CN107445542A - A kind of cement base high-strength grout and its application in assembled architecture field - Google Patents
A kind of cement base high-strength grout and its application in assembled architecture field Download PDFInfo
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- CN107445542A CN107445542A CN201710651937.9A CN201710651937A CN107445542A CN 107445542 A CN107445542 A CN 107445542A CN 201710651937 A CN201710651937 A CN 201710651937A CN 107445542 A CN107445542 A CN 107445542A
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- Prior art keywords
- cement
- strength
- swelling agent
- strength grout
- base high
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions 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
- C04B28/04—Portland cements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of novel cement-based high-strength grout, including portland cement, fine sand, miberal powder, metakaolin, swelling agent, defoamer, water reducer, moulding swelling agent, each raw material is by mass percentage portland cement 33.5% 40%, fine sand 46% 52.5%, miberal powder 3% 7.5%, metakaolin 2.5% 4.2%, swelling agent 2.8% 5.1%, defoamer 0.10% 0.21%, water reducer 0.15% 0.4%, moulding swelling agent 0.006% 0.02%.The high-strength grout that the present invention can connect as the slurry anchor connection of assembled architecture, sleeve connection, bellows, ensure early strength it is high while, have both the advantages of fluidity is big in the case of, effectively enhance middle and later periods intensity, it is a kind of strength cement-based grouting material of remote superstate normal intensity, modeling ability is protected by force and without bleeding and precipitation, there is standard compliant early metaphase expansion rate.
Description
Technical field
The invention belongs to cement-based grouting material field, and in particular to a kind of novel cement-based high-strength grout and its
The application of assembled architecture field.
Background technology
With the development of architectural industrialization, using concrete assembled Building technology than cast-in-place concrete structure, have all
The advantages of more, construction quality can be not only improved, resource, the energy can also be saved, reduced pollution and carbon emission, reduction scene are applied
Worker person etc., therefore there is wide development and application prospect in the building field in future, and in national " 13 " planning
Give priority to one of content.Prefabricated concrete structure is the direction of modern architecture industrialized development, and the vertical connection of component
It is then the key technology of assembled architecture construction, the vertical connected mode that China mainly uses has sleeve connection, constraint slurry anchor to connect
Connect, corrugated steel tube connection etc., the technology is filled in set using high flowability, early strong, high-strength, microdilatancy cement-based grouting material
In cylinder and Ribbed Bar gap, reinforcing bar is set to be fixedly connected with sleeve after slurry condenses hardening.
At present, strength cement-based grouting material on the market is mainly low intensive cement grout material, is mainly used in traditional construction and mixes
Solidifying soil cracking seam is repaired, building is reinforced, basement process etc., and be used for the high-strength cement base grouting material product of assembled architecture compared with
It is few；Meanwhile grouting material mainly uses sulphate aluminium cement+high performance additive+ultra-fine inert material, price is higher, generally deposits
Fresh paste poor fluidity, intensity deficiency, expanded without early-age plastic the problems such as.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of new type water for above-mentioned the shortcomings of the prior art
Mud base high-strength grout, the high-strength grout connected as a kind of slurry anchor connection of assembled architecture, sleeve connection, bellows,
Ensure early strength it is high while, have both the advantages of fluidity is big in the case of, effectively enhance middle and later periods intensity, be one
The strength cement-based grouting material of the remote superstate normal intensity of kind, protect modeling ability by force and without bleeding and precipitation, have in standard compliant morning
Phase expansion rate.
The present invention is to solve the problems, such as that used technical scheme set forth above is：
A kind of novel cement-based high-strength grout, including portland cement, fine sand, miberal powder, metakaolin, swelling agent, disappear
Infusion, water reducer, moulding swelling agent, each raw material are portland cement 33.5%-40%, fine sand 46%- by mass percentage
52.5%, miberal powder 3%-7.5%, metakaolin 2.5%-4.2%, swelling agent 2.8%-5.1%, defoamer 0.10%-
0.21%, water reducer 0.15%-0.4%, moulding swelling agent 0.006%-0.018%.
