High-performance corrosion-resisting concrete pile and preparation method thereof

A corrosion-resistant concrete, high-performance technology, applied in the direction of manufacturing tools, reinforced molding, ceramic molding machines, etc., can solve the problems of poor durability of concrete structures, cracking of concrete structure performance, and reduced durability, so as to achieve significant social benefits and products Effect of quality assurance and production cost reduction

Active Publication Date: 2012-09-12
JIANHUA CONSTR MATERIALS (JIANGSU) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In various harsh environments, concrete has been subjected to corrosive media for a long time, resulting in cracking of concrete structural performance, reduced durability, and premature failure
Due to the poor durability of concrete structures, it has caused huge economic losses to countries all over the world

Method used

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  • High-performance corrosion-resisting concrete pile and preparation method thereof

Examples

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Effect test

Embodiment 1

[0015] A high-performance corrosion-resistant concrete pile whose concrete contains 420kg / m 3 Cementitious materials, natural sand, gravel, polycarboxylate superplasticizer and water, the water-cement ratio is 0.32. Among them, the fineness modulus of natural sand is 3.0, and the sand rate is 36%; the particle size of gravel is 5-25mm, and the crushing value is 5%; and the water reducer (solid content) is 1.0% of the total cementitious material. %; wherein the cementitious material is composed of 54% cement, 35% fly ash (mineral admixture) and 10% highly active synergist. And the percentage by weight of each composition of this high-activity synergist is respectively: 10% active silicon, 70% natural ground gypsum, 14% calcium oxide, 1% N-acyl sodium lauryl sarcosinate and 5% % of inorganic silicates. The concrete density ratio of the above formula is about 2500kg / m 3 .

Embodiment 2

[0017] A high-performance corrosion-resistant concrete pile whose concrete contains 450kg / m 3 For cementitious materials, natural sand, gravel, naphthalene-based high-efficiency water reducer and water, the water-cement ratio is 0.30. Among them, the fineness modulus of natural sand is 2.8, and the sand rate is 35%; the particle size of gravel is 5-25mm, and the crushing value is 5%; and the amount of water reducer used is 3.5% of the total cementitious materials; Wherein the cementitious material is composed of 45% cement, 40% mineral powder (mineral admixture) and 15% highly active synergist. The formula of this high activity synergist is 50% ultrafine fly ash as active silicon, 20% desulfurized gypsum sulfate, 15% calcium oxide, 1% potassium N lauroyl glycinate and 4% inorganic Mixture of silicate and sodium carbonate. The concrete density ratio of the above formula is about 2450kg / m 3 .

Embodiment 3

[0019] A high-performance corrosion-resistant concrete pile whose concrete contains 430kg / m 3 For cementitious materials, artificial sand, gravel, polyhydroxy acid superplasticizer and water, the water-cement ratio is 0.28. Among them, the fineness modulus of the artificial sand is 3.0, and the sand ratio is 37%; the particle size of the crushed stone is 5-25mm, and the crushing value is 5%; and the usage amount of the water reducer is 4% of the total cementitious material; The cementitious material is composed of 85% cement and 15% highly active synergist. And the composition formula of this high-activity synergist is 1% (weight) microsilica powder, 10% desulfurized gypsum, 60% calcium oxide, 0.5% N-lauroyl sodium glutamate and 1.5% silicate and sodium carbonate mixture. The concrete density ratio of the above formula is about 2550kg / m 3 .

[0020] Embodiments 1 to 3 prepare concrete piles by the following methods: the specific production process is as follows: (1) earlie...

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Abstract

The invention discloses a high-performance corrosion-resisting concrete pile and a preparation method thereof. The concrete comprises cementitious material, fine aggregate, coarse aggregate, water reducer and water, wherein the amount of the cementitious material is 350-550 kg / m<3>, the weight of the water reducer (content of solids) is 1.0-4.0 % of the weight of the cementitious material, the water cement ratio is 0.2-0.35, the sand ratio is 30-44 %, and the cementitious material is a mixture of cement and an active synergist or a mixture of cement, mineral admixtures and an active synergist. According to the invention, the performance of the prepared concrete pile can be consistent with the national standards only under the conditions of normal pressure steam curing, and the prepared concrete pile has better durability and strength than the prior art, thus the production cycle and the cost are greatly reduced, and the invention has huge economic benefit and social benefit.

Description

technical field [0001] The invention belongs to the technical field of concrete building materials, and in particular relates to a high-performance corrosion-resistant concrete pile without high-pressure steam curing and a production method thereof. Background technique [0002] Concrete is one of the most versatile and heavily used building materials in civil engineering today. In various harsh environments, concrete has been subjected to the action of corrosive media for a long time, resulting in cracking of concrete structural performance, reduced durability, and premature failure. Due to the poor durability of concrete structures, it has caused huge economic losses to countries all over the world. Our country is currently carrying out the world's largest civil engineering construction, and the durability of concrete has been related to major issues such as national economy and people's livelihood. For civil engineering, improving the durability of concrete has become a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14B28B21/32B28B21/60C04B111/20
Inventor 苟德胜李斌斌
Owner JIANHUA CONSTR MATERIALS (JIANGSU) CO LTD
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