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Concrete with high tenacity

A concrete and high-toughness technology, applied in the field of building materials, can solve the problems of affecting the service life of concrete structures, reducing the durability of concrete, low compressive elastic modulus, etc. the effect of strength

Inactive Publication Date: 2018-02-16
安徽省神洲建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since both the cement slurry body and the interface transition zone in concrete contain unevenly distributed, different types and quantities of solid phases, pores and micro-cracks, the concrete is susceptible to the influence of the external environment, resulting in the expansion of concrete micro-cracks, harmful substances, etc. The intrusion causes concrete deterioration, reduces the durability of concrete, and affects the service life of concrete structures; at the same time, the compressive elastic modulus of existing concrete is low, and the compressive strength and bending-tensile strength also have room for further improvement.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A kind of concrete with high toughness, which is made of the following components in parts by weight: cement 60, gypsum powder 15, mineral powder 12, barite powder 10, polypropylene fiber 1.2, glass fiber 1.2, fine sand 50, carbide slag 25 , Phosphorus slag powder 1, fly ash 10, trihydroxyethylmethylamine methyl sulfate salt 0.35, composite gel 20.

[0015] Further, the specific surface area of ​​the mineral powder is 320m 2 / kg, the fluidity ratio of mineral powder is 85%, the activity index of mineral powder is >50% in 7 days, and the activity index in 28 days is >70.

[0016] Further, the cement is aluminate cement.

[0017] Further, the specific surface area of ​​the aluminate cement is 380m 2 / kg, the 70μm square hole sieve shall not exceed 5%.

[0018] Further, the tris-hydroxyethylamine methyl sulfate salt is any one of tris-hydroxyethylamine methyl sulfate potassium or tris-hydroxyethylamine methyl sulfate sodium.

[0019] Further, the preparation method of ...

Embodiment 2

[0022] A kind of concrete with high toughness, made of the following components in parts by weight: cement 80, gypsum powder 20, mineral powder 18, barite powder 22, polypropylene fiber 1.8, glass fiber 1.8, fine sand 60, carbide slag 30 , Phosphorus slag powder 3, fly ash 15, tris-hydroxyethylamine methyl sulfate 0.38, composite gel 30.

[0023] Further, the specific surface area of ​​the mineral powder is 320m 2 / kg, the fluidity ratio of mineral powder is 85%, the activity index of mineral powder is >50% in 7 days, and the activity index in 28 days is >70.

[0024] Further, the cement is aluminate cement.

[0025] Further, the specific surface area of ​​the aluminate cement is 380m 2 / kg, the 70μm square hole sieve shall not exceed 5%.

[0026] Further, the tris-hydroxyethylamine methyl sulfate salt is any one of tris-hydroxyethylamine methyl sulfate potassium or tris-hydroxyethylamine methyl sulfate sodium.

[0027] Further, the preparation method of the composite gel ...

Embodiment 3

[0030] A kind of concrete with high toughness, made of the following components in parts by weight: cement 70, gypsum powder 16, mineral powder 15, barite powder 16, polypropylene fiber 1.5, glass fiber 1.5, fine sand 52, carbide slag 28 , Phosphorus slag powder 2, fly ash 12, trihydroxyethylmethylamine methyl sulfate 0.37, composite gel 27.

[0031] Further, the specific surface area of ​​the mineral powder is 320m 2 / kg, the fluidity ratio of mineral powder is 85%, the activity index of mineral powder is >50% in 7 days, and the activity index in 28 days is >70.

[0032] Further, the cement is aluminate cement.

[0033] Further, the specific surface area of ​​the aluminate cement is 380m 2 / kg, the 70μm square hole sieve shall not exceed 5%.

[0034] Further, the tris-hydroxyethylamine methyl sulfate salt is any one of tris-hydroxyethylamine methyl sulfate potassium or tris-hydroxyethylamine methyl sulfate sodium.

[0035] Further, the preparation method of the composite ...

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Abstract

The invention discloses concrete with high tenacity. The concrete with high tenacity relates to the technical field of building materials, and is prepared from the following components: cement, gypsumpowder, mineral powder, blanc fixe, polypropylene fiber, glass fiber, fine sand, carbide slags, phosphorus slag powder, pulverized fuel ash, triethoxyl methylamine methyl sulfate salt and a plural gel. The concrete provided by the invention has a low heat conductivity coefficient. The concrete with high tenacity prepared by the invention not only has the lower heat conductivity coefficient, but also has favorable strength and anti-permeability, and particularly, the tenacity and the malleability are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to concrete with high toughness. Background technique [0002] Ordinary concrete is an artificial stone made of cementitious materials, coarse and fine aggregates and water in an appropriate proportion, and then hardened. From the macroscopic inspection of the concrete section, the concrete is composed of aggregate particles of different sizes and shapes and the hydrated cement paste of the discontinuous cementing medium. From the microscopic point of view, the two phases are neither uniform with each other in the microstructure. distribution, the microstructure itself is not homogeneous. The microstructure of the cement paste adjacent to the large-grained aggregate is usually quite different from the cement paste or mortar body in the system, that is, the interfacial transition zone. Since both the cement slurry body and the interface transition zone in con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
CPCC04B28/14C04B2201/32C04B2201/50C04B7/32C04B14/02C04B14/368C04B16/0633C04B14/42C04B14/06C04B18/0481C04B18/08C04B24/121C04B18/027
Inventor 胡万伟孙连军郭胡健
Owner 安徽省神洲建材科技有限公司
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