Erosion-resistant concrete with self-healing capability

A technology of corrosion resistance and concrete, which is applied in the field of concrete, can solve the problems of weak seawater erosion resistance, low service life, and large cement brittleness, and achieve the effects of improving hydrophobic performance, dense slurry structure, and good water resistance

Inactive Publication Date: 2021-03-09
SHANGHAI DUOMAO BUILDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a self-healing corrosion-resistant concrete to solve the existing technical problems of high brittleness of cement, low tensile strength, low service life and weak seawater erosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: A kind of corrosion-resistant concrete with self-healing ability, including the following raw materials in parts by weight, 50 parts of marine portland cement clinker, 39 parts of solid waste powder, 7 parts of alkali-containing waste, alkali 18 parts of stimulating agent, 6 parts of denatured straw, 10 parts of bacterial spores 8 ~10 9 1 spore / square meter of water, 2 parts of titanium dioxide, 13 parts of admixture, and 3 parts of capsule binder.

[0026] The solid waste includes the following components by weight percentage: 50% of blast furnace slag powder, 40% of fly ash, and 10% of agricultural waste ash.

[0027] The alkali-containing waste is composed of raw materials in the following weight percentages: 60% steel slag powder, 20% red mud, 10% alkali slag, and 10% calcium carbide slag.

[0028] The alkali activator is composed of the following components by weight percentage: 50% of water glass and 50% of sodium hydroxide.

[0029] The denatured...

Embodiment 2

[0033] Embodiment 2: A kind of corrosion-resistant concrete with self-healing ability, including the following raw materials in parts by weight, 60 parts of marine Portland cement clinker, 42 parts of solid waste powder, 6 parts of alkali-containing waste, alkali 13 parts of stimulating agent, 10 parts of denatured straw, 10 parts of bacterial spores 8 ~10 9 1 spore per square meter of water, 2 to 3 parts of titanium dioxide, 13 parts of admixture, and 3 parts of capsule binder.

[0034] The solid waste includes the following components by weight percentage: 40% of blast furnace slag powder, 50% of fly ash, and 10% of agricultural waste ash.

[0035] The alkali-containing waste is composed of raw materials in the following weight percentages: 55% steel slag powder, 25% red mud, 10% alkali slag, and 10% calcium carbide slag.

[0036]The alkali activator is composed of the following components by weight: 65% water glass and 35% sodium hydroxide.

[0037] The denatured straw w...

Embodiment 3

[0041] Embodiment 3: A kind of corrosion-resistant concrete with self-healing ability, including the following raw materials in parts by weight, 48 parts of marine portland cement clinker, 35 parts of solid waste powder, 6 parts of alkali-containing waste, alkali 13 parts of stimulating agent, 10 parts of denatured straw, 10 parts of bacterial spores 8 ~10 9 1 spore per square meter of water, 2 to 3 parts of titanium dioxide, 15 parts of admixture, and 5 parts of capsule binder.

[0042] The solid waste includes the following components by weight percentage: 47% of blast furnace slag powder, 45% of fly ash, and 8% of agricultural waste ash.

[0043] The alkali-containing waste is composed of raw materials in the following weight percentages: 80% steel slag powder, 10% red mud, 5% alkali slag, and 5% calcium carbide slag.

[0044] The alkali activator is composed of the following components by weight percentage: 45% water glass and 55% sodium hydroxide.

[0045] The denature...

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PUM

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Abstract

The invention discloses erosion-resistant concrete with self-healing capability, which is prepared from the following raw materials in parts by weight: 40 to 65 parts of maritime work Portland cementclinker, 35 to 43 parts of solid waste powder, 6 to 8 parts of alkali-containing waste, 11.4 to 28.4 parts of alkali activator, 1.0 to 10.0 parts of modified straw, 106 to 109 spores per square meterof water, 2 to 3 parts of titanium dioxide, 10 to 15 parts of additive and 1 to 5 parts of capsule binder. The invention aims to solve the technical problems of short service life and weak seawater corrosion resistance caused by high brittleness and low tensile strength of the existing cement.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to an erosion-resistant concrete with self-healing ability. Background technique [0002] Concrete has defects such as high brittleness and low tensile strength, and it is easy to produce cracks under the influence of the use process and the surrounding environment, so that corrosive media such as sulfate and chloride salts are very easy to invade the interior of the concrete, which is harmful to the concrete itself and The pre-embedded steel bars cause damage, which greatly shortens the service life of the concrete structure, causing huge economic losses and potential safety hazards. [0003] In recent years, countries all over the world have attached great importance to the development of marine resources. The construction of offshore projects such as ports, seawalls, coastal protection, cross-sea bridges, and offshore gas stations in China has developed rapidly. Marine engineer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/20
CPCC04B28/04C04B2111/00827C04B2201/50C04B2111/20C04B18/08C04B18/141C04B18/101C04B18/142C04B18/0481C04B18/0409C04B22/062C04B12/04C04B14/08C04B14/305C04B18/24C04B14/062C04B14/361C04B2103/0001C04B2103/302C04B2103/465C04B2103/0068
Inventor 苏静张庆昌彭西赟彭锦豪方路超鲁森森祝光伦王勇
Owner SHANGHAI DUOMAO BUILDING MATERIALS CO LTD
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