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Quick-setting, quick-hardening, super-early-strength and high-crack-resistance pavement patching material and preparation method thereof

A road repair and high crack resistance technology, which is applied in the field of building materials, can solve the problems of water resistance, unstable quality, and shrinkage of strength of the phosphate system, and achieve the effects of fast dissolution rate, prolonging the setting time, and improving crack resistance

Inactive Publication Date: 2020-08-25
河北智晖建筑安装工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminate cement has problems of strength shrinkage and high price in the late stage of crystal transformation; phosphate system has problems of water resistance and obvious color difference with existing cement concrete; sulphoaluminate cement system has unstable quality and large drying shrinkage The problem

Method used

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  • Quick-setting, quick-hardening, super-early-strength and high-crack-resistance pavement patching material and preparation method thereof
  • Quick-setting, quick-hardening, super-early-strength and high-crack-resistance pavement patching material and preparation method thereof
  • Quick-setting, quick-hardening, super-early-strength and high-crack-resistance pavement patching material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: a kind of fast-setting rapid-hardening ultra-early-strength high-crack-resistant pavement patching material, in parts by weight, comprises the following components:

[0027] 18 parts of 72.5 sulfoaluminate cement, 15 parts of 52.5 Portland cement, 3 parts of 200 mesh anhydrite powder, 1.5 parts of primary fly ash, 1.5 parts of silica fume, 39 parts of sand, inorganic retarding component A ( 200 mesh β hemihydrate gypsum) 3 parts, 0.36 parts of organic retarding component B (including 0.1 part of tartaric acid, 0.06 part of boric acid, 0.1 part of citric acid, 0.1 part of sodium gluconate), 0.02 part of lithium carbonate powder, naphthalene-based water reducing 0.2 parts of antifoaming agent, 0.02 parts of polyether defoamer, 0.4 parts of ethylene-vinyl acetate polymer, and 18 parts of water;

[0028] The above repair material is prepared by the following method:

[0029] S1: Weigh each component according to the above parts by mass;

[0030] S2: put the ...

Embodiment 2

[0034] A fast-setting, rapid-hardening, super-early-strength and high-crack-resistant pavement patching material, comprising the following components in parts by weight:

[0035] 18 parts of 72.5 sulfoaluminate cement, 15 parts of 52.5 Portland cement, 4 parts of 200 mesh anhydrite powder, 1.5 parts of primary fly ash, 1.5 parts of silica fume, 38.2 parts of sand, inorganic retarding component A ( 200 mesh β hemihydrate gypsum) 3 parts, organic retarding component B 0.16 parts (including 0.1 part tartaric acid, 0.06 parts boric acid), 0.02 parts lithium carbonate powder, 0.2 parts naphthalene-based water reducer, 0.02 parts polyether defoamer 0.4 parts of ethylene-vinyl acetate polymer, 18 parts of water.

[0036] The preparation method is the same as that described in Example 1.

Embodiment 3

[0038] A fast-setting, rapid-hardening, super-early-strength and high-crack-resistant pavement patching material, comprising the following components in parts by weight:

[0039] 18 parts of 72.5 sulfoaluminate cement, 15 parts of 52.5 Portland cement, 3 parts of 200 mesh anhydrite powder, 1.5 parts of primary fly ash, 1.5 parts of silica fume, 37.86 parts of sand, inorganic retarding component A ( 200 mesh β hemihydrate gypsum) 4 parts, organic retarding component B 0.5 parts (including 0.15 parts of tartaric acid, 0.08 parts of boric acid, 0.15 parts of citric acid, 0.12 parts of sodium gluconate), 0.02 parts of lithium carbonate powder, naphthalene-based water reducing 0.2 parts of antifoaming agent, 0.02 parts of polyether defoamer, 0.4 parts of ethylene-vinyl acetate polymer, and 18 parts of water.

[0040] The preparation method is the same as that described in Example 1.

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Abstract

The invention relates to a quick-setting, quick-hardening, super-early-strength and high-crack-resistance pavement patching material and a preparation method thereof. In weight parts, the material ismainly prepared from the following raw materials: 16-20 parts of sulphoaluminate cement, 13-17 parts of Portland cement, 3-4 parts of a coagulation accelerator, 1-2 parts of fly ash, 1 to 2 parts of silica fume, 37 to 42 parts of graded river sand, 3.1 to 4.5 parts of a composite retarder, 0.01 to 0.02 part of an early strength agent, 0.2 to 0.3 part of a water reducing agent, 0.02 to 0.03 part ofan antifoaming agent, 0.3 to 0.5 part of a polymer adhesive and 17 to 19 parts of water, the total parts being 100 parts. The initial setting time of the material provided by the invention is 15-35 minutes, and the time requirements of different repair construction working conditions can be met; the early strength is high, the 3h breaking strength can reach 6.0 MPa or above at most, the strengthrequirement of rapid construction can be met, and the later strength is continuously increased; the material has remarkably improved toughness and compactness, the crack resistance of the material isremarkably enhanced, and the later maintenance cost is reduced. The problems that in the prior art, a repairing material is too fast in setting and hardening, low in strength and prone to cracking aresolved, and the material is suitable for emergency repairing of road engineering.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a fast-setting, rapid-hardening, super-early-strength, high-cracking-resistance pavement repair material for rapid repair of cement concrete pavement and a preparation method thereof. Background technique [0002] Cement concrete is widely used in the field of transportation due to its advantages of high rigidity, strong bearing capacity, convenient construction and low cost. However, during use, due to the erosion of the external environment and the continuous effect of external loads, especially in bridge expansion joints and high-speed toll island areas, cement concrete materials usually appear damaged shortly after use, which seriously affects driving safety. In order to ensure the driving safety and quality of the pavement, it is necessary to repair the damaged cement concrete pavement, so as to restore the structural performance and service performance of the pavement. ...

Claims

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Application Information

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IPC IPC(8): C04B28/16C04B24/06C04B103/22C04B111/72C04B111/34
CPCC04B28/16C04B40/0039C04B2111/72C04B2111/0075C04B2111/343C04B2201/05C04B2103/22C04B7/323C04B7/02C04B18/08C04B18/146C04B14/068C04B22/10C04B24/32C04B24/2623C04B22/143C04B24/06C04B22/0013
Inventor 王秀霞郑雪梅王晓曼
Owner 河北智晖建筑安装工程有限公司
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