CN101269943B - High-strength grout containing superfines and preparing method - Google Patents

High-strength grout containing superfines and preparing method Download PDF

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Publication number
CN101269943B
CN101269943B CN2008103015450A CN200810301545A CN101269943B CN 101269943 B CN101269943 B CN 101269943B CN 2008103015450 A CN2008103015450 A CN 2008103015450A CN 200810301545 A CN200810301545 A CN 200810301545A CN 101269943 B CN101269943 B CN 101269943B
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CN
China
Prior art keywords
powder
mentioned
strength grout
strength
grouting
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Application number
CN2008103015450A
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Chinese (zh)
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CN101269943A (en
Inventor
路来军
王安领
王旻
武俊宇
杨和平
Original Assignee
北京东方建宇混凝土科学技术研究院有限公司
北京新奥混凝土有限公司
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Priority to CN2008103015450A priority Critical patent/CN101269943B/en
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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/06Aluminous cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/60Flooring materials
    • C04B2111/62Self-levelling compositions
    • 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 present invention discloses high-strength grouting material containing ultra-fine powder and a method for producing the high-strength grouting material containing the ultra-fine powder, which comprises the components by weight: 15 to 21 percent of sulphoaluminate cement, 5 to 9 percent of ultra-fine inert powder, 6 to 10 percent of ultra-fine active powder, 0.1 to 0.4 percent of water-reducing agent,0.01 to 0.03 percent of thickening agent, 52 to 67 percent of building sand and 12 to 18 percent of mixing water. The present invention adopts the sulphoaluminate cement as the main gelled material to be mixed with appropriate ultra-fine powder materials as well as less organic compound, thereby being characterized in flat shift, vibro-free, early strength, high strength, micro inflation, abrasion resistance, good plasticity preservation and aging resistance as well as multiple use functions and simple operation and wide application.

