CN104261872B - A kind of compound concrete water evaporation inhibitor and application method thereof - Google Patents
A kind of compound concrete water evaporation inhibitor and application method thereof Download PDFInfo
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- CN104261872B CN104261872B CN201410481643.2A CN201410481643A CN104261872B CN 104261872 B CN104261872 B CN 104261872B CN 201410481643 A CN201410481643 A CN 201410481643A CN 104261872 B CN104261872 B CN 104261872B
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Abstract
The invention discloses a kind of compound concrete water evaporation inhibitor, it is characterized in that it is made up of one or more dewatering cationic compounds in any proportion and one or more hydrophobic anion compounds in any proportion, described dewatering cationic compound and hydrophobic anion compound are interacted by electrostatic attraction and form fine and close protective membrane, both mol ratios are 1:(10 ~ 0.1), during application, be mixed with a single phase soln or emulsion is sprayed on plastic concrete surface, thus significantly improve the water-retentivity of concrete water evaporation inhibitor, thus suppress the moisture evaporation of concrete plastic state, also improve high temperature resistance and the wind resistance of concrete water evaporation inhibitor simultaneously.
Description
Technical field
The present invention relates to concrete field, particularly a kind of compound concrete water evaporation inhibitor and application method thereof.
Background technology
Concrete pouring is an important step of concrete construction, and current concrete conventional maintenance is generally from after concrete surface condensation.If but not adding prevention, the quick dehydration of fresh concrete can cause cracking, and the most general situation is that moisture causes concrete plastic shrinkage cracks in surperficial rapid evaporation.The general vaporator rate of moisture at concrete surface of working as is more than 1.0kgm
-2h
-1just need to take sfgd..Some concrete, particularly containing volcanic ash or air-entraining concrete, under lower vaporator rate, owing to reducing precipitation rate, just likely produce plastic shrinkage cracks under lower vaporator rate.Except plastic shrinkage cracks, rapid steaming is returned and concrete surface can be caused to form sclerderm and play ash.By using windbreak to reduce wind speed, reduce concrete temperature or increase concrete time of coagulation (if construction conditions permission), these methods to control plastic shrinkage.Up to the present, the most effective way guarantees that concrete surface is moistening until complete the beginning of surface condensation and conventional maintenance, and the inhibitor adopting interim wet screening thing or the evaporation of sprinkling limiting moisture is most suitable method.
But, along with concrete structure becomes increasingly complex, use overcover to keep the more and more difficult of the moistening change of concrete surface.At present, the preparation of concrete water evaporation is suppressed mainly to be divided into: water glass type, paraffin wax emulsions, macromolecule emulsion, amphipathic fatty alcohol emulsion.The calcium hydroxide reaction of water glass type curing agent mainly in sodium silicate and cement slurry generates insoluble precipitated calcium silicate, thus suppresses the evaporation of moisture, but makes its water retention not high at concrete surface skewness due to gel of calcium silicate.Paraffin wax type water conservation aqua is when reaching higher water retention, and the concentration that general needs are higher, now paraffin forms firm hydrophobic layer at concrete surface, not easy to clean, thus affects concrete construction in later period.It is slow equally to there is film forming speed in the curing agent of macromolecule emulsion class, to there is after negative impact, film forming the not problem such as easy to clean to late strength of concrete.Amphipathic fatty alcohol emulsion, by forming insoluble molecular film on slurry surface, can moisture be effectively suppressed to evaporate, amphipathic small molecules acts on concrete surface does not simultaneously affect construction in later period without the need to process, but the problem of fatty alcohol is, the molecular film intensity that they are formed is not high, particularly in high temperature environments, easily there is expansion and affect its water-retentivity in the insoluble molecular film of simple fatty alcohol, the insoluble molecular film of aliphatic alcohols also lacks wind resistance.
Summary of the invention
Technical problem to be solved by this invention is the deficiency that exists for above-mentioned prior art and provides a kind of compound concrete water evaporation inhibitor, and the remarkable water-retentivity improving concrete water evaporation inhibitor, suppresses the moisture evaporation of concrete plastic state.
The technical scheme that the problem that the present invention is the above-mentioned proposition of solution adopts is:
A kind of compound concrete water evaporation inhibitor, it is made up of one or more dewatering cationic compounds in any proportion and one or more hydrophobic anion compounds in any proportion, and the mol ratio of described dewatering cationic compound and hydrophobic anion compound is 1:(10 ~ 0.1).
