Cement concrete pavement rapid repair material and mortar and preparation method of mortar

A technology for cement concrete and repair materials, which is applied in the field of mortar and preparation, and rapid repair materials for cement concrete pavement. It can solve the problems of brittle cement-based materials and poor repair effects, so as to solve the problems of brittle quality, quickly repair concrete, and reduce costs. Effect

Inactive Publication Date: 2020-05-15
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the prior art, the object of the present invention is to provide a cement concrete pavement rapid repair material, mortar and preparation method, and the present invention can prevent the poor repair effect caused by the unstable strength of sulphoaluminate cement in the later stage , it can also solve the brittle defect of cement-based materials, and it also has the characteristics of being able to quickly repair concrete, and the strength is stable in the later stage

Method used

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  • Cement concrete pavement rapid repair material and mortar and preparation method of mortar
  • Cement concrete pavement rapid repair material and mortar and preparation method of mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In this example, the components and proportions of the rapid repair mortar for cement concrete pavement are: Portland cement 518g, aluminate cement 112g, hemihydrate gypsum 70g, intermediate sand 1050g, SBR emulsion 62.22g, tap water 210.78g, Aqua 1.5g and defoamer 1.4g.

[0048] The above components were prepared into quick repair mortar, and then the mixture was poured into the mold for curing, and its various properties were tested.

[0049] The preparation process includes the following steps:

[0050] Step 1, add Portland cement, aluminate cement, hemihydrate gypsum and water reducer to the mixing tank to mix and stir evenly;

[0051] Step 2, then add water and polymer emulsion and stir evenly, and stir at 1000rpm for 30s;

[0052] Step 3, then add intermediate sand and stir for 2 minutes at 1000rpm;

[0053] Step 4, reduce the rotation speed to 600rpm, stir for 1 minute, add defoamer 20 seconds before the end of stirring, and stir evenly;

[0054] Step five, p...

Embodiment 2

[0056] In this example, the components and proportions of the rapid repair mortar for cement concrete pavement are: Portland cement 518g, aluminate cement 112g, hemihydrate gypsum 70g, intermediate sand 1050g, SBR emulsion 124.44g, tap water 176.56g, Aqua 1.5g and defoamer 1.4g. The medium-grade sand is the medium-grade sand that meets the requirements of the ISO standard.

[0057] The above components were prepared into quick repair mortar, and then the mixture was poured into the mold for curing, and its various properties were tested.

[0058] The preparation process includes the following steps:

[0059] Step 1, add Portland cement, aluminate cement, hemihydrate gypsum and water reducer to the mixing tank to mix and stir evenly;

[0060] Step 2, then add water and polymer emulsion and stir evenly, and stir at 1000rpm for 30s;

[0061] Step 3, then add intermediate sand and stir for 2 minutes at 1000rpm;

[0062] Step 4, reduce the rotation speed to 600rpm, stir for 1 m...

Embodiment 3

[0065] In this example, the components and proportions of the rapid repair mortar for cement concrete pavement are: Portland cement 518g, aluminate cement 112g, hemihydrate gypsum 70g, intermediate sand 1050g, SBR emulsion 186.67g, tap water 142.33g, Aqua 1.5g and defoamer 1.4g.

[0066] The above components were prepared into quick repair mortar, and then the mixture was poured into the mold for curing, and its various properties were tested.

[0067] The preparation process includes the following steps:

[0068] Step 1, add Portland cement, aluminate cement, hemihydrate gypsum and water reducer to the mixing tank to mix and stir evenly;

[0069] Step 2, then add water and polymer emulsion and stir evenly, and stir at 1000rpm for 30s;

[0070] Step 3, then add intermediate sand and stir for 2 minutes at 1000rpm;

[0071] Step 4, reduce the rotation speed to 600rpm, stir for 1 minute, add defoamer 20 seconds before the end of stirring, and stir evenly;

[0072] Step five, ...

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Abstract

The invention discloses a cement concrete pavement rapid repairing material and mortar and, a preparation method of the mortar, wherein the rapid repairing material comprises the raw materials in parts by mass: 50 to 70 parts of Portland cement, 10 to 20 parts of aluminate cement, 5 to 15 parts of semi-hydrated gypsum, 0.1 to 0.3 part of a defoaming agent, 0.1 to 0.3 part of a water reducing agentand 10 to 20 parts of a polymer emulsion. The rapid repairing mortar comprises the raw materials: intermediate sand, water and the cement concrete pavement rapid repairing material, wherein in partsby mass, the rapid repairing mortar comprises 120 to 140 parts of the intermediate sand, the mass ratio of water and the cement concrete pavement rapid repairing material is 0.3-0.4. The rapid repairing material can prevent poor repairing effect caused by unstable later strength of sulphoaluminate cement, can overcome the defect of brittleness of a cement-based material, also has the characteristic of quickly repairing concrete, and is stable in later strength.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to a cement concrete pavement rapid repair material, mortar and a preparation method. Background technique [0002] After large-scale highway construction, the mileage of my country's highways has basically met the needs of economic development. The main task of highway transportation development has transitioned from the era of road construction to the era of maintenance. Highway maintenance has become a "heavy and urgent" task for the development of highway transportation. . For example, the peak period of expressway construction in my country is concentrated in the first decade of the 21st century. Usually, the service life of highways is 15 years, and enters the intermediate repair period in 5-8 years, and enters the major repair period in 8-10 years. However, due to the rapid development of logistics, the heavy load of roads, high wear and tear, and the lack of strictness in con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/72
CPCC04B28/14C04B2201/50C04B2111/72C04B2111/0075C04B7/02C04B7/32C04B14/06C04B24/26C04B24/003C04B2103/302
Inventor 史琛邹希文
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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