Anti-crack concrete and preparation method thereof

A concrete and mixture technology, applied in the field of concrete, can solve the problems of concrete performance reduction, concrete toughness deterioration, spalling, etc., and achieve the effects of improving compactness, tight bonding, and improving crack resistance

Active Publication Date: 2021-08-31
深圳市东大洋水泥制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As the strength of concrete increases, the toughness of concrete will deteriorate, causing cracks in concrete, resulting in a decrease in concrete performance; as time goes by, cracks on the surface of concrete will expand rapidly, easily causing spalling
[0004] Usually the staff will increase the amount of cement when preparing concrete to increase the c

Method used

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  • Anti-crack concrete and preparation method thereof
  • Anti-crack concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0052] Example 1-3

[0053] A method of preparing concrete cracking, comprising the steps of:

[0054] Step 1) polycarboxylate superplasticizer, zinc acetate, sodium metabisulfite and water into the stirred tank, stirred at temperature 60 ℃ and speed 60r / min for 6 minutes, the mixture was stirred to give a first, standby.

[0055] Step 2) cement, slag, fly ash, gravel, river sand into the horizontal mixer, stirred at speed 80r / min full 2 ​​minutes to prepare a second mixture is stirred;

[0056] Step 3) The first mixture was stirred and polyvinyl alcohol fibers were added to a second stirred mixture was stirred at sufficient speed 90r / min for 1 minute, and then put into a dry ice for 1 minute, to prepare concrete cracking.

[0057] Referring to the various inputs of the raw materials in Table 2, wherein the slag is slag ground ore crushed to powder with a particle size range of 0.15-0.3mm; dry ice particle size in the range of 2.5-10mm, polyvinyl alcohol fibers length rangin...

Example Embodiment

[0060] Example 4

[0061] A method of preparing a crack-cracking concrete, and 0.07 kg of six methyltrine is also invested in step 3).

Example Embodiment

[0062] Example 5

[0063] A method of preparing a crack-cracking concrete, and 0.032 kg of tetraborate is also invested in step 3).

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Abstract

The invention discloses anti-crack concrete and a preparation method thereof. The anti-crack concrete is prepared from the following components in parts by mass: 723 to 753 parts of fine aggregate; 1011 to 1101 parts of coarse aggregate; 152 to 172 parts of water; 144 to 160 parts of cement; 98 to 112 parts of mineral powder; 81 to 91 parts of fly ash; 5.3 to 5.9 parts of a water reducing agent; 20 to 70 parts of polyvinyl alcohol fiber; 2.4 to 3.5 parts of zinc acetate; 1.8 to 4.2 parts of dry ice; and 4.1 to 7.3 parts of sodium pyrosulfite. The product provided by the invention has the advantage of improving the crack resistance of concrete.

Description

Technical field [0001] The present invention relates to the field of concrete, and particularly to a method for preparing concrete cracking. Background technique [0002] In recent years, with the vigorous development of the domestic construction industry, the performance and strength requirements of the construction process of continuous improvement of concrete; concrete refers to the use of cement, sand, stone and water, additives and admixtures with a certain percentage, by mixing, molding, obtained by curing cement concrete. Because concrete is extremely rich in raw materials and inexpensive, and can adapt to a variety of purposes, have better resilience to natural conditions, as the current most widely used in construction projects, the most important basic materials. [0003] With the increase of strength of concrete, the concrete will deteriorate the toughness of the concrete cracks, thereby resulting in reduced properties of the concrete; crack over time, the concrete sur...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B111/34
CPCC04B28/00C04B2111/343C04B18/08C04B2103/302C04B16/0641C04B24/04C04B22/06C04B22/14C04B18/141C04B14/02C04B14/06C04B24/121C04B22/08Y02W30/91
Inventor 马伍平
Owner 深圳市东大洋水泥制品有限公司
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