By such scheme, the portland cement uses high grade Portland cement, and label grade is more than
P.O.52.5 levels.
By such scheme, the fine sand uses the common river sands of below 0.6mm, natural grading.
By such scheme, the miberal powder uses S95 level ground blast furnace slags.
By such scheme, the swelling agent is calcium oxide and the compound swelling agent of aluminium sulfate, is national standard one-stage expansion agent.
By such scheme, the defoamer is mineral oil and polyethylene glycols defoamer, the preferred powder-type of character, defoams energy
Power is stronger, can be cooperated with plastic expansion agent, while can increase substantially early middle and later periods intensity.
The application method of above-mentioned novel cement-based high-strength grout, after being well mixed by the various raw materials of proportion speed weighing,
According to 10%~15% plus water mix of raw material gross mass, it is stirred until homogeneous no caking and is defined, stand to grouting material solution surface
No longer bubbling is defined, you can uses.Wherein, stir as artificial or mechanical agitation, usual more than five minutes of time；Time of repose one
As 2-3 minutes.
The points for attention of application method：Summer high temperature situ configuration grouting material pays attention to moisture evaporation, and stirring scene should be windproof,
Stirring is accomplished to use should not be long, has been used after the completion of preferably stirring in 30 minutes；Winter stirring scene temperature not preferably less than 5
Degree, not preferably less than 15 degree of mixing water；Stirring scene such as condition is bad, answers proper extension duration of mixing, mix is uniformly filled
Point.
The strength cement-based grouting material that the above-mentioned novel cement-based high-strength grout of the present invention vertically connects as assembled architecture
Using.
Compared with prior art, what the present invention obtained has the beneficial effect that：
First, novel cement-based high-strength grout of the present invention is auxiliary using cement as bonding agent using river sand as aggregate
It is formulated with upper flow regime, microdilatancy, the material water reducer of anti-isolation, plastic expansion agent, defoamer, miberal powder, metakaolin,
While ensureing that early strength is high, have both the advantages of fluidity is big in the case of, effectively enhance middle and later periods intensity, be a kind of
The strength cement-based grouting material of remote superstate normal intensity, modeling ability is protected by force and without bleeding and precipitation, there is standard compliant early metaphase
Expansion rate.
Second, novel cement-based grouting material of the present invention, on the basis of conventional mineral matter admixture complex material, get rid of
Abandon using conventional mineral matter admixtures such as silicon ash, flyash, it is new using not yet being used at present in similar strength cement-based grouting material
Type metakaolin is as composite, and than traditional silicon ash admixture, higher than silicon ash with early strength, fluidity compares silicon ash
It is good, the advantages that later strength is equally high, and overcome caused by silicon ash property is unstable that grouting material property is unstable to ask
Topic, and there is stronger corrosion resistance and good durability.
3rd, novel cement-based grouting material of the present invention, performance is increased using normal silicate plus mineral matter admixture
Composition of concrete admixture forms, and has the cheap advantage of cost compared with aluminium sulfate system grouting material, reduces production cost, saved production
Product consume energy.In the market can be used for assembled architecture sleeve connection, constraint slurry anchor connection, the strength cement-based grouting material of corrugated steel tube connection
The market price is about at 3500 yuan/ton~6000 yuan/ton, and for the cost price of product of the present invention about at 742 yuan/ton, cost is big
Width reduces.
Novel cement-based grouting material of the present invention is pulvis, is easy to product construction usage, good with each component adaptability,
There are more long plastic ability and diminishing effect, while early strength development is contributed, there is certain early epistasis；In terms of construction
With reliable in quality, reduce cost, shorten the duration and it is easy to use the advantages that, the slurry anchor connection of assembled architecture can be used as, covered
Cylinder connection, the high-strength grout of bellows connection, and the reparation of traditional construction distress in concrete, building reinforcing, basement process etc.