By such scheme, the general structure of described dewatering cationic compound is such as formula shown in 1 or formula 2, and in its Chinese style 1, A is selected from the alkyl of at least 14 carbon atoms or the perfluoroalkyl etc. of at least 7 carbon atoms, preferred saturated C
14~ C
22straight chained alkyl or C
7~ C
12linear perfluoroalkyl; B is selected from methylene radical, carbonyl, ester group etc.; R
1, R
2, R
3all be selected from hydrogen, methyl, ethyl, propyl group etc.; C is selected from the halide-ions such as chlorion or bromide anion; In formula 2, D is selected from the alkyl of at least 14 carbon atoms or the perfluoroalkyl etc. of at least 7 carbon atoms, preferred saturated C
14~ C
22straight chained alkyl or C
7~ C
12linear perfluoroalkyl; M is selected from the halide-ions such as chlorion or bromide anion.
By such scheme, the dewatering cationic compound meeting said structure general formula can be selected from aliphatic amide, fatty amide, alkyl quaternary ammonium salts, Fixanol etc.Particularly, described dewatering cationic compound can be selected from Tetradecyl Trimethyl Ammonium Bromide, cetyl trimethylammonium bromide, Cetyltrimethylammonium bromide, eicosyl trimethylammonium bromide, behenyl brometo de amonio, tetradecyl trimethyl ammonium chloride, palmityl trimethyl ammonium chloride, octadecyl trimethyl ammonium chloride, eicosyl trimethyl ammonium chloride, INCROQUAT TMC-80, tetradecyl pyridine bromide, brocide, bromination octadecylpyridinium, bromination eicosyl pyridine, bromination docosane yl pyridines, TPC, cetylpyridinium chloride, chlorination octadecylpyridinium, chlorination eicosyl pyridine, chlorination docosane yl pyridines etc.
By such scheme, as shown in Equation 3, wherein X is selected from the alkyl of at least 14 carbon atoms, the perfluoroalkyl of at least 7 carbon atoms to the general structure of described hydrophobic anion compound, preferred saturated C
14~ C
22straight chained alkyl or C
7~ C
12linear perfluoroalkyl; Y is selected from methylene radical, carbonyl, ether, thioether group etc.; E is selected from carboxyl, sulfonic group, sulfate, phosphate etc.; F is selected from hydrogen ion or the alkalimetal ion such as potassium ion, sodium ion.
X-Y-E
-f
+formula 3
By such scheme, the hydrophobic anion compound meeting said structure general formula can be selected from lipid acid, soap, alkylsulfonate, alkyl-sulphate, alkylphosphonic etc.Particularly, described hydrophobic anion compound can be selected from tetradecyl lipid acid, tetradecyl sodium soap, Palmiticacid, sodium palmitate, stearic acid, sodium stearate, 20 acid, 20 sour sodium, tetradecyl sodium sulfonate, sodium cetanesulfonate, sodium stearyl sulfonate, eicosyl sulfonate, docosyl sodium sulfonate, tetradecyl phosphoric acid, hexadecyl phosphoric acid, octadecyl phosphoric acid, eicosyl phosphoric acid, docosyl phosphoric acid, perfluoro hexyl sodium sulfonate, perfluor heptyl sodium sulfonate, perfluoro octyl sulfonic acid sodium, perfluor nonyl sodium sulfonate etc.
Under compound concrete water evaporation inhibitor of the present invention may be used for controlling concrete plastic state, moisture evaporates.During application, described compound concrete water evaporation inhibitor can be mixed with a single phase soln or emulsion is sprayed on plastic concrete surface, significantly can reduce the concrete surface moisture evaporation be under plastic state.Wherein, preparation temperature preferable temperature 50 ~ 80 DEG C, can dilute according to practical situation water during sprinkling, in the present invention, extension rate is 10 ~ 20 times.
By such scheme, during application, by mass percentage, it consists of a single phase soln prepared: compound concrete water evaporation inhibitor 0.1 ~ 5% of the present invention, organic solvent 40 ~ 60%, and surplus is water.Preferably, by mass percentage, it consists of a single phase soln prepared: compound concrete water evaporation inhibitor 3 ~ 5% of the present invention, organic solvent 40 ~ 45%, water 50 ~ 57%.Wherein, described organic solvent at least comprises the one in methyl alcohol, ethanol, propyl alcohol, butanols, ethylene glycol, Diethylene Glycol, diethylene glycol monomethyl ether, propylene glycol etc., and must comprise wherein a kind of lower alcohol dissolved each other with water.
