Underwater self-compacting concrete and preparation method thereof

A self-compacting concrete and cement technology, applied in the field of concrete, can solve the problems of incompatibility with underwater engineering, loss of aggregate bonding ability, loss of cement slurry, etc., to improve self-compacting, reduce the possibility of collapse, reduce Small mixing and self-compacting effect

Active Publication Date: 2020-11-20
宁波新力建材科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that when it is applied to pouring underwater projects, if it is in direct contact with water, the erosion of water will cause the cement slurry to separate from the aggregate, resulting in the loss of

Method used

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  • Underwater self-compacting concrete and preparation method thereof
  • Underwater self-compacting concrete and preparation method thereof
  • Underwater self-compacting concrete and preparation method thereof

Examples

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Example

[0044] The preparation methods of Example 1 to Example 4 are as follows:

[0045] s1: Mix the terpene-phenolic resin emulsion, epoxy resin and β-terpene resin according to the ratio in Table 2, and use a stirrer to mix to obtain a thickener for use;

[0046] s2: According to the ratio in Table 2, the coarse aggregate and the fine aggregate are mixed uniformly through a mixer to obtain an aggregate mixture;

[0047] s3: According to the ratio in Table 2, mix the cement and porous microbeads with a mixer, add water and stir to obtain a gel mixture;

[0048] s4: According to the ratio in Table 2, the gel mixture, thickener and film-forming agent are added to the aggregate mixture through a mixer while stirring, and the mixture is evenly stirred to obtain underwater self-compacting concrete.

[0049] The preparation method of Examples 5-7 is different from Example 1 in:

[0050] In step s3, first completely soak the glass beads in the hardener according to the ratio in Table 2 for 4 hours, t...

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Abstract

The invention discloses underwater self-compacting concrete and a preparation method thereof. The concrete is prepared from components in parts by weight as follows: 720-750 parts of coarse aggregate,450-500 parts of fine aggregate, 500-540 parts of cement, 200-240 parts of water, 140-155 parts of porous microspheres, 13-15 parts of a film-forming agent and 35-55 parts of a thickener, and the thickener comprises terpene-phenolic resin emulsion, epoxy resin and beta-terpene resin. The underwater self-compacting concrete and the preparation method thereof provided by the invention have the advantages that the fluidity is higher, the self-compacting effect is realized, the compactness and the strength are improved, and the underwater self-compacting concrete can be poured underwater and is not easy to disperse.

Description

technical field [0001] The invention relates to the technical field of concrete, more specifically, it relates to an underwater self-compacting concrete and a preparation method thereof. Background technique [0002] Self-compacting concrete refers to the concrete that can flow and compact under its own gravity, and can completely fill the formwork even if there are dense steel bars, and at the same time obtain good homogeneity and do not require additional vibration. [0003] The invention patent application with the authorized notification number CN106145834A discloses a self-compacting concrete, including the following components by weight: 100 parts of cement, 38-50 parts of composite admixture, 80-120 parts of pottery sand, 150-250 parts of crushed stone 1.3-2.05 parts of composite admixture, 25-30 parts of water; among them, the composite material includes 25-35 parts of limestone, 13-15 parts of fly ash; the raw materials of composite admixture include naphthalene-bas...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B24/30C04B111/74
CPCC04B28/00C04B40/0039C04B2111/74C04B2201/50C04B14/02C04B14/06C04B14/22C04B24/121C04B24/282C04B24/2641C04B24/302C04B24/281C04B24/008C04B24/26C04B24/34
Inventor 郭学武张致峰丁成斌陈朝辉魏旭东黄凯磊边松磊
Owner 宁波新力建材科技有限公司
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