阅读说明：本技术 一种混凝土高效减水剂及其制备方法 (Concrete high-efficiency water reducing agent and preparation method thereof ) 是由 崔松 于 2019-10-17 设计创作，主要内容包括：一种混凝土高效减水剂及其制备方法,该混凝土减水剂的质量份组成如下：聚羧酸减水剂母液40-45份、亚硫酸钠20-30份、氢氧化钠20-30份、粉煤灰20-30份、硼砂5-10份、玉米杆5-10份、玉米芯5-10份、白糖5-10份、保坍剂5-10份、淀粉10-20份、粘度调节剂10-20份、消泡剂5-10份、引发剂5-10份、水60-80份。本发明方便保存,性能稳定,且提高减水剂的抗裂性能。(A concrete high-efficiency water reducing agent and a preparation method thereof are disclosed, wherein the concrete water reducing agent comprises the following components in parts by mass: 40-45 parts of polycarboxylic acid water reducing agent mother liquor, 20-30 parts of sodium sulfite, 20-30 parts of sodium hydroxide, 20-30 parts of fly ash, 5-10 parts of borax, 5-10 parts of cornstalks, 5-10 parts of corncobs, 5-10 parts of white sugar, 5-10 parts of slump retaining agent, 10-20 parts of starch, 10-20 parts of viscosity regulator, 5-10 parts of defoaming agent, 5-10 parts of initiator and 60-80 parts of water. The invention has convenient storage and stable performance, and improves the crack resistance of the water reducing agent.)

1. The concrete high-efficiency water reducing agent is characterized by comprising the following components in parts by mass: 40-45 parts of polycarboxylic acid water reducing agent mother liquor, 20-30 parts of sodium sulfite, 20-30 parts of sodium hydroxide, 20-30 parts of fly ash, 5-10 parts of borax, 5-10 parts of cornstalks, 5-10 parts of corncobs, 5-10 parts of white sugar, 5-10 parts of slump retaining agent, 10-20 parts of starch, 10-20 parts of viscosity regulator, 5-10 parts of defoaming agent, 5-10 parts of initiator and 60-80 parts of water.

2. The concrete high efficiency water reducing agent according to claim 1, characterized in that the concrete water reducing agent comprises the following components in parts by mass: 40 parts of polycarboxylate superplasticizer mother liquor, 20 parts of sodium sulfite, 20 parts of sodium hydroxide, 20 parts of fly ash, 5 parts of borax, 5 parts of cornstalks, 5 parts of corncobs, 5 parts of white sugar, 5 parts of slump retaining agent, 10 parts of starch, 10 parts of viscosity regulator, 5 parts of defoaming agent, 5 parts of initiator and 60 parts of water.

3. The concrete high efficiency water reducing agent according to claim 1, characterized in that the concrete water reducing agent comprises the following components in parts by mass: 42.5 parts of polycarboxylate superplasticizer mother liquor, 25 parts of sodium sulfite, 25 parts of sodium hydroxide, 25 parts of fly ash, 7.5 parts of borax, 7.5 parts of cornstalks, 7.5 parts of corncobs, 7.5 parts of white sugar, 7.5 parts of slump retaining agent, 15 parts of starch, 15 parts of viscosity regulator, 7.5 parts of defoaming agent, 7.5 parts of initiator and 70 parts of water.

4. The concrete high efficiency water reducing agent according to claim 1, characterized in that the concrete water reducing agent comprises the following components in parts by mass: 45 parts of polycarboxylate superplasticizer mother liquor, 30 parts of sodium sulfite, 30 parts of sodium hydroxide, 30 parts of fly ash, 10 parts of borax, 10 parts of cornstalks, 10 parts of corncobs, 10 parts of white sugar, 10 parts of slump retaining agent, 20 parts of starch, 20 parts of viscosity regulator, 10 parts of defoaming agent, 10 parts of initiator and 80 parts of water.

5. The concrete superplasticizer of claim 1, wherein said initiator is ammonium sulfate.

6. The preparation method of the concrete high-efficiency water reducing agent is characterized by comprising the following steps:

the method comprises the following steps: respectively stirring and crushing cornstalks and corncobs, mixing the cornstalks and the corncobs with sodium sulfite, fly ash, borax, starch and water, and heating to fully dissolve the components to obtain a first mixed material;

step two: adding the polycarboxylate superplasticizer mother liquor, sodium hydroxide and white sugar into the mixed material I, fully and uniformly stirring, and putting the mixture into a heater for heating in order to further dissolve the white sugar to obtain a mixed material II;

step three: adding a slump retaining agent, a viscosity regulator, a defoaming agent and an initiator into the mixed material II, and uniformly stirring to obtain a mixed material III;

step four: and continuing stirring the mixed material III for 2 hours, and naturally cooling to room temperature to obtain a finished product.

