CN107010888A - A kind of powder compound modified enhanced freeze proof impervious crack resistance type concrete of polypropylene fibre rubber and preparation method thereof - Google Patents
A kind of powder compound modified enhanced freeze proof impervious crack resistance type concrete of polypropylene fibre rubber and preparation method thereof Download PDFInfo
- Publication number
- CN107010888A CN107010888A CN201710328377.3A CN201710328377A CN107010888A CN 107010888 A CN107010888 A CN 107010888A CN 201710328377 A CN201710328377 A CN 201710328377A CN 107010888 A CN107010888 A CN 107010888A
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- Prior art keywords
- powder
- adds
- rubber
- polypropylene fibre
- crack resistance
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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
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1051—Organo-metallic compounds; Organo-silicon compounds, e.g. bentone
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of powder compound modified enhanced freeze proof impervious crack resistance type concrete of polypropylene fibre rubber, and its preparation technology, it is characterised in that, rubber powder is ground, sieved, plus NaOH solution, immersion treatment, filters, is washed to neutrality, add running water, immersion, after filtering, plus KH570 ethanol solution, immersion treatment, dried after filtering at shady and cool drying, obtain modified rubber powder；Nano silicon is mixed with polycarboxylate water-reducer, plus running water, mechanical dispersion, finely dispersed suspension is made；Rubble, polypropylene fibre are poured into mixer and stirred, cement, modified rubber powder is added, dry mixing obtains dispersed dry powder, adds nano silicon suspension, continues to stir, adds steel fibre, stir to obtain mixture；Mixture is poured on iron plate, is stirred for, quickly concrete mix is fitted into mould, jolt ramming, form removal is put between conserving and conserved, obtains required concrete.
Description
Technical field
The present invention relates to concrete field, and in particular to a kind of polypropylene fibre-rubber is powder compound modified enhanced freeze proof
Impervious crack resistance type concrete, and its preparation technology.
Background technology
Novel super-high strength cement-based material composite is super with its excellent resistance to compression, bending resistance, tension, wear-resisting, corrosion-resistant etc.
Strong durability performance, is the key technology for realizing Sustainable Construction Industry.For the performance of high-strength and ultra-high-strength cement-based composites
Go out that fragility is big, shrink big, a series of outstanding problems such as early-age crack is serious.
Zhang Yu is in its master thesis《Ultrastrength cement based composites and its product research》In, utilize natural river
The mineral admixtures such as sand, flyash, miberal powder, silicon ash, and different addition quantity steel fibre prepare serial Ultrastrength cement base composite wood
Material, can be obviously improved its workability, its workability can also be improved by mixing high efficiency water reducing agent when single fly ash or miberal powder.But deposit
It is not enough in intensity, mechanical property.
The content of the invention
The present invention solves the technical problem of providing, a kind of polypropylene fibre-rubber is powder compound modified enhanced freeze proof
Impervious crack resistance type concrete and its preparation technology, according to concrete prepared by the technique have good freeze proof impervious crack resistance,
High intensity, high tenacity.
The technical problems to be solved by the invention are realized using following technical scheme：
A kind of preparation method of the powder compound modified enhanced freeze proof impervious crack resistance type concrete of polypropylene fibre-rubber, its feature
It is, carries out according to the following steps：
A. 10-20 parts by weight of rubber powder is ground, crosses 30-60 mesh sieves, 1:5-10 adds NaOH solution, immersion treatment 6-
8h, filters, is washed to neutrality, then 1:10-15 adds running water, soaks 2-3h, after filtering, 1:5-10 adds KH570 ethanol
Solution, immersion treatment 3-4h dries at shady and cool drying after filtering, obtains modified rubber powder；
B. high-speed stirred dispersion method：3-5 parts by weight nano silicon is mixed with 0.1-0.2 parts by weight polycarboxylate water-reducers,
1:10-15 adds running water, carries out mechanical dispersion 20-40min with homogenizer, finely dispersed nano silicon is made
Suspension；
C. 10-20 parts by weight rubble, 1-2 parts by weight of polypropylene fibers are poured into and 1-2min is stirred in mixer, add 50-60
Gained modified rubber powder in parts by weight of cement, a, dry mixing 3-5min obtains dispersed dry powder, adds gained nanometer titanium dioxide in b
Silicon suspension, continues to stir 5-10min, adds 2-4 parts by weight steel fibres, stir 5-10min, obtain mixture；
D. gained mixture in c is poured on iron plate, is stirred for 5-10min, quickly concrete mix is fitted into mould,
Form removal after jolt ramming on a vibration table, 1-2d, is put between conserving and carries out after maintenance 6-9d, obtain required concrete.
