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Method for producing high-salinity maritime work cement through mineral waste residue waste materials

A technology of marine cement and sulphoaluminate cement, which is applied in the direction of cement production, 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 achieve good compactness and volume Effects of stability, high resistance to chloride ion diffusion, and excellent durability

Inactive Publication Date: 2016-01-27
广西云燕特种水泥建材有限公司
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  • Summary
  • 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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  • Method for producing high-salinity maritime work cement through mineral waste residue waste materials
  • Method for producing high-salinity maritime work cement through mineral waste residue waste materials
  • Method for producing high-salinity maritime work cement through mineral waste residue waste materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A marine cement, comprising the following raw materials by weight: 30 parts of slag; 45 parts of sulfoaluminate cement clinker; 0.03 parts of composite activator; 4 parts of early strength agent; 0.3 part of water reducing agent; 0.005 part of air-entraining agent part; 0.4 part of retarder.

[0034] Described sulfoaluminate cement clinker is the sulfoaluminate cement clinker obtained by replacing bauxite production with low-grade bauxite or aluminum slag at 1:1; the main component is Al 2 O 3 , SiO 2 , CaO, Fe 2 O 3 , SO 3 , C 4 A 3 S, C 2 S, C 4 AF. Its chemical composition is mainly 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%), CaO added to 100%.

[0035] The water reducing agent is sodium polynaphthalene sulfonate; the air-entraining agent is sodium secondary alkyl sulfonate; the retarder is hydroxycarboxylate;

[0036] The slag is a kind of powder obtained by grinding...

Embodiment 2

[0044] A marine cement, comprising the following raw materials by weight: 35 parts of slag; 40 parts of sulfoaluminate cement clinker; 0.05 parts of composite activator; 3 parts of early strength agent; 0.4 part of water reducing agent; 0.007 part of air-entraining agent part; 0.3 part of retarder.

[0045] Described sulfoaluminate cement clinker is the sulfoaluminate cement clinker obtained by replacing bauxite production with low-grade bauxite or aluminum slag at 1:1; the main component is Al 2 O 3 , SiO 2 , CaO, Fe 2 O 3 , SO 3 , C 4 A 3 S, C 2 S, C 4 AF. Its chemical composition is mainly 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%), CaCO 3 added to 100%;

[0046] The water reducing agent is sodium polynaphthalene sulfonate; the air-entraining agent is sodium secondary alkyl sulfonate; the retarder is hydroxycarboxylate;

[0047] The slag is a kind of powder obtained by grind...

Embodiment 3

[0055] A marine cement, comprising the following raw materials by weight: 40 parts of slag; 50 parts of sulfoaluminate cement clinker; 0.04 part of composite activator; 3 parts of early strength agent; 0.5 part of water reducing agent; 0.006 part of air-entraining agent part; 0.5 part of retarder.

[0056] The described sulfoaluminate cement clinker is the sulfoaluminate cement clinker obtained by replacing bauxite production with low-grade bauxite or aluminum slag at 1:1; the main components are Al2O3, SiO2, CaO, Fe2O3, SO3 , C4A3S, C2S, C4AF. Its chemical composition is mainly Al 2 O 3 (20%-40%), SiO 2 (2%-10%), CaO (30%-45%), 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%);

[0057] The water reducing agent is sodium polynaphthalene sulfonate; the air-entraining agent is sodium secondary alkyl sulfonate; the retarder is hydroxycarboxylate;

[0058] The slag is a kind of powder obtained by grinding blast furnace water slag, t...

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Abstract

The invention discloses a method for producing high-salinity maritime work cement through mineral waste residue waste materials. The high-salinity maritime work cement is prepared from, by weight, 30-40 parts of mineral waste residues, 40-50 parts of sulphate aluminum cement clinker, 0.03-0.05 part of composite activating agents, 2-4 parts of early strength agents, 0.3-0.5 part of water reducing agents, 0.005-0.007 part of air entraining agents and 0.3-0.5 part of retarder. The method for producing the high-salinity maritime work cement comprises the steps that the mineral waste residue waste materials, the sulphate aluminum clinker, the composite activating agents and the early strength agents are smashed, ground into powder and homogenized respectively and then dosed, mixed and homogenized according to proportions, then the water reducing agents, the air entraining agents and the retarder are added, mixed and homogenized, and the product is obtained. The high-salinity maritime work cement has the performance of common cement, further has the excellent characters of early-stage hardness resisting, long-term corrosion resistance, retardation progressive increasing and the like, and is especially suitable for ports, wharfs and other engineering which are corroded by corrosive media.

Description

technical field [0001] The invention relates to a production method of marine cement, in particular to a production method of high-salt-resistant marine cement that is energy-saving and environmentally friendly. Background technique [0002] In marine engineering, marine cement and its components are in the marine environment. Ordinary reinforced concrete buildings are eroded by Cl in seawater, and affected by the alternation of wet and dry, and the erosion of ocean waves. Due to long-term work in corrosive environments, service In only ten to twenty years, there have been various degrees of damage, some of which have reached the level of needing major repairs or demolition, and even collapse and other dangerous situations may cause accidents. Among them, chloride corrosion is the most direct, serious and common cause of steel corrosion, and it is also an important indicator that affects the service life of prestressed concrete structures. The durability of concrete is seri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/32
CPCY02P40/10
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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