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Concrete, and preparation method thereof

A technology of concrete and parts by weight, applied in the field of building materials, can solve the problems of poor workability and fluidity of concrete, affecting the strength and durability of concrete, medium sand, crushed stone, and aggregate subsidence, etc., so as to improve the compactness. , The effect of less stratified segregation and bleeding, and improved compactness

Active Publication Date: 2019-02-01
杭州金鼎实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the strength of the existing technology has been improved, the workability and fluidity of the concrete are poor, and it is easy to cause the medium sand, gravel, aggregate, etc. to sink, and the water to float up, resulting in serious bleeding, which makes the concrete Segregation affects the strength and durability of concrete

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] Embodiment 1: Concrete, the components included and their corresponding parts by weight are shown in Table 1, and are prepared through the following steps:

[0064] Step 1, weighing cement, machine-made sand, natural sand, and stones according to the ratio of parts by weight and uniformly mixing to form the first mixture;

[0065] Step 2, weighing the second grade coal ash, mineral powder, ferric chloride, aluminum chloride according to the weight ratio, adding to the first mixture obtained in step 1, and mixing uniformly to form the second mixture;

[0066] Step 3, taking rosin powder, sodium lignosulfonate, sodium dodecylsulfonate, sodium hydroxide, polyacrylamide, and sodium carboxymethyl cellulose according to the ratio of parts by weight, and mixing them uniformly to form an admixture;

[0067] In step 4, water is weighed according to the ratio of parts by weight, and the admixture obtained in step 3 and water are sequentially added to the second mixture obtained i...

Embodiment 2-10

[0071] Examples 2-10: Concrete, the difference from Example 1 is that the raw material components and parts by weight included are as shown in Table 1.

Embodiment 11

[0072] Embodiment 11: Concrete, the difference from Embodiment 1 is that the particle size of Class II coal ash is 100-140 mesh.

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Abstract

The invention discloses a concrete, and a preparation method thereof, and belongs to the field of building material. The concrete comprises, by weight, 320 to 420 parts of cement, 50 to 75 parts of IIgrade fly ash, 45 to 65 parts of ore powder, 470 to 545 parts of machine-made sand, 200 to 240 parts of natural sand, 870 to 910 parts of cobblestone, 128.5 to 210 parts of an additive, and 185 to 200 parts of water; the additive comprises at least four ingredients selected from rosin powder, sodium lignosulfonate, sodium dodecanesulphonate, sodium hdroxide, polyacrylamide, and carboxymethylcellulose sodium. The concrete is capable of avoiding concrete layering, separation, and water segregation, and the concrete compressive strength is increased effectively.

Description

technical field [0001] The present invention relates to the field of building materials, more specifically, it relates to concrete and its preparation process. Background technique [0002] Existing concrete materials generally have low tensile and flexural strength and poor impact resistance, which cannot meet the needs of some special construction fields. At the same time, in the process of mass concrete construction of existing concrete materials, concrete cracks are more common, which affects the quality of the project. [0003] The Chinese patent with application publication number CN107777937A and application publication date of March 9, 2018 discloses concrete, which is made by mixing the following components by weight: 75-90 parts of cement, 50-55 parts of medium sand, gravel 60-70 parts, 30-45 parts of waste calcined material, 5-11 parts of aggregate, 0.8-9.9 parts of sodium sulfite powder, 150-180 parts of water. [0004] Although the strength of the existing tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/00C04B2201/50C04B18/08C04B18/141C04B14/06C04B14/068C04B14/02C04B24/34C04B24/18C04B24/16C04B22/062C04B24/2652C04B24/383C04B22/124C04B22/12C04B22/002
Inventor 金志刚黄建康
Owner 杭州金鼎实业有限公司
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