Description

Contain high-strength grout of ultrafine powder and preparation method thereof
(1) technical field
The present invention relates to the injection material in a kind of construction work.
(2) background technology
For a long time, the grouting material is the material of construction that a class application quantity is big, use is wide in construction work.Particularly self-leveling material has successively been developed gypsum system, cement system and polymer cement gravity flowing levelling mortar, is widely used in mechanical means installation and the reinforcing and repairing engineering.Along with The development in society and economy, the consumption of high-strength grout is increasing.
At present, when using the cement-based grout material, because the ordinary Portland cement volumetric shrinkage is easy to generate tiny crack, can cause bearing that eakiness under the rear support plate is installed, in addition, the strength development of cement-based grout material is slow, poor durability can influence the structural stability and the work-ing life of construction work.And some are the grouting material of main raw material(s) with the organic polymer, and its thermostability is generally poor.At last, also there is non-adjustable, influenced by ambient temperature big shortcoming time of coagulation in most grouting material, and particularly during winter construction, the slow setting problem is particularly serious.Therefore, the high performance grouting material of development of new has become the task of top priority.
(3) summary of the invention
The purpose of this invention is to provide a kind of high-strength grout that contains ultrafine powder, solve conventional grout material thermostability, poor durability, influence the technical problem of construction quality.
For achieving the above object, the present invention adopts following technical scheme:
This high-strength grout that contains ultrafine powder is characterized in that the raw material composition and the weight percent of this grouting material is:
Aluminosulfate cement 15%-21%,
Limestone powder, fine-ground fly-ash or both mixture 5%-9%,
Superfine active powder 6%-10%,
Water reducer 0.1%-0.4%,
Thickening material 0.01%-0.03%,
Building sand 52%-67%;
The specific surface area of above-mentioned limestone powder, fine-ground fly-ash or both mixtures is 600-1200m 2/ kg;
The specific surface area of above-mentioned superfine active powder is 600-1200m 2/ kg.
Above-mentioned superfine active powder is the silicon ash, ground slag or the mixture of the two.
The fineness modulus of above-mentioned building sand is 2.6-2.9.
Above-mentioned water reducer can be sulfonated lignin based water reducer, naphthalene series high-efficiency water-reducing agent or polycarboxylate high performance water-reducing agent.
Above-mentioned thickening material can be one or more the mixture in Natvosol, methyl hydroxyethylcellulose, Type 3U, the methylhydroxypropylcellulose.
Can also be added with hardening accelerator in the above-mentioned grouting material.
Can also be added with retardant in the above-mentioned grouting material.
A kind of preparation method who contains the high-strength grout of ultrafine powder directly adds the mixing water that the raw material that accounts for this grouting material is formed weight percent 12% ~ 18% after grouting material is pre-mixed, encapsulates at the construction field (site), fully can use after the stirring, need not to vibrate.
Compared with prior art the present invention has following characteristics and beneficial effect:
The present invention is to be main gelling material with aluminosulfate cement, an amount of admixture superfine powdery material, adding a small amount of organic constituent exploitation forms, have from levelling, without vibration, strong, high-strength, microdilatancy early, wear-resistant, protect plasticity good, characteristic and multiple functions of use such as ageing-resistant, easy and simple to handle, be widely used.Compare with the conventional grout material, the present invention has reduced the water consumption of material by the admixture ultrafine powder, improved gelling material and gather materials between micro-interface, significantly improve the early strength and the endurance quality of material, made the grouting material when keeping upper flow regime, can reach the early strength of superelevation.
The present invention is pre-mixed to add at the construction field (site) after the encapsulation and can uses after mixing water fully stirs, and cost is low, easy and simple to handle, convenient transportation.Product is packed powdery solid, the scene directly adds water and stirs, can use, have early strength height (1d ultimate compression strength is greater than 40MPa), from levelling (degree of mobilization can reach 280mm), protect plasticity good (degree of mobilization is not less than 220mm in the 2h), not bleeding (pressure bleeding rate 0%), do not have shrink (the microdilatancy effect is arranged), to characteristics such as reinforcing bar non-corrodings.Be equipped with in installations and engineering first-aid repair, the strengthening construction various, can significantly speed up the work after using this product, improve construction quality.But water back a few hours pedestrian, be open to traffic, reached the design working strength in 24 hours, can install or operational outfit, go into operation in advance or resume production.
The present invention is a kind of high-strength hyposmosis type grouting material, and it is affixed to be widely used in large equipment base, is specially adapted to the salt erosion environment.
(4) embodiment
Embodiment one:
A kind of high-strength grout that contains ultrafine powder, the composition and the weight percent of this grouting material are:
Aluminosulfate cement 17%,
The mixture 8% of limestone powder and fine-ground fly-ash,
Ground slag 8%,
Sulfonated lignin based water reducer 0.15%,
Natvosol 0.02%,
Building sand 54%,
Mixing water 13%.
The performance of the high-strength grout of this ultrafine powder is as follows:
Ultimate compression strength R 6h=12.3MPa, R 1d=33.2MPa, R 7d=50.4MPa
Degree of mobilization: 300mm
Pressure bleeding rate: 0%
Degree of free swelling: 0.08%
The above-mentioned preparation method who contains the high-strength grout of ultrafine powder is: directly add at the construction field (site) after the material that will be in the milk is pre-mixed, encapsulates and can use after mixing water fully stirs, need not to vibrate.If gel time of the present invention is shortened, also can in the grouting material, add hardening accelerator.
Embodiment two:
A kind of high-strength grout that contains ultrafine powder, the composition and the weight percent of this grouting material are:
Aluminosulfate cement 21%,
Limestone powder 5%,
Silicon ash 10%,
Sulfonated lignin based water reducer 0.3%,
Type 3U 0.02%,
Building sand 52%,
Mixing water 12%.
The performance of the high-strength grout of this ultrafine powder is as follows:
Ultimate compression strength R 6h=20.1MPa, R 1d=57.4MPa, R 7d=62.3MPa
Degree of mobilization: 285mm
Pressure bleeding rate: 0%
Degree of free swelling: 0.11%
The above-mentioned preparation method who contains the high-strength grout of ultrafine powder is: directly add at the construction field (site) after the material that will be in the milk is pre-mixed, encapsulates and can use after mixing water fully stirs, need not to vibrate.
Embodiment three:
A kind of high-strength grout that contains ultrafine powder, the composition and the weight percent of this grouting material are:
Aluminosulfate cement 15%,
Fine-ground fly-ash 9%,
The mixture 7% of silicon ash and ground slag,
Naphthalene series high-efficiency water-reducing agent 0.1%,
Natvosol 0.03%,
Building sand 53%,
Mixing water 16%.
The performance of the high-strength grout of this ultrafine powder is as follows:
Ultimate compression strength R 6h=7.8MPa, R 1d=27.3MPa, R 7d=41.2MPa
Degree of mobilization: 310mm
Pressure bleeding rate: 0%
Degree of free swelling: 0.06%
The above-mentioned preparation method who contains the high-strength grout of ultrafine powder is: directly add at the construction field (site) after the material that will be in the milk is pre-mixed, encapsulates and can use after mixing water fully stirs, need not to vibrate.If gel time of the present invention is prolonged, also can in the grouting material, add retardant.
Time of coagulation of the present invention and ultimate compression strength can be regulated by selecting for use different types of cement type and admixture accent to coagulate component.