Aspect.
Embodiment
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention is not
It is limited only to the following examples.
In following embodiments, the portland cement uses P.O52.5 cement；Metakaolin with particle diameter 10 μm with
Under；Swelling agent uses Wuhan San Yuanjin board swelling agents, is national standard one-stage expansion agent；Fine sand uses the common river sands of below 0.6mm, disappears
Infusion is admired using Shanghai and chemical plant P803 defoamers；The miberal powder uses S95 level ground blast furnace slags, and miberal powder particle diameter D10 is 2.098
μm, D50 be 12.962 μm, D90 be 38.916 μm；The plastic expansion agent is admired from Shanghai and chemical plant QH-100 shape shapes are swollen
Swollen dose；The water reducer is with powerful powder polycarboxylic acids water reducing agent of certain morning, is admired from Shanghai and the type of chemical plant 109 subtracts
Aqua.
Embodiment 1
A kind of high strength and no shrinting bar connecting strength cement-based grouting material, it is to be formed by llowing group of materials by weight proportioning
, as shown in table 1, including portland cement, fine sand, miberal powder, metakaolin, swelling agent, defoamer, water reducer, moulding expansion
Agent, each raw material are portland cement 35.32% by mass percentage, fine sand 49.74%, miberal powder 5.97%, metakaolin
3.48%, swelling agent 4.97%, defoamer 0.10%, water reducer 0.40%, moulding swelling agent 0.02%.
Table 1
| Raw material | Cement | Miberal powder | Metakaolin | Swelling agent | Fine sand | Polycarboxylate water-reducer | Defoamer | Moulding swelling agent |
| Parts by weight | 355 | 60 | 35 | 50 | 500 | 4 | 1 | 0.15 |
The preparation method of above-mentioned novel cement-based high-strength grout：Homogenization Treatments are carried out to each raw material in table 1 first, so
After being well mixed afterwards by the various raw materials of proportion speed weighing, after gained compound carries out Homogenization Treatments again, by packing specification
Metering is weighed into bag, finished product storage.
Application method：According to 12% plus water mix of novel cement-based high-strength grout final product quality, nothing is stirred until homogeneous
Caking is defined, and stands to the no longer bubbling of grouting material solution surface and is defined, you can uses.Performance test results are as shown in table 4, test
Canonical reference JGT 408-2013《Bar connecting sleeve grouting material》.
Embodiment 2
A kind of high strength and no shrinting bar connecting strength cement-based grouting material, it is formed by llowing group of materials by weight proportioning
(referring to table 2).
Table 2
| Raw material | Cement | Ground blast furnace slag | Metakaolin | Swelling agent | Sand | Polycarboxylate water-reducer | Defoamer | Plastic expansion agent |
| Parts by weight | 335 | 60 | 35 | 50 | 520 | 3 | 2 | 0.15 |
Above-mentioned high strength and no shrinting bar connecting is with cement-based grout preparation method for material with embodiment 1.
Embodiment 3
A kind of high strength and no shrinting bar connecting strength cement-based grouting material, it is formed by llowing group of materials by weight proportioning
(referring to table 3).
Table 3
| Raw material | Cement | Ground blast furnace slag | Metakaolin | Swelling agent | Sand | Polycarboxylate water-reducer | Defoamer | Moulding swelling agent |
| Parts by weight | 400 | 60 | 35 | 50 | 455 | 3.5 | 1.5 | 0.15 |
Above-mentioned high strength and no shrinting bar connecting is with cement-based grout preparation method for material with embodiment 1.
Comparative example 1
A kind of high strength and no shrinting bar connecting strength cement-based grouting material, it is formed by llowing group of materials by weight proportioning
(referring to table 4) includes portland cement, fine sand, miberal powder, swelling agent, defoamer, water reducer, and each raw material is by mass percentage
Portland cement 38.74%, fine sand 49.68%, miberal powder 5.96%, swelling agent 4.97%, defoamer 0.20%, water reducer
0.40%, moulding swelling agent 0.05%.
