CN107618094A - A kind of preparation method of RPC material and its cast-in-site - Google Patents
A kind of preparation method of RPC material and its cast-in-site Download PDFInfo
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- CN107618094A CN107618094A CN201710940240.3A CN201710940240A CN107618094A CN 107618094 A CN107618094 A CN 107618094A CN 201710940240 A CN201710940240 A CN 201710940240A CN 107618094 A CN107618094 A CN 107618094A
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Abstract
The invention provides the preparation method of a kind of RPC material and its cast-in-site, fed and stirred in the ratio and charge order of raw material, obtain RPC mixture, by RPC mixture scene injection mould and vibration compacting, conserved after vibrating, it is stripped after reaching demoulding strength, and carries out water conservation natural curing, obtains the RPC material.This application provides it is a kind of can cast-in-site, normal temperature natural curing production RPC process, have the advantages that technique be easily achieved, be easy to operate, production efficiency it is high, solve the technique bottleneck for restricting RPC large-scale industrial production, produce and prepare suitable for RPC building cast-in-site.The material has the advantages that high intensity, high tenacity, high-durability.
Description
Technical field
The present invention relates to building material technical field, in particular to a kind of RPC material and its now
The preparation method of field cast.
Background technology
RPC (Reactive Powder Concrete, abbreviation RPC) is in nineteen nineties
A kind of New Style Concrete Materials with many advantages, such as high intensity, high tenacity, high-durability developed by France, earliest should
Storage container for nuclear reactor waste material makes.It is by grading quartz sand, cement, SiO2The main portion such as admixture, additive
It is grouped into, adds the special steel fibre of high intensity to improve toughness and ductility, and condensing, steamed in hardening process by high temperature
Vapour is conserved to improve the microstructure of finished product.RPC strength grade can divide 200MPa levels, 500MPa levels and 800MPa levels.Due to
It has superhigh intensity and otherwise excellent properties, the extensive attention of international civil engineering educational circles is obtained, in recent years in Europe
There is the engineer applied example of different occasions in the South Korea in continent, North America and Asia.
The domestic research to RPC materials also deploys extensively, there is the report in terms of many New Progresses of R ＆ D in recent years.According to report
Road, some domestic teaching and scientific research units, the problem of RPC technical know-hows aspect, is discussed in depth, and gropes to test activity
Practical application of the powder concrete in some fields.
RPC is DSP (Densified System containing ultra-fine Particles)
The material High Technique Concrete mutually compound with fibre reinforced materials.Due to its unique physical characteristic and chemical characteristic, therefore it
Manufacturing process horizontal there is also difference with normal concrete.Ripe it is suitable to cast-in-place production normal temperature maintenance due to no
Production technology, constrain the application of RPC.
In view of this, it is special to propose the present invention.
The content of the invention
The first object of the present invention is to provide a kind of preparation method of RPC material in situ cast, with solution
The certainly existing art bottle for restricting the cast-in-place production of RPC (RPC) building and needing high-temperature steam or hot water to conserve
Neck, the preparation method of described RPC material in situ cast, there is provided one kind can cast-in-site, normal temperature it is naturally foster
Probationer nurse produce RPC process, have the advantages that technique be easily achieved, be easy to operate, production efficiency it is high, solve
The technique bottleneck of RPC large-scale industrial production is certainly restricted, suitable for RPC building scene
It is prepared by cast production.
The second object of the present invention is to provide a kind of preparation side of described RPC material in situ cast
RPC material prepared by method, the RPC material, there is high intensity, high tenacity, high-durability
The advantages that, in order to improve toughness and ductility adds the special steel fibre of high intensity, and condense, in hardening process by water conservation from
So maintenance, improve the microstructure of finished material.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
A kind of preparation method of RPC material in situ cast, is mainly included the following steps that：
Fed and stirred in the ratio and charge order of raw material, RPC mixture is obtained, by activity
Powder concrete mixture scene injection mould and vibration compacting, are conserved after vibrating, are stripped, go forward side by side after reaching demoulding strength
Row water conservation natural curing, obtain the RPC material.
A kind of preparation method of RPC material in situ cast provided herein, is lived with solving existing restrict
Property the cast-in-place production of powder concrete (RPC) building and technique bottleneck for needing high-temperature steam or hot water to conserve, described activity
The preparation method of powder concrete material in situ cast, there is provided one kind can cast-in-site, normal temperature natural curing production activity powder
The process of last concrete, have the advantages that technique be easily achieved, be easy to operate, production efficiency it is high, suitable for reactive powder
It is prepared by the production of concrete structure cast-in-site.
