Preparation method of underwater anti-dispersive concrete

An anti-dispersion, concrete technology, applied in the field of concrete, can solve problems such as poor pouring quality, and achieve the effect of excellent anti-dispersion performance

Inactive Publication Date: 2018-06-26
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although concrete can be solidified and hardened underwater, the pouring quality is poor. Therefore, only in unavoidable situations, or in the underwater part of some secondary buildings, the method of underwater pouring is adopted.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method of underwater anti-dispersion concrete, said preparation method comprising the steps of:

[0034] ① By weight, take 6 parts of Portland cement, 1 part of fly ash, 1.5 parts of mineral powder, 0.5 part of metakaolin, 3 parts of gravel I, 4 parts of gravel II, 6 parts of gravel III, 3 parts of sand I, 2 parts 1 part of sand II, 0.1 part of flocculant and 4 parts of water;

[0035] The particle size of the stone I is 10mm;

[0036] The particle size of the stone II is 7mm;

[0037] The particle size of the stone III is 5mm;

[0038] The particle diameter of the sand I is 3.5mm;

[0039] The particle size of the sand II is 1.5mm;

[0040] ② Add Portland cement, fly ash, mineral powder, metakaolin, gravel I, gravel II, gravel III, sand I, sand II and flocculant weighed in step ① into water and mix well;

[0041] ③ Forming the product obtained in step ②;

[0042] ④ The product obtained in step ③ has a free drop of 500 mm in water, and is cured in wa...

Embodiment 2

[0044] A preparation method of underwater anti-dispersion concrete, said preparation method comprising the steps of:

[0045] ① In parts by weight, take 5 parts of Portland cement, 1 part of fly ash, 1 part of mineral powder, 0.3 part of metakaolin, 4 parts of gravel I, 3 parts of gravel II, 5 parts of gravel III, 4 parts of sand I, 4 parts 1 part of sand II, 0.1 part of flocculant and 3 parts of water;

[0046] The particle diameter of the stone I is 9.5mm;

[0047] The particle size of the stone II is 8mm;

[0048] The particle size of the stone III is 6mm;

[0049] The particle diameter of the sand I is 4mm;

[0050] The particle size of the sand II is 2mm;

[0051] ② Add Portland cement, fly ash, mineral powder, metakaolin, gravel I, gravel II, gravel III, sand I, sand II and flocculant weighed in step ① into water and mix well;

[0052] ③ Forming the product obtained in step ②;

[0053] ④ The product obtained in step ③ has a free fall of 550 mm in water, and is cure...

Embodiment 3

[0055] A preparation method of underwater anti-dispersion concrete, characterized in that: the preparation method comprises the following steps:

[0056] ① By weight, take 4.5 parts of Portland cement, 1 part of fly ash, 1.2 parts of mineral powder, 0.3 parts of metakaolin, 2 parts of gravel I, 2.5 parts of gravel II, 4 parts of gravel III, 2 parts of sand I, 3 parts 1 part of sand II, 0.2 part of flocculant and 4 parts of water;

[0057] The particle diameter of the stone I is 9mm;

[0058] The particle size of the stone II is 7.5mm;

[0059] The particle size of the stone III is 5.5mm;

[0060] The particle diameter of the sand I is 4.5mm;

[0061] The particle size of the sand II is 2.5mm;

[0062] ② Add Portland cement, fly ash, mineral powder, metakaolin, gravel I, gravel II, gravel III, sand I, sand II and flocculant weighed in step ① into water and mix well;

[0063] ③ Forming the product obtained in step ②;

[0064] ④ The product obtained in step ③ has a free fal...

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PUM

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Abstract

The invention relates to a preparation method of underwater anti-dispersive concrete, and belongs to the field of concrete. The preparation method comprises the following steps: (1) weighing 3-6 partsby weight of Portland cement, 1 part by weight of fly ash, 2-4 parts by weight of stones I with a particle size of 9-10 mm, 2-4 parts by weight of stones II with a particle size of 7-8 mm, 4-6 partsby weight of stones III with a particle size of 5-6 mm, 2-4 parts by weight of sand I with a particle size of 3.5-4.5 mm, 2-4 parts by weight of sand II with a particle size of 1.5-2.5 mm, 0.1-0.2 part by weight of a flocculating agent and 2-4 parts by weight of water; (2) adding the cement, the fly ash, the stones I, the stones II, the stones III, the sand I, the sand II and the flocculating agent which are weighed in the step (1) into the water and carrying out uniform stirring; (3) carrying out molding on the product obtained in the step (2); and (4) curing the product obtained in the step(3) to obtain the underwater anti-dispersive concrete. The underwater concrete prepared by the preparation method has excellent anti-dispersive performance.

Description

technical field [0001] The invention relates to a method for preparing underwater anti-dispersion concrete, which belongs to the field of concrete. Background technique [0002] Concrete that is mixed in a dry place and poured and hardened underwater is called underwater concrete. Although concrete can be solidified and hardened underwater, the pouring quality is poor. Therefore, only in the case of last resort, or in the underwater part of some secondary buildings, the method of underwater pouring is adopted. The requirements for underwater pouring concrete are relatively high, and must have the characteristics of underwater non-separation, self-compacting, low bleeding and retarding. [0003] However, the 21st century is the century of ocean development, and the frequency of concrete underwater construction will increase. Therefore, it is very necessary to study underwater concrete. Contents of the invention [0004] In the invention, the prepared underwater concrete h...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/74
CPCC04B28/04C04B2111/74C04B18/08C04B18/141C04B14/106C04B14/02C04B14/06C04B2103/0068
Inventor 谢丽媛赵岩张志伟
Owner DALIAN UNIV OF TECH
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