Wherein, NaOH solution mass concentration described in step a is 15-20%, and KH570 ethanol solution concentration is 1-2%.Step
High-speed stirred is 3000-4000rpm described in rapid b, c.Curing temperature is 20-25 DEG C, relative humidity between being conserved described in step d
For 90-95%.
The reaction mechanism of the present invention is as follows：
Nano silicon easily accumulates agglomerating, and the scattered inequality of nano particle can be caused by being directly added into, and influence the entirety of material property
Stability, the scattering problem of nano silicon is handled using high-speed stirred process for dispersing, is obtained by filling nano silicon
To the high performance cement-based material with high-strength, high-ductility and high-durability.
Composite modified processing is carried out to rubber powder by NaOH-KH570, rubber powder can be strengthened and bonding for cement is made
With rubber powder forms Emulsoid-film in hydrated cementitious and introduces the frost resistance that gas improves concrete；Polypropylene fibre
Form and be evenly distributed and blind bore gap in inside concrete, form the fiber net structure for spreading all over concrete substrate, effectively
Ground improves the mechanical property and durability of the powder compound modified concrete of polypropylene fiber-rubber, while improving concrete
Impervious cracking resistance.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Specific embodiment is closed, the present invention is expanded on further.
Embodiment
A kind of preparation method of the powder compound modified enhanced freeze proof impervious crack resistance type concrete of polypropylene fibre-rubber, its
It is characterised by, carries out according to the following steps：
A. 20kg rubber powders are ground, crosses 60 mesh sieves, 1:5 add NaOH solutions, immersion treatment 6h, in filtering, being washed to
Property, then 1:10 add running water, soak 2h, after filtering, 1:5 add KH570 ethanol solution, immersion treatment 3h, after filtering
Cool place is dried at drying, and obtains modified rubber powder；
B. high-speed stirred dispersion method：3kg nano silicons are mixed with 0.1kg polycarboxylate water-reducers, 1:10 add originally
Water, mechanical dispersion 30min is carried out with homogenizer, and finely dispersed nano silicon suspension is made；
C. 20kg rubbles, 2kg polypropylene fibres are poured into and 2min is stirred in mixer, add gained in 60kg cement, a modified
Rubber powder, dry mixing 5min obtains dispersed dry powder, adds gained nano silicon suspension in b, continues to stir 10min,
3kg steel fibres are added, 10min is stirred, obtains mixture；
D. gained mixture in c is poured on iron plate, is stirred for 5min, quickly concrete mix is fitted into mould, shaking
Form removal after jolt ramming on dynamic platform, 1d, is put between conserving and carries out after maintenance 9d, obtain required concrete.
Wherein, the ethanol solution concentration that NaOH solution mass concentration described in step a is 15%, KH570 is 2%.Step b, c
Described in high-speed stirred be 3500rpm.Curing temperature is 25 DEG C between being conserved described in step d, and relative humidity is 90%.
Claims (5)
1. a kind of powder compound modified enhanced freeze proof impervious crack resistance type concrete of polypropylene fibre-rubber, it is characterised in that：
Rubber powder is ground, sieved, plus NaOH solution, immersion treatment, filter, be washed to neutrality, add running water, soak
Bubble, after filtering, plus KH570 ethanol solution, immersion treatment dries at shady and cool drying after filtering, obtains modified rubber powder；It will receive
Rice silica is mixed with polycarboxylate water-reducer, plus running water, mechanical dispersion, and finely dispersed suspension is made；By rubble, gather
Tacryl is poured into mixer and stirred, and adds cement, modified rubber powder, and dry mixing obtains dispersed dry powder, adds nanometer two
Silica suspension, continues to stir, adds steel fibre, stir to obtain mixture；Mixture is poured on iron plate, is stirred for, soon
Concrete mix is fitted into mould by speed, jolt ramming, form removal, is put between conserving and is conserved, obtains required concrete.
