CN104310914A - Preparation method of precise expansion grouting material - Google Patents

Preparation method of precise expansion grouting material Download PDF

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Publication number
CN104310914A
CN104310914A CN201410527743.4A CN201410527743A CN104310914A CN 104310914 A CN104310914 A CN 104310914A CN 201410527743 A CN201410527743 A CN 201410527743A CN 104310914 A CN104310914 A CN 104310914A
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China
Prior art keywords
grouting
matching
mass percent
expanded polystyrene
polystyrene veneer
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CN201410527743.4A
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CN104310914B (en
Inventor
陈晓龙
郭一锋
李光球
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SUZHOU GUSU NOVEL BUILDING MATERIALS CO Ltd
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SUZHOU GUSU NOVEL BUILDING MATERIALS CO Ltd
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Abstract

The invention discloses a preparation method of a precise expansion grouting material, relating to a grouting material preparation technique and a grouting material age expansion technique. The grouting material disclosed by the invention is prepared from a cementing material, aggregate, an admixture, an inorganic compound, an organic compound and a high-molecular polymer according to mass percents and a certain mathematical relationship. The invention provides an age expansion technique of the grouting material under the mutual coordinated control of the components; and a chemical/physical concurrent means is utilized to control the hydration progress of the grouting material system, so that the grouting material has identical expansion ratio under the conditions of different temperature intervals.

