Method for preparing high-performance concrete and application

A high-performance concrete and concrete technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems affecting the development and promotion of high-performance concrete and high-performance concrete products, and the engineering or products of corrosive steel bars , Concrete products are easy to crack and other problems, to improve the molding speed and production efficiency, not easy to corrode and mildew, and overcome the effect of low tensile strength

Inactive Publication Date: 2011-10-12
JIANHUA CONSTR MATERIALS (JIANGSU) CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] In the prior art, the production of high-performance concrete or products for construction is generally made of cementitious materials, fine aggregates, water, admixtures, coarse aggregates, etc., and the cementitious materials generally use grades above 32.5 All cement, natural curing or steam curing after production, which results in a long production cycle, high brittleness of concrete, poor flexural resistance, concrete products are also easy to crack, easy to corrode projects or products with steel bars, and there are serious safety hazards , but also affected the development and promotion of high-performance concrete and high-performance concrete products

Method used

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  • Method for preparing high-performance concrete and application

Examples

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Effect test

Embodiment 1

[0021] Production of lightweight wall materials for construction with a length of 3200mm, a plate thickness of 90mm, and a core hole of 42mm, that is, lightweight slats:

[0022] 1) Design the concrete mix ratio according to the requirements of concrete strength grade, frost resistance, crack resistance, flexural resistance and impermeability; prepare concrete raw materials: fine aggregate, cementitious material, admixture, coarse aggregate and engineering fiber,

[0023] 2) Feeding: Put fine aggregate, engineering fiber and cementitious material into the mixer in turn, and then stir for more than 30 seconds to make the engineering fiber evenly distributed and obtain the mixed material; among them, when inputting the engineering fiber, it is best to put Engineered fibers fall on the surface of the fine aggregate;

[0024] 3) Mortar making: put water into the mixer, then stir with the mixed material obtained in step 2), and mix evenly to obtain mortar, wherein the amount of wat...

Embodiment 2

[0032] To produce prestressed high-strength concrete pipe piles of AB type piles with a length of 10 meters, a diameter of 400mm, and a wall thickness of 95mm, the specific method is as follows:

[0033] 1) Prepare concrete raw materials: fine aggregate, cementitious material, admixture, coarse aggregate and engineering fiber, and design the concrete mix ratio according to the requirements of concrete strength grade, frost resistance, crack resistance, flexural resistance and impermeability;

[0034] 2) Feeding: Put fine aggregate, engineering fiber and cementitious material into the mixer in turn, and then stir for more than 45 seconds to distribute the engineering fiber evenly to obtain a mixed material; among them, when putting in the engineering fiber, it is best to put Engineered fibers fall on the surface of the fine aggregate;

[0035] 3) Mortar making: put water into the mixer, then stir with the mixed material obtained in step 2), and mix evenly to obtain mortar, wher...

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Abstract

The invention discloses a method for preparing high-performance concrete and application. The method comprises the following steps of: designing a concrete mixing proportion; sequentially adding fine aggregate, engineering fibers and gel material into a stirrer, and stirring till the engineering fibers are uniformly distributed; and adding water to prepare mortar, adding coarse aggregate, stirring uniformly, and adding an admixture to obtain the high-performance concrete required by design. The prepared high-performance concrete can be used for preparing high-performance concrete products. The method is simple and convenient for processing; the length of the utilized engineering fibers is easily controlled, so that the concrete has good workability, the forming velocity and the production efficiency are improved, the concrete has the advantages of tensile resistance, shearing resistance, cracking resistance, fatigue resistance, high toughness and the like, and concrete cracks caused by temperature stress can be reduced; the microstructure of the cement slurry is improved, and the compactness of the concrete is increased, so that the strength and the durability of the concrete are improved, and the service life of the concrete is prolonged; and the concrete has good safety and economic and social benefits.

Description

technical field [0001] The invention relates to a preparation method of concrete, in particular to a preparation method and application of high-performance concrete. Background technique [0002] High-performance concrete is a new type of high-tech concrete, which is made by using modern concrete technology on the basis of greatly improving the performance of ordinary concrete. Due to its many excellent properties such as high durability, high workability, high strength and high volume stability, it is considered to be the most comprehensive concrete in the world. It has been used in many important projects so far, especially in bridges. , High-rise buildings, harbor buildings and other projects show its unique advantages. [0003] In the prior art, the production of high-performance concrete or products for construction is generally made of cementitious materials, fine aggregates, water, admixtures, coarse aggregates, etc., and the cementitious materials generally use grad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B16/06
CPCC04B28/02Y02W30/91C04B14/02C04B14/06C04B14/068C04B16/0633C04B16/0641C04B16/0658C04B16/0683C04B16/0691C04B18/08C04B18/248C04B20/0076C04B22/143
Inventor 陈芳斌
Owner JIANHUA CONSTR MATERIALS (JIANGSU) CO LTD
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