CN106396466A

CN106396466A - Concrete compound water reducing agent, and preparation method thereof

Info

Publication number: CN106396466A
Application number: CN201610737368.5A
Authority: CN
Inventors: 王新荣
Original assignee: Suzhou Booming Building Material Co Ltd
Current assignee: Suzhou Booming Building Material Co Ltd
Priority date: 2016-08-29
Filing date: 2016-08-29
Publication date: 2017-02-15

Abstract

The invention discloses a concrete compound water reducing agent. The concrete compound water reducing agent comprises, by mass, 10 to 30 parts of a water reducing agent mother liquor, 5 to 10 parts of a alcohol amine compound, 5 to 10 parts of a cellulose water-retention material, 1 to 5 parts of a catalyst, 5 to 10 parts of a slow-setting plastic retaining agent, 5 to 10 parts of a viscosity modifier, and 5 to 10 parts of an air entraining agent. A preparation method of the concrete compound water reducing agent comprises following steps: the water reducing agent mother liquor, the alcohol amine compound, the cellulose water-retention material, the catalyst, the slow-setting plastic retaining agent, the viscosity modifier, the air entraining agent, and tape water are delivered into a reaction kettle successively; an obtained mixture is stirred from about 20min so as to obtain a uniform solution via dissolving and obtain the concrete compound water reducing agent. The concrete compound water reducing agent is capable of improving adaptability of concrete additives greatly, improving the operability of concrete, and improving concrete anti-freezing and thawing performance, and possesses excellent effect in controlling concrete slump loss.

Description

A kind of concrete composite water reducer and preparation method thereof

Technical field

The present invention relates to technical field of concrete additives, particularly to a kind of concrete composite water reducer and its preparation side Method.

Background technology

In recent years, concrete technology is advanced by leaps and bounds, and wherein, most important technological break-through is the use of concrete admixture.Mixed Solidifying soil additive can be used for improving fresh concrete workability, improves maturing physical and mechanical property and durability.Mesh Before, the direction of concrete admixture development is high-performance, multi-functional compound additive, and only Composite could tackle increasingly complexity Cement component, promote the development of new concrete and new construction technology.High efficiency water reducing agent is most important of which one class material Material.

Water-reduction study mechanism shows, can reduce cement concrete water consumption (identical workability by three kinds of effects Under), that is,：Peptizaiton, initial stage aquation inhibitory action, air-entraining effect.

Concrete adds water after stirring, and system is unstable, and wherein easily flocculation is agglomerating for cement particle, so part trip It is wrapped in the middle of the cement particle of flocculation from water.

Going deep into and environmental requirement with cement industry energy-saving and emission-reduction, the various garbage admixtures in concrete are day by day Complexity, current additive product, it is frequently encountered by some adaptability problems, in the urgent need to address.

Content of the invention

The present invention is directed to defect present in prior art, now provides a kind of concrete composite water reducer and its preparation side Method, this water reducer water-reducing rate is high, and loss of slump is little, and the strong adaptability with cement also has deferred action.

For achieving the above object, the present invention adopts following technical proposals：

A kind of concrete composite water reducer, including following component by mass percentage：10～30 parts of water reducer mother solutions, 5～ 10 parts of alcamine compounds, 5～10 parts of cellulose water-keeping materials, 1～5 part of catalyst, 5～10 parts of slow setting plasticity-maintaining agents, 5～10 parts Viscosity modifier and 5～10 parts of air entraining agents.

Preferably, described water reducer mother solution is naphthalene sulfonic acid-formaldehyde condensation product, aldehyde ketone sulfonation condensation substance, sulfamate formaldehyde One or more of condensation substance mixture.

Preferably, described alcamine compound is one of triethanolamine, triisopropanolamine, the different hydramine of diethanol list.

Preferably, described cellulose water-keeping material is methylcellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl fiber One of element.

Preferably, described catalyst is alkali metal hydroxide, carbonate or bicarbonate.

Preferably, described slow setting plasticity-maintaining agent is the one of citric acid or sodium gluconate, sodium tripolyphosphate or sodium hexameta phosphate Plant or two or more mixture.

Preferably, described viscosity modifier is cellulose ether, one or two mixture of xanthan gum.

Preferably, described air entraining agent be animal waste hair-hydrolyzation thing, dodecylbenzene sodium sulfonate one or two Mixture.