Description

A kind of matching method of accurate expanded polystyrene veneer grouting material
Technical field
The present invention relates to engineering materials field, be specifically related to the matching method of a kind of standard expansion injection material had under the large temperature difference in civil engineering material, described grouting material can be used for the installation, engineering reinforcement, concrete repair etc. of main equipment and precision optical machinery.
Background technology
Grouting material is a kind of cement based engineering materials with certain fluidity, micro-expansibility, has the advantages that early strength is high, strength development is fast, is mainly used in the engineerings such as foot bolt fastening, equipment installation, beam reinforcing.At present, relevant unit both domestic and external all starts the R&D work focusing on grouting material, but mostly lays particular emphasis on the both direction such as early strength, high flowability of product, rarely have for expand accurate controlling party to product and technical study.In the gain in strength process of cement-based material, it is the process that cumulative volume constantly shrinks that hydrated cementitious forms CSH, expansion compensation material causes compensated waving very large by temperature and environmental Kuznets Curves, and existing expansion control techniques exists following technological difficulties: 1. grouting material intumescent material swells time of coagulation time irreversibility; 2. under high/low temperature, the differential expansion of expanding material causes grouting material internal fissure; 3. the permanent stability of grouting material apparent volume are poor.In a word, exploitation a kind of precisely grouting material and not temperature variant accurate expansion technique, can solve technological difficulties as above.
Summary of the invention
The object of this invention is to provide a kind of matching method of the accurate expanded polystyrene veneer grouting material that can accurately expand,
For achieving the above object, present invention employs following technical scheme:
A matching method for accurate expanded polystyrene veneer grouting material, is characterized in that, described grouting material is made up of following component by percent mass note:
The mass percent of gelling material is 30% ~ 40%, is defined as CM,
The mass percent of Additive is 5% ~ 10%, is defined as MA,
The mass percent of gathering materials is 40% ~ 57%, is defined as FA,
The mass percent of mineral compound is 1.0% ~ 3.0%, is defined as IC,
The mass percent of organic compound is 0.1% ~ 2.0%, is defined as OC,
The mass percent of high molecular polymer is 0.2% ~ 1.0%, is defined as MP.
The mass percent of above-mentioned each component also meets following relationship:
IC=(CM+MA)×(0.02~0.1);
OC=(CM+MA+FA×0.1)×(0.002~0.05);
MP=IC×0.5+CM×(0.01~0.1)。
Preferably, the mass percent of described each component also meets following relationship:
IC>OC,IC>MP,OC+MP≤IC,MP>CM×0.005。
Preferably, described gelling material is aluminosulfate cement, strength grade is not less than 42.5 general purpose portland cements and (CaSO 40.5H 2o) according to mass ratio 1:(5 ~ 50): the mixture that (0.02 ~ 0.5) mixes.
Preferably, described Additive is one or more in quenching metallurgical slag micro mist, flyash, silica flour, white carbon black, calcium sulphoaluminate, and the specific surface area of described adulterant is for being not less than 300m 2/ kg.
Preferably, gather materials described in for one or more in natural sand, machine-processed siliceous ore in sand form, silicon carbide, ceramic sand, uhligite and perovskite-like sand.
Preferably, the mass percent of the fineness that comprises of gathering materials described in and each fineness is as follows:
Preferably, described mineral compound is one or more in metal carbonate and ammino compound, metal sulfate and ammino compound thereof, metal nitrate and ammino compound thereof, metal sulphite, nonmetal nitrate, metal hydrogen phosphates, hexametaphosphate, thiosulphate, tripoly phosphate sodium STPP, urea.
Preferably, described organic compound is one or more in DL type tartrate and metal-salt thereof, at a low price Citrate trianion, Phenylsulfonic acid, Whitfield's ointment and salt thereof, amino acid and salt, gluconate, toxilic acid and maleic anhydride, monohydroxy-alcohol and derivative thereof, polyvalent alcohol, polyol derivative, aminosilane, methacryloxypropyl silane.
Preferably, described high molecular polymer is one or more in polyacrylic acid amide, ethylene vinyl acetate, polyacrylic ester, polyoxyethylene methacrylic acid, polycarboxylate, poly-how sulphur formaldehyde acid, methylcellulose gum, hydroxyethylmethyl-cellulose, Vltra tears, sulfonated lignin.
Inventive principle:
The conditions method in three is had in said ratio process,
I.e. Chemical Regulation: utilize the number of chemical composition in mineral compound, organic compound and high molecular polymer to be dissolved in mixing water and form the microscopic particles surface that ionic linkage and charge groups directly act on gelling material and adulterant, the accurate pH value that the mode of being wrapped up by chemical ion realizes grouting material system controls;
Physics regulates: by the ion component modifying admixture interface in mineral compound; And delay performance continuative improvement adulterant interface and surface of aggregate by high molecular polymer.
Intelligent balance regulates: by certain density coordination salt or the organic salt with sustained release utility, namely the mineral compound in component, realize the balance of grouting material slurry, this slurry balance comprises: ionic concn balance, system exothermic equilibrium, slurry solidification rate balance, thus suppresses the expansion character fluctuation because the engineering problems such as temperature variation, the fluctuation of water rate, environmental fluctuating produce.
Under the national standard environment in civil engineering material field (envrionment temperature 20 DEG C, humidity are not less than 50%), the expansion component of grouting material can play corresponding performance, reasonable effectiveness calculates the consumption of each chemical reagent, by the multidimensional control techniques of chemical-physical-intelligence, the time of coagulation realizing gelling system in the mix mixture after grouting material aquation is synchronous with the Bulking Time of expansion component; On the other hand, achieving involutory mixture alkalinity balance by getting involved the reagent with shock-absorbing capacity, greatly reducing the fluctuation of the speed of reaction because of outside atmosphere generation, realizing intelligent control, and then guarantee the permanent stability of the rear volume of grouting material solidification.
Invention advantage:
Hinge structure of the present invention has following beneficial effect:
(1) phylogenetic systematics has been carried out to the raw material of grouting material.Propose the mathematical relation of each system of raw material, environment for use first from the laboratory environment of standard to outside, got involved the reagent with buffering effect, realized the similar speed of reaction in differing temps interval, the grouting works for complexity provides accurate injection material and expansion control techniques.
(2) have employed chemical-physical expand through time control techniques.By to gelling material, adulterant and the active respectively process of gathering materials with excite, realize in 3 hours that expand, in 3 ~ 24 hours intervals respectively through time control.
(3) accurate expansion control techniques of the present invention has the volume stability of 28 days (d).Existing technical indicator mainly maintains 3 hours (h), 24 hours (h) that grouting material builds with 3 hours indexs such as (h) difference, 24 hours (h), but along with the aquation of gelling material is goed deep into, present the phenomenon that cured article volume continues retraction, the present invention is by the integrated design of expanding material and gelling material, hydrolysis product of cement CH and expanding material continuous action, the useful volume stability with maintaining grouting material cured article, the difference of the 28th day (d) and the 24th hour (h) is lower than 0.1%.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with case study on implementation to the present invention do further technical parameter describe, three kinds of embodiments of the present invention in table 1, the massfraction meter of total mass.
Table 1
the product performance of this invention are detected by regulation in standard GB/T/T 50448-2008 " cement-based grouting material utilisation technology specification "; Test the volumetric shrinkage of grouting material 28 days (d) according to JC/T 603-2004 " cement mortar dry shrinkage test method ", concrete each performance index are in table 2.
Table 2
As seen from the above embodiment, the grouting material product performance under this proportioning embodiment are stablized, and have substantially close test-results under different testing circumstances, and indices all can meet corresponding standard-required.
It is to be noted; as described above is only the embodiment explaining the present invention; not attempt does any restriction in form to the present invention according to this; under the premise without departing from the principles of the invention; some changes and retouching can also be made; have any change or the retouching of the relevant the present invention that does under identical invention spirit therefore all, these change or retouching is also considered as protection scope of the present invention.