By such scheme, during application, the emulsion prepared by mass percentage, it consists of: compound concrete water evaporation inhibitor 1 ~ 5% of the present invention, emulsifying agent 0.1 ~ 2%, assistant for emulsifying agent 0.1 ~ 1%, spreading agent 0.1 ~ 10%, thickening material 0.5 ~ 5%, defoamer 0.1 ~ 3%, surplus is water.Preferably, the emulsion prepared by mass percentage, it consists of: compound concrete water evaporation inhibitor 3 ~ 5% of the present invention, emulsifying agent 0.5 ~ 1.5%, assistant for emulsifying agent 0.3 ~ 0.6%, spreading agent 3 ~ 9%, thickening material 0.6 ~ 1.5%, defoamer 0.3 ~ 0.7%, water 80 ~ 90%.
Wherein, described emulsifying agent at least comprises the one in polyoxyethylene sorbitan fatty acid ester TWEEN Series, polyoxyethylene nonylphenol ether NP series, polyoxyethylene octylphenol ether serial, alkylphenol polyoxyethylene polyethenoxy ether series etc.; Described assistant for emulsifying agent at least comprises the one in sorbitan monooleate Span series; Described spreading agent at least comprises the one in sherwood oil, ethanol, propyl alcohol, Virahol; Described thickening material comprises the one in Xylo-Mucine, sodium alginate, welan gum; Described defoamer is selected from saturated phosphoric acid ester defoamer, silicone based defoamer, amides defoamer etc.
Compared with prior art, the invention has the beneficial effects as follows:
Concrete water evaporation inhibitor of the present invention is composited by adopting dewatering cationic compound and hydrophobic anion compound, wherein said hydrophobic anion compound and described dewatering cationic type compound are respectively with opposite charges, the two is interacted by electrostatic attraction and becomes the hybrid films of densification in concrete mortar surface-assembled, because strong electrostatic attraction effect makes the coherency of hybrid films and intensity all significantly strengthen, significantly improve the water-retentivity of concrete water evaporation inhibitor, thus suppress the moisture evaporation of concrete plastic state, also improve high temperature resistance and the wind resistance of concrete water evaporation inhibitor simultaneously.
Accompanying drawing explanation
Fig. 1 is the moisture loss of application examples and the graph of a relation of time that adopt compound concrete water evaporation inhibitor described in this embodiment in embodiment 1, and reference examples 1 and reference examples 2, the moisture loss of blank example and the graph of a relation of time.
Fig. 2 is the moisture loss of application examples and the graph of a relation of time that adopt compound concrete water evaporation inhibitor described in this embodiment in embodiment 2, and the moisture loss of reference examples 1 and blank example and the graph of a relation of time.
Fig. 3 is the moisture loss of application examples and the graph of a relation of time that adopt compound concrete water evaporation inhibitor described in this embodiment in embodiment 5, and the moisture loss of reference examples 1 and blank example and the graph of a relation of time.
Fig. 4 is the moisture loss of application examples and the graph of a relation of time that adopt compound concrete water evaporation inhibitor described in this embodiment in embodiment 8, and the moisture loss of reference examples 1 and blank example and the graph of a relation of time.
Embodiment
In order to understand the present invention better, illustrate content of the present invention further below in conjunction with embodiment, but the present invention is not only confined to the following examples.
Concrete plasticity moisture evaporation experiment in following embodiment is carried out with reference to JC901-2002 " cement concrete curing agent ".Embodiment 1,2 probe temperature is 38 DEG C, wind speed is 5m/s, and embodiment 5 probe temperature is 45 DEG C, wind speed is 5m/s, and embodiment 8 probe temperature is 38 DEG C, wind speed is 10m/s, and the probe temperature of other embodiments is 38 DEG C, wind speed is 0.5m/s.
Embodiment 1
A kind of compound concrete water evaporation inhibitor, it is made up of Cetyltrimethylammonium bromide and sodium stearyl sulfonate, and both mol ratios are 1:1.
Above-mentioned compound concrete water evaporation inhibitor is mixed with a single phase soln, is applied to moisture under controlling concrete plastic state and evaporates.A single phase soln of preparing, the mass percent of its each component is about: compound concrete water evaporation inhibitor 3.04% described in the present embodiment, ethanol 45.03%, water 51.93%.
