CN106116365A - A kind of high-toughness polypropylene fiber cement composites - Google Patents
A kind of high-toughness polypropylene fiber cement composites Download PDFInfo
- Publication number
- CN106116365A CN106116365A CN201610504934.8A CN201610504934A CN106116365A CN 106116365 A CN106116365 A CN 106116365A CN 201610504934 A CN201610504934 A CN 201610504934A CN 106116365 A CN106116365 A CN 106116365A
- Authority
- CN
- China
- Prior art keywords
- cement
- toughness
- polypropylene fiber
- fiber cement
- composites
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0616—Macromolecular compounds fibrous from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B16/0625—Polyalkenes, e.g. polyethylene
- C04B16/0633—Polypropylene
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of high-toughness polypropylene fiber cement composites, its constituent comprises: cement 100 1000 kg/m3, polypropylene fibre 20 30 kg/m3, flyash 400 700 kg/m3, additive 7 kg/m3, water 350 400 kg/m3.This high tenacity cement-base composite material has high tenacity, moderate finite deformation ability and higher tensile strength, and possesses the multiple crack growth of micro-cracks and quasi-strain hardening feature under stretching action, thus can be effectively improved ductility and the durability of structure.
Description
Technical field
The invention belongs to building material field, relate to a kind of fiber cement composites.
Background technology
Concrete as most widely used a kind of cement-base composite material, possess comprcssive strength height, abundant raw material source,
The advantages such as technique is simple.Its composition is mainly formed according to proportioning stirring according to demand by cement, aggregate, additive and water.But by
Lack high tenacity in concrete material itself and cause the brittle break under extreme load, the normal load caused because of durability deficiency
The deficiency of the aspects such as lower destruction and shortage sustainability limits the application of this material.Now widely used cement based is combined
The obvious shortcoming of material is that bending resistance, tension, antidetonation and impact strength be relatively low, poor durability.Mix from the fiber sixties in last century
The generation of solidifying soil, improves its toughness by adding the material such as steel fibre, polymer fiber in normal concrete, and crack resistance is with disconnected
Split toughness index to be obviously improved compared with normal concrete, but limit tensile strain can only achieve 0.02% to 0.03%,
The toughness of cement-base composite material is improved limited.Therefore, carry while keeping the Crack Control ability of cement-base composite material
High toughness of material becomes the important research target in this area.
In order to realize above-mentioned target, different types of high polymer fiber be added in cement-base composite material with
Toughness reinforcing.In recent years, the polyethylene fiber peacekeeping vinal of high-strength and high-modulus is successively joined in cement-base composite material and is obtained
Arrive extensive application, and achieve good result.But owing to polyethylene and the high cost of vinal make its distance
Industrialization still also has longer distance away from industrialization, and high performance-price ratio will become following the sending out of high-tenacity fiber cement-base composite material
One of exhibition direction.With the polyethylene being used mostly now compared with vinal, polypropylene fibre is more soft, cost more
Dispersion low, easier, thus possess more preferable workability.In addition, due to the hydrophobicity of polypropylene fibre and nonpolar
Material essence, and it will not be with the combination on cement based generation chemical reaction, thus PP fiber reinforced cement based composites
More excellent materials ' durability is possessed under alkaline environment.The combined process in this materials'use surface is to increase surface roughness
Polypropylene fibre, its volume volume is 2.0% ~ 4.0%, is mainly used in realizing the strain hardening effect of cement-base composite material
Should.Polypropylene fibre length 12 mm used, fiber number 13 dtex, elastic modelling quantity 5 GPa, tensile strength 482 MPa.
Summary of the invention
The invention provides a kind of PP fiber reinforced cement based composites, this material possesses higher toughness.
For reaching above-mentioned purpose, technical solution of the present invention is a kind of PP fiber reinforced cement based composites, and it forms into
Divide and include: cement 100-1000 kg/m3, polypropylene fibre 20-30 kg/m3, flyash 400-700 kg/m3, additive 7
kg/m3, water 350-400 kg/m3。
The beneficial effects of the present invention is: the cement-base composite material of the present invention has many seams of micro-cracks under stretch
Cracking and quasi-strain hardening feature, have bigger deformability, higher tensile strength and the cement-base composite material of toughness, energy
That the most effectively suppresses crack carries out the peeling with protective layer, improves bending strength and the shearing strength of structure simultaneously.
In one preferred embodiments of the present invention, farther including, described cement is Portland cement, described ordinary silicon
The intensity rank of acid salt cement is 42.5.
In one preferred embodiment of the present invention, farther including, described flyash is the I in cement and concrete
Level flyash.
The invention has the beneficial effects as follows: one, the cement-base composite material of the present invention have higher tensile strength and tough
Property；Two, the cement-base composite material of the present invention with the addition of high efficiency water reducing agent, it is possible to be effectively improved the mobility of this material.