Table 4
| Raw material | Cement | Ground blast furnace slag | Swelling agent | Sand | Polycarboxylate water-reducer | Defoamer | Plastic expansion agent |
| Weight fraction | 390 | 60 | 50 | 500 | 4 | 2 | 0.5 |
The preparation method of above-mentioned novel cement-based high-strength grout：Homogenization Treatments are carried out to each raw material in table 4 first, so
After being well mixed afterwards by the various raw materials of proportion speed weighing, after gained compound carries out Homogenization Treatments again, by packing specification
Metering is weighed into bag, finished product storage.
In use, according to 12% plus water mix of novel cement-based high-strength grout final product quality, no knot is stirred until homogeneous
Block is defined, and stands to the no longer bubbling of grouting material solution surface and is defined, you can uses.Performance test results are as shown in table 5.
Comparative example 2
A kind of high strength and no shrinting bar connecting strength cement-based grouting material, it is formed by llowing group of materials by weight proportioning
(referring to table 4) includes portland cement, fine sand, miberal powder, silicon ash, swelling agent, defoamer, water reducer, and each raw material presses quality percentage
Than being calculated as portland cement 34.26%, fine sand 48.94%, miberal powder 7.34%, silicon ash 3.43%, swelling agent 3.92%, defoamer
0.15%, water reducer 1.96%.
Table 4
| Raw material | Cement | Ground blast furnace slag | Silicon ash | Swelling agent | Sand | Polycarboxylate water-reducer | Defoamer |
| Weight fraction | 350 | 75 | 35 | 40 | 500 | 20 | 1.5 |
The preparation method of above-mentioned novel cement-based high-strength grout：Homogenization Treatments are carried out to each raw material in table 4 first, so
After being well mixed afterwards by the various raw materials of proportion speed weighing, after gained compound carries out Homogenization Treatments again, by packing specification
Metering is weighed into bag, finished product storage.
In use, according to 12% plus water mix of novel cement-based high-strength grout final product quality, no knot is stirred until homogeneous
Block is defined, and stands to the no longer bubbling of grouting material solution surface and is defined, you can uses.Performance test results are as shown in table 5.
Table 5
By embodiment compared with comparative example 1, it is known that：In embodiment, the addition of metakaolin effectively increases certain increasing
Thick, anti-bleeding function, and it is not added with that metakaolin cement base later strength is lower slightly, and initial flux degree is slightly higher in comparative example 1；Will be real
Example is applied compared with comparative example 2, it is known that：Although comparative example 2 with the addition of silicon ash and substitute metakaolin, its intensity is advised less than specification
Fixed 35MPa.And as seen from the above-described embodiment, grouting material fluidity of the present invention protects well modeling ability, and (initial flow degree exists by force
Fluidity is in more than 290mm after more than 300mm, 30min) and without bleeding and precipitation, early middle and later periods intensity it is high (1d intensity >=
35MPa, 3d intensity >=60MPa, 28d intensity >=85MPa), there is (the moulding swelling agent compensation of standard compliant early metaphase expansion rate
The accidental loss of initial value, middle and later periods grouting material shrinks to be compensated by swelling agent.)
Comparative example 3
There is related demand of technical standard in country to the detection method of grouting material to performance, and in the market meets Standard
Product can use.The present invention builds in the market Shenzhen the modern times board grouting material and the present invention of the concrete of Science and Technology Ltd.
Compare, testing result is as shown in table 5, meets Standard, but 28d compression strength is less than embodiment of the present invention.
Described above is only the preferred embodiment of the present invention, it is noted that is come for one of ordinary skill in the art
Say, without departing from the concept of the premise of the invention, some modifications and variations can also be made, these belong to the present invention's
Protection domain.
