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Anti-explosion and anti-impact grouting material and preparation method thereof

A kind of grouting material and impact resistance technology, applied in the field of anti-knock and impact-resistant grouting material and its preparation, which can solve the problems of burst damage, loss of bearing capacity, high brittleness of high-strength and ultra-high-strength grouting materials, and achieve the effect of high fluidity

Pending Publication Date: 2021-12-07
CCCC FIRST HARBOR ENG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem in the prior art that the high-strength and ultra-high-strength grouting materials are brittle and easily burst and lose bearing capacity after reaching the limit load, the present invention invents an anti-explosion and impact-resistant ultra-high performance grouting material. The grouting material has comprehensive properties such as high fluidity, self-compacting, high early strength, ultra-high strength, high toughness, high explosion resistance, high impact resistance, no shrinkage and high durability, which can realize high durability and high safety of the grouting structure

Method used

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  • Anti-explosion and anti-impact grouting material and preparation method thereof

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Embodiment 1

[0037] Example 1 Preparation of a kind of anti-knock and anti-shock grouting material 1

[0038] An anti-explosion and impact-resistant grouting material 1, the composition and mass percentage of the grouting material are: 45% of composite cementitious material, 55% of sand blending, 1.45% of mixed admixture (accounting for the mass percentage of composite cementitious material), Tough material (volume ratio) 0.80%. in:

[0039] 1) The composition of the composite cementitious material is: 75% of PI525 cement, 15% of microbeads, 4% of silica fume, and 6% of hardening expansion agent.

[0040] 2) The composition of sand preparation is: 8% of 6-8 mesh, 10% of 8-10 mesh, 25% of 10-20 mesh, 19% of 20-40 mesh, 17% of 40-70 mesh, 12% of 70-120 mesh, 120-200 mesh 9%.

[0041] 3) The composition of the blended admixture (accounting for the mass percentage of the composite gelling material) is 0.50% of the water reducer, 0.02% of the retarder, 0.40% of the defoamer, 0.50% of the pol...

Embodiment 2

[0045] Embodiment 2 Preparation of a kind of anti-knock and anti-shock grouting material 2

[0046] An anti-explosion and impact-resistant grouting material 2, the composition and mass percentage of the grouting material are: 50% of composite cementitious material, 50% of sand blending, 1.65% of mixed admixture (accounting for the mass percentage of composite cementitious material), Tough material (volume ratio) 1.20%. in:

[0047] 1) The composition of the composite cementitious material is: 70% of PI625 cement, 18% of microbeads, 6% of silica fume, and 6% of hardening expansion agent.

[0048] 2) The composition of sand preparation is: 8% of 6-8 mesh, 10% of 8-10 mesh, 25% of 10-20 mesh, 19% of 20-40 mesh, 17% of 40-70 mesh, 12% of 70-120 mesh, 120-200 mesh 9%.

[0049] 3) The composition of the blended admixture (accounting for the mass percentage of the composite gelling material) is 0.70% of the water reducer, 0.01% of the retarder, 0.50% of the defoamer, 0.50% of the ...

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Abstract

The invention discloses an anti-explosion and anti-impact grouting material and a preparation method thereof. The anti-explosion and anti-impact grouting material is prepared from the following raw materials: a composite cementing material, mixed sand, a mixed admixture and a toughening material; and after water is added and mixed, the anti-explosion and anti-impact grouting material has the advantages that the initial fluidity is larger than or equal to 300 mm, the 1 d compressive strength is larger than or equal to 75 MPa, the 3 d compressive strength is greater than or equal to 100 MPa, the 28 d compressive strength is greater than or equal to 140 MPa, the 56 d compressive strength is greater than or equal to 150 MPa, the 28 d vertical expansion rate is 0.01-0.20%, the 28 d electric flux is less than or equal to 300 C, the toughness index I10 is greater than or equal to 7, the damage impact energy consumption is greater than or equal to 25000 J, and the grouting material has the comprehensive properties of high flowability, high early strength, ultrahigh strength, high toughness, high explosion resistance, high impact resistance, no shrinkage, high durability and the like, and can realize high durability and high safety of a grouting structure.

Description

technical field [0001] The invention belongs to the technical field of engineering materials, and in particular relates to an anti-explosion and anti-shock grouting material and a preparation method thereof. Background technique [0002] With the development of grouting materials in the direction of high strength, high performance and multi-functionality, how to solve the problem of increased brittleness and cracking of grouting materials has become a hot issue in the development and application of grouting materials. [0003] In the prior art, high-strength and ultra-high-strength grouting materials have disadvantages such as high brittleness, poor blast resistance and impact resistance, which restrict the improvement of the mechanical properties, durability, blast resistance, impact resistance and fatigue resistance of the grouting structure. The toughness and deformation ability of the material play a vital role in ensuring the long-term use and safety performance of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/20C04B111/90
CPCC04B28/04C04B2201/50C04B2111/90C04B2111/2038C04B18/08C04B18/146C04B14/06C04B14/48C04B22/066C04B24/10C04B24/32C04B24/26C04B2103/302C04B2103/0068
Inventor 曹忠露侯晋芳苏忠纯赵鹏李俊毅米胜东李沛张鹏周晓朋王娜李斌李杰
Owner CCCC FIRST HARBOR ENG
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