CN103951304B - A kind of concrete intensifier and its preparation method and application - Google Patents

A kind of concrete intensifier and its preparation method and application Download PDF

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CN103951304B
CN103951304B CN201410150280.4A CN201410150280A CN103951304B CN 103951304 B CN103951304 B CN 103951304B CN 201410150280 A CN201410150280 A CN 201410150280A CN 103951304 B CN103951304 B CN 103951304B
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concrete
parts
concrete intensifier
water
intensifier
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CN201410150280.4A
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CN103951304A (en
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唐智荣
贺头贤
邓程鸿
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株洲宏信特种建材有限公司
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses a kind of concrete intensifier, its component primarily of following mass fraction and water formulated: Virahol amine mixture 30 ~ 40 parts; Trolamine 10 ~ 12 parts; Polyvalent alcohol 1 ~ 5 part and 3 ~ 5 parts, Sulfothiorine.Its preparation method comprises: first prepare Virahol amine mixture, then Virahol amine mixture, trolamine, polyvalent alcohol, Sulfothiorine and water are mixed, thin up, stirs and obtain concrete intensifier.Directly concrete intensifier and cement, breeze, flyash, water reducer, water, sand and stone are carried out mixing during application.Product of the present invention, to admixture strong adaptability, increases significantly late strength of concrete.

Description

A kind of concrete intensifier and its preparation method and application
Technical field
The invention belongs to technical field of concrete additives, particularly relate to a kind of concrete intensifier and its preparation method and application.
Background technology
Concrete is the building structural materials of human maximum ancestor, and it is through the simple and mechanical composite system mixed and stirred by gelling material (cement, flyash, breeze etc.), aggregate (comprising sand, stone etc.) and liquid medium (water, admixture etc.).Concrete is also the heterogeneous composite system of a kind of complexity, interfacial transition zone not between homophase affects concrete over-all properties most important factor, and concrete many quality problems (as undercapacity, crack etc.) are all interfacial transition zone defectiveness after all and produce.Although ready mixed concrete achieves significant progress, this " three is high " phenomenon of high cement consumption, high water usage amount, high water-cement ratio does not still have material alterations.Along with the continuous progress of science and technology, the especially use of admixture, make concrete in performance, obtain significant raising, cost has had obvious reduction; But in order to ensure concrete serviceability, with the effect of current admixture, in concrete, also have the cement of about 20% there is no abundant hydration reaction all the time, thus cannot improve concrete intensity further.
For this present situation, various countries experts and scholars have done a large amount of scientific researches in concrete intensifier, but do not obtain obvious progress all the time; Succeeding in developing of the 10 years up to date tensio-active agents due to new small molecule, just makes the research and development of concrete intensifier product obtain substantive breakthroughs.
Concrete intensifier adds in mixing concrete process together with concrete admixture, in order to improve concrete crushing strength, thus reaches the object reducing gel material content, save concrete production cost.
CN102838315A Chinese patent literature discloses a kind of concrete intensifier, it is made up of the polyacrylamide copolymer aqueous solution and Synergist S-421 95, the mass ratio that the polyacrylamide copolymer aqueous solution accounts for toughener is 80% ~ 95%, and the mass ratio that Synergist S-421 95 accounts for toughener is 5% ~ 20%; Synergist S-421 95 is made up of colloid silica, tri-isopropanolamine, tripoly phosphate sodium STPP and trolamine, wherein colloid silica accounts for the weight ratio of described toughener is 1% ~ 5%, the weight ratio that tri-isopropanolamine accounts for toughener is 0.5% ~ 3%, the weight ratio that tripoly phosphate sodium STPP accounts for toughener is 0.1% ~ 5%, and the weight ratio that trolamine accounts for toughener is 0.1% ~ 3%; The pH value 8 ~ 10 of toughener.Its compound method is: first Synergist S-421 95 raw material is mixed with Synergist S-421 95 solution with water in proportion; Then under agitation in the polyacrylamide copolymer aqueous solution, add Synergist S-421 95 solution, add rear continuation stirring more than 10 minutes, obtained concrete intensifier.