The preparation method of RPC material in situ cast provided herein, raw material are feeding and stirred
Before, first it is investigation and sampling detection；Select qualified supplier；Submit material planning；Organization material is marched into the arena；Preliminary test；
Appearance of clearing up and discharging of stocking up underproof to preliminary test；Inspection by sampling, stock processing underproof to inspection by sampling or appearance of clearing up and discharging；
Finally it is used to construct to examining qualified material to prepare.
Preferably, the process that the charge order is fed and stirred specifically includes following steps：
Quartz sand, steel fibre, cement, SiO are should be according to charge order2Admixture, water, the order of concrete admixture,
First by quartz sand, steel fibre, cement and SiO2Admixture stirs 4~5 minutes in advance, and then plus water, concrete admixture are stirred for 3
~6 minutes；
It is furthermore preferred that the speed of the stirring is 45~80 revs/min, the preferred stirring uses forced mixer
Operated.
Concrete admixture is dissolved in the water in advance, avoids it from disperseing in other raw materials are added uneven.
Preferably, the raw material, including the following component according to mass fraction meter：
700~1000 parts of Portland cement, SiO2170~250 parts of admixture, 1000~1400 parts of quartz sand, mix
Coagulate 60~140 parts of native 30~75 parts of additive, 110~190 parts of water and steel fibre；
It is furthermore preferred that water-cement ratio≤0.2 of the RPC.
Water-cement ratio not should be greater than 0.2；Cement, SiO2By mass, weighing should be accurate for the dosage of admixture drying regime
To ± 1%；Quartz sand is using aggregate is dried, and by mass, weighing should be accurate to ± 2% to dosage；The use of water, concrete admixture
By mass, weighing should be accurate to ± 0.5% automatic metering equipment to amount.
Concrete admixture is broadly divided into four classes：(1) additive of concrete mix rheological property is improved, including it is various
Water reducer, air entraining agent and pumping admixture etc.；(2) concrete coagulating time, the additive of hardening capacity, including retarder, morning are adjusted
Strong agent and accelerator etc.；(3) additive of concrete durability, including air entraining agent, waterproofing agent and corrosion inhibitor etc. are improved；(4) change
The additive of kind concrete other performance；Including air-entrainment, swelling agent, colouring agent, antifreezing agent, waterproofing agent and pumping admixture etc..
Preferably, the Portland cement is one or two kinds of group in P.O 42.5 or P.O 52.5
Close.
Portland cement, by Portland clinker, 5%~20% mixing material and proper amount of gypsum is levigate is made
Hydraulic cementing materials.Big with intensity height, the heat of hydration, frost resistance is good, drying shrinkage is small, wearability is preferable, carbonization resistance is preferable,
Corrosion-resistant, the characteristic of non-refractory.
Preferably, the SiO2The average grain diameter of admixture is 0.31~0.5 μm.
Preferably, the particle diameter of the quartz sand is 0.16~1.25mm.
SiO2Admixture and quartz sand are arranged in pairs or groups using grading ratio.
Preferably, a diameter of 0.16~0.3mm of the steel fibre.
Steel fibre is that major diameter is made to cut off finer wire method, cold-rolling strip steel shearing, steel ingot milling or molten steel rapid condensation method
Than (fibre length and the ratio of its diameter, when fibre section is non-circular, using the diameter of the conversion representative section area of a circle)
For 30~100 fiber.To make steel fibre relatively evenly be scattered in mortar or concrete, and the draw ratio of increased fiber, can
Use the steel fibre that collection pencil is bonded together into by water-soluble glue.Steel fibre can be cut off with cold drawn wire, sheet metal is sheared, steel
The methods of block or steel ingot milling and molten steel are drawnworked manufactures.The steel fibre of both certainty ratios is filled in concrete, can improve its tension,
Bending strength, and its toughness and impact strength is significantly increased.
Preferably, the process by RPC scene injection mould and vibration compacting, is specifically included following
Step：
RPC mixture after stirring irrigated in 30 minutes to be finished, component continuous pouring, largest interval
Time should be no more than 6 minutes, and RPC mixture stirring, transport, cast and component temperature for 10~
30℃；
It is furthermore preferred that the vibration compacting specifically includes following steps：Shaken according to the geomery of structure using adhesion type
Dynamic device vibratory compaction shaping.
Form vibrator can also be replaced with vibrating head, and RPC is vibrated.