Application examples: above-mentioned a single phase soln, take described compound concrete water evaporation inhibitor 7.48g (comprising 3.92g Cetyltrimethylammonium bromide, 3.56g sodium stearyl sulfonate), ethanol 111g, water 128g, at 50 DEG C, be uniformly mixed 30min, namely obtain a single phase soln described in the present embodiment.This single phase soln is diluted 10 times, utilizes spraying plant to be sprayed at plastic concrete surface, test the efficiency that it suppresses moisture evaporation.
Reference examples: the compound concrete water evaporation inhibitor during 1, the stearyl alcohol of the quality such as employing, Cetyltrimethylammonium bromide substitute described in the present embodiment a single phase soln respectively, example 1 and reference examples 2 in contrast, other conditions are all identical with the application examples of the present embodiment; 2, directly water conservancy spraying plant is sprayed at plastic concrete surface, as blank example.Test comparison example suppresses the efficiency of moisture evaporation respectively.
Acquired results as shown in fig. 1, as can be seen from Figure 1: adopt more separately the sample of stearyl alcohol, Cetyltrimethylammonium bromide to improve 19.5% and 25.5% respectively by the blend of the strong static behaviour sucking action moisture evaporation inhibiting rate after 6 hours.Therefore the successful of described compound concrete water evaporation inhibitor is adopted to be better than non-ionic type stearyl alcohol and cationic Cetyltrimethylammonium bromide.
Embodiment 2
A kind of compound concrete water evaporation inhibitor, it is made up of Cetyltrimethylammonium bromide and sodium stearate, and both mol ratios are 1:1.
Above-mentioned compound concrete water evaporation inhibitor is mixed with a single phase soln, is applied to moisture under controlling concrete plastic state and evaporates.A single phase soln of preparing, the mass percent of its each component is about: compound concrete water evaporation inhibitor 4.17% described in the present embodiment, ethanol 44.92%, water 50.91%.
Application examples: above-mentioned a single phase soln, take described compound concrete water evaporation inhibitor 6.96g (comprising 3.92g Cetyltrimethylammonium bromide, 3.04g sodium stearate), ethanol 75g, water 85g, at 50 DEG C, be uniformly mixed 30min, namely obtain a single phase soln described in the present embodiment.This single phase soln is diluted 15 times, utilizes spraying plant to be sprayed at plastic concrete surface, test the efficiency that it suppresses moisture evaporation.
Reference examples: the sodium stearate of the quality such as employing substitutes the compound concrete water evaporation inhibitor in a single phase soln described in the present embodiment, example 1 in contrast, and other conditions are all identical with the application examples of the present embodiment; 2, directly water conservancy spraying plant is sprayed at plastic concrete surface, as blank example.Test comparison example suppresses the efficiency of moisture evaporation respectively.
Acquired results as shown in Figure 2, as can be seen from Figure 2: described compound concrete water evaporation inhibitor water retention be comparatively used alone anionic sodium stearate and improve 21.3%.
Embodiment 3
A kind of compound concrete water evaporation inhibitor, it is made up of brocide and sodium stearyl sulfonate, and both mol ratios are 1:2.
Above-mentioned compound concrete water evaporation inhibitor is mixed with a single phase soln, is applied to moisture under controlling concrete plastic state and evaporates.A single phase soln of preparing, the mass percent of its each component is about: compound concrete water evaporation inhibitor 3.02% described in the present embodiment, Virahol 40.03%, water 56.95%.
Application examples: above-mentioned a single phase soln, take described compound concrete water evaporation inhibitor 5.35g (comprising 1.79g brocide, 3.56g sodium stearyl sulfonate), Virahol 71g, water 101g, at 50 DEG C, be uniformly mixed 30min, namely obtain a single phase soln described in the present embodiment.This single phase soln is diluted 10 times, utilizes spraying plant to be sprayed at plastic concrete surface, test the efficiency that it suppresses moisture evaporation.Measuring its 24h water retention according to JC901-2002 " cement concrete curing agent " is 95%.
Embodiment 4
A kind of compound concrete water evaporation inhibitor, it is made up of octadecyl trimethyl ammonium chloride and Palmiticacid, and both mol ratios are 1:0.5.
Above-mentioned compound concrete water evaporation inhibitor is mixed with a single phase soln, is applied to moisture under controlling concrete plastic state and evaporates.A single phase soln of preparing, the mass percent of its each component is about: compound concrete water evaporation inhibitor 3.00% described in the present embodiment, Virahol 45.00%, water 52.00%.
