CN102936114A - Magnesium acrylate-superfine cement compounded grouting material and preparation method thereof - Google Patents
Magnesium acrylate-superfine cement compounded grouting material and preparation method thereof Download PDFInfo
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- CN102936114A CN102936114A CN2012103881859A CN201210388185A CN102936114A CN 102936114 A CN102936114 A CN 102936114A CN 2012103881859 A CN2012103881859 A CN 2012103881859A CN 201210388185 A CN201210388185 A CN 201210388185A CN 102936114 A CN102936114 A CN 102936114A
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- superfine cement
- magnesium acrylate
- trolamine
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Abstract
The present invention discloses a magnesium acrylate-superfine cement compounded grouting material and a preparation method thereof. The grouting material is provided for stratum reinforcement in a construction process. Main materials of the grouting material comprise, by weight, 100 parts of superfine cement, 10-30 parts of a magnesium acrylate aqueous solution, 30-70 parts of water, 0.1-0.5 part of trolamine, 0.5-1 part of sodium chloride, 1-3 parts of sodium nitrite, and 0.01-0.05 part of sodium persulfate. According to the present invention, the polymer and the superfine cement are compounded to obtain the quick setting high strength grouting material, wherein the material has advantages of good groutability, adjustable setting time, high slurry consolidating strength and the like; and the magnesium acrylate-superfine cement compounded grouting material has wide application prospects in loose stratum consolidation breaking, foundation improvement, building foundation reinforcement and other fields.
Description
Technical field
The present invention relates to material of construction, especially the engineering consolidation by grouting technical field of material take acrylate-superfine cement as major ingredient.
Background technology
The application of consolidation by grouting material in engineering is increasingly extensive, especially under the loose formation condition of fragmentation, adopts injection material to carry out stratum consolidation or improvement is common means.Bad the tending to of formation condition brought certain difficulty to engineering construction,, distortion on the low side such as stratum bearing capacity and self-stable ability excessively threatens to structural safety, usually need to take special measure to reinforce or process, thereupon can be so that construction period and construction costs increase.Taking injection material that loose and broken formation is reinforced then is a kind of comparatively effective means, can improve the performance index such as cohesion, sliding angle on stratum, so that its bearing capacity and self-stable ability increase, for engineering construction creates favorable conditions.
The injection material kind that is suitable in the engineering at present is more, divides with material type to be mainly chemical grouting material and cement grouting material.The characteristics of chemical grouting material are that viscosity is low, can pour into fine crack, setting time all can be regulated from several seconds to tens hours, but the price of chemical grouting material is high, prescription is complicated, mostly have certain toxicity (such as acrylamide, cyanogen solidifying etc.), produce simultaneously and the trash discharge of constructing also may cause the problems such as environmental pollution, so the restriction that chemical grouting material is subject in application is also more.Nonmetal injection material take ortho-water mud and modifying common cement-based grouting material as representative has that cost is low, the source is wide, intensity is high, good endurance, the advantage such as easy to use, but also have some defectives simultaneously, as: the Portland cement grain diameter is larger, coarse particles is more, and concrete castability is not as chemical grouting material; When water cement ratio is larger, the poor stability of slurries, easily bleed returns dense; With bleed, solid volume shrinks in the time of sclerosis, and sclerosis calculus and the cohesive strength of being filled with matrix are descended; The most important thing is that the Portland cement hydration time is long, gain in strength is slow.
The composite grouting material that polymkeric substance and Portland cement form is also necessarily used in engineering at present, this class material has the advantages such as good flowability, set time can be controlled, the solidification intensity high permeability resistant is good, moderate, has preferably development and application prospect.But this class material still has the limited shortcoming of concrete castability because what adopt is Portland cement, and the suitability under or the formation condition that rock cranny is thinner lower in some perviousness still is subject to certain limitation.Therefore adopt the superfine cement portland cement replacement, mixes forming composite grouting material to improve the performance of this class injection material with the polymkeric substance that is fit to and auxiliary agent, improve its engineering adaptability, to improveing or reinforce significant in the stratum of engineering.The fields such as the present invention is fixed at broken scall, foundation improvement, building foundation reinforcing are with a wide range of applications.
Summary of the invention
Above deficiency in view of prior art, the objective of the invention is to develop a kind of Magnesium Acrylate Prepared-superfine cement composite grouting material, make it to overcome the shortcoming of prior art, and make it to have good fluidity, set time is controlled, solidification intensity is high, impermeability is good and moderate advantage.
