A kind of production method of marine cement block

An offshore cement and production method technology, applied in the field of building materials, can solve the problems of inconvenient construction and engineering quality control, lack of uniform standards for preparation technology, unfavorable production and construction costs, etc., and achieves good compactness and volume stability, high. The effect of resistance to chloride ion diffusion and excellent durability

Active Publication Date: 2018-03-02
广西云燕特种水泥建材有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems existing in on-site preparation include: the lack of uniform standards for preparation technology, the preparation process is relatively complicated, which brings inconvenience to construction and project quality control, and is not conducive to saving production and construction costs

Method used

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  • A kind of production method of marine cement block

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 A method for producing a marine cement block. The parts by weight of raw materials are as follows: 30 parts of slag; 10 parts of sulphoaluminate cement clinker; 0.03 parts of composite activator; 2 parts of early strength agent; 0.3 part of sodium polynaphthaldehyde sulfonate; 0.005 part of air-entraining agent sodium secondary alkyl sulfonate; 0.3 part of hydroxycarboxylate retarder.

[0034] The weight percent of the chemical composition of sulphoaluminate cement clinker is: Al 2 o 3 : 20%-40%, SiO 2 : 2%-10%, Fe 2 o 3 : 5%-15%, SO 3 : 5%-15%, C 4 A 3 S: 40%-65%, C 2 S: 10%-30%, C 4 AF: 20%-35%; the rest is CaO or CaCO 3 .

[0035] The weight percent of the chemical composition of slag is: SiO 2 : 30%-40%, Al 2 o 3 : 12%-18%, MgO: 8%-12%, Fe 2 o 3 : 0.6%-1.0%, TiO 2 : 0.1%-0.5%, MnO 2 : 0.5%-1%, the rest is CaO or CaCO 3 .

[0036] The production method comprises the following steps:

[0037] a. Drying: The slag waste is sent to the vert...

Embodiment 2

[0042] The parts by weight of raw materials are as follows: 40 parts of slag; 20 parts of sulphoaluminate cement clinker; 0.04 parts of composite activator; 2 parts of early strength agent; 0.005 part of sodium alkyl sulfonate; 0.4 part of hydroxy carboxylate as retarder.

[0043] The weight percent of the chemical composition of sulphoaluminate cement clinker is: Al 2 o 3 : 20%-40%, SiO 2 : 2%-10%, Fe 2 o 3 : 5%-15%, SO 3 : 5%-15%, C 4 A 3 S: 40%-65%, C 2 S: 10%-30%, C 4 AF: 20%-35%; the rest is CaO or CaCO 3 .

[0044] The weight percent of the chemical composition of slag is: SiO 2 : 30%-40%, Al 2 o 3 : 12%-18%, MgO: 8%-12%, Fe 2 o 3 : 0.6%-1.0%, TiO 2 : 0.1%-0.5%, MnO 2 : 0.5%-1%, the rest is CaO or CaCO 3 .

[0045] Production method is identical with embodiment 1.

Embodiment 3

[0047] The parts by weight of raw materials are as follows: 50 parts of slag; 30 parts of sulphoaluminate cement clinker; 0.05 parts of composite activator; 4 parts of early strength agent; 0.005 part of sodium alkyl sulfonate; 0.5 part of hydroxy carboxylate retarder.

[0048] The weight percent of the chemical composition of sulphoaluminate cement clinker is: Al 2 o 3 : 20%-40%, SiO 2 : 2%-10%, Fe 2 o 3 : 5%-15%, SO 3 : 5%-15%, C 4 A 3 S: 40%-65%, C 2 S: 10%-30%, C 4 AF: 20%-35%; the rest is CaO or CaCO 3 .

[0049] The weight percent of the chemical composition of slag is: SiO 2 : 30%-40%, Al 2 o 3 : 12%-18%, MgO: 8%-12%, Fe 2 o 3 : 0.6%-1.0%, TiO 2 : 0.1%-0.5%, MnO 2 : 0.5%-1%, the rest is CaO or CaCO 3 .

[0050] Other raw materials and production method are identical with embodiment 1.

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Abstract

The invention discloses a production method of a marine engineering cement block. The marine engineering cement block comprises the following raw materials in parts by weight: 30-80 parts of slag, 10-50 parts of a sulphoaluminate cement clinker, 0.03-0.05 part of an accelerating activating admixture, 2-4 parts of an early strength agent, 0.3-0.5 part of a water reducing agent, 0.005-0.007 part of an air entraining agent and 0.3-0.5 part of a retarder. The production method comprises the following steps: respectively crushing, milling and homogenizing the slag waste, the sulphoaluminate cement clinker, the accelerating activating admixture and the early strength agent; and mixing and homogenizing ingredients at the ratio, adding the water reducing agent, the air entraining agent and the retarder for mixing, homogenizing and molding to obtain the product. The marine engineering cement block disclosed by the invention also has excellent characteristics of high strength, seawater washing resistance, early hardening resistance, long-term erosion resistance and the like besides of properties of an ordinary cement block, and is especially suitable for ports, wharfs and other erosion medium-corroded engineering.

Description

technical field [0001] The invention relates to a building material, in particular to a building block. Background technique [0002] Most of the main structures of coastal water conservancy projects use ordinary concrete blocks. And judging from the current development situation, in the next few decades, the materials used in the construction of coastal water conservancy projects will still be dominated by concrete structures. As we all know, once a durability problem occurs in a concrete project, it is very difficult to repair it. Therefore, the coastal water conservancy project should pay great attention to the durability design. For a long time, many coastal water conservancy projects mainly use ordinary cement, and the corresponding seawater erosion-resistant concrete is mixed on site according to the requirements. However, due to the on-site mixing process and quality control problems, it is difficult for some structures to achieve the ideal design service life. Poor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06C04B18/14
CPCY02W30/91
Inventor 黄芳杨毅农承战
Owner 广西云燕特种水泥建材有限公司
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