CN101397199A Chinese patent literature discloses a kind of cement grinding aid reinforcing agent, and it is formulated by the mass ratio of 1: 1.2 ~ 1.6: 0.1 ~ 0.5: 0.01 ~ 0.04 by alcamines, polyalcohols, amides, initiator etc.Hydramine and polyvalent alcohol mix in retort, stir lower control and react acid, in 100 DEG C ~ 110 DEG C reaction 2 ~ 6h; Add acid amides and initiator, adjusted to ph is 7 ~ 7.5, then stirring reaction 3 ~ 5h; Be neutralized to pH8 ~ 10 through alkali and obtain finished product.
From existing disclosed lot of documents, mainly there is following defect: 1) more for plain cement production process of existing toughener product, special relatively less for the toughener product of coagulation great soil group, but the material composition of cement and concrete and performance difference larger, if cement class toughener is directly indiscriminately imitated in concrete, often can there is very large change in effect, is difficult to the enhancing object reaching expection; 2) existing coagulation great soil group toughener and current concrete production admixture adaptability used are strong, and some tougheners adapt to naphthalene water reducer, but then almost do not have effect to poly carboxylic acid and aliphatic water reducing agent; 3) existing part coagulation great soil group toughener product not only prepares difficulty, and cost is high, need further raising to the improvement of concrete performance; 4) existing part coagulation great soil group toughener products material obtains difficulty, and the product feature of environmental protection is poor, easily causes environmental pollution, and the theory of this and green building runs in the opposite direction; 5) in addition, existing part concrete intensifier contains a certain amount of inorganic salt, there is certain risk to concrete weather resistance, and limited to late strength of concrete enhancement rate.
Therefore, how improve the formula of existing concrete toughener, raw material and preparation technology, be the technical barrier that those skilled in the art face for a long time always.
Summary of the invention
The technical problem to be solved in the present invention overcomes the deficiencies in the prior art, provide a kind of to admixture strong adaptability, late strength of concrete is increased significantly, the feature of environmental protection concrete intensifier that is main raw material with small molecules organic surface active agent.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of concrete intensifier, described concrete intensifier primarily of the component of following mass fraction and water formulated:
Described Virahol amine mixture forms primarily of tri-isopropanolamine, diisopropanolamine (DIPA) and monoisopropanolamine mixed preparing.
In above-mentioned concrete intensifier, preferably, in described Virahol amine mixture, the massfraction proportioning of tri-isopropanolamine, diisopropanolamine (DIPA) and monoisopropanolamine is as follows:
Tri-isopropanolamine 93.5% ~ 98.0%;
Diisopropanolamine (DIPA) 1.5% ~ 1.7%;
Monoisopropanolamine 0.3% ~ 5.0%.
In above-mentioned concrete intensifier, preferably, the mixture that described polyvalent alcohol is is main component with glycerine and glycol ether.
In above-mentioned concrete intensifier, preferably, the pH value of described concrete intensifier controls 8.5 ~ 10.5, and specific gravity control is 1.02 ~ 1.15, and solid content controls 6.0% ~ 8.0%.
As a total technical conceive, the present invention also provides a kind of preparation method of above-mentioned concrete intensifier, comprises following
(1) first described tri-isopropanolamine, diisopropanolamine (DIPA) and monoisopropanolamine are hybridly prepared into Virahol amine mixture by the massfraction proportioning of setting;
(2) above-mentioned Virahol amine mixture, trolamine, polyvalent alcohol, Sulfothiorine and the water prepared is stirred by following quality proportioning, be mixed with the concrete intensifier mother liquor that solid content is 33.0% ~ 44.0%;
(3) to thin up in the above-mentioned concrete intensifier mother liquor prepared, the addition of water and the mass ratio of mother liquor are 4 ~ 5:1, after stirring, obtain the concrete intensifier that solid content controls 6.0% ~ 8.0%.
As a total technical conceive, the present invention also provides a kind of application of above-mentioned concrete intensifier, mixed with cement, breeze, flyash, water reducer, water, sand and stone by described concrete intensifier, mass fraction proportioning during mixing is as follows:
The consumption of described concrete intensifier accounts for 0.4% ~ 0.6% of the total mass of cement, breeze and flyash.
In above-mentioned application, preferably, described breeze is S95 breeze; Described flyash is II level flyash, described sand be fineness modulus 1.6 ~ 3.0 river sand, described stone is the rubble of 5mm ~ 25mm.