The present invention realizes by following means:
Magnesium Acrylate Prepared-superfine cement composite grouting material, in construction process, be used for stratum consolidation, its major ingredient is comprised of superfine cement, the Magnesium Acrylate Prepared aqueous solution, water, trolamine, sodium-chlor, Sodium Nitrite, Sodium Persulfate, and each composition weight proportioning is: superfine cement: 36%～40% Magnesium Acrylate Prepared aqueous solution: water: trolamine: sodium-chlor: Sodium Nitrite: Sodium Persulfate=100: 10～30: 30～70: 0.1～0.5: 0.5～1: 1～3: 0.01～0.05.
The present invention also aims to, for described Magnesium Acrylate Prepared-superfine cement composite grouting material provides suitable preparation method, the means that adopt are: add entry, trolamine, sodium-chlor, Sodium Nitrite, Sodium Persulfate by formula rate in the Magnesium Acrylate Prepared aqueous solution, after the stirrer high speed mixes, mix with quantitative superfine cement again.
Adopt the present invention, with the quick setting and high strength injection material that selected polymkeric substance and superfine cement are composited, have that concrete castability is good, time of coagulation is adjustable, the slurries set strength high, and rock and a Concrete Bond Strength advantages of higher.The fields such as the present invention is fixed at broken scall, foundation improvement, building foundation reinforcing are with a wide range of applications.Compare with other injection materials, this material has following technical characterstic: 1) the slurries set strength is high, and the set strength behind the grouting 60min can reach more than the 10MPa; 2) concrete castability is good, and being applicable to Fracture Width is 10 less than 0.2mm～0.05mm or permeability coefficient
-3The formation condition of cm/s; 3) presetting period of slurries can be regulated from 2min～30min; 4) compare with chemical grouting material more economical, cost; 5) weather resistance is better; 6) pollution-free to underground water surrounding.
Embodiment
Below in conjunction with embodiment the present invention is further described in detail.
Adopting Magnesium Acrylate Prepared-superfine cement is the main component composite grouting material, formed by superfine cement, the Magnesium Acrylate Prepared aqueous solution, water, trolamine, sodium-chlor, Sodium Nitrite, Sodium Persulfate that (each materials is except specifying, be technical pure), according to the engineering specifications of using, suitably adjust component proportion, can obtain the injection material of needed performance index.
The weight proportion of embodiment 1 each component is:
Material mixing, stir after, resulting injection material has good fluidity, perviousness is high, pulp stability is good, can fill with the performances such as scope is large, presetting period is about 14min, and final setting time is about 45min, and the slurries calculus ultimate compression strength behind the 60min is about 4MPa.
Grope through changing proportioning test, major ingredient is at superfine cement: 36%～40% Magnesium Acrylate Prepared aqueous solution: water: trolamine: sodium-chlor: Sodium Nitrite: in the scope of Sodium Persulfate=100: 10～30: 30～70: 0.1～0.5: 0.5～1: 1～3: 0.01～0.05, the basic effect that concrete castability is good, the slurries set strength is high is arranged all.
In further optimization experiment, each composition weight proportioning is controlled at: superfine cement: 36%～40% Magnesium Acrylate Prepared aqueous solution: water: trolamine: sodium-chlor: Sodium Nitrite: Sodium Persulfate=100: 10～15: 30～50: 0.1: 0.5: 1: 0.01～0.02 scope possesses the perviousness height, pulp stability is good, setting time is easily regulated, slurries set strength high.
The weight proportion of embodiment 2 each component is:
Material mixing, stir after, resulting injection material has mobile large, the performances such as perviousness is high, slurry stability good, slurries set strength height, presetting period is about 4min, and final setting time is about 35min, and the slurries calculus ultimate compression strength behind the 60min is about 12MPa.
The weight proportion of embodiment 3 each component is:
After above-mentioned starting material mix, stir, resulting injection material has that slurry stability is good, setting time is fast, slurries set strength high, presetting period is about 2min, and final setting time is about 25min, and the slurries calculus ultimate compression strength behind the 60min is about 16MPa.