Claims (9)

1. a matching method for accurate expanded polystyrene veneer grouting material, is characterized in that, described grouting material is made up of following component by percent mass note:
The mass percent of gelling material is 30% ~ 40%, is defined as CM;
The mass percent of Additive is 5% ~ 10%, is defined as MA
The mass percent of gathering materials is 40% ~ 57%, is defined as FA
The mass percent of mineral compound is 1.0% ~ 3.0%, is defined as IC
The mass percent of organic compound is 0.1% ~ 2.0%, is defined as OC
The mass percent of high molecular polymer is 0.2% ~ 1.0%, is defined as MP
The mass percent of above-mentioned each component also meets following relationship:
IC=(CM+MA)×(0.02~0.1);
OC=(CM+MA+FA)×(0.0~0.02);
MP=IC×0.5+CM×(0.01~0.1)。
2. the matching method of accurate expanded polystyrene veneer grouting material according to claim 1, is characterized in that, the mass percent of described each component also meets following relationship:
IC>OC,IC>MP,OC+MP≤IC,MP>CM×0.005。
3. the matching method of accurate expanded polystyrene veneer grouting material according to claim 1, is characterized in that, described gelling material is aluminosulfate cement, strength grade is not less than 42.5 general purpose portland cements and (CaSO 40.5H 2o) according to mass ratio 1:(5 ~ 50): the mixture that (0.02 ~ 0.5) mixes.
4. the matching method of accurate expanded polystyrene veneer grouting material according to claim 1, it is characterized in that, described Additive is one or more in quenching metallurgical slag micro mist, flyash, silica flour, white carbon black, calcium sulphoaluminate, and the specific surface area of described adulterant is for being not less than 300m 2/ kg.
5. the matching method of accurate expanded polystyrene veneer grouting material according to claim 1, is characterized in that, described in gather materials for one or more in natural sand, machine-processed siliceous ore in sand form, silicon carbide, ceramic sand, uhligite and perovskite-like sand.
6. the matching method of accurate expanded polystyrene veneer grouting material according to claim 5, is characterized in that, described in the gather materials mass percent of the fineness that comprises and each fineness as follows:
7. the matching method of accurate expanded polystyrene veneer grouting material according to claim 1, it is characterized in that, described mineral compound is one or more in metal carbonate and ammino compound, metal sulfate and ammino compound thereof, metal nitrate and ammino compound thereof, metal sulphite, nonmetal nitrate, metal hydrogen phosphates, hexametaphosphate, thiosulphate, tripoly phosphate sodium STPP, urea.
8. the matching method of accurate expanded polystyrene veneer grouting material according to claim 1, it is characterized in that, described organic compound is one or more in DL type tartrate and metal-salt thereof, at a low price Citrate trianion, Phenylsulfonic acid, Whitfield's ointment and salt thereof, amino acid and salt, gluconate, toxilic acid and maleic anhydride, monohydroxy-alcohol and derivative thereof, polyvalent alcohol, polyol derivative, aminosilane, methacryloxypropyl silane.
9. the matching method of accurate expanded polystyrene veneer grouting material according to claim 1, it is characterized in that, described high molecular polymer is one or more in polyacrylic acid amide, ethylene vinyl acetate, polyacrylic ester, polyoxyethylene methacrylic acid, polycarboxylate, poly-how sulphur formaldehyde acid, methylcellulose gum, hydroxyethylmethyl-cellulose, Vltra tears, sulfonated lignin.
CN201410527743.4A 2014-10-09 2014-10-09 Preparation method of precise expansion grouting material Active CN104310914B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107298553A (en) * 2016-12-02 2017-10-27 徐州中联混凝土有限公司 A kind of cement artware slurry
CN111003966A (en) * 2019-12-16 2020-04-14 河海大学 Sulfate-resistant low-alkali portland cement reinforcing agent and application thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0672752A (en) * 1992-08-24 1994-03-15 Denki Kagaku Kogyo Kk Cement composition
CN102180628A (en) * 2011-03-02 2011-09-14 中国科学院武汉岩土力学研究所 High-strength micro-expansion prestress anchoring grouting material and preparation method thereof
CN103265253A (en) * 2013-05-08 2013-08-28 沈阳建筑大学 High-performance grouting material for prefabricated building construction, and preparation method thereof
CN103539412A (en) * 2013-09-27 2014-01-29 江苏兆佳建材科技有限公司 Early-strength type cement-based grouting material and using method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0672752A (en) * 1992-08-24 1994-03-15 Denki Kagaku Kogyo Kk Cement composition
CN102180628A (en) * 2011-03-02 2011-09-14 中国科学院武汉岩土力学研究所 High-strength micro-expansion prestress anchoring grouting material and preparation method thereof
CN103265253A (en) * 2013-05-08 2013-08-28 沈阳建筑大学 High-performance grouting material for prefabricated building construction, and preparation method thereof
CN103539412A (en) * 2013-09-27 2014-01-29 江苏兆佳建材科技有限公司 Early-strength type cement-based grouting material and using method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107298553A (en) * 2016-12-02 2017-10-27 徐州中联混凝土有限公司 A kind of cement artware slurry
CN111003966A (en) * 2019-12-16 2020-04-14 河海大学 Sulfate-resistant low-alkali portland cement reinforcing agent and application thereof

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