CN106478007A - The modified cement-based composite of superhigh tenacity fiber-reinforced polymer and preparation method - Google Patents
The modified cement-based composite of superhigh tenacity fiber-reinforced polymer and preparation method Download PDFInfo
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- CN106478007A CN106478007A CN201610826803.1A CN201610826803A CN106478007A CN 106478007 A CN106478007 A CN 106478007A CN 201610826803 A CN201610826803 A CN 201610826803A CN 106478007 A CN106478007 A CN 106478007A
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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
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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
- 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
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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
- 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
- C04B16/0641—Polyvinylalcohols; Polyvinylacetates
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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
- 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
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- 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 present invention relates to the modified cement-based composite of superhigh tenacity fiber-reinforced polymer and preparation method, prepared for raw material by cement, middle sand, polymer emulsion, synthetic polymeric fibers, water reducer, defoamer, thickening agent and water, using formula as below composition：Ingredients weight parts：Cement 100, polymer emulsion (in terms of solid content) 25～35, middle sand 50, water reducer 0.1～0.5, thickening agent 0.1～0.5, water 30～40, synthetic polymeric fibers account for the 2.5% of total composite volume, and defoamer accounts for the 0.05～0.2% of polymer emulsion quality.Compared with prior art, the present invention splits stress at the beginning of having the advantages that the first crack strain of superelevation, higher bending.
Description
Technical field
The invention belongs to building material technical field, especially relate to a kind of superhigh tenacity fiber-reinforced polymer modified water
Cement-based composite material and preparation method.
Background technology
1992, the Univ Michigan-Ann Arbor USA professor Victor C.Li of ACE-MRL utilized fracture mechanics and Micromechanics former
Reason, is systematically designed to cement-base composite material first, adjusted and is optimized, by grinding to stable state cracking and multiple crack growth
Study carefully, theoretically discuss and prepare the cement-base composite material ECC Engineered with superhigh tenacity
The feasibility of Cementitous Composite.Initial ECC is a kind of lifting manipulation referring to, and is developed to today, due to it
Extremely prominent performance in terms of toughness, starts to be referred to as " superhigh tenacity cement-base composite material " (Ultra by some scholars
High Toughness Cementitious Composites, UHTCC), and be defined as：Using short fiber reinforced, and fiber
Volume is less than the 2.5% of total composite volume, and the composite after hardening has significant strain hardening feature, in stretching
A plurality of fine and closely woven crack can be produced, limit tensile strain can stably reach more than 3% under load action.
The former bridge of Hokkaido, Japan three in 2005, employs steel-ECC composite construction, makes this bridge floorings very thin.ECC surpasses
The fine and close feature in high tensile toughness and crack so that floorings deadweight be minimized 40% it is contemplated that the life-span up to 100 years.And
With the former bridge of the U.S. in Hokkaido, after opening, at the left width revolver mark of big pile No. side access bridge, bridge floor produces in succession within 2005
Destroy, be mainly shown as that purt is starched, whiting and cracking etc., find to mat formation internal water accumulation by inquiry, and the ECC of lower floor has crushing existing
As, by indoor load test, in the environment of having water, due to the impact of water pressure, the fatigue life of ECC structure is significantly lower than
Life-span under drying regime.The example of above-mentioned U.S. former bridge, in fact announces this so-called superhigh tenacity cement based composite wood
Material is inappropriate as Ultra-Long Spans steel deck paving package material.
Since the nineties in 20th century, very-high performance fiber reinforced cement-based composite material (UHPCC) or very-high performance fiber
Concrete Structure (Ultra-High Performance Fibre Reinforced Concrete, be abbreviated as UHPFRC) or letter
Claim ultra-high performance concrete (Ultra-High Performance Concrete, be abbreviated as UHPC), become international compound always
The high-end study