Claims (4)
1. Magnesium Acrylate Prepared-superfine cement composite grouting material, in construction process, be used for stratum consolidation, it is characterized in that its major ingredient is comprised of superfine cement, the Magnesium Acrylate Prepared aqueous solution, water, trolamine, sodium-chlor, Sodium Nitrite, Sodium Persulfate, each composition weight proportioning is: superfine cement: 36%～40% Magnesium Acrylate Prepared aqueous solution: water: trolamine: sodium-chlor: Sodium Nitrite: Sodium Persulfate=100: 10～30: 30～70: 0.1～0.5: 0.5～1: 1～3: 0.01～0.05.
2. described composite grouting material according to claim 1, it is characterized in that each composition weight proportioning is: superfine cement: 36%～40% Magnesium Acrylate Prepared aqueous solution: water: trolamine: sodium-chlor: Sodium Nitrite: Sodium Persulfate=100: 10～15: 30～50: 0.1: 0.5: 1: 0.01～0.02.
3. described composite grouting material according to claim 1, it is characterized in that each composition weight proportioning is: superfine cement: 36%～40% Magnesium Acrylate Prepared aqueous solution: water: trolamine: sodium-chlor: Sodium Nitrite: Sodium Persulfate=100: 10: 30: 0.2: 0.5: 1: 0.02.
4. the production method of claim 1 or 2 or 3 described composite grouting materials, it is characterized in that, its major ingredient adds entry, trolamine, sodium-chlor, Sodium Nitrite, Sodium Persulfate by formula rate in the Magnesium Acrylate Prepared aqueous solution, after the stirrer high speed mixes, mix with quantitative superfine cement again.
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| CN103772868A (en) * | 2013-12-27 | 2014-05-07 | 中科院广州化灌工程有限公司 | Powder-acrylate composite grouting material and preparation method and application thereof |
| CN104591613A (en) * | 2014-12-17 | 2015-05-06 | 西南交通大学 | Magnesium acrylate-superfine cement double-liquid composite grouting material |
| CN105801022A (en) * | 2016-03-04 | 2016-07-27 | 成都眷诚土木工程勘察设计有限责任公司 | Method for preparing unsaturated carboxylate solution modified concrete compound material |
| CN109704659A (en) * | 2019-02-14 | 2019-05-03 | 苏州市姑苏新型建材有限公司 | A kind of reinforcing bar sleeve for connection grouting material |
| EP3733627A1 (en) * | 2019-05-02 | 2020-11-04 | Sika Technology Ag | Mineral binder compositions with accelerated setting and/or curing |
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| CN102093863A (en) * | 2011-01-18 | 2011-06-15 | 大庆石油管理局 | Ultra-fine cement slurry for blocking |
| CN102503310A (en) * | 2011-11-07 | 2012-06-20 | 西南交通大学 | Super-high early-strength grouting material for repairing ballastless track structure of high speed railway |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103772868A (en) * | 2013-12-27 | 2014-05-07 | 中科院广州化灌工程有限公司 | Powder-acrylate composite grouting material and preparation method and application thereof |
| CN103772868B (en) * | 2013-12-27 | 2016-01-20 | 中科院广州化灌工程有限公司 | A kind of powder-acrylate composite grouting material and preparation method thereof and application |
| CN104591613A (en) * | 2014-12-17 | 2015-05-06 | 西南交通大学 | Magnesium acrylate-superfine cement double-liquid composite grouting material |
| CN105801022A (en) * | 2016-03-04 | 2016-07-27 | 成都眷诚土木工程勘察设计有限责任公司 | Method for preparing unsaturated carboxylate solution modified concrete compound material |
| CN109704659A (en) * | 2019-02-14 | 2019-05-03 | 苏州市姑苏新型建材有限公司 | A kind of reinforcing bar sleeve for connection grouting material |
| CN109704659B (en) * | 2019-02-14 | 2021-09-28 | 苏州市姑苏新型建材有限公司 | Sleeve grouting material for steel bar connection |
| EP3733627A1 (en) * | 2019-05-02 | 2020-11-04 | Sika Technology Ag | Mineral binder compositions with accelerated setting and/or curing |
| WO2020221909A1 (en) * | 2019-05-02 | 2020-11-05 | Sika Technology Ag | Mineral binder compositions with accelerated setting and/or curing |
| US20220242789A1 (en) * | 2019-05-02 | 2022-08-04 | Sika Technology Ag | Mineral binder compositions with accelerated setting and/or curing |
| US12030816B2 (en) | 2019-05-02 | 2024-07-09 | Sika Technology Ag | Mineral binder compositions with accelerated setting and/or curing |
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Application publication date: 20130220 |