Summary of the invention
Goal of the invention
The object of this invention is to provide the concrete surface sealing and curing process toughener that a kind of alkali content is low, for the surface treatment of concrete (especially containing flyash and/or Concrete With Ground Slag), concrete surface can be made more closely knit, structure is finer and close, significantly improves its hardness, impermeability, carbonization resistance and wear resistance.Described alkali content refers to the content of alkaloid substance in concrete surface sealing and curing process toughener, uses Na
2o adds up to equivalent to express, i.e. alkali number=Na
2o+0.658K
2o.
Summary of the invention
For solving prior art problem, the invention provides a kind of concrete surface sealing and curing process toughener, its mass percent consists of
Permeate agent 3%-8%
Promotor 20%-45%
Complexing agent 3%-5%
Dispersion agent 2%-5%
Nanoparticle active agent 4%-8%
Water 35%-60%
Described permeate agent is the mixture of aliphatic alcohol polyoxyvinethene phosphate and alkyl phosphate, the mass ratio of described aliphatic alcohol polyoxyvinethene phosphate and alkyl phosphate is (0.5-1.5): 1, fatty alcohol in described aliphatic alcohol polyoxyvinethene phosphate is the straight-chain monohydric alcohol of C12-C14, the number of repeat unit of the oxyethyl group in Soxylat A 25-7 segment is 2-5, and the alkyl in described alkyl phosphate is the straight chained alkyl of C12-C16;
Described promotor is the mixture of lithium silicate, Quilonum Retard, Sodium Nitrite, and wherein, the mass ratio of lithium silicate, Quilonum Retard and Sodium Nitrite is (0.5-1): (0.1-1): (2-5); Wherein Quilonum Retard, Sodium Nitrite are powdery, and lithium silicate is water-soluble potassium silicate, and modulus is 4.7-4.9, solid content 21%-23%;
Described complexing agent is the mixture of trolamine and di-alcohol monoisopropanolamine, and the mass ratio of described trolamine and di-alcohol monoisopropanolamine is 1: (0.5-2);
Described dispersion agent is melamine water reducing agent, and the solid content of described melamine water reducing agent is 28%-35%, and described melamine water reducing agent is the commercially available prod that concrete field is commonly used;
Described nanoparticle active agent is nano-calcium carbonate, and a kind of ultrafine solids powdered material, its granularity is between 0.01 ~ 0.1 μm.Due to the super-refinement of Nano particles of calcium carbonate, its crystalline structure and Electronic Structure change, and create quantum size effect, small-size effect, surface effects and macroscopic quantum effect that ordinary calcium carbonate does not have, can increase mechanical property well.Described nano-calcium carbonate is commercially available prod, this area.
Promotor, complexing agent, dispersion agent etc. can be distributed in concrete by permeate agent more evenly, aptly, make each active principle of concrete surface sealing and curing process toughener play its function more fully.Described permeate agent is preferably the aliphatic alcohol polyoxyvinethene phosphate of equal proportion mixing and the mixture of alkyl phosphate, more preferably described aliphatic alcohol polyoxyvinethene phosphate is Dodecyl Polyoxyethylene Ether phosphoric acid ester, and described alkyl phosphate is 1-isobutyl-3,5-dimethylhexylphosphoric acid.
Can there is Chemical bond with the part calcium hydroxide in concrete, small part free ca, magnesium ion etc. and react in promotor, make concrete more closely knit further; Sodium Nitrite is wherein reinforcing steel bar corrosion inhibitor, can penetrate in concrete and protect reinforcing bar, is also the toughener of cement simultaneously.In described concrete surface sealing and curing process toughener, the mass percent of promotor is preferably 20%-40%, is more preferably 21%-36%.It is 1: 1 according to mass ratio that described promotor is more preferably lithium silicate, Quilonum Retard, Sodium Nitrite: the mixture of (3.5-5), most preferably be lithium silicate, Quilonum Retard, Sodium Nitrite mass ratio be the mixture of 1: 1: 5.The quality of lithium silicate described in the present invention is in aqueous solution quality, and the quality of described promotor is also come in the quality of lithium silicate aqueous solution and other mixture quality sums.
Complexing agent can promote that the flyash in concrete and/or the further aquation of breeze generate hydrated calcium silicate gel effectively, impel the unhydrated cement granules aquation of part simultaneously, block the various pore structures in concrete equably, reach closely knit and filling effect, make concrete structure finer and close, water resistance is better.Described complexing agent is preferably trolamine (being called for short TEA) and di-alcohol monoisopropanolamine (vehicle economy IPA) mass ratio is the mixture of 1: 1.
Using melamine water reducing agent as dispersion agent, can improve the serviceability of concrete surface sealing and curing process toughener of the present invention, the dispersion agent mass percent in composition is the mass percent of water reducer solution.
