Sericite-modified bituminous concrete

A technology for modifying asphalt and concrete, applied in the field of road asphalt, can solve the problems of insufficient water stability and durability of warm mix asphalt concrete, and achieve the effects of good mechanical properties, good stability and strong UV resistance.

Active Publication Date: 2014-02-05
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water stability and durability of warm-mix asphalt concrete are far from sufficient, and diseases such as spalling and loosening emerge in endlessly

Method used

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  • Sericite-modified bituminous concrete
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  • Sericite-modified bituminous concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The present embodiment sericite modified asphalt concrete is made of the following raw materials in parts by weight: 100 parts of mineral material, 1 part of sericite powder, 4.9 parts of asphalt, 1.8 parts of coupling agent; the asphalt is SBS modified asphalt, the The particle size of the sericite powder is less than 0.075mm, the coupling agent is a silane coupling agent KH550, and the gradation type of the mineral material is GAC-13 (see Table 1 for the specific gradation composition).

[0031] Table 1 GAC-13 type gradation composition

[0032]

[0033] The preparation method of the present embodiment sericite modified asphalt concrete may further comprise the steps:

[0034] Step 1. Add the sericite powder into the coupling agent and stir evenly, then place it in a drying oven, and dry it for 3 hours at a temperature of 160°C to obtain a modified powder;

[0035] Step 2, the mineral powder in the mineral material and the modified powder described in step 1 are u...

Embodiment 2

[0038] The present embodiment sericite modified asphalt concrete is made of the following raw materials in parts by weight: 100 parts of mineral material, 0.5 part of sericite powder, 4 parts of asphalt, 0.1 part of coupling agent; the asphalt is SBR modified asphalt, the The particle size of the sericite powder is less than 0.075mm, the coupling agent is a silane coupling agent KH560, and the gradation type of the mineral material is AC-13 (see Table 2 for the specific gradation composition).

[0039] Table 2 AC-13 type gradation composition

[0040]

[0041] The preparation method of the present embodiment sericite modified asphalt concrete may further comprise the steps:

[0042] Step 1. Add the sericite powder into the coupling agent and stir evenly, then place it in a drying oven, and dry it for 2 hours at a temperature of 180°C to obtain a modified powder;

[0043] Step 2, uniformly mixing the mineral powder in the mineral material and the modified powder described i...

Embodiment 3

[0046] The present embodiment sericite modified asphalt concrete is made of the following raw materials in parts by weight: 100 parts of ore material, 1.5 parts of sericite powder, 6 parts of asphalt, 0.5 part of coupling agent; described asphalt is natural rubber modified asphalt, The particle size of the sericite powder is less than 0.075mm, the coupling agent is a titanate coupling agent TMC201, and the gradation type of the mineral material is AM-13 (see Table 3 for the specific gradation composition).

[0047] Table 3 AM-13 type gradation composition

[0048]

[0049] The preparation method of the present embodiment sericite modified asphalt concrete may further comprise the steps:

[0050]Step 1. Add the sericite powder into the coupling agent and stir evenly, then place it in a drying oven, and dry it for 3 hours at a temperature of 180°C to obtain a modified powder;

[0051] Step 2, uniformly mixing the mineral powder in the mineral material and the modified powder...

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Abstract

The invention provides sericite-modified bituminous concrete. The sericite-modified bituminous concrete is prepared from the following raw materials in parts by weight: 100 parts of mineral aggregate, 4-7 parts of asphalt, 0.5-2 parts of sericite powder, and 0.1-4 parts of coupling agent, wherein the coupling agent is a silane coupling agent, a titanate coupling agent or an aluminate coupling agent; the aggregate grading type of the mineral aggregate is GAC-13, AC-13, AM-13, SMA-13, OGFC-13 or superpave. The sericite-modified bituminous concrete provided by the invention is hot mixed asphaltic concrete; the emission of poisonous gases in the blending and paving processes of the bituminous concrete can be significantly reduced; emission of asphalt fume is greatly reduced; the sericite-modified bituminous concrete is non-toxic, free of corrosion, good in stability, wide in application and applicable to large-scale popularization; no secondary pollution is caused.

Description

technical field [0001] The invention belongs to the technical field of road asphalt, in particular to a sericite modified asphalt concrete. Background technique [0002] In May 2013, the State Council approved the "National Road Network Planning (2013-2030)" prepared by the National Development and Reform Commission and the Ministry of Transport. The national road network planning plan consists of two road network levels: ordinary national roads and national expressways. Composition, with a total scale of about 400,000 kilometers. In view of the advantages of asphalt pavement such as shock absorption, anti-skid, low noise, early opening to traffic, and easy repair, most roads will use asphalt pavement. However, asphalt concrete is a resource and energy-consuming industry. During the production and paving of asphalt concrete, a large amount of harmful gases will be generated, especially in poorly ventilated mountain roads and tunnels, which will seriously pollute the ecologi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCY02A30/30
Inventor 王朝辉刘志胜李彦伟王新岐狄升贯
Owner CHANGAN UNIV
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