2. the powder compound modified enhanced freeze proof impervious crack resistance type of a kind of polypropylene fibre-rubber according to claim 1 is mixed
Coagulate the preparation method of soil, it is characterised in that carry out according to the following steps：
A. 10-20 parts by weight of rubber powder is ground, crosses 30-60 mesh sieves, 1:5-10 adds NaOH solution, immersion treatment 6-
8h, filters, is washed to neutrality, then 1:10-15 adds running water, soaks 2-3h, after filtering, 1:5-10 adds KH570 ethanol
Solution, immersion treatment 3-4h dries at shady and cool drying after filtering, obtains modified rubber powder；
B. high-speed stirred dispersion method：3-5 parts by weight nano silicon is mixed with 0.1-0.2 parts by weight polycarboxylate water-reducers,
1:10-15 adds running water, carries out mechanical dispersion 20-40min with homogenizer, finely dispersed nano silicon is made
Suspension；
C. 10-20 parts by weight rubble, 1-2 parts by weight of polypropylene fibers are poured into and 1-2min is stirred in mixer, add 50-60
Gained modified rubber powder in parts by weight of cement, a, dry mixing 3-5min obtains dispersed dry powder, adds gained nanometer titanium dioxide in b
Silicon suspension, continues to stir 5-10min, adds 2-4 parts by weight steel fibres, stir 5-10min, obtain mixture；
D. gained mixture in c is poured on iron plate, is stirred for 5-10min, quickly concrete mix is fitted into mould,
Form removal after jolt ramming on a vibration table, 1-2d, is put between conserving and carries out after maintenance 6-9d, obtain required concrete.
3. the powder compound modified enhanced freeze proof impervious crack resistance type of a kind of polypropylene fibre-rubber according to claim 2 is mixed
Coagulate the preparation method of soil, it is characterised in that NaOH solution mass concentration described in step a is 15-20%, KH570 ethanol solution
Concentration is 1-2%.
4. the powder compound modified enhanced freeze proof impervious crack resistance type of a kind of polypropylene fibre-rubber according to claim 2 is mixed
Coagulate the preparation method of soil, it is characterised in that high-speed stirred described in step b, c is 3000-4000rpm.
5. the powder compound modified enhanced freeze proof impervious crack resistance type of a kind of polypropylene fibre-rubber according to claim 2 is mixed
Coagulate the preparation method of soil, it is characterised in that curing temperature is 20-25 DEG C between being conserved described in step d, and relative humidity is 90-
95%。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710328377.3A CN107010888A (en) | 2017-05-11 | 2017-05-11 | A kind of powder compound modified enhanced freeze proof impervious crack resistance type concrete of polypropylene fibre rubber and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710328377.3A CN107010888A (en) | 2017-05-11 | 2017-05-11 | A kind of powder compound modified enhanced freeze proof impervious crack resistance type concrete of polypropylene fibre rubber and preparation method thereof |
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| Publication Number | Publication Date |
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| CN107010888A true CN107010888A (en) | 2017-08-04 |
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| CN201710328377.3A Pending CN107010888A (en) | 2017-05-11 | 2017-05-11 | A kind of powder compound modified enhanced freeze proof impervious crack resistance type concrete of polypropylene fibre rubber and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107805011A (en) * | 2017-11-21 | 2018-03-16 | 临沂大学 | A kind of rubber and plastic concrete and preparation method thereof |
| CN108002784A (en) * | 2017-12-28 | 2018-05-08 | 安徽宏实光机电高科有限公司 | A kind of high-strength concrete of modified polypropylene fiber-steel fibre doping and preparation method thereof |