Claims (8)

1. high-strength grout that contains ultrafine powder, the raw material that it is characterized in that this grouting material forms and weight percent is:
Aluminosulfate cement 15%-21%,
Limestone powder, fine-ground fly-ash or both mixture 5%-9%,
Superfine active powder 6%-10%,
Water reducer 0.1%-0.4%,
Thickening material 0.01%-0.03%,
Building sand 52%-67%;
The specific surface area of above-mentioned limestone powder, fine-ground fly-ash or both mixtures is 600-1200m 2/ kg;
The specific surface area of above-mentioned superfine active powder is 600-1200m 2/ kg.
2. a kind of high-strength grout that contains ultrafine powder according to claim 1 is characterized in that: above-mentioned superfine active powder is the silicon ash, ground slag or the mixture of the two.
3. a kind of high-strength grout that contains ultrafine powder according to claim 1 is characterized in that: the fineness modulus of above-mentioned building sand is 2.6-2.9.
4. a kind of high-strength grout that contains ultrafine powder according to claim 1 is characterized in that: above-mentioned water reducer is sulfonated lignin based water reducer, naphthalene series high-efficiency water-reducing agent or polycarboxylate high performance water-reducing agent.
5. a kind of high-strength grout that contains ultrafine powder according to claim 1 is characterized in that: above-mentioned thickening material is one or more the mixture in Natvosol, methyl hydroxyethylcellulose, Type 3U, the methylhydroxypropylcellulose.
6. a kind of high-strength grout that contains ultrafine powder according to claim 1 is characterized in that: also be added with hardening accelerator in the above-mentioned grouting material.
7. a kind of high-strength grout that contains ultrafine powder according to claim 1 is characterized in that: also be added with retardant in the above-mentioned grouting material.
8. one kind according to any described preparation method who contains the high-strength grout of ultrafine powder of claim 1-7, it is characterized in that: directly add the mixing water that the raw material that accounts for this grouting material is formed weight percent 12% ~ 18% after the material that will be in the milk is pre-mixed, encapsulates at the construction field (site), can use after fully stirring, need not to vibrate.
CN2008103015450A 2008-05-12 2008-05-12 High-strength grout containing superfines and preparing method CN101269943B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN101269943B true CN101269943B (en) 2011-06-08

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Families Citing this family (22)

* Cited by examiner, † Cited by third party
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CN101767949B (en) * 2009-01-06 2012-07-04 上海罗洋新材料科技有限公司 Volume stabilizer for cement-based composite material and preparation method thereof
CN102086113B (en) * 2009-12-04 2013-07-31 福建省佳美集团公司 Cement slurry and method for manufacturing cement handicraft article therefrom
CN101913840A (en) * 2010-08-10 2010-12-15 刘茂平 Rapid hardening high-strength grouting material
CN102126846B (en) * 2010-12-08 2013-01-30 冯乃谦 Manufacturing method for high pumping concrete
CN102173705B (en) * 2011-01-29 2013-04-24 长沙归一建材科技有限公司 Composite sulphoaluminate cement-based self-leveling material and preparation method thereof
CN102432254B (en) * 2011-09-29 2013-09-04 成都嘉新科技集团有限公司 Gravity filling mortar
CN102701684A (en) * 2012-05-16 2012-10-03 阳泉昌达混凝土搅拌站 Preparation method of super-high early strength concrete material
CN103265253B (en) * 2013-05-08 2014-08-20 沈阳建筑大学 High-performance grouting material for prefabricated building construction, and preparation method thereof
CN103482927B (en) * 2013-09-02 2015-01-07 东南大学 High-crack-resistance low-shrinkage high-ductility mortar and preparation method thereof
CN103613349B (en) * 2013-11-15 2016-01-13 河南理工大学 A kind of formula of two fluid grouting/compaction material and preparation method
CN104788045A (en) * 2014-01-18 2015-07-22 上海标仕新型建筑材料厂 Grouting material
CN103951355B (en) * 2014-04-02 2015-08-12 山西凯舟科技有限公司 Ultra-fine anti-segregation injecting paste material and preparation method thereof
CN103951353B (en) * 2014-05-05 2015-10-21 上海力阳道路加固科技股份有限公司 For grouting material that road is reinforced and preparation method thereof
CN104529358A (en) * 2014-11-27 2015-04-22 山西省建筑科学研究院 High-admixture low-cost grouting material and preparation method thereof
CN104446274B (en) * 2014-12-15 2016-08-24 北方工业大学 A kind of high-strength quick-solidifying material
CN104860616B (en) * 2015-04-17 2016-08-17 临沂大学 Seif-citing rate Self-leveling equipment grouting material
CN105271986A (en) * 2015-09-30 2016-01-27 沈阳建筑大学 Cement grouting material adopting quartz sand and iron tailings as aggregates
CN106007550B (en) * 2016-01-25 2018-09-25 湖南省建筑工程集团总公司 A kind of big fluidised form ungauged regions anti-crack concrete grouting material
CN106800381A (en) * 2017-01-11 2017-06-06 沧州临港金隅水泥有限公司 A kind of concrete combined addition material
CN107235665A (en) * 2017-07-12 2017-10-10 蔡荪萍 A kind of novel stone dust film bag special grouting agent of stake
CN109665787A (en) * 2019-02-28 2019-04-23 陈辉 A kind of manufacturing method of construction wall grouting material
CN109912278A (en) * 2019-03-20 2019-06-21 内蒙古高远工程科技发展有限公司 A kind of high performance grouting material and preparation method thereof

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Address after: 100020 No. 297 village head, Songzhuang Town, Songzhuang Town, Beijing, Tongzhou District

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Patentee after: Beijing Dongfangjianyu Institute of Concrete Science & Technology Limited Compan

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