Concrete and preparation method thereof

A technology for concrete and mixture, applied in the field of concrete and its preparation, can solve the problems of low tensile strength cement concrete structure durability and the like, and achieve the effects of improving structural strength, durability, compactness, and toughness.

Inactive Publication Date: 2020-05-15
广东承沐建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Concrete is the most used building material in the world today, but the inherent low tensile strength of concrete has a great impact on the durability of cement concrete structures, so there is still room for improvement

Method used

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  • Concrete and preparation method thereof
  • Concrete and preparation method thereof
  • Concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] A concrete, its components and parts by mass are shown in Table 1.

[0064] Fine aggregate is a mixture of river sand and pottery sand in a mass ratio of 2:1.

[0065] Wherein, the water reducer is sodium lignin sulfonate.

[0066] A method for preparing concrete, comprising the steps of:

[0067] S1. Preparation of the first mixture: In a cement mixer, under normal temperature, add corresponding parts by mass of water and cement, and stir at a speed of 200 r / min to prepare the first mixture.

[0068] S2. Preparation of the second mixture: add corresponding parts by mass of water reducer and fiber mixture to the first mixture while stirring, and obtain the second mixture after uniform stirring.

[0069] S3. Preparation of the third mixture: In a sandstone mixer, under normal temperature, add corresponding mass parts of fine aggregate, ceramsite and fly ash, stir at a speed of 300r / min, and obtain the third mixture after stirring evenly .

[0070] S4. Preparing concret...

Embodiment 2

[0072] A concrete, the difference from Example 1 is that its components and parts by mass are shown in Table 1.

[0073] Wherein, the fiber mixture is corn stalk fiber, and the preparation method of corn stalk fiber is as follows:

[0074] (1) Mechanically separating corn stalks into short stalks with a length of 5 cm and a width of 1-2 mm.

[0075] (2) Alkali treatment: the short straw is subjected to alkali treatment in a sodium hydroxide solution with a mass percentage concentration of 3%, the mass ratio of the sodium hydroxide solution to the short straw is 30:1, and the temperature of the alkali treatment is 80°C. The alkali treatment time was 1 hour.

[0076] (3) Water washing treatment: the short straw is washed with water after being treated with alkali, and then acid neutralized with dilute hydrochloric acid solution to pH 7 after washing, wherein the concentration of the dilute hydrochloric acid solution is 5%; and then washed with water again after acid neutralizat...

Embodiment 3

[0084] A concrete, the difference from Example 2 is: its components and parts by mass are shown in Table 1.

[0085] In the present embodiment, the preparation method of corn stalk fiber is as follows:

[0086] (1) Mechanically separate corn stalks into short stalks with a length of 10 cm and a width of 1.5 mm.

[0087] (2) Alkali treatment: the short straw is subjected to alkali treatment in a sodium hydroxide solution with a mass percentage concentration of 5%, the mass ratio of the sodium hydroxide solution to the short straw is 40:1, and the temperature of the alkali treatment is 90°C. The alkali treatment time was 1.5 hours.

[0088] (3) Water washing treatment: the short straw is washed with water after being treated with alkali, and then acid neutralized with a dilute hydrochloric acid solution until the pH is 7, and the concentration of the dilute hydrochloric acid solution is 15%. Wash again after acid neutralization.

[0089] (4) Drying: drying at a temperature of...

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Abstract

The invention relates to the field of concrete preparation. More particularly, the invention relates to concrete and a preparation method thereof, and the concrete is characterized by comprising the following components in parts by mass: 60-85 parts of water, 120-170 parts of cement, 380-480 parts of a fine aggregate, 326-462 parts of ceramsite, 45-60 parts of fly ash, 5-9 parts of a water reducing agent and 10-18 parts of a fiber mixture. The concrete has the beneficial effects that the durability of the concrete is enhanced, and meanwhile, the environmental protection requirement is favorably met.

Description

technical field [0001] The invention relates to the technical field of concrete preparation, more specifically, it relates to a concrete and a preparation method thereof. Background technique [0002] The term concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate, mixed with water in a certain proportion, and then stirred, formed and cured. It is also called ordinary concrete and is widely used in civil engineering. [0003] Concrete is the most used building material in the world today, but the inherent low tensile strength of concrete has a great impact on the durability of cement concrete structures, so there is still room for improvement. Contents of the invention [0004] A first object of the present invention is to provide a concrete which has the advantage of enhancing the durability of the concrete. [0005] To achieve the first purpose, the present invention provides the following technical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B111/34
CPCC04B28/06C04B2111/343C04B2201/50C04B14/06C04B18/027C04B18/08C04B24/18C04B18/248C04B22/062C04B22/122C04B24/36C04B22/06C04B24/40C04B22/16C04B18/12
Inventor 吴华明
Owner 广东承沐建设工程有限公司
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