It is furthermore preferred that the material of the mould is one kind in steel or engineering plastics.
Mold materials can use steel or engineering plastics, and mould should have enough surface smoothnesses, intensity, rigidity and stably
Property, it is ensured that each portion structure size is correct and the position of built-in fitting is accurate, and seam is closely connected；The material of template should have necessarily hard
Degree, it is wear-resisting, to ensure template frequency of usage.And template answers convenient disassembly, it is convenient to clean, is readily transported, to save man-hour, carries
High labor productivity.
Preferably, the process of the water conservation natural curing, specifically includes following steps：
With covered rearing with plastic film water conservation, and cover cotton-wadded quilt in plastic sheeting outer layer or woven straw carries out insulated curing.
The preparation method of the application, additionally provide the normal temperature maintenance side of the RPC material of cast-in-site preparation
Method, the technique bottleneck for overcoming the cast-in-place production of RPC (RPC) building and needing high-temperature steam or hot water to conserve,
Improve the microstructure of finished material, improve the intensity of RPC material.
RPC prepared by the preparation method of RPC material in situ cast as described above
Material.
The RPC material, has the advantages that high intensity, high tenacity, high-durability, in order to improve toughness and
Ductility adds the special steel fibre of high intensity, and improves finished material by water conservation natural curing in condensation, hardening process
Microstructure.
Compared with prior art, beneficial effects of the present invention are：
(1) preparation method of RPC material in situ provided herein cast, there is provided one kind can show
Field cast, the process of normal temperature natural curing production RPC, there is technique to be easily achieved, be easy to operate, be raw
The advantages that producing efficiency high.
(2) preparation method of RPC material in situ provided herein cast, solve to restrict activity powder
The technique bottleneck of last concrete large-scale industrial production, produce and make suitable for RPC building cast-in-site
It is standby.
(3) the RPC material of cast-in-site provided herein, have high intensity, high tenacity, height resistance to
The advantages that long property, the special steel fibre of high intensity is added in order to improve toughness and ductility, and condensing, passing through guarantor in hardening process
Water natural curing, improve the microstructure of finished material.
Embodiment
Technical scheme is clearly and completely described below in conjunction with embodiment, but ability
Field technique personnel will be understood that following described embodiment is part of the embodiment of the present invention, rather than whole embodiments,
The present invention is merely to illustrate, and is not construed as limiting the scope of the present invention.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.Unreceipted actual conditions person in embodiment, the condition suggested according to normal condition or manufacturer are carried out.Agents useful for same or instrument
Unreceipted production firm person, it is the conventional products that can be obtained by commercially available purchase.
Embodiment 1
The preparation method of RPC material in situ cast provided herein, specifically includes following steps：
(1), the non-naphthalene water reducers of 60kg are put into the 140kg water measured and dissolved, it is standby；
(2) quartz sand 1300kg and the steel for, adding a diameter of 0.16mm that particle diameter is 0.16mm simultaneously into mixer are fine
110kg is tieed up, stirring adds P.O42.5 Portland cement 730kg to uniform in 4~5 minutes, and average grain diameter is 0.5 μm
SiO2Admixture 210kg (SiO285%) content is more than, stirring is stirred for 3~6 minutes to standby material that is uniform, adding in step (1)
Mix and uniformly obtain RPC mix, drained into the container on ground, mixing speed is 60 revs/min；
(3) according to wall size formwork, the RPC mix prepared in step (2) is then poured into mould
Cast-in-site in tool, inserted in RPC and vibrated with internal vibration rod in cast, until reactive powder
Concrete vibrating is closely knit；
Each vibrating time vibrated a little is 1-2 minutes, and the two neighboring vibrating radins to vibrate a little will cross one another, vibrate
During upper layer concrete, vibrating spear will insert next layer concrete 100mm；
(4) repeated the above steps (1)-(3), and water conservation natural curing is carried out until the completion of whole wall pouring, and to wall,
With covered rearing with plastic film water conservation, and cover cotton-wadded quilt in plastic sheeting outer layer or woven straw carries out insulated curing, obtain cast-in-site
RPC material wall.
Embodiment 2
The preparation method of RPC material in situ cast provided herein, specifically includes following steps：
(1), the non-naphthalene water reducers of 30kg are put into the 60kg water measured and dissolved, it is standby；
(2) the quartz sand 1000kg and steel fibre for a diameter of 0.3mm that particle diameter is 1.25mm, are added simultaneously into mixer
60kg, stirring add P.O52.5 Portland cement 700kg to uniform in 4~5 minutes, and average grain diameter is 0.31 μm of SiO2
Admixture 170kg (SiO285%) content is more than, to standby material that is uniform, adding in step (1), stirring is within 3~6 minutes for stirring
It is even to obtain RPC mix, drained into the container on ground, mixing speed is 45 revs/min；
(3) with (3) the step of embodiment 1；
(4) with (4) the step of embodiment 1.