In the technical scheme of the invention described above, creatively have employed Virahol amine mixture, it belongs to the tensio-active agent of small-molecular-weight, this Virahol amine mixture can carry out with macromolecular water reducer better with the use of, can under the prerequisite ensureing concrete workability, make admixture more effectively play its diminishing efficiency, thus create good condition for improving concrete strength.Monoisopropanolamine and diisopropanolamine (DIPA) is also comprised in preferred Virahol amine mixture, monoisopropanolamine and diisopropanolamine (DIPA) not only molecular weight are little, and be convenient to concrete intensifier and enter cement molecular grouping, and then by Virahol amine mixture and trolamine are mixed with Small molecular surfactant solution by a certain percentage, make to gather in concrete after the cement based finely-powdered minerals material fully do not reacted first disperses homogenizing and re-unite, what improve concrete mortar enriches degree, improve homogeneity and the adequacy of concrete hydrating reaction, thus improve concrete intensity on the whole.Simultaneously by the complexing chemical action of trolamine and cement Mineral Component, and the chemi-excitation effect of Sulfothiorine, improve concrete early strength; By tri-isopropanolamine and cement minerals composition C4AF(tetracalcium aluminoferrite) complexing chemical reaction, continue improve concrete later strength; By lattice distortion effect, accelerate hydration reaction, reduce hydrated product crystalline mineral quantity, improve jel product quantity, make secondary pozzolanic reaction more abundant, significantly improve concrete grout-bone interface adhesive structure character, be conducive to the lasting raising of intensity.
Compared with prior art, the invention has the advantages that: concrete intensifier of the present invention is that several micromolecular tensio-active agent (Virahol amine mixture and trolamine etc.) is formulated according to a certain percentage, significantly can improve concrete inner structure interfacial transition zone situation after using with admixture simultaneously, the concrete mechanical property of General Promotion, improve the intensity in concrete each length of time by a relatively large margin, thus reach the object reducing cement consumption in concrete.Product of the present invention is nontoxic, and to the harm of reinforcing bar non-corroding, have good adaptability with various cement and water reducer, market application foreground is wide.
Embodiment
For the ease of understanding the present invention, hereafter will do to describe more comprehensively, meticulously to the present invention in conjunction with preferred embodiment, but protection scope of the present invention is not limited to following specific embodiment.
Unless otherwise defined, hereinafter used all technical terms are identical with the implication that those skilled in the art understand usually.The object of technical term used herein just in order to describe specific embodiment is not be intended to limit the scope of the invention.
Apart from special instruction, all ingredients used in the present invention, raw material are can commodity commercially or can by the obtained product of known method.
Embodiment 1(cement water reducing agent selects polyocarboxy acid type high-performance water reducing agent):
A kind of concrete intensifier of the present invention, its component primarily of following mass fraction and water formulated:
Virahol amine mixture is formed by tri-isopropanolamine, diisopropanolamine (DIPA) and monoisopropanolamine mixed preparing.
In above-mentioned concrete intensifier, in Virahol amine mixture, the massfraction proportioning of tri-isopropanolamine, diisopropanolamine (DIPA) and monoisopropanolamine is as follows:
Tri-isopropanolamine 98.0%;
Diisopropanolamine (DIPA) 1.7%;
Monoisopropanolamine 0.3%.
In above-mentioned concrete intensifier, polyvalent alcohol specifically refers to the mixture of glycerine and glycol ether.
The preparation method of above-mentioned concrete intensifier, comprises the following steps:
(1) first tri-isopropanolamine, diisopropanolamine (DIPA) and monoisopropanolamine are hybridly prepared into Virahol amine mixture by the above-mentioned massfraction proportioning of setting;
(2) above-mentioned Virahol amine mixture, trolamine, polyvalent alcohol, Sulfothiorine and the water prepared is stirred by following quality proportioning, be mixed with into the concrete intensifier mother liquor that solid content is 39.0%;
(3) to thin up in the above-mentioned concrete intensifier mother liquor prepared, the addition of water and the mass ratio of mother liquor are 4:1, after stirring 15 minutes, obtain concrete intensifier, and pH value is 9.2, and proportion is 1.10, and solid content is 7.8%.
