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Base bottom plate large-space concrete mixing material and mixing method thereof

A foundation base plate and a generous amount of technology, applied in the field of building materials, can solve the problems of high cost of impermeable concrete, etc., and achieve the effects of reducing engineering construction costs, improving cohesion, and solving strength and impermeability

Inactive Publication Date: 2017-07-04
TIANJIN ZEYUAN CONCRETE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the coarse sand is transported from other regions, the cost of impermeable concrete will remain high

Method used

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  • Base bottom plate large-space concrete mixing material and mixing method thereof
  • Base bottom plate large-space concrete mixing material and mixing method thereof
  • Base bottom plate large-space concrete mixing material and mixing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A large amount of concrete mixture for the foundation floor, each cubic meter of raw materials contains:

[0021]

[0022] The fineness modulus of fine sand is 1-2mm. The fineness modulus of medium and coarse sand is 4-5mm. The particle size of the stone is 5-25mm. Portland cement is P·O42.5 Portland cement. The mineral powder is S95 grade mineral powder. The length of polypropylene mesh fibers is 15-20mm.

[0023] The mixing method of the above-mentioned large amount of concrete mixture for the foundation floor is to add stones, fly ash, mineral powder, polypropylene mesh fiber, coarse sand and fine sand in turn while stirring, and stir for 2 minutes to make the polypropylene mesh fiber Fully open, then add Portland cement, water and pumping agent, and stir evenly. Show through many experiments and studies, adopt the C30 / P6 impervious concrete of the present invention's preparation, 7d compressive strength is 22.7Mpa, 28d compressive strength is 33.8Mpa, its st...

Embodiment 2

[0025]

[0026]

[0027] The fineness modulus of fine sand is 1-2mm. The fineness modulus of medium and coarse sand is 4-5mm. The particle size of the stone is 5-25mm. Portland cement is P·O42.5 Portland cement. The mineral powder is S95 grade mineral powder. The length of polypropylene mesh fibers is 15-20mm.

[0028] The mixing method of the above-mentioned large amount of concrete mixture for the foundation floor is to add stones, fly ash, mineral powder, polypropylene mesh fiber, coarse sand and fine sand in turn while stirring, and stir for 2 minutes to make the polypropylene mesh fiber Fully open, then add Portland cement, water and pumping agent, and stir evenly. Show through many tests and studies, adopt the C30 / P6 impervious concrete of the present invention's preparation, 7d compressive strength is 21.5Mpa, 28d compressive strength is 31.5Mpa, its strength and impermeability, durability, abrasion resistance, Various properties such as drying shrinkage and ...

Embodiment 3

[0030] A large amount of concrete mixture for the foundation floor, each cubic meter of raw materials contains:

[0031]

[0032] The fineness modulus of fine sand is 1-2mm. The fineness modulus of medium and coarse sand is 4-5mm. The particle size of the stone is 5-25mm. Portland cement is P·O42.5 Portland cement. The mineral powder is S95 grade mineral powder. The length of polypropylene mesh fibers is 15-20mm.

[0033] The mixing method of the above-mentioned large amount of concrete mixture for the foundation floor is to add stones, fly ash, mineral powder, polypropylene mesh fiber, coarse sand and fine sand in turn while stirring, and stir for 2 minutes to make the polypropylene mesh fiber Fully open, then add Portland cement, water and pumping agent, and stir evenly. Show through many experiments and studies, adopt the C30 / P6 impervious concrete of the present invention's preparation, 7d compressive strength is 23.3Mpa, 28d compressive strength is 34.8Mpa, its st...

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Abstract

The present invention relates to a base bottom plate large-space concrete mixing material, which comprises, by weight, 282-284 parts of Portland cement, 430-450 parts of fine sand, 250-270 parts of medium coarse sand, 1070-1080 parts of stone, 34-36 parts of fly ash, 58-62 parts of ore powder, 130-135 parts of water, 7.6-7.9 parts of a pumping agent, 0.9-1.8 parts of polypropylene mesh fiber, and 24-26 parts of a gas introducing and water reducing agent. According to the present invention, by optimizing the aggregate gradation, controlling the sand rate and the water-cement ratio, and adding the ultrafine polypropylene mesh fiber, the ultrafine polypropylene mesh fiber and the fine sand can be organically combined so as to improve the cohesion between the fine sand and other ingredients, effectively solve the problems of strength reducing, impermeability reducing, durability reducing, crack resistance reducing and workability reducing during the concrete preparation with the special fine sand, and substantially reduce the project construction cost; and by adding introducing the gas introducing and water reducing agent, the impermeability and the freeze-thaw resistance of the concrete are improved.

Description

technical field [0001] The invention relates to a building material, in particular to a large amount of concrete mixing material for a foundation floor and a mixing method thereof. Background technique [0002] Concrete generally refers to the artificial stone made of cement as the main cementitious material, mixed with water, sand, stones, chemical admixtures and mineral admixtures when necessary, mixed in an appropriate proportion, uniformly stirred, densely formed and cured . As a building material with a large amount and a wide range of use in the world, concrete has been widely developed in various countries and regions for its good mechanical properties, economy and adaptability to the environment. put forward higher requirements. As the most commonly used structural form in the field of civil engineering, concrete structures have extremely complex construction and service environments. The durability of concrete in harsh environments is particularly prominent, and h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04
Inventor 吕宝旺
Owner TIANJIN ZEYUAN CONCRETE CO LTD