includes the following steps:

[0035] Step 1: Sorting the waste refractory materials and stacking them according to the different alumina content of the waste refractory materials. During the sorting process, remove the sticky slag layer, reaction layer and metamorphic layer of the waste refractory materials to obtain recyclable refractory materials;

[0036] Step 2: Use a crusher to crush the recyclable refractory materials that are stacked in batches to obtain the initial recycled aggregate; multi-stage crushing can control the content of aggregate needle flakes, and finally obtain 0-3mm, 3-5mm, 5-10mm , 10-20mm, 20-30mm regenerated refractory aggregates with different particle size distr...

Embodiment 1

[0041] This embodiment proposes a high wear-resistant and anti-skid pavement aggregate, road surface and preparation method. The high wear-resistant and anti-skid aggregate uses regenerated waste refractory aggregates as raw materials, and crushes, screens, soaks and strengthens waste refractory materials. obtained after processing.

[0042] The waste and old refractory materials in this embodiment include waste and old high-alumina refractory materials. The main phases of the waste and old high-alumina refractory materials are corundum, mullite and a small amount of quartz. The XRD results are shown in the attached figure 2 Shown, in mass percent, where Al 2 o 3 The content is 80%.

[0043] This embodiment also discloses a method for preparing high wear-resistant and anti-skid pavement aggregates, which specifically includes the following steps:

[0044] Step 1: Sorting the waste refractory materials and stacking them according to the different alumina content of the wast...

Embodiment 2

[0054] Same as Example 1, but different from Example 1, the waste refractories used in this example are waste silica bricks. The main phases in waste silica-molybricks are corundum, mullite, silicon carbide and a small amount of quartz. The XRD results are shown in the attached image 3 Shown, in mass percent, where Al 2 o 3 The content is 70%. The drying process is 110°C for 24h. The well-mixed aggregates are kept at 120°C for 18 hours for curing.

[0055] In this embodiment, the performance of the obtained high wear-resistant and anti-skid aggregate is tested. The prepared high wear-resistant and anti-skid aggregate has an aggregate polishing value of 55BPN; Los Angeles abrasion loss is 15.21%; aggregate crushing value is 12.01% ;Aggregate Vickers hardness is 1124.62HV 10

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Abstract

The invention discloses a high-wear-resistance anti-skid pavement aggregate, a pavement and a preparation method. The high-wear-resistance anti-skid pavement aggregate is obtained by taking a waste refractory material as a raw material and carrying out sorting, crushing, screening, soaking and strengthening treatment on the waste refractory material, and the waste refractory material comprises a waste high-alumina refractory material and a waste silicon mullite brick. Main phases in the waste high-alumina refractory material are corundum, mullite and quartz, wherein the mass percentage of Al2O3 is greater than or equal to 60%; main phases in the waste silicon mullite brick are corundum, mullite, silicon carbide and quartz, wherein the mass percentage of Al2O3 is greater than or equal to 55%. The waste is high in alumina content, high in hardness and strength and good in wear resistance, and compared with a process of treating the waste to prepare a refractory material, the process is simple and low in cost.

Description

technical field [0001] The invention belongs to the field of resource recycling and building materials, and in particular relates to a high wear-resistant and anti-skid pavement aggregate, a pavement and a preparation method. Background technique [0002] Road traffic safety has always been a difficult problem for countries all over the world, especially in areas with complex terrain, where poor road surface skid resistance is an important factor causing accidents. Ensuring that the road surface has sufficient skid resistance is the most effective way to reduce road traffic accidents. Therefore, it is timely and necessary to develop aggregates for high anti-skid and wear-resistant pavement materials. Pavement aggregates are usually made of natural raw materials such as basalt, limestone, and granite. With the implementation of environmental protection and resource comprehensive utilization policies, it has become an important task to find natural resource substitutes as aggr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/16C04B20/10C04B26/26C04B20/02C04B111/20
CPCC04B18/165C04B20/1051C04B26/26C04B2111/00362C04B2111/0075C04B2111/2038C04B20/026C04B20/02C04B20/0076Y02W30/91
Inventor 丁冬海种小川肖国庆
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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