A sprayable early-strength ultra-high toughness mortar concrete system and its preparation method

A technology of mortar concrete with ultra-high toughness, which is applied in the field of fiber-reinforced mortar concrete. It can solve the problems that the repaired objects cannot be deformed cooperatively, the bond strength of the matrix is ​​not high, and it is difficult to spray construction, etc., so as to improve product competitiveness, high construction efficiency, and The effect of rapid development of strength

Active Publication Date: 2022-02-11
JIANGSU SOBUTE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the problems of the existing ultra-high toughness concrete, such as difficulty in spraying construction, low early strength, inability to coordinate deformation with the repaired object, and low bond strength with the matrix, the present invention provides a super early strength, high strength, shrinkage and deformation synergy, Sprayable ultra-high toughness mortar concrete with strong interfacial bonding and high cost performance

Method used

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  • A sprayable early-strength ultra-high toughness mortar concrete system and its preparation method
  • A sprayable early-strength ultra-high toughness mortar concrete system and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A kind of mortar concrete of the present invention, its proportioning is as follows:

[0055] Sulphoaluminate cement: 45%

[0056] Aggregate: 30%

[0057] Spherical Active Hydrate: 4%

[0058] Water-soluble polymer emulsion: 0.5%

[0059] Silicone powder defoamer: 0.01%

[0060] Thixotropic agent: 1.5%

[0061] Thickener: 0.01%

[0062] Coagulant: 0.05%

[0063] Superplasticizer: 0.50%

[0064] Early strength agent: 0.05%;

[0065] The mortar concrete is mixed with fiber: polyoxymethylene fiber 40kg / m 3 , diameter: 300 microns; length: 15 mm, tensile strength: 940MPa, modulus of elasticity: 20GPa;

[0066] Accurately measure the above-mentioned materials and add them to the dry powder mortar automatic production equipment. After mixing evenly, measure and seal the moisture-proof packaging for later use.

Embodiment 2

[0068] A kind of mortar concrete of the present invention, its proportioning is as follows:

[0069] Sulphoaluminate cement: 55%

[0070] Aggregate: 15%

[0071] Spherical Active Hydrate: 8%

[0072] Water-soluble polymer emulsion: 2.0%

[0073] Polyether powder defoamer: 0.06%

[0074] Thixotropic agent: 0.02%

[0075] Thickener: 1.0%

[0076] Coagulant regulator: 0.20%

[0077] Superplasticizer: 0.10%

[0078] Early strength agent: 0.40%

[0079] The mortar concrete is mixed with fiber: polyvinyl alcohol fiber 10kg / m 3 , diameter: 30 microns; length: 6 mm, tensile strength: 1600MPa, modulus of elasticity: 40GPa;

[0080] Accurately measure the above-mentioned materials and add them to the dry powder mortar automatic production equipment. After mixing evenly, measure and seal the moisture-proof packaging for later use.

Embodiment 3

[0082] A kind of mortar concrete of the present invention, its proportioning is as follows:

[0083] Sulphoaluminate cement: 40%

[0084] Aggregate: 22.5%

[0085] Spherical Active Hydrate: 2%

[0086] Water-soluble polymer emulsion: 1.5%

[0087] Silicone powder defoamer: 0.03%

[0088] Thixotropic agent: 1.0%

[0089] Thickener: 0.45%

[0090] Coagulant: 0.15%

[0091] Superplasticizer: 0.35%

[0092] Early strength agent: 0.25%

[0093] The mortar concrete is mixed with fibers: polyvinyl alcohol fibers and polyoxymethylene fibers are 20 and 12 kg / m respectively 3 , wherein polyvinyl alcohol fiber diameter: 40 microns; length: 8 mm, tensile strength: 1540 MPa, modulus of elasticity: 40 GPa; polyoxymethylene fiber diameter: 200 microns; length: 12 mm, tensile strength: 1000 MPa, Elastic modulus: 24GPa;

[0094] Accurately measure the above-mentioned materials and add them to the dry powder mortar automatic production equipment. After mixing evenly, measure and seal ...

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Abstract

The invention discloses a sprayable early-strength type ultra-high toughness mortar concrete system and a preparation method thereof. The sprayable early-strength ultra-high toughness mortar concrete system of the present invention is composed of aluminate cement, early-strength agent, coagulation regulator, thixotropic agent, water-reducing agent, defoaming agent, and special fibers. The optimization of the composition can realize the adjustment of its rheological properties, early strength behavior, spraying construction and strong bonding properties with the matrix. The obtained sprayable early strength ultra-high toughness mortar concrete system can be used in conventional construction projects, roads and military projects. Quick fix.

Description

technical field [0001] The invention relates to the field of fiber-reinforced mortar concrete, in particular to a sprayable early-strength type ultra-high toughness mortar concrete system and a preparation method thereof. Background technique [0002] The rapid construction of projects and the emergency repair and restoration of engineering facilities are important guarantees for improving efficiency and ensuring project safety, and rapid repair materials are the key to realizing emergency repair and construction. At the same time, they are required to have rapid opening, efficient construction, high toughness, strong bonding and low shrinkage. characteristic. Ultra-high toughness concrete has excellent properties such as strain hardening characteristics, excellent crack control ability, and excellent freeze-thaw resistance. It has a wide range of applications in bridge engineering, road pavement engineering, underground engineering, earthquake-resistant structures, and impa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06
CPCC04B28/06C04B2201/10C04B2111/00155C04B14/00C04B24/282C04B24/2652C04B24/42C04B22/0013C04B2103/302C04B22/124C04B22/10C04B16/0675C04B16/0641
Inventor 刘建忠阳知乾刘加平张倩倩张丽辉吕进
Owner JIANGSU SOBUTE NEW MATERIALS
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