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Dam concrete mixing material for water conservancy projects and stirring and pouring construction method

A water conservancy engineering and concrete technology, applied in dams, infrastructure engineering, buildings, etc., can solve the problems of insufficient strength, impermeability and frost resistance, and achieve the effect of improving strength, ensuring safety, and ensuring excellent quality.

Inactive Publication Date: 2019-06-11
吴银龙 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a dam concrete mixing material for water conservancy projects and a construction method of mixing and pouring, which has the advantages of excellent impermeability and frost resistance and high strength, and solves the problem of dams currently constructed in the waters of the Yellow River. Due to the long-term erosion of river water, there are certain deficiencies in strength, impermeability and frost resistance.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0029] A kind of embankment concrete mixing material for water conservancy project, comprises the raw material composition of following proportions by weight:

[0030] 90 parts of low-heat Portland cement;

[0031] Pass 120 parts of fine sand through a 100-120 mesh sieve;

[0032] Pass 100 parts of coarse sand through a 60-80 mesh sieve;

[0033] Pass 20 parts of coarse sand through a 10-20 mesh sieve;

[0034] 10-20 parts of silicon oxide particles;

[0035] 4.5 parts of silica fume powder;

[0036] Admixture 6.6 parts;

[0037] The balance is water.

[0038] According to above-mentioned technical scheme, the present invention proposes a kind of mixing method of water conservancy engineering dam concrete mixing material in addition:

[0039] S1: prepare low heat Portland cement, fine sand, medium coarse sand, coarse sand, silicon oxide particles, silica fume powder, admixture and water according to the ratio of parts by weight;

[0040] S2: Put fine sand, medium coarse...

Embodiment 2

[0047] A dam concrete mixing material for water conservancy projects, characterized in that it comprises the following raw materials in parts by weight:

[0048] 120 parts of low-heat Portland cement;

[0049] Pass 140 parts of fine sand through a 100-120 mesh sieve;

[0050] Pass 120 parts of coarse sand through a 60-80 mesh sieve;

[0051] Pass 40 parts of coarse sand through a 10-20 mesh sieve;

[0052] 20 parts of silicon oxide particles;

[0053] 6 parts of silica fume powder;

[0054] Admixture 8.6 parts;

[0055] The balance is water.

[0056] According to above-mentioned technical scheme, the present invention proposes a kind of mixing method of water conservancy engineering dam concrete mixing material in addition:

[0057] S1: prepare low heat Portland cement, fine sand, medium coarse sand, coarse sand, silicon oxide particles, silica fume powder, admixture and water according to the ratio of parts by weight;

[0058] S2: Put fine sand, medium coarse sand, coa...

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Abstract

The invention relates to the technical field of dam concrete mixing and pouring, and discloses a dam concrete mixing material for water conservancy projects. The dam concrete mixing material consistsof the following raw materials in parts by weight: 90-120 parts of low-heat Portland cement, 120-140 parts of fine sand of 100-120 meshes; 100-120 parts of medium-coarse sand of 60-80 meshes, 20-40 parts of coarse sand of 10-20 meshes, 10-20 parts of silicon oxide particles, 4.5-6 parts of silica fume powder, 6.6-8.6 parts of an additive and the balance of water. According to the dam concrete mixing material for water conservancy projects and a stirring and pouring construction method, strength of the whole concrete can be better improved by utilizing sand with different grain diameters; the purposes of high permeability resistance and frost resistance can be achieved through the match of the additive; excellent performance of Yellow River dams in preventing river water erosion is guaranteed through a strict construction technology, and safety of the dams is ensured.

Description

technical field [0001] The invention relates to the technical field of dam concrete mixing and pouring, in particular to a dam concrete mixing material for water conservancy projects and a mixing and pouring construction method. Background technique [0002] Water conservancy is a water conservancy project for the development of water resources and the prevention of floods. Dams are a very important part of water conservancy projects. Dams generally refer to buildings and structures that are waterproof and water-retaining, and concrete is a very important part of the structure of dams. Due to the erosion of river water, there are certain deficiencies in strength, impermeability and frost resistance. A new type of concrete that can resist long-term erosion and a new mixing and pouring process are needed to improve the overall service life of the Yellow River dam. Contents of the invention [0003] (1) Solved technical problems [0004] Aiming at the deficiencies of the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E02B7/08E02D15/02C04B111/74
Inventor 杨丽云郑飞明李艳红段海荣翟一卓吕志方
Owner 吴银龙
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