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High-corrosion-resistance submicron composite material and applications thereof

A composite material, sub-micron technology, applied in the field of building materials, can solve the problems of large water demand, easy agglomeration, expensive nano materials, etc., to achieve the effect of small water demand, low compressive strength loss rate, and improved mechanical properties

Active Publication Date: 2020-04-03
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high price of nanomaterials, and the problems of easy agglomeration and large water demand, their large-scale application in cement-based materials is limited, and most researches are still in the stage of experimental testing and evaluation.

Method used

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  • High-corrosion-resistance submicron composite material and applications thereof
  • High-corrosion-resistance submicron composite material and applications thereof
  • High-corrosion-resistance submicron composite material and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1. Preparation of high-corrosion submicron composite materials:

[0040] Weigh the raw materials according to the following mass percentages and components, and fully mix them; the raw material components and quantities are as follows:

[0041] 40 parts of ultrafine mineral powder, 10 parts of ultrafine fly ash, 10 parts of gypsum, 500nm Al 2 o 3 20 parts, metakaolin 10 parts, anhydrous calcium sulfoaluminate early strength mineral 10 parts.

[0042] 2. Cement sample preparation:

[0043] Take the high-corrosion-resistant submicron composite material prepared in step 1, mix it into marine POP32.5 cement at a cement mass percentage of 3%, and mix thoroughly to make an improved cement sample.

[0044] 3. Physical performance test of cement:

[0045] The cement samples prepared by the above method are tested according to GB / T 17671 "Cement Mortar Strength Test Method (ISO Method)" and GB / T 1346 "Cement Standard Consistency Water Consumption, Setting Time and Stability...

Embodiment 2

[0051] The same as in Example 1, the change is: when preparing the cement sample, the amount of the high-corrosion-resistant submicron composite material is adjusted to 2% by mass.

[0052] The performance test results are shown in Table 1-6.

Embodiment 3

[0054] Same as in Example 1, the change is: when preparing the cement sample, the amount of the high-corrosion-resistant submicron composite material is adjusted to 5% by mass.

[0055] The performance test results are shown in Table 1-6.

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Abstract

The invention provides a high-corrosion-resistance submicron composite material and applications thereof. The high-corrosion-resistance submicron composite material is prepared from the following components in percentage by mass: 40-60% of superfine mineral powder, 0-30% of ultrafine fly ash, 6-12% of gypsum, 10-25% of submicron Al2O3, 0-25% of submicron SiO2, 0-25% of submicron TiO2, 0-20% of metakaolin, and 0-20% of anhydrous calcium sulphoaluminate early strength mineral, wherein the high-corrosion-resistance submicron composite material accounting for 2-5% of the mass of cement is doped into the cement, and uniform mixing is performed. According to the invention, the submicron composite material has excellent properties of high corrosion resistance and low shrinkage, and is low in cost and simple in preparation process; and when the submicron composite material is applied to an ocean engineering cement cementing material in a complex ocean environment, good beneficial effect can be achieved, and the submicron composite material has wide application prospect.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a high-corrosion-resistant submicron composite material and its application. Background technique [0002] Chloride corrosion is the primary factor affecting the corrosion of concrete reinforcement in marine environments. In order to improve the durability of concrete engineering structures in the marine environment, methods such as surface coating, internal rust inhibitors, external cathodic protection, material optimization, and application of high-performance concrete are usually used at home and abroad. Portland cement is an important basic cementitious material for concrete engineering in the marine environment, and its composition and structure have an important impact on the performance of concrete. Developed countries such as France, the Netherlands, and Japan have developed special anti-erosion cement-based materials for marine engineering by using mineral ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/14
CPCC04B40/0039C04B18/12C04B18/08C04B22/143C04B14/303C04B14/305C04B14/106C04B14/062C04B7/323
Inventor 姚燕王昕郭隋华张金山程伟郑旭李文武何力宋立春
Owner CHINA BUILDING MATERIALS ACAD
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