Embodiment 3
The preparation method of RPC material in situ cast provided herein, specifically includes following steps：
(1), the non-naphthalene water reducers of 750kg are put into the 190kg water measured and dissolved, it is standby；
(2) quartz sand 1400kg and the steel for, adding a diameter of 0.20mm that particle diameter is 0.80mm simultaneously into mixer are fine
100kg is tieed up, stirring adds P.O52.5 Portland cement 800kg to uniform in 4~5 minutes, and average grain diameter is 0.4 μm
SiO2Admixture 250kg (SiO285%) content is more than, stirring is stirred for 3~6 minutes to standby material that is uniform, adding in step (1)
Mix and uniformly obtain RPC mix, drained into the container on ground, mixing speed is 80 revs/min；
(3) with (3) the step of embodiment 1；
(4) with (4) the step of embodiment 1.
Embodiment 4
The preparation method of RPC material in situ cast provided herein, specifically includes following steps：
(1), the non-naphthalene water reducers of 50kg are put into the 150kg water measured and dissolved, it is standby；
(2) quartz sand 1200kg and the steel for, adding a diameter of 0.24mm that particle diameter is 0.60mm simultaneously into mixer are fine
250kg is tieed up, stirring adds P.O42.5 Portland cement 900kg to uniform in 4~5 minutes, and average grain diameter is 0.35 μm
SiO2Admixture 200kg (SiO285%) content is more than, stirring is stirred for 3~6 minutes to standby material that is uniform, adding in step (1)
Mix and uniformly obtain RPC mix, drained into the container on ground, mixing speed is 55 revs/min；
(3) with (3) the step of embodiment 1；
(4) with (4) the step of embodiment 1.
The RPC strength of materials test of the cast-in-site of experimental example 1
Wall prepared by the RPC material provided the embodiment of the present application 1-4 carry out compression strength and
The test of rupture strength, experimental result are as shown in table 1.
Comparative example is Portland cement concrete, and composition is as follows：Water 204kg, P.O42.5 cement 434kg, middle sand
583kg, 5~40mm of particle diameter stone 1254kg.
The strength test results of table 1
Test result indicates that prepared by the preparation method of RPC material in situ cast provided herein
Materials for wall, there is high intensity, high tenacity, high-durability, better than the concrete of the cast-in-site of general type.
Although illustrate and describing the present invention with specific embodiment, but it will be appreciated that various embodiments above is only used
To illustrate technical scheme, rather than its limitations；It will be understood by those within the art that：Without departing substantially from this hair
In the case of bright spirit and scope, the technical scheme described in foregoing embodiments can be modified, or to wherein
Some or all of technical characteristic carries out equivalent substitution；And these are changed or are replaced, the essence of appropriate technical solution is not made
Depart from the scope of various embodiments of the present invention technical scheme；It is, therefore, intended that include belonging to the present invention in the following claims
In the range of all these substitutions and modifications.
Claims (10)
1. a kind of preparation method of RPC material in situ cast, it is characterised in that mainly include the following steps that：
Fed and stirred in the ratio and charge order of raw material, RPC mixture is obtained, by reactive powder
Concrete mix scene injection mould and vibration compacting, are conserved after vibrating, are stripped after reaching demoulding strength, and protected
Water natural curing, obtain the RPC material.
2. the preparation method of RPC material in situ cast according to claim 1, it is characterised in that described
The process that charge order is fed and stirred specifically includes following steps：
Quartz sand, steel fibre, cement, SiO are should be according to charge order2Admixture, water, the order of concrete admixture, first by stone
Sand, steel fibre, cement and SiO2Admixture stirs 4~5 minutes in advance, and then plus water, concrete admixture are stirred for 3~6 points
Clock；
Preferably, the speed of the stirring is 45~80 revs/min, and the preferred stirring is grasped using forced mixer
Make.
3. the preparation method of RPC material in situ cast according to claim 1, it is characterised in that described
Raw material, including the following component according to mass fraction meter：
700~1000 parts of Portland cement, SiO2170~250 parts of admixture, 1000~1400 parts of quartz sand, outside concrete
Add 60~140 parts of 30~75 parts of agent, 110~190 parts of water and steel fibre；
Preferably, water-cement ratio≤0.2 of the RPC.