When the concrete intensifier of above-mentioned the present embodiment is applied, first concrete intensifier is mixed with cement, breeze, flyash, water reducer, water, sand and stone, quality proportioning during mixing (not add the product sample in contrast of concrete intensifier of the present invention) as shown in table 1 below:
Table 1: the formula (every cube of C30 concrete proportioning) of the present embodiment concrete intensifier product and control sample
By testing the function and strength of product of the present invention and control sample, test result is as shown in table 2 below.
Table 2: the performance (every cube of C30 concrete proportioning) of the present embodiment concrete intensifier product and control sample
Embodiment 2(cement water reducing agent selects naphthalenesulfonate high efficiency water reducing agent):
A kind of concrete intensifier of the present invention, its component primarily of following mass fraction and water formulated:
Virahol amine mixture is formed by tri-isopropanolamine, diisopropanolamine (DIPA) and monoisopropanolamine mixed preparing.
In above-mentioned concrete intensifier, in Virahol amine mixture, the massfraction proportioning of tri-isopropanolamine, diisopropanolamine (DIPA) and monoisopropanolamine is as follows:
Tri-isopropanolamine 95.5%;
Diisopropanolamine (DIPA) 1.5%;
Monoisopropanolamine 3.0%.
In above-mentioned concrete intensifier, polyvalent alcohol specifically refers to the mixture of glycerine and glycol ether.
The preparation method of above-mentioned concrete intensifier, comprises the following steps:
(1) first tri-isopropanolamine, diisopropanolamine (DIPA) and monoisopropanolamine are hybridly prepared into Virahol amine mixture by the above-mentioned massfraction proportioning of setting;
(2) above-mentioned Virahol amine mixture, trolamine, polyvalent alcohol, Sulfothiorine and the water prepared is stirred by following quality proportioning, be mixed with the concrete intensifier mother liquor that solid content is 39.3%;
(3) to thin up in the above-mentioned concrete intensifier mother liquor prepared, the addition of water and the mass ratio of mother liquor are 4:1, after stirring 15 minutes, obtain concrete intensifier.This concrete intensifier pH value is 9.5, and proportion is 1.12, and solid content is 7.85%.
When the concrete intensifier of above-mentioned the present embodiment is applied, first concrete intensifier is mixed with cement, breeze, flyash, water reducer, water, sand and stone, quality proportioning during mixing (not add the product sample in contrast of concrete intensifier of the present invention) as shown in table 3 below:
Table 3: the formula (every cube of C30 concrete proportioning) of the present embodiment concrete intensifier product and control sample
By testing the function and strength of product of the present invention and control sample, test result is as shown in table 4 below.
Table 4: the performance (every cube of C30 concrete proportioning) of the present embodiment concrete intensifier product and control sample
Embodiment 3(cement water reducing agent selects aliphatic high-efficiency water reducing agent):
A kind of concrete intensifier of the present invention, its component primarily of following mass fraction and water formulated:
Virahol amine mixture is formed by tri-isopropanolamine, diisopropanolamine (DIPA) and monoisopropanolamine mixed preparing.
In above-mentioned concrete intensifier, in Virahol amine mixture, the massfraction proportioning of tri-isopropanolamine, diisopropanolamine (DIPA) and monoisopropanolamine is as follows:
Tri-isopropanolamine 93.5%;
Diisopropanolamine (DIPA) 1.5%;
Monoisopropanolamine 5.0%.
In above-mentioned concrete intensifier, polyvalent alcohol specifically refers to the mixture of glycerine and glycol ether.
The preparation method of above-mentioned concrete intensifier, comprises the following steps:
(1) first tri-isopropanolamine, diisopropanolamine (DIPA) and monoisopropanolamine are hybridly prepared into Virahol amine mixture by the above-mentioned massfraction proportioning of setting;
(2) above-mentioned Virahol amine mixture, trolamine, polyvalent alcohol, Sulfothiorine and the water prepared is stirred by following quality proportioning, be mixed with the concrete intensifier mother liquor that solid content is 42.0%;
(3) to thin up in the above-mentioned concrete intensifier mother liquor prepared, the addition of water and the mass ratio of mother liquor are 4.5:1, after stirring 15 minutes, obtain concrete intensifier.Toughener pH value is 9.0, and proportion is 1.08, and solid content is 7.63%.