Claims (8)
- A kind of 1. cement base high-strength grout, it is characterised in that it mainly include portland cement, fine sand, miberal powder, metakaolin, Swelling agent, defoamer, water reducer, moulding swelling agent, each raw material are portland cement 33.5%-40% by mass percentage, Fine sand 46%-52.5%, miberal powder 3%-7.5%, metakaolin 2.5%-4.2%, swelling agent 2.8%-5.1%, defoamer 0.10%-0.21%, water reducer 0.15%-0.4%, moulding swelling agent 0.006%-0.02%.
- 2. a kind of cement base high-strength grout according to claim 1, it is characterised in that the portland cement is using high Label Portland cement, label grade are more than P.O.52.5 levels.
- 3. a kind of cement base high-strength grout according to claim 1, it is characterised in that the fine sand uses below 0.6mm River sand.
- 4. a kind of cement base high-strength grout according to claim 1, it is characterised in that the miberal powder uses S95 level ore deposits Powder.
- A kind of 5. cement base high-strength grout according to claim 1, it is characterised in that the defoamer be mineral oil and Polyethylene glycols defoamer, character are powder-type.
- 6. the application method of a kind of cement base high-strength grout described in claim 1, it is characterised in that as described in claim 1 After the various raw materials of proportion speed weighing are well mixed, according to 10%~15% plus water mix of raw material gross mass, it is stirred until homogeneous It is defined without caking, stands to the no longer bubbling of grouting material solution surface and be defined, you can is used.
- 7. the application method of a kind of cement base high-strength grout according to claim 6, it is characterised in that during the stirring Between be more than five minutes；Time of repose is 2-3 minutes.
- 8. the strength cement-based grouting material that a kind of cement base high-strength grout described in claim 1 vertically connects as assembled architecture Application.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112299797A (en) * | 2020-10-29 | 2021-02-02 | 辽宁省交通高等专科学校 | Impervious reinforced grouting material for fractured rock mass under flowing water condition and slurry production method |
| CN112551969A (en) * | 2020-11-11 | 2021-03-26 | 北京纽维逊建筑工程技术有限公司 | Polymer modified cement-based grouting material for reinforcing fan foundation and preparation method thereof |
| CN112551970A (en) * | 2020-11-11 | 2021-03-26 | 北京纽维逊建筑工程技术有限公司 | Cement-based grouting material for reinforcing wind turbine foundation and preparation method thereof |
| CN116082000A (en) * | 2023-02-15 | 2023-05-09 | 上海宝生新型建材有限公司 | High-performance steel bar sleeve grouting material |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112299797A (en) * | 2020-10-29 | 2021-02-02 | 辽宁省交通高等专科学校 | Impervious reinforced grouting material for fractured rock mass under flowing water condition and slurry production method |
| CN112551969A (en) * | 2020-11-11 | 2021-03-26 | 北京纽维逊建筑工程技术有限公司 | Polymer modified cement-based grouting material for reinforcing fan foundation and preparation method thereof |
| CN112551970A (en) * | 2020-11-11 | 2021-03-26 | 北京纽维逊建筑工程技术有限公司 | Cement-based grouting material for reinforcing wind turbine foundation and preparation method thereof |
| CN112551969B (en) * | 2020-11-11 | 2022-07-26 | 北京纽维逊建筑工程技术有限公司 | Polymer modified cement-based grouting material for reinforcing fan foundation and preparation method thereof |
| CN112551970B (en) * | 2020-11-11 | 2022-07-29 | 北京纽维逊建筑工程技术有限公司 | Cement-based grouting material for reinforcing wind turbine foundation and preparation method thereof |
| CN116082000A (en) * | 2023-02-15 | 2023-05-09 | 上海宝生新型建材有限公司 | High-performance steel bar sleeve grouting material |
| CN116082000B (en) * | 2023-02-15 | 2023-07-14 | 上海宝生新型建材有限公司 | High-performance steel bar sleeve grouting material |
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Application publication date: 20171208 |