4. the preparation method of RPC material in situ cast according to claim 3, it is characterised in that described
Portland cement is one or two kinds of combination in P.O 42.5 or P.O 52.5.
5. the preparation method of RPC material in situ cast according to claim 3, it is characterised in that described
SiO2The average grain diameter of admixture is 0.31~0.5 μm.
6. the preparation method of RPC material in situ cast according to claim 3, it is characterised in that described
The particle diameter of quartz sand is 0.16~1.25mm.
7. the preparation method of RPC material in situ cast according to claim 3, it is characterised in that described
A diameter of 0.16~0.3mm of steel fibre.
8. the preparation method of RPC material in situ cast according to claim 1, it is characterised in that described
By the process of RPC scene injection mould and vibration compacting, following steps are specifically included：
RPC mixture after stirring irrigated in 30 minutes to be finished, component continuous pouring, the largest interval time
It should be no more than 6 minutes, and RPC mixture is 10~30 DEG C in the temperature of stirring, transport, cast and component；
Preferably, the vibration compacting specifically includes following steps：According to the geomery of structure using form vibrator or
Person's vibrating spear vibratory compaction is molded；
Preferably, the material of the mould is one kind in steel or engineering plastics.
9. the preparation method of RPC material in situ cast according to claim 1, it is characterised in that described
The process of water conservation natural curing, specifically includes following steps：
With covered rearing with plastic film water conservation, and cover cotton-wadded quilt in plastic sheeting outer layer or woven straw carries out insulated curing.
10. prepared by the preparation method of the RPC material in situ cast according to claim any one of 1-9
RPC material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149527A (en) * | 2018-01-31 | 2018-06-12 | 周之琪 | A kind of steel spring vibration isolator PRC outer barrels for floating track plates |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050090A (en) * | 2007-05-11 | 2007-10-10 | 北京工业大学 | Steel slag powder concrete of active powder |
| CN101570420A (en) * | 2009-05-22 | 2009-11-04 | 北京惠诚基业工程技术有限责任公司 | Manufacturing technique of reactive power concrete products |
| CN101823860A (en) * | 2010-05-25 | 2010-09-08 | 陈耀强 | High-strength active powder fiber concrete slab and manufacturing method thereof |
| CN102850011A (en) * | 2011-07-01 | 2013-01-02 | 北京建筑材料科学研究总院有限公司 | Technological process for preparing active powder concrete by using iron tailing |
| CN103381621A (en) * | 2012-05-04 | 2013-11-06 | 中铁九局集团有限公司桥梁分公司 | Production process for active powder concrete product |
| CN104310879A (en) * | 2014-09-28 | 2015-01-28 | 湖北正茂新材料科技有限公司 | Reactive powder concrete (RPC) and preparation method thereof |
| CN105801017A (en) * | 2014-12-29 | 2016-07-27 | 中国建筑材料科学研究总院 | Normal-temperature maintenance-type active powder concrete and preparation method thereof |
-
2017
- 2017-10-11 CN CN201710940240.3A patent/CN107618094A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050090A (en) * | 2007-05-11 | 2007-10-10 | 北京工业大学 | Steel slag powder concrete of active powder |
| CN101570420A (en) * | 2009-05-22 | 2009-11-04 | 北京惠诚基业工程技术有限责任公司 | Manufacturing technique of reactive power concrete products |
| CN101823860A (en) * | 2010-05-25 | 2010-09-08 | 陈耀强 | High-strength active powder fiber concrete slab and manufacturing method thereof |
| CN102850011A (en) * | 2011-07-01 | 2013-01-02 | 北京建筑材料科学研究总院有限公司 | Technological process for preparing active powder concrete by using iron tailing |
| CN103381621A (en) * | 2012-05-04 | 2013-11-06 | 中铁九局集团有限公司桥梁分公司 | Production process for active powder concrete product |
| CN104310879A (en) * | 2014-09-28 | 2015-01-28 | 湖北正茂新材料科技有限公司 | Reactive powder concrete (RPC) and preparation method thereof |
| CN105801017A (en) * | 2014-12-29 | 2016-07-27 | 中国建筑材料科学研究总院 | Normal-temperature maintenance-type active powder concrete and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149527A (en) * | 2018-01-31 | 2018-06-12 | 周之琪 | A kind of steel spring vibration isolator PRC outer barrels for floating track plates |
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Application publication date: 20180123 |