When the concrete intensifier of above-mentioned the present embodiment is applied, first concrete intensifier is mixed with cement, breeze, flyash, water reducer, water, sand and stone, quality proportioning during mixing (not add the product sample in contrast of concrete intensifier of the present invention) as shown in table 5 below:
Table 5: the formula (every cube of C30 concrete proportioning) of the present embodiment concrete intensifier product and control sample
By testing the function and strength of product of the present invention and control sample, test result is as shown in table 6 below.
Table 6: the performance (every cube of C30 concrete proportioning) of the present embodiment concrete intensifier product and control sample

Claims (6)

1. a concrete intensifier, is characterized in that, described concrete intensifier primarily of the component of following mass fraction and water formulated:
Virahol amine mixture 30 ~ 40 parts;
Trolamine 10 ~ 12 parts;
Polyvalent alcohol 1 ~ 5 part; With
3 ~ 5 parts, Sulfothiorine;
Described Virahol amine mixture forms primarily of tri-isopropanolamine, diisopropanolamine (DIPA) and monoisopropanolamine mixed preparing;
In described Virahol amine mixture, the massfraction proportioning of tri-isopropanolamine, diisopropanolamine (DIPA) and monoisopropanolamine is as follows:
Tri-isopropanolamine 93.5% ~ 98.0%;
Diisopropanolamine (DIPA) 1.5% ~ 1.7%;
Monoisopropanolamine 0.3% ~ 5.0%.
2. concrete intensifier according to claim 1, is characterized in that, the mixture that described polyvalent alcohol is is main component with glycerine and glycol ether.
3. concrete intensifier according to claim 1 and 2, is characterized in that, the pH value of described concrete intensifier controls 8.5 ~ 10.5, and specific gravity control is 1.02 ~ 1.15, and solid content controls 6.0% ~ 8.0%.
4. a preparation method for the concrete intensifier according to any one of claims 1 to 3, comprises the following steps:
(1) first described tri-isopropanolamine, diisopropanolamine (DIPA) and monoisopropanolamine are hybridly prepared into Virahol amine mixture by the massfraction proportioning of setting;
(2) above-mentioned Virahol amine mixture, trolamine, polyvalent alcohol, Sulfothiorine and the water prepared is stirred by following quality proportioning, be mixed with the concrete intensifier mother liquor that solid content is 33.0% ~ 44.0%;
Virahol amine mixture 30 ~ 40 parts;
Trolamine 10 ~ 12 parts;
Polyvalent alcohol 1 ~ 5 part; With
3 ~ 5 parts, Sulfothiorine; With
38 ~ 56 parts, water;
(3) to thin up in the above-mentioned concrete intensifier mother liquor prepared, the addition of water and the mass ratio of mother liquor are 4 ~ 5:1, after stirring, obtain the concrete intensifier that solid content controls 6.0% ~ 8.0%.
5. the application of the concrete intensifier according to any one of claims 1 to 3, it is characterized in that: mixed with cement, breeze, flyash, water reducer, water, sand and stone by described concrete intensifier, mass fraction proportioning during mixing is as follows:
Cement 200 parts;
Breeze 100 parts;
60 parts, flyash;
Water reducer 5 ~ 10 parts;
165 parts, water;
Sand 875 parts;
990 parts, stone;
The consumption of described concrete intensifier accounts for 0.4% ~ 0.6% of the total mass of cement, breeze and flyash.
6. application according to claim 5, is characterized in that: described breeze is S95 breeze; Described flyash is II level flyash, described sand be fineness modulus 1.6 ~ 3.0 river sand, described stone is the rubble of 5mm ~ 25mm.
CN201410150280.4A 2014-04-15 2014-04-15 A kind of concrete intensifier and its preparation method and application CN103951304B (en)

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CN104310839B (en) * 2014-09-30 2016-03-02 浙江宏鑫染化材料有限公司 Concrete intensifier and preparation method
CN104609787A (en) * 2015-01-12 2015-05-13 枞阳县天筑新型建筑材料有限公司 Quick-drying reinforced fireproof concrete and preparation method thereof
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CN105217990B (en) * 2015-10-26 2017-05-10 房立国 Concrete reinforcing agent and preparation method thereof
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CN107973540A (en) * 2017-12-27 2018-05-01 江苏百瑞吉新材料有限公司 A kind of concrete intensifier and preparation method thereof
CN109336443A (en) * 2018-09-26 2019-02-15 南通久拓混凝土有限公司 A kind of concrete potent dose and its preparation process
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