| CN108033740A (en) * | 2018-01-26 | 2018-05-15 | 郑州大学 | A kind of high compressive strength Rubber Concrete and preparation method thereof |
| CN108191339A (en) * | 2018-01-26 | 2018-06-22 | 郑州大学 | A kind of high tensile splitting strength Rubber Concrete and preparation method thereof |
| CN108484037A (en) * | 2018-04-04 | 2018-09-04 | 国网河南省电力公司电力科学研究院 | It is a kind of to utilize high-strength durable concrete and preparation method thereof made from retired composite insulator modified silicon rubber |
| CN109437729A (en) * | 2018-10-30 | 2019-03-08 | 蚌埠市方阵商品混凝土有限公司 | A kind of freeze proof anti-crack concrete |
| CN111423186A (en) * | 2020-05-07 | 2020-07-17 | 山东大学 | Impermeable concrete added with polypropylene fibers and waste tire rubber particles and preparation method thereof |
| CN111847970A (en) * | 2020-06-17 | 2020-10-30 | 江苏克裂特新材料有限公司 | Preparation and application of concrete toughening and anti-permeability additive |
| CN112661457A (en) * | 2020-12-25 | 2021-04-16 | 武汉理工大学 | Polypropylene fiber modified rubber concrete and preparation method thereof |
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| CN102992718A (en) * | 2012-11-26 | 2013-03-27 | 肥西县皖西水泥制品有限公司 | High-toughness inspection well concrete and method for preparing same |
| CN104961420A (en) * | 2015-06-19 | 2015-10-07 | 盐城工学院 | Anti-seismic wall material and method for preparing same |
| CN105060785A (en) * | 2015-08-05 | 2015-11-18 | 太原理工大学 | Waste polypropylene fiber rubber recycled concrete and preparation method thereof |
| CN106007589A (en) * | 2016-05-19 | 2016-10-12 | 西京学院 | Preparation method of light-weight and high-strength concrete containing nano-silica |
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| CN102992718A (en) * | 2012-11-26 | 2013-03-27 | 肥西县皖西水泥制品有限公司 | High-toughness inspection well concrete and method for preparing same |
| CN104961420A (en) * | 2015-06-19 | 2015-10-07 | 盐城工学院 | Anti-seismic wall material and method for preparing same |
| CN105060785A (en) * | 2015-08-05 | 2015-11-18 | 太原理工大学 | Waste polypropylene fiber rubber recycled concrete and preparation method thereof |
| CN106007589A (en) * | 2016-05-19 | 2016-10-12 | 西京学院 | Preparation method of light-weight and high-strength concrete containing nano-silica |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107805011A (en) * | 2017-11-21 | 2018-03-16 | 临沂大学 | A kind of rubber and plastic concrete and preparation method thereof |
| CN108002784A (en) * | 2017-12-28 | 2018-05-08 | 安徽宏实光机电高科有限公司 | A kind of high-strength concrete of modified polypropylene fiber-steel fibre doping and preparation method thereof |
| CN108033740A (en) * | 2018-01-26 | 2018-05-15 | 郑州大学 | A kind of high compressive strength Rubber Concrete and preparation method thereof |
| CN108191339A (en) * | 2018-01-26 | 2018-06-22 | 郑州大学 | A kind of high tensile splitting strength Rubber Concrete and preparation method thereof |
| CN108484037A (en) * | 2018-04-04 | 2018-09-04 | 国网河南省电力公司电力科学研究院 | It is a kind of to utilize high-strength durable concrete and preparation method thereof made from retired composite insulator modified silicon rubber |
| CN109437729A (en) * | 2018-10-30 | 2019-03-08 | 蚌埠市方阵商品混凝土有限公司 | A kind of freeze proof anti-crack concrete |
| CN111423186A (en) * | 2020-05-07 | 2020-07-17 | 山东大学 | Impermeable concrete added with polypropylene fibers and waste tire rubber particles and preparation method thereof |
| CN111847970A (en) * | 2020-06-17 | 2020-10-30 | 江苏克裂特新材料有限公司 | Preparation and application of concrete toughening and anti-permeability additive |
| CN112661457A (en) * | 2020-12-25 | 2021-04-16 | 武汉理工大学 | Polypropylene fiber modified rubber concrete and preparation method thereof |
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