Accompanying drawing illustrates: Fig. 1 is the scale diagrams of uniaxial tension test specimen used in the present invention.
Detailed description of the invention
Technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described example is only
The a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained on the premise of not making creative work, broadly falls into the scope of protection of the invention.
Embodiment 1: disclosing a kind of PP fiber reinforced cement based composites in the present embodiment, this composite has relatively
High tensile strength and toughness.
The constituent of above-mentioned PP fiber reinforced cement based composites is as shown in table 1:
Formula table in table 1 embodiment 1.
The basic mechanical performance experimental result of embodiment 1 gained concrete is as follows:
(1) tensile strength
Sample dimensions: as shown in Figure 1
Test method: uniaxial tension
Tensile strength: 3.7 MPa
Ultimate tensile strength: 2.7 %
(2) comprcssive strength
Sample dimensions: diameter 100 mm, high 200 mm cylinders
Test method: uniaxial compression
Comprcssive strength: 33.6 MPa
Test result indicate that, the toughness PP fiber reinforced cement base of gained of the present invention meets material and has good strain hardening spy
Levy.
Embodiment 2: disclosing a kind of PP fiber reinforced cement based composites in the present embodiment, this composite has relatively
High tensile strength and toughness.
The constituent of above-mentioned PP fiber reinforced cement based composites is as shown in table 2:
Formula table in table 2 embodiment 2.
The basic mechanical performance experimental result of embodiment 2 gained concrete is as follows:
(1) tensile strength
Sample dimensions: as shown in Figure 1
Test method: uniaxial tension
Tensile strength: 5.1 MPa
Ultimate tensile strength: 3.0 %
(2) comprcssive strength
Sample dimensions: diameter 100 mm, high 200 mm cylinders
Test method: uniaxial compression
Comprcssive strength: 31.9 MPa
Test result indicate that, the toughness PP fiber reinforced cement base of gained of the present invention meets material and has good strain hardening spy
Levy.
Embodiment 3: disclosing a kind of PP fiber reinforced cement based composites in the present embodiment, this composite has relatively
High tensile strength and toughness.
The constituent that above-mentioned PP fiber reinforced cement base meets material is as shown in table 3:
Recipe ratio in table 3 embodiment 3.
The basic mechanical performance experimental result of embodiment 3 gained concrete is as follows:
(1) tensile strength
Sample dimensions: as shown in Figure 1
Test method: uniaxial tension
Tensile strength: 4.4 MPa
Ultimate tensile strength: 3.6 %
(2) comprcssive strength
Sample dimensions: diameter 100 mm, high 200 mm cylinders
Test method: uniaxial compression
Comprcssive strength: 24.1 MPa
Test result indicate that, the toughness PP fiber reinforced cement base of gained of the present invention meets material and has good strain hardening spy
Levy.
Claims (5)
1. a high-toughness polypropylene fiber cement composites, comprises the composition of following Unit Weight: cement 100-1000
kg/m3, polypropylene fibre 20-30 kg/m3, flyash 400-700 kg/m3, additive 7 kg/m3, water 350-400 kg/m3。
2. according to a kind of high-toughness polypropylene fiber cement composites belonging to claim 1, it is characterised in that described poly-
Tacryl is that fiber surface is by the company's silk polypropylene fibre after coarse process, described fibre length 12 mm, fiber number 13
Dtex, elastic modelling quantity 5 GPa, hot strength is 450-500 MPa.
A kind of high-toughness polypropylene fiber cement composites the most according to claim 1, it is characterised in that described water
Mud is Portland cement, and the intensity rank of described portland cement is 42.5.
A kind of high-toughness polypropylene fiber cement composites the most according to claim 1, it is characterised in that described powder
Coal ash is the I level flyash in cement and concrete.
