Marine concrete with high freeze thawing resistance as well as preparation method thereof

A marine concrete and high frost resistance technology, applied in the field of marine concrete, can solve the problems of low freeze-thaw resistance and inability to meet the low temperature environment of marine concrete, so as to reduce moisture content, improve freeze-thaw resistance, and enhance filling degree of effect

Active Publication Date: 2020-02-07
北京建工新型建材有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the large temperature difference between morning and evening in oceans, rivers, and lakes, the above-mentioned marine concrete has low freeze-thaw resistance, which cannot meet the needs of marine concrete in low-temperature environments for a long time.

Method used

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  • Marine concrete with high freeze thawing resistance as well as preparation method thereof
  • Marine concrete with high freeze thawing resistance as well as preparation method thereof
  • Marine concrete with high freeze thawing resistance as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: A high freeze-thaw-resistant marine concrete, made of component A and component B with a mass ratio of 50:1, component A consists of 4 parts of Portland cement, 10 parts of crushed stone, 6 parts Made of yellow sand and 0.05 parts polycarboxylate. B component is silicon carbide modified water glass.

[0040] A method for preparing high freeze-thaw resistant marine concrete, comprising the steps of:

[0041] Prepare component A according to the ratio, and put component A into the concrete preparation kiln. The concrete preparation kiln includes a reaction chamber 1 and a mixing chamber 2 fixed at the bottom of the reaction chamber 1 . Under normal temperature, component A is fully stirred in the stirring cabin 2 for 1 hour.

[0042] Weigh water glass and silicon carbide powder with a mass ratio of 100:1 and put them into reaction chamber 1, and react in a water bath at 60°C for 30 minutes to obtain component B.

[0043] Open the feeding valve 3 at the bott...

Embodiment 2

[0054] Example 2: A high freeze-thaw-resistant marine concrete, made of component A and component B with a mass ratio of 100:1, component A consists of 4.5 parts of Portland cement, 11 parts of crushed stone, 7 parts It is made of yellow sand, 0.04 part of sodium lignosulfonate and 0.04 part of sulfonated melamine formaldehyde resin. B component is silicon carbide modified water glass.

[0055] A method for preparing high freeze-thaw resistant marine concrete, comprising the steps of:

[0056] Prepare component A according to the ratio, and put component A into the concrete preparation kiln. The concrete preparation kiln includes a reaction chamber 1 and a mixing chamber 2 fixed at the bottom of the reaction chamber 1 . Under normal temperature, component A was fully stirred in the mixing chamber 2 for 1.5 hours.

[0057] Weigh water glass and silicon carbide powder with a mass ratio of 110:1 and put them into reaction chamber 1, and react in a water bath at 70°C for 45 min...

Embodiment 3

[0059] Example 3: A high freeze-thaw resistance marine concrete, made of A component and B component with a mass ratio of 200:1, A component consists of 5 parts of Portland cement, 12 parts of crushed stone, 8 parts Made of yellow sand, 0.02 parts of polycarboxylate and 0.08 parts of calcium lignosulfonate. B component is silicon carbide modified water glass.

[0060] A method for preparing high freeze-thaw resistant marine concrete, comprising the steps of:

[0061]Prepare component A according to the ratio, and put component A into the concrete preparation kiln. The concrete preparation kiln includes a reaction chamber 1 and a mixing chamber 2 fixed at the bottom of the reaction chamber 1 . Under normal temperature, component A was fully stirred in the mixing chamber 2 for 2 hours.

[0062] Weigh water glass and silicon carbide powder with a mass ratio of 120:1 and put them into reaction chamber 1, and react in a water bath at 75°C for 60 minutes to obtain component B.

...

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Abstract

The invention discloses marine concrete with high freeze thawing resistance as well as a preparation method thereof and relates to the technical field of the marine concrete. The marine concrete withhigh freeze thawing resistance comprises a component A and a component B, wherein the component A comprises Portland cement, broken stones, yellow sand and a water-reducing agent; and the component Bis silicon carbide modified water glass. The preparation method comprises the following steps: preparing the component A according to proportion and throwing the component A into a stirring cabin to perform complete stirring; weighing water glass and silicon carbide powder, throwing the water glass and the silicon carbide powder into a reaction cabin, performing complete reaction under the water-bath condition to obtain the component A, and completely stirring the component A and the component B for 0.5 to 1 hour under the normal-temperature condition to obtain the final product. The marine concrete with high freeze thawing resistance has the advantage of improving the freeze thawing resistance of the marine concrete; in addition, the preparation method has the advantage of improving the compressive strength of the marine concrete with high freeze thawing resistance.

Description

technical field [0001] The invention relates to the technical field of marine concrete, more specifically, it relates to a high freeze-thaw resistant marine concrete and a preparation method thereof. Background technique [0002] At present, marine concrete mostly refers to the concrete used in marine engineering, and marine concrete is the concrete used in structures that are often splashed by waves. [0003] For the prior art, please refer to the Chinese invention patent with the publication number CN106431026A, which discloses a silica-alumina-based marine concrete material and its preparation method, which includes mixing and grinding mineral admixtures, Portland cement clinker and diagenetic agents, Prepare the silica-alumina-based cementitious material; mix and stir the prepared silica-alumina-based cementitious material with aggregate, admixture and water; pour the prepared silica-aluminum-based marine concrete slurry into the mold for curing , made of silica-alumina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B40/00C04B111/20C04B111/24
CPCC04B28/26C04B2111/20C04B2111/24C04B2201/32C04B2201/50C04B14/324C04B7/02C04B14/02C04B14/06C04B24/283C04B40/0082C04B24/18C04B24/223
Inventor 陈喜旺张登平李强王军孔凡敏王丽丽李燕伟王杰之张弯李威
Owner 北京建工新型建材有限责任公司
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