The preparation method of described concrete composite water reducer is as follows：

Comprise the following steps：Put into water reducer mother solution, alcamine compound, cellulose water-keeping material successively in a kettle., urge Agent, slow setting plasticity-maintaining agent, viscosity modifier, air entraining agent and tap water, stirring makes it be dissolved into homogeneous solution in 20 minutes about, obtains To concrete composite water reducer.

The present invention compared with prior art, has the advantages that：Not only contained amino in alcamine compound molecule but also Containing hydroxyl, there is the combination property of amine and alcohol, as surfactant, there is good dispersibility, also as early strength agent, carry Early, the later strength of high cement；Cellulose water-keeping material can in concrete effective water conservation, and slowly discharged with aquation Part moisture, the aquation for cement provides water source, improves strength of cement, and cellulose water-keeping material also has model retention effect simultaneously, Reduce the gradual loss of concrete, also certain deferred action；Highly active catalyst, improves reaction rate, and will Oil-soluble unsaturation minor comonomer makes emulsion, carries out emulsion polymerization, polymerization speed is fast, conversion rate of products is high, and the present invention is significantly Degree improves the adaptability of concrete admixture, improves the operability of concrete, good to controlling concrete slump loss to have Good effect, improves agent on crack resistance of concrete freeze thawing performance.

Specific embodiment

With reference to specific embodiment, the present invention is done and supplement further, but limit the present invention never in any form.

Embodiment 1

Weigh the naphthalene sulfonic acid-formaldehyde condensation product of 10kg, the triethanolamine of 5kg, the methylcellulose of 5kg, the alkali metal of 1kg respectively Hydroxide, the sodium gluconate of 10kg, 10kg cellulose ether, 10kg animal waste hair-hydrolyzation thing is standby.

First in agitator tank, add water, by naphthalene sulfonic acid-formaldehyde condensation product, triethanolamine, methylcellulose, alkali metal hydrogen-oxygen Compound sodium gluconate, cellulose ether and animal waste hair-hydrolyzation thing add and stir 20min so as to dissolving is uniformly molten Liquid, discharging is packed.

Embodiment 2

Weigh the methyl-thionamic acid salt formaldehyde condensation products of 30kg, 10kg triisopropanolamine, the hydroxypropyl methyl fiber of 10kg respectively Element, the carbonate of 5kg, the sodium hexameta phosphate of 20kg, 10kg xanthan gum, 10kg dodecylbenzene sodium sulfonate is standby.

First in agitator tank, add water, by methyl-thionamic acid salt formaldehyde condensation products, triisopropanolamine, hydroxypropyl methyl fiber Element, carbonate, carbonate, sodium hexameta phosphate, xanthan gum and dodecylbenzene sodium sulfonate add and stir 20min so as to dissolve Uniformly solution, discharging is packed.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims

1. a kind of concrete composite water reducer it is characterised in that：Including following component by mass percentage：10～30 parts subtract Water preparation mother solution, 5～10 parts of alcamine compounds, 5～10 parts of cellulose water-keeping materials, 1～5 part of catalyst, 5～10 parts of slow settings are protected Mould agent, 5～10 parts of viscosity modifiers and 5～10 parts of air entraining agents.

2. concrete composite water reducer according to claim 1 it is characterised in that：Described water reducer mother solution is LOMAR PWA EINECS 246-676-2 first One or more of aldehyde condensate, aldehyde ketone sulfonation condensation substance, sulfamate formaldehyde condensation products mixture.

3. concrete composite water reducer according to claim 1 it is characterised in that：Described alcamine compound is three ethanol One of amine, triisopropanolamine, the different hydramine of diethanol list.

4. concrete composite water reducer according to claim 1 it is characterised in that：Described cellulose water-keeping material is methyl One of cellulose, hydroxypropyl methyl cellulose, hydroxyethylmethyl-cellulose.

5. concrete composite water reducer according to claim 1 it is characterised in that：Described catalyst is alkali metal hydroxide Thing, carbonate or bicarbonate.

6. concrete composite water reducer according to claim 1 it is characterised in that：Described slow setting plasticity-maintaining agent be citric acid or One or more mixture of sodium gluconate, sodium tripolyphosphate or sodium hexameta phosphate.

7. concrete composite water reducer according to claim 1 it is characterised in that：Described viscosity modifier is cellulose Ether, one or two mixture of xanthan gum.

8. concrete composite water reducer according to claim 1 it is characterised in that：Described air entraining agent is animal waste hair Hydrolysate, one or two mixture of dodecylbenzene sodium sulfonate.

9. the concrete composite water reducer described in claim 1 preparation method it is characterised in that：