Application examples: by the proportioning of above-mentioned a single phase soln, take described compound concrete water evaporation inhibitor 4.76g (comprising 3.48 octadecyl trimethyl ammonium chloride, 1.28g Palmiticacid), Virahol 71.4g, water 82.5g, at 50 DEG C, be uniformly mixed 30min, namely obtain a single phase soln described in the present embodiment.This single phase soln is diluted 10 times, utilizes spraying plant to be sprayed at plastic concrete surface, test the efficiency that it suppresses moisture evaporation.Measuring its 24h water retention according to JC901-2002 " cement concrete curing agent " is 92%.
Embodiment 5
A kind of compound concrete water evaporation inhibitor, it is made up of octadecyl trimethyl ammonium chloride and stearic acid, and both mol ratios are 1:1.
Above-mentioned compound concrete water evaporation inhibitor is mixed with emulsion, is applied to moisture under controlling concrete plastic state and evaporates.The emulsion prepared, the mass percent of its each component is about: compound concrete water evaporation inhibitor 4.66% described in the present embodiment, emulsifying agent 1.40%, assistant for emulsifying agent 0.37%, spreading agent 3.69%, thickening material 0.74%, defoamer 0.59%, water 88.55%.
Application examples: by the proportioning of above-mentioned emulsion, take described compound concrete water evaporation inhibitor 6.32g (comprising 3.48 octadecyl trimethyl ammonium chloride, 2.84g stearic acid), emulsifying agent (TERGITOL (TM) NP-40) 1.90g, assistant for emulsifying agent (sorbitan oleate Arlacel-80) 0.5g, spreading agent (Virahol) 5g, thickening material (Xylo-Mucine) 1g, defoamer tributyl phosphate 0.8g, water 120g, at 60 DEG C, be uniformly mixed 30min, namely obtain the emulsion described in the present embodiment.This emulsion is diluted 10 times, utilizes spraying plant to be sprayed at plastic concrete surface, test the efficiency that it suppresses moisture to evaporate 45 DEG C time.
Reference examples: the stearyl alcohol of the quality such as employing substitutes the compound concrete water evaporation inhibitor in the emulsion described in the present embodiment, example 1 in contrast, and other conditions are all identical with the application examples of the present embodiment; 2, directly water conservancy spraying plant is sprayed at plastic concrete surface, as blank example.Test comparison example suppresses the efficiency of moisture evaporation 45 DEG C time respectively.
Acquired results as shown in Figure 3, known, under hot environment, single component sample moisture evaporation rejection ability reduces obviously, non-ionic type stearyl alcohol water retention is adopted to be reduced to 36.4%, and the compound concrete water evaporation inhibitor adopting octadecyl trimethyl ammonium chloride and stearic acid to be composited Be very effective under high temperature (45 DEG C), its water retention still can reach 63.6%, has good high temperature resistant property.
Embodiment 6
A kind of compound concrete water evaporation inhibitor, it is made up of octadecyl trimethyl ammonium chloride and sodium stearyl sulfate, and both mol ratios are 1:0.5.
Above-mentioned compound concrete water evaporation inhibitor is mixed with emulsion, is applied to moisture under controlling concrete plastic state and evaporates.The emulsion prepared, the mass percent of its each component is about: compound concrete water evaporation inhibitor 3.75% described in the present embodiment, emulsifying agent 1.05%, assistant for emulsifying agent 0.42%, spreading agent 3.52%, thickening material 0.70%, defoamer 0.56%, water 90.00%.
Application examples: by the proportioning of above-mentioned emulsion, take described compound concrete water evaporation inhibitor 5.34g (comprising 3.48 octadecyl trimethyl ammonium chloride, 1.86g Sodium palmityl sulfate), emulsifying agent (TERGITOL (TM) NP-40) 1.5g, assistant for emulsifying agent (sorbitan oleate) 0.6g, spreading agent (Virahol) 5g, thickening material welan gum 1g, defoamer tributyl phosphate 0.8g, water 128g, at 50 DEG C, be uniformly mixed 30min, namely obtain the emulsion described in the present embodiment.This emulsion is diluted 10 times, utilizes spraying plant to be sprayed at plastic concrete surface, test the efficiency that it suppresses moisture evaporation.Measuring its 24h water retention according to JC901-2002 " cement concrete curing agent " is 93%.
Embodiment 7
A kind of compound concrete water evaporation inhibitor, it is made up of Cetyltrimethylammonium bromide and Sodium palmityl sulfate, and both mol ratios are 1:1.