A kind of high-toughness polypropylene fiber cement composites the most according to claim 1, it is characterised in that outside described
Add agent to be made up of with high efficiency water reducing agent air entraining agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610504934.8A CN106116365A (en) | 2016-07-01 | 2016-07-01 | A kind of high-toughness polypropylene fiber cement composites |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610504934.8A CN106116365A (en) | 2016-07-01 | 2016-07-01 | A kind of high-toughness polypropylene fiber cement composites |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106116365A true CN106116365A (en) | 2016-11-16 |
Family
ID=57467638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610504934.8A Pending CN106116365A (en) | 2016-07-01 | 2016-07-01 | A kind of high-toughness polypropylene fiber cement composites |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106116365A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935470A (en) * | 2017-11-28 | 2018-04-20 | 南通理工学院 | A kind of high tenacity cracking resistance cement concrete and preparation method thereof |
| CN109879645A (en) * | 2019-01-31 | 2019-06-14 | 西南交通大学 | Lightweight concrete |
| CN110668764A (en) * | 2019-11-21 | 2020-01-10 | 吉林大学 | Formula and preparation technology of domestic polypropylene fiber cement-based material |
| CN111272790A (en) * | 2020-02-21 | 2020-06-12 | 河海大学 | Method for determining influence of polypropylene fiber distribution on tensile property of high-toughness concrete |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891417A (en) * | 2010-01-20 | 2010-11-24 | 沈阳美洋建设项目管理有限公司 | High-toughness polypropylene fiber reinforced cement-based composite material and preparation method thereof |
| CN103253918A (en) * | 2013-04-24 | 2013-08-21 | 中国石油大学(北京) | Self-repairing anti-shrink cement based composite material |
| CN103508705A (en) * | 2013-08-30 | 2014-01-15 | 江南大学 | Ejection type ductile PP fiber strengthened cement base composite material and preparation method thereof |
| CN103664090A (en) * | 2013-12-19 | 2014-03-26 | 中国中材国际工程股份有限公司 | Fiber-hybrid high-ductility cement-based composite material and preparation method thereof |
-
2016
- 2016-07-01 CN CN201610504934.8A patent/CN106116365A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891417A (en) * | 2010-01-20 | 2010-11-24 | 沈阳美洋建设项目管理有限公司 | High-toughness polypropylene fiber reinforced cement-based composite material and preparation method thereof |
| CN103253918A (en) * | 2013-04-24 | 2013-08-21 | 中国石油大学(北京) | Self-repairing anti-shrink cement based composite material |
| CN103508705A (en) * | 2013-08-30 | 2014-01-15 | 江南大学 | Ejection type ductile PP fiber strengthened cement base composite material and preparation method thereof |
| CN103664090A (en) * | 2013-12-19 | 2014-03-26 | 中国中材国际工程股份有限公司 | Fiber-hybrid high-ductility cement-based composite material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| "《泡沫混凝土》" * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935470A (en) * | 2017-11-28 | 2018-04-20 | 南通理工学院 | A kind of high tenacity cracking resistance cement concrete and preparation method thereof |
| CN109879645A (en) * | 2019-01-31 | 2019-06-14 | 西南交通大学 | Lightweight concrete |
| CN110668764A (en) * | 2019-11-21 | 2020-01-10 | 吉林大学 | Formula and preparation technology of domestic polypropylene fiber cement-based material |
| CN111272790A (en) * | 2020-02-21 | 2020-06-12 | 河海大学 | Method for determining influence of polypropylene fiber distribution on tensile property of high-toughness concrete |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Pakravan et al. | Synthetic fibers for cementitious composites: A critical and in-depth review of recent advances | |
| CN104591634B (en) | Microdilatancy fiber reinforced concrete and preparation method thereof | |
| Banthia et al. | Flexural response of hybrid fiber-reinforced cementitious composites | |
| CN106242429B (en) | A kind of high tenacity concrete reinforced by assorted fiber and preparation method thereof | |
| CN101665342B (en) | High-tenacity crack-control impervious fiber concrete | |
| CN106278026B (en) | A kind of cement-base composite material and preparation method thereof | |
| CN106116365A (en) | A kind of high-toughness polypropylene fiber cement composites | |
| CN103819155A (en) | Ultra-high molecular weight polyethylene fiber concrete and preparation method thereof | |
| CN106396548A (en) | Impact-resistant and corrosion-proof cement-based composite material and preparation method thereof | |
| CN107721317A (en) | Basalt and polyvinyl alcohol mix fiber concrete and preparation method | |
| CN101337783A (en) | Composite fiber for whole time anti-cracking for concrete | |
| CN111704405B (en) | Sisal hemp nano cellulose ultra-high toughness concrete and preparation method thereof | |
| CN108164216A (en) | A kind of answering for more than strength grade C100 mixes fiber concrete | |
| CN104591633A (en) | Manufacturing method of polyacrylonitrile fiber impermeable concrete | |
| CN104446260A (en) | Polypropylene fiber sprayed concrete | |
| CN105060779A (en) | Fiber reinforced cement based composite material for reinforcing reinforced concrete structure | |
| WO2012115500A1 (en) | A green engineered cementitious composite | |
| CN110698153B (en) | Pavement crack-resistant concrete and application thereof in garden construction | |
| CN104591664B (en) | Long-life concrete for steel-mixed combination beam hogging moment area and preparation method thereof | |
| CN110510948A (en) | A kind of high performance lightweight aggregate concrete and preparation method thereof | |
| CN102452790A (en) | Hydrophilic mineral composite fibers and preparation method thereof | |
| Manzi et al. | NEW COMPOSITE PANELS WITH HEMP HURDS FOR SUSTAINABLE BUILDINGS Extended abstract | |
| CN109293304A (en) | High ductility cement-based material and preparation method thereof | |
| CN112551998A (en) | Anti-cracking high-strength sand aerated building block and preparation method thereof | |
| CN100396638C (en) | Concrete additive, its preparing method and concrete made thereby |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161116 |