Technical Field

The invention relates to a water reducing agent, in particular to a concrete high-efficiency water reducing agent and a preparation method thereof, belonging to the technical field of water reducing agents.

Background

The water reducing agent is a concrete admixture capable of reducing the mixing water consumption under the condition of maintaining the slump constant of concrete. Most of them are anionic surfactants, such as lignosulfonate and naphthalene sulfonate formaldehyde polymer. After the concrete mixture is added, the dispersion effect on cement particles is achieved, the workability of the concrete mixture can be improved, the unit water consumption is reduced, and the fluidity of the concrete mixture is improved; or the unit cement consumption is reduced, and the cement is saved.

However, the currently used water reducing agent has single performance, is not easy to store and cannot play a role in cracking resistance.

Disclosure of Invention

Aiming at the problems in the prior art, the concrete high-efficiency water reducing agent disclosed by the invention is convenient to store, and the anti-cracking performance of the water reducing agent is improved.

In order to achieve the purpose, the invention adopts the technical scheme that: the concrete high-efficiency water reducing agent comprises the following components in parts by mass: 40-45 parts of polycarboxylic acid water reducing agent mother liquor, 20-30 parts of sodium sulfite, 20-30 parts of sodium hydroxide, 20-30 parts of fly ash, 5-10 parts of borax, 5-10 parts of cornstalks, 5-10 parts of corncobs, 5-10 parts of white sugar, 5-10 parts of slump retaining agent, 10-20 parts of starch, 10-20 parts of viscosity regulator, 5-10 parts of defoaming agent, 5-10 parts of initiator and 60-80 parts of water.

Further, the concrete water reducing agent comprises the following components in parts by mass: 40 parts of polycarboxylate superplasticizer mother liquor, 20 parts of sodium sulfite, 20 parts of sodium hydroxide, 20 parts of fly ash, 5 parts of borax, 5 parts of cornstalks, 5 parts of corncobs, 5 parts of white sugar, 5 parts of slump retaining agent, 10 parts of starch, 10 parts of viscosity regulator, 5 parts of defoaming agent, 5 parts of initiator and 60 parts of water.

Further, the concrete water reducing agent comprises the following components in parts by mass: 42.5 parts of polycarboxylate superplasticizer mother liquor, 25 parts of sodium sulfite, 25 parts of sodium hydroxide, 25 parts of fly ash, 7.5 parts of borax, 7.5 parts of cornstalks, 7.5 parts of corncobs, 7.5 parts of white sugar, 7.5 parts of slump retaining agent, 15 parts of starch, 15 parts of viscosity regulator, 7.5 parts of defoaming agent, 7.5 parts of initiator and 70 parts of water.

Further, the concrete water reducing agent comprises the following components in parts by mass: 45 parts of polycarboxylate superplasticizer mother liquor, 30 parts of sodium sulfite, 30 parts of sodium hydroxide, 30 parts of fly ash, 10 parts of borax, 10 parts of cornstalks, 10 parts of corncobs, 10 parts of white sugar, 10 parts of slump retaining agent, 20 parts of starch, 20 parts of viscosity regulator, 10 parts of defoaming agent, 10 parts of initiator and 80 parts of water.

Further, the initiator is ammonium sulfate.

A preparation method of a concrete high-efficiency water reducing agent comprises the following steps:

the method comprises the following steps: respectively stirring and crushing cornstalks and corncobs, mixing the cornstalks and the corncobs with sodium sulfite, fly ash, borax, starch and water, and heating to fully dissolve the components to obtain a first mixed material;

step two: adding the polycarboxylate superplasticizer mother liquor, sodium hydroxide and white sugar into the mixed material I, fully and uniformly stirring, and putting the mixture into a heater for heating in order to further dissolve the white sugar to obtain a mixed material II;

step three: adding a slump retaining agent, a viscosity regulator, a defoaming agent and an initiator into the mixed material II, and uniformly stirring to obtain a mixed material III;

step four: and continuing stirring the mixed material III for 2 hours, and naturally cooling to room temperature to obtain a finished product.

The invention has the advantages of convenient storage, stable performance and improved anti-cracking performance of the water reducing agent.

Detailed Description

The present invention is further described below.