Injectable early-strength ultrahigh-toughness mortar concrete system and preparation method thereof

A technology of mortar concrete with ultra-high toughness, which is applied in the field of fiber reinforced mortar concrete, which can solve the problems of low matrix bond strength, low early strength, and difficulty in spraying construction, etc., to improve product competitiveness, strengthen interface bond performance, Effect of reducing material cost

Active Publication Date: 2018-11-30
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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  • Injectable early-strength ultrahigh-toughness mortar concrete system and preparation method thereof
  • Injectable early-strength ultrahigh-toughness mortar concrete system and preparation method thereof
  • Injectable early-strength ultrahigh-toughness mortar concrete system and preparation method thereof

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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 an injectable early-strength ultrahigh-toughness mortar concrete system and a preparation method thereof. The injectable early-strength ultrahigh-toughness mortar concrete system is prepared from aluminate cement, an early strength agent, a thickening time control agent, a thixotropic agent, a water reducing agent, a defoaming agent, special fibers and the like. According to the injectable early-strength ultrahigh-toughness mortar concrete system and the preparation method thereof, the rheological characteristics, the early strength behavior, the injection constructionand the strong base body bonding characteristic of the system can be adjusted through optimization of the components, and the obtained injectable early-strength ultrahigh-toughness mortar concrete system can be applied to rapidly repair of conventional constructional engineering and road and military engineering.

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 Applications(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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