Above-mentioned compound concrete water evaporation inhibitor is mixed with emulsion, is applied to moisture under controlling concrete plastic state and evaporates.The emulsion prepared, the mass percent of its each component is about: compound concrete water evaporation inhibitor 4.80% described in the present embodiment, emulsifying agent 0.67%, assistant for emulsifying agent 0.54%, spreading agent 5.38%, thickening material 0.67%, defoamer 0.54%, water 87.4%.
Application examples: by the proportioning of above-mentioned emulsion, take described compound concrete water evaporation inhibitor 7.14g (comprising 3.92 Cetyltrimethylammonium bromides, 3.22g Sodium palmityl sulfate), emulsifying agent (TERGITOL (TM) NP-60) 1.0g, assistant for emulsifying agent (sorbitan oleate) 0.8g, spreading agent (Virahol) 8g, thickening material sodium alginate 1g, defoamer tributyl phosphate 0.8g, water 130g, at 50 DEG C, be uniformly mixed 30min, namely obtain the emulsion described in the present embodiment.This emulsion is diluted 10 times, utilizes spraying plant to be sprayed at plastic concrete surface, test the efficiency that it suppresses moisture evaporation.Measuring its 24h water retention according to JC901-2002 " cement concrete curing agent " is 95%.
Embodiment 8
A kind of compound concrete water evaporation inhibitor, it is made up of cetyl trimethylammonium bromide and sodium stearate, and both mol ratios are 1:1.
Above-mentioned compound concrete water evaporation inhibitor is mixed with emulsion, is applied to moisture under controlling concrete plastic state and evaporates.The emulsion prepared, the mass percent of its each component is about: compound concrete water evaporation inhibitor 4.67% described in the present embodiment, emulsifying agent 0.84%, assistant for emulsifying agent 0.42%, spreading agent 4.20%, thickening material 0.70%, defoamer 0.35%, water 88.82%.
Application examples: by the proportioning of above-mentioned emulsion, take described compound concrete water evaporation inhibitor 6.68g (comprising 3.64 cetyl trimethylammonium bromides, 3.04g sodium stearate), emulsifying agent (TERGITOL (TM) NP-40) 1.2g, assistant for emulsifying agent (sorbitan oleate) 0.6g, spreading agent (Virahol) 6g, thickening material sodium alginate 1g, defoamer tributyl phosphate 0.5g, water 127g, at 50 DEG C, be uniformly mixed 30min, namely obtain the emulsion described in the present embodiment.This emulsion is diluted 10 times, utilizes spraying plant to be sprayed at plastic concrete surface, the efficiency suppressing moisture to evaporate under testing its 10m/s wind speed.
Reference examples: the hexadecanol of the quality such as employing substitutes the compound concrete water evaporation inhibitor in the emulsion described in the present embodiment, example 1 in contrast, and other conditions are all identical with the application examples of the present embodiment; 2, directly water conservancy spraying plant is sprayed at plastic concrete surface, as blank example.The efficiency suppressing moisture to evaporate under test comparison example 10m/s wind speed respectively.
Acquired results as shown in Figure 4, it is known: when wind speed raises as 10m/s, in reference examples 1, the rejection ability of moisture evaporation obviously weakens, its 6 hours water retentions are only 20.1%, and compound concrete water evaporation inhibitor moisture evaporation rejection ability described in the present embodiment reduces less, comparatively reference examples 1 improves 19.6%, and wind resistance is obviously better than the above two.
Embodiment 9
A kind of compound concrete water evaporation inhibitor, it is made up of Tetradecyl Trimethyl Ammonium Bromide and positive 20 acid, and both mol ratios are 1:0.3.
Above-mentioned compound concrete water evaporation inhibitor is mixed with emulsion, is applied to moisture under controlling concrete plastic state and evaporates.The emulsion prepared, the mass percent of its each component is about: compound concrete water evaporation inhibitor 4.44% described in the present embodiment, emulsifying agent 0.83%, assistant for emulsifying agent 0.41%, spreading agent 8.27%, thickening material 1.03%, defoamer 0.62%, water 84.4%.
Application examples: by the proportioning of above-mentioned emulsion, take described compound concrete water evaporation inhibitor 4.3g (comprising 3.36 Tetradecyl Trimethyl Ammonium Bromide, positive 20 acid of 0.94g), emulsifying agent (TERGITOL (TM) NP-60) 0.8g, assistant for emulsifying agent (sorbitan oleate) 0.4g, spreading agent (Virahol) 8g, thickening material Xylo-Mucine 1g, defoamer tributyl phosphate 0.6g, water 81.7g, at 50 DEG C, be uniformly mixed 30min, namely obtain the emulsion described in the present embodiment.This emulsion is diluted 10 times, utilizes spraying plant to be sprayed at plastic concrete surface, test the efficiency that it suppresses moisture evaporation.Measuring its 24h water retention according to JC901-2002 " cement concrete curing agent " is 94%.
Embodiment 10
A kind of compound concrete water evaporation inhibitor, it is made up of dewatering cationic compound cetyl trimethylammonium bromide, octadecyl trimethyl ammonium chloride and hydrophobic anion compound stearic acid, sodium cetanesulfonate, and the ratio of the amount of substance that total amount of substance of two kinds of dewatering cationic compounds is total with hydrophobic anion compound is 1:1.
Above-mentioned compound concrete water evaporation inhibitor is mixed with emulsion, is applied to moisture under controlling concrete plastic state and evaporates.The emulsion prepared, the mass percent of its each component is about: compound concrete water evaporation inhibitor 4.8% described in the present embodiment, emulsifying agent 0.83%, assistant for emulsifying agent 0.37%, spreading agent 7.35%, thickening material 1.1%, defoamer 0.74%, water 84.8%.
Application examples: by the proportioning of above-mentioned emulsion, take described compound concrete water evaporation inhibitor 5.22g (comprising 1.46g cetyl trimethylammonium bromide, 1.39g octadecyl trimethyl ammonium chloride, 1.71g stearic acid, 0.66g sodium cetanesulfonate), emulsifying agent (TERGITOL (TM) NP-60) 0.9g, assistant for emulsifying agent (sorbitan oleate) 0.4g, spreading agent (Virahol) 8g, thickening material Xylo-Mucine 1.2g, defoamer tributyl phosphate 0.8g, water 92.3g, 30min is uniformly mixed at 50 DEG C, namely the emulsion described in the present embodiment is obtained.This emulsion is diluted 15 times, utilizes spraying plant to be sprayed at plastic concrete surface, test the efficiency that it suppresses moisture evaporation.Measuring its 24h water retention according to JC901-2002 " cement concrete curing agent " is 92%.
In addition to the implementation, compound concrete water evaporation inhibitor of the present invention, it is made up of one or more dewatering cationic compounds in any proportion and one or more hydrophobic anion compounds in any proportion, as long as the ratio of the amount of substance that total amount of substance of described dewatering cationic compound is total with hydrophobic anion compound is 1:(10 ~ 0.1), be equally also applicable to the technical program.
In addition to the implementation, dewatering cationic compound can also adopt as eicosyl trimethylammonium bromide, behenyl brometo de amonio, chlorination eicosyl pyridine, chlorination docosane yl pyridines, bromination eicosyl pyridine, bromination docosane yl pyridines etc., as long as meet general formula (1) and (2); Hydrophobic anion compound can also adopt as 20 sour sodium, eicosyl phosphoric acid, docosyl phosphoric acid, perfluor heptyl sodium sulfonate, perfluor nonyl sodium sulfonate etc., as long as meet general formula (3), is equally also applicable to the technical program.
In sum; adopt the water evaporation inhibitor that cation hydrophobic compound and negatively charged ion hydrophobic compound are composited; due to the electrostatic interaction that negative ions is strong; form protective membrane compactness better; and protective membrane is not easily expanded under high temperature and strong wind atmosphere, there is good high temperature resistance and wind resistance.
The above is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and without departing from the concept of the premise of the invention, can also make some improvement and conversion, these all belong to protection scope of the present invention.
Claims (6)
1. a compound concrete water evaporation inhibitor, it is characterized in that it is made up of one or more dewatering cationic compounds in any proportion and one or more hydrophobic anion compounds in any proportion, the mol ratio of described dewatering cationic compound and hydrophobic anion compound is 1:(10 ~ 0.1);
The general structure of described dewatering cationic compound is such as formula shown in 1 or formula 2, and in its Chinese style 1, A is selected from the alkyl of at least 14 carbon atoms or the perfluoroalkyl of at least 7 carbon atoms; B is selected from methylene radical, carbonyl, ester group; R
1, R
2, R
3all be selected from hydrogen, methyl, ethyl or propyl group; C is selected from halogen; In formula 2, D is selected from the alkyl of at least 14 carbon atoms or the perfluoroalkyl of at least 7 carbon atoms; M is selected from halogen;
X-Y-E
-f
+formula 3
As shown in Equation 3, wherein X is selected from the alkyl of at least 14 carbon atoms, the perfluoroalkyl of at least 7 carbon atoms to the general structure of described hydrophobic anion compound; Y is selected from methylene radical, carbonyl, ether, thioether group; E is selected from carboxyl, sulfonic group, sulfate, phosphate; F is selected from hydrogen or basic metal.
2. a kind of compound concrete water evaporation inhibitor according to claim 1, it is characterized in that described dewatering cationic compound is selected from cetyl trimethylammonium bromide, Cetyltrimethylammonium bromide, eicosyl trimethylammonium bromide, behenyl brometo de amonio, palmityl trimethyl ammonium chloride, octadecyl trimethyl ammonium chloride, eicosyl trimethyl ammonium chloride, INCROQUAT TMC-80, brocide, bromination octadecylpyridinium, bromination eicosyl pyridine, bromination docosane yl pyridines, cetylpyridinium chloride, chlorination octadecylpyridinium, chlorination eicosyl pyridine, one or more mixtures in any proportion in chlorination docosane yl pyridines.
3. a kind of compound concrete water evaporation inhibitor according to claim 1, is characterized in that described hydrophobic anion compound to be selected from Palmiticacid, sodium palmitate, stearic acid, sodium stearate, 20 acid, 20 sour sodium, sodium cetanesulfonate, sodium stearyl sulfonate, eicosyl sulfonate, docosyl sodium sulfonate, hexadecyl phosphoric acid, octadecyl phosphoric acid, eicosyl phosphoric acid, docosyl phosphoric acid one or more mixtures in any proportion.
4., according to the application method of the compound concrete water evaporation inhibitor one of claim 1-3 Suo Shu, when it is characterized in that application, described compound concrete water evaporation inhibitor is mixed with a single phase soln or emulsion is sprayed on plastic concrete surface.
5. the application method of compound concrete water evaporation inhibitor according to claim 4, it is characterized in that described a single phase soln by mass percentage, it consists of: described compound concrete water evaporation inhibitor 0.1 ~ 5%, organic solvent 40 ~ 60%, and surplus is water; Wherein, described organic solvent at least comprises a kind of lower alcohol dissolved each other with water.
6. the application method of compound concrete water evaporation inhibitor according to claim 4, it is characterized in that described emulsion by mass percentage, it consists of: described compound concrete water evaporation inhibitor 1 ~ 5%, emulsifying agent 0.1 ~ 2%, assistant for emulsifying agent 0.1 ~ 1%, spreading agent 0.1 ~ 10%, thickening material 0.5 ~ 5%, defoamer 0.1 ~ 3%, surplus is water.
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| CN110528490A (en) * | 2019-09-19 | 2019-12-03 | 广州铭汇建设工程有限公司 | Treatment Methods of Soft Ground |
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| CN105294161B (en) * | 2015-12-07 | 2018-10-16 | 江西洪屏抽水蓄能有限公司 | A kind of unsaturated siloxane base phosphate lotion curing compound and preparation method thereof |
| CN105503019B (en) * | 2015-12-29 | 2018-05-04 | 江苏苏博特新材料股份有限公司 | The preparation method of concrete water evaporation inhibitor |
| CN108341619B (en) * | 2018-05-03 | 2020-07-07 | 黄河勘测规划设计研究院有限公司 | Internal and external water migration inhibitor for concrete |
| CN116535121A (en) * | 2023-03-30 | 2023-08-04 | 浙江交工金筑交通建设有限公司 | Ore production improver for dry method sand |
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| CN1800074A (en) * | 2006-01-09 | 2006-07-12 | 江苏博特新材料有限公司 | Moisture steaming blocking agent for plastic concrete |
| CN101139184A (en) * | 2007-08-20 | 2008-03-12 | 中交四航工程研究院有限公司 | Cracking-proof curing agent for preventing concrete cracking and production method and uses thereof |
| CN102503541A (en) * | 2011-09-23 | 2012-06-20 | 江苏博特新材料有限公司 | Concrete water evaporation inhibitor with shrinkage function and preparation method thereof |
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| CN101139184A (en) * | 2007-08-20 | 2008-03-12 | 中交四航工程研究院有限公司 | Cracking-proof curing agent for preventing concrete cracking and production method and uses thereof |
| CN102503541A (en) * | 2011-09-23 | 2012-06-20 | 江苏博特新材料有限公司 | Concrete water evaporation inhibitor with shrinkage function and preparation method thereof |
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| CN110528490A (en) * | 2019-09-19 | 2019-12-03 | 广州铭汇建设工程有限公司 | Treatment Methods of Soft Ground |
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