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Concrete pumping agent and application method

A concrete pump and concrete technology, which is applied in the field of concrete pumping agents, can solve the problems of poor concrete fluidity and poor concrete pumpability, and achieve excellent dispersing effect, significant dispersing ability, and improved pumping performance

Inactive Publication Date: 2012-11-21
广州基业长青新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current pumping agent has poor concrete pumpability, which leads to poor fluidity of concrete for a long time during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A concrete pumping agent provided in this embodiment is mainly composed of β-naphthalenesulfonic acid formaldehyde condensate, calcium lignosulfonate, air-entraining agent, starch, and water.

[0024] It can be used, but not limited to, the following methods of use:

[0025] Add β-naphthalenesulfonic acid formaldehyde condensate, calcium lignosulfonate, air-entraining agent, starch, and water to the cement concrete in a predetermined proportion to make the reaction occur, and then add starch to the reactant in a predetermined proportion, Continue to stir for condensation reaction.

[0026] It can be seen from the above that since the concrete pumping agent of this embodiment contains β-naphthalenesulfonic acid formaldehyde condensate and starch, the β-naphthalenesulfonic acid formaldehyde condensate and starch can be polymerized when they are mixed into cement concrete Reaction can significantly improve the mechanical properties, working performance and durability of c...

Embodiment 2

[0029] The weight ratio of the pumping agent of the present embodiment is as follows: 20% of β-naphthalenesulfonic acid formaldehyde condensate, 6% of calcium lignosulfonate, 0.1% of air-entraining agent (SJ-2 air-entraining agent), 10% of starch, Water 50%.

[0030] Its use method is as follows: Add 20% of β-naphthalenesulfonic acid formaldehyde condensate, 6% of calcium lignosulfonate, 0.1% of air-entraining agent (SJ-2), and 50%-65% of water in proportion to make it react; Then, 10% starch by weight is added in proportion to the reactants, and the stirring is continued to carry out the condensation reaction.

[0031] Wherein the denominator of the above weight ratio is the total weight of the β-naphthalenesulfonic acid formaldehyde condensate, calcium lignosulfonate, air-entraining agent and starch.

Embodiment 3

[0033] The weight ratio of the pumping agent in this embodiment is as follows: 30% of β-naphthalenesulfonic acid formaldehyde condensate, 12% of calcium lignosulfonate, 0.2% of air-entraining agent, 25% of starch, and 65% of water.

[0034] Its use method is as follows: Add 30% of β-naphthalenesulfonic acid formaldehyde condensate, 12% of calcium lignosulfonate, 0.2% and 65% of air-entraining agent (SJ-2) in proportion to make it react; Add starch with a weight ratio of 25% into the mixture in proportion, and continue stirring to carry out condensation reaction.

[0035] Wherein the denominator of the above weight ratio is the total weight of the β-naphthalenesulfonic acid formaldehyde condensate, calcium lignosulfonate, air-entraining agent and starch.

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PUM

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Abstract

The present invention relates to the field of building materials, and discloses a concrete pumping agent and an application method. The application method comprises: adding a beta-naphthalene sulfonate formaldehyde condensation compound, calcium lignosulphonate, and an air-entraining agent successively into concrete to induce a chemical reaction; and adding starch in the reaction mixture and stirring for a condensation reaction. The application of the method helps to improve the pumping property of the concrete, making the concrete maintain good liquidity and pumpability in a long time.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a concrete pumping agent and a use method. Background technique [0002] Concrete is a kind of artificial stone material that is prepared in appropriate proportions from cementitious materials (such as cement), water and aggregate, and then hardened and formed after mixing and stirring. [0003] Concrete has the characteristics of rich raw materials, low price, simple production process, high compressive strength, good durability, and wide range of strength grades. Therefore, it is an important material widely used in civil engineering, shipbuilding, machinery industry, marine development, geothermal engineering and other industries. [0004] In the concrete setting process, the admixture that can improve the pumping performance of the concrete mixture is called a pumping agent. The so-called pumpability means that the concrete mixture can pass through the pipeline smoothly wi...

Claims

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Application Information

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IPC IPC(8): C04B24/38C04B24/20C04B24/18
Inventor 胡鉴
Owner 广州基业长青新材料有限公司