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High-strength concrete and preparation method thereof

A concrete and high-strength technology, applied in the field of high-strength concrete and its preparation, can solve problems such as shortening the setting time, and achieve the effects of reducing concrete cracks, solving the shortening of setting time and excellent slump.

Inactive Publication Date: 2016-09-21
罗荣娟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to provide a kind of high-strength concrete, give full play to the effect of CTF concrete synergist to improve the dispersion of cement particles, and solve the problems such as shortening of setting time, ensure excellent slump, workability and Compressive strength

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0048] A preparation method for high-strength concrete, comprising the steps of:

[0049] 1) Put the construction waste and waste calcined material into the crusher together, and use the crusher to crush to obtain a waste mixture. The block diameter of the waste mixture is less than 30mm;

[0050] 2) Then put sand, reinforcing fiber, iron powder, sodium sulfite powder, fly ash, river sand, pebbles, stones, epoxy resin and sodium sulfide into the mixer for 1-3 minutes, then add a small amount of water, then add the waste mixture in step 1), continue to stir for 5-10 minutes after adding, then add water until the water overflows for 10-15 minutes, then continue to stir for 15-20 minutes, and finally obtain the high-strength concrete of the present invention .

[0051] The beneficial effects of the present invention are: the present invention can give full play to the effect of the CTF concrete synergist to improve the dispersion of cement particles, and solve the problems of sh...

Embodiment 1

[0053] Select the following quality materials: Portland cement 100kg, sand 200kg, construction waste 200kg, waste calcined material 200kg, reinforcing fiber 10Kg, iron powder 5kg, sodium sulfite powder 2kg, fly ash 35kg, river sand 100kg, pebbles 35kg, Stones 100kg, epoxy resin 5kg, sodium sulfide 3kg, CTF concrete synergist 2kg, water 500kg.

[0054] Each component selected above is prepared according to the following method:

[0055]1) Put the construction waste and waste calcined material into the crusher together, and use the crusher to crush to obtain a waste mixture. The block diameter of the waste mixture is less than 30mm;

[0056] 2) Then put sand, reinforcing fiber, iron powder, sodium sulfite powder, fly ash, river sand, pebbles, stones, epoxy resin and sodium sulfide into the mixer for 2 minutes, then add a small amount of water, Then add the waste material mixture in step 1), continue to stir for 8 minutes after adding, then add water until the water overflows fo...

Embodiment 2

[0059] Select the following quality materials: Portland cement 80kg, sand 200kg, construction waste 100kg, waste calcined material 200kg, reinforcing fiber 10Kg, iron powder 15kg, sodium sulfite powder 3kg, fly ash 25kg, river sand 100kg, pebbles 10kg, Stones 200kg, epoxy resin 5kg, sodium sulfide 3kg, CTF concrete synergist 2kg, water 800kg.

[0060] Each component selected above is prepared according to the following method:

[0061] 1) Put the construction waste and waste calcined material into the crusher together, and use the crusher to crush to obtain a waste mixture. The block diameter of the waste mixture is less than 30mm;

[0062] 2) Then put sand, reinforcing fiber, iron powder, sodium sulfite powder, fly ash, river sand, pebbles, stones, epoxy resin and sodium sulfide into the mixer for stirring for 3 minutes, and then add a small amount of water, Then add the waste material mixture in step 1), continue to stir for 6 minutes after adding, then add water until the ...

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Abstract

The invention discloses high-strength concrete and a preparation method thereof. The high-strength concrete is prepared from the following substances in mass: Portland cement, sand, building debris, a waste calcining material, reinforced fibers, ferrous powder, sodium sulfite powder, coal ash, river sand, cobblestone, pebbles, epoxy resin, sodium sulfide, a CTF concrete synergistic agent and water. The high-strength concrete can fully exert the effect of the CTF concrete synergistic agent and improve the dispersity of cement particles; furthermore, the problem of shortening of the condensation time is solved, and excellent slump, peaceability and compressive strength are guaranteed; by the doping of the CTF concrete synergistic agent, the compactness of a concrete mixture can be improved, the resistance to permeation of concrete can be enhanced, concrete cracks can be reduced, and the durability of the concrete can be improved.

Description

technical field [0001] The invention relates to a high-strength concrete and a preparation method thereof. Background technique [0002] With the rapid development of the economy, my country's construction industry is also developing rapidly, and the use of concrete has also increased greatly. However, during the pouring and hardening process of concrete, the volume will shrink due to chemical reduction, cold shrinkage and dry shrinkage; and the unit The more cement and water used, the larger the concrete volume, the faster the water evaporates, and the more obvious the shrinkage; generally, the shrinkage value per 1m3 of concrete is 0.04 to 0.09%, which will lead to cracking, leakage, corrosion of steel bars, and pre-stressed concrete. Negative consequences such as stress loss. [0003] In order to solve this problem, according to different concrete mix ratios, curing systems and restraint states, adding an appropriate amount of expansion agent or waterproofing agent can sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B14/02C04B14/068C04B24/281C04B22/14C04B18/08C04B18/16C04B20/0048C04B2103/0068C04B18/023C04B14/34
Inventor 罗荣娟
Owner 罗荣娟
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