Nm-class active calcium carbonate is nanoparticle active agent, can improve the rheological of system, improves and concrete sticking power, wear resistance and surface smoothness.
The present invention selects the raw materials such as alcamines complexing agent, inorganic salts promotor, dispersion agent, nanoparticle active agent to combine, not only alkali content is low, and sealing and curing effect have also been obtained very large lifting, for concrete surface treatment, concrete surface can be made more closely knit, structure is finer and close, significantly improves its hardness, impermeability, carbonization resistance and wear resistance.
Concrete surface sealing and curing process toughener of the present invention adopts ordinary method preparation to obtain, such as, described permeate agent, promotor, complexing agent, dispersion agent, nanoparticle active agent and water can be obtained concrete surface sealing and curing process toughener of the present invention by emulsification pretreatment after metering.During described emulsification pretreatment, rotating speed is preferably: 3160-13750rpm, is more preferably 8000rpm.Mulser processing speed is generally about 3000L/H, and 100kg material needs 1-3min.
Embodiment
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiments of the invention are described, but should be appreciated that these describe just as further illustrating the features and advantages of the invention instead of limitation of the present invention.
It is below the specific embodiment of the invention.The concrete grammar preparing described concrete surface sealing and curing process toughener is: namely described permeate agent, promotor, complexing agent, dispersion agent, nanoparticle active agent and water are obtained described concrete surface sealing and curing process toughener by emulsification pretreatment after metering.During described emulsification pretreatment, the rotating speed of mulser is 8000rpm, and mulser processing speed is 3000L/H.
Producer and the model of chemical substance involved by all embodiments are as follows:
Dodecyl Polyoxyethylene Ether phosphoric acid ester: Jiangsu Hai'an Petrochemical Plant produces, the number of repeat unit of the oxyethyl group that model is respectively in Soxylat A 25-7 segment corresponding to the product of MOA2P, MOA3P, MOA4P, MOA5P is respectively 2,3,4,5; Content is 96%;
1-isobutyl-3,5-dimethylhexylphosphoric acid: Jinan Hao Hua limited industrial company, purity 99%;
Quilonum Retard: Shanghai Ou Jin Industrial Co., Ltd., technical grade, content 99.0%;
Sodium Nitrite: Linzhou City, Zibo City Millennium Chemical Co., Ltd., technical grade, content 98%;
Trolamine: Shanghai Fu Jia Chemical Co., Ltd., technical grade, content: 85%;
Di-alcohol monoisopropanolamine: Shanghai Fu Jia Chemical Co., Ltd., technical grade, content: 85%;
Nano-calcium carbonate: Shandong Haize Nano Material Co., Ltd., model shengke-206.
Melamine water reducing agent: Suzhou makes the country prosperous chemical building material company limited, model: SUNBO SM (30%), solid content: 30%, and its specific performance is as follows:
Outward appearance: |
Colourless transparent liquid |
Solid content (%): |
30 |
PH value (20 DEG C) (30% liquid): |
7~9 |
Total alkali content (%): |
<8 |
Chloride ion content (%): |
<0.02 |
Surface tension (mn/m): |
71.5~72.0 |
Suggestion addition content: 1.5%-2.5% |
Water-reducing rate 15%-23% |
Lithium silicate: Jiangsu Guolian Technology Co., Ltd., model GHSL, its performance is as follows:
Embodiment 1: a kind of concrete surface sealing and curing process toughener, it is by the raw material of following mass parts, is prepared from by emulsification pretreatment:
Permeate agent 8%, wherein: Dodecyl Polyoxyethylene Ether phosphoric acid ester (MOA2P) 4 parts, 1-isobutyl-3,5-dimethylhexylphosphoric acid 4 parts;
Promotor 21%, wherein: lithium silicate 3 parts, Quilonum Retard 3 parts, Sodium Nitrite 15 parts;
Complexing agent 5%, wherein: trolamine 2.5 parts, di-alcohol monoisopropanolamine 2.5 parts;
Dispersion agent 5%, that is: melamine water reducing agent (solid content 30%) 5 parts;
Nanoparticle active agent 8%, that is: nano-calcium carbonate 8 parts;
Water 53%.
Embodiment 2: a kind of concrete surface sealing and curing process toughener, it is by the raw material of following mass parts, is prepared from by emulsification pretreatment:
Permeate agent 4%, wherein: Dodecyl Polyoxyethylene Ether phosphoric acid ester (MOA3P) 2 parts, 1-isobutyl-3,5-dimethylhexylphosphoric acid 2 parts;
Promotor 35%, wherein: lithium silicate 5 parts, Quilonum Retard 5 parts, Sodium Nitrite 25 parts;
Complexing agent 4%, wherein: trolamine 2 parts, di-alcohol monoisopropanolamine 2 parts;
Dispersion agent 3%, wherein: melamine water reducing agent (solid content 30%) 3 parts;
Nanoparticle active agent 6%, that is: nano-calcium carbonate 6 parts;
Water 47%.
Embodiment 3: a kind of concrete surface sealing and curing process toughener, it is by the raw material of following mass parts, is prepared from by emulsification pretreatment:
Permeate agent 3%, wherein: Dodecyl Polyoxyethylene Ether phosphoric acid ester (MOA4P) 1.5 parts, 1-isobutyl-3,5-dimethylhexylphosphoric acid 1.5 parts;
Promotor 36%, wherein: lithium silicate 6 parts, Quilonum Retard 6 parts, Sodium Nitrite 24 parts;
Complexing agent 3%, wherein: trolamine 1.5 parts, di-alcohol monoisopropanolamine 1.5 parts;
Dispersion agent 2%, melamine water reducing agent (solid content 30%) 2 parts;
Nanoparticle active agent 4%, that is: nano-calcium carbonate 4 parts;
Water 52%.
Embodiment 4: a kind of concrete surface sealing and curing process toughener, it is by the raw material of following mass parts, is prepared from by emulsification pretreatment:
Permeate agent 8%, wherein: Dodecyl Polyoxyethylene Ether phosphoric acid ester (MOA5P) 4 parts, tetradecyl phosphoric acid ester 4 parts;
Promotor 28%, wherein: lithium silicate 5 parts, Quilonum Retard 5 parts, Sodium Nitrite 18 parts;
Complexing agent 5%, wherein: trolamine 2.5 parts, di-alcohol monoisopropanolamine 2.5 parts;
Dispersion agent 5%, that is: melamine water reducing agent (solid content 30%) 5 parts;
Nanoparticle active agent 5%, that is: nano-calcium carbonate 5 parts;
Water 49%.
Embodiment 5: a kind of concrete surface sealing and curing process toughener, it is by the raw material of following mass parts, is prepared from by emulsification pretreatment:
Permeate agent 4%, wherein: tetradecyl alcohol polyoxyethylene ether phosphate (MOA5P) 2 parts, hexadecanyl phosphate 2 parts;
Promotor 25%, wherein: lithium silicate 4 parts, Quilonum Retard 4 parts, Sodium Nitrite 17 parts;
Complexing agent 5%, wherein: trolamine 2.5 parts, di-alcohol monoisopropanolamine 2.5 parts;
Dispersion agent 4%, that is: melamine water reducing agent (solid content 30%) 4 parts;
Nanoparticle active agent 6%, that is: nano-calcium carbonate 6 parts;
Water 56%.
According to the concrete surface sealing and curing process toughener of above 5 embodiments preparation, carry out Performance Detection according to GB/T50080-2002, GB/T 50107-2010, JTG E30-2005, JGJ/T23-2011, GB/T50082-2009 and CCES01-2004, concrete performance is as shown in table 1.Wherein:
Test set: Mohs' hardness instrument L013, concrete Anti-leakage instrument Q173, abrasion tester J017, concrete displacement flux instrument D036, reisilometer M202411;
Blank concrete and the concrete adopting face seal solidification treatment toughener to spray, all adopt following proportioning, and identical curing age:
Water: cement: flyash: breeze: sand: stone: admixture=175: 230: 80: 80: 780: 1060: 8; Unit: kg/m
3;
Wherein, cement is the PO42.5 cement that state, Yihe River Cement Group is produced, flyash is the II level flyash that Fei County power plant produces, breeze is the S95 level breeze that Qufu City Bang De building materials company limited produces, sand is the medium sand that Linyi Jin Tai concrete company limited produces, fineness modulus=2.6, rubble is that Linyi grand protocalcium industry company limited produces Wingdale rubble 5-25mm, and admixture is that Shandong Hongyi Technology Co., Ltd. produces polycarboxylate water-reducer HXB-PC.
According to the countries concerned and industry standard, the concrete sample of shaping corresponding size in laboratory, takes out it from standard curing room and naturally dries after normal curing 28d.Remove the floating ash of surface of test piece, after shaking up sealing and curing process toughener, apply sealing and curing treatment agent back and forth 3 ~ 5 times with hairbrush in surface of test piece, place 2 ~ 3 weeks at Indoor Natural after application, after application, start performance test during 28d.
As can be seen from Table 1, concrete surface sealing and curing process toughener of the present invention can improve concrete surface hardness, and improve concrete permeability resistance, wear resisting property, concrete strength significantly improves, and the displacement flux value of resisting chloride ion penetration obviously reduces.
Concrete performance after table 1 is coated with concrete surface sealing and curing process toughener compares