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Light high performance ocean concrete and preparation process thereof

A marine concrete, high-performance technology for climate sustainability, sustainable waste treatment, solid waste management, etc., which can solve the problem of neglecting the impact of coarse aggregates, dangerous alkali-aggregate reactions, and insufficient coarse aggregate usage 35 % and other problems, to achieve the effect of excellent seismic performance, good shock resistance and low apparent density

Inactive Publication Date: 2010-02-03
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the researchers did not consider the impact of coarse aggregate at all, and the amount of coarse aggregate used was less than 35%.
In addition, there is a risk of alkali-aggregate reaction between the coarse aggregate used in it, whether it is crushed stone or pebble, and the active cement mortar.

Method used

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  • Light high performance ocean concrete and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Step 1: Measure materials according to the following mass percentages:

[0029] (1). Cement: 15%;

[0030] (2). Ceramsite: 25%;

[0031] (3). Gravel: 15%;

[0032] (4). Fly ash: 15%;

[0033] (5). Slag: 20%;

[0034] (6). Engineering sand: 10%;

[0035] The compound activator is composed of 46.38% kaolin, 26.72% FDN, 15.28% triethanolamine and 11.62% sodium hexametaphosphate.

[0036] Step 2: Soak the ceramsite in water immediately after weighing it, take it out after 30 minutes, and drain the water for about 10 minutes. 10~15min.

[0037] Step 3: Add cement and stir for more than 1min.

[0038] Step 4: Add other coarse and fine aggregates and stir for more than 2 minutes.

[0039] Step 5: Add 0.5-1% of the compound activator accounting for the total amount of the above-mentioned materials and water in a conventional amount, and stir for more than 1.5 minutes to obtain finished concrete.

Embodiment 2

[0041] The first step: first weigh the material according to the following ratio:

[0042] (1). Cement: 30%;

[0043] (2). Ceramsite: 22%;

[0044] (3). Gravel: 12%;

[0045] (4). Fly ash: 10%;

[0046] (5). Slag: 18%;

[0047](6). Engineering sand: 8%;

[0048] The composition of the compound activator is: 32.96% of kaolin; 31.22% of FDN; 20.76% of triethanolamine; 15.06% of sodium hexametaphosphate.

[0049] The implementation process of the third step to the fifth step is exactly the same as that of Example 1.

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Abstract

A light-weight high-performance marine concrete is prepared from cement (15-30%), ceramsite (22-25), broken stone (12-15), powdered coal ash (10-15), slag (18-20), engineering sand (8-10) and the trigger (0.5-1) prepared from kaolin, FDN, triethanolamine and sodium hexametaphosphate. Its preparing process is also disclosed. Its advantages are high strength, high anticorrosion performance and highstability.

Description

technical field [0001] The light-weight high-performance marine concrete and its preparation method relate to a building material that is resistant to the immersion of corrosive media. This material can be used not only in marine engineering, but also in rivers, lakes and underground engineering where corrosive media are intruded. Maintain original performance in the environment. The invention further relates to the preparation process of the concrete. Background technique [0002] Seawater contains K + 、Na + , Ca 2+ , SO 4 2- and Cl - Such as a large number of positive and negative ions and atomic groups, their corrosion of concrete is very serious. Ordinary concrete has no ability to resist seawater corrosion at all. In addition, steel cross-sea bridges and steel and aluminum well platforms in the ocean are not only damaged quickly but also severely by seawater corrosion, and the economic waste is even more prominent. Therefore, it is imperative to replace ordinar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B14/02C04B18/08C04B18/12C04B14/06C04B111/24
CPCY02W30/91
Inventor 祁景玉朱基千杨玉颖王素娟张国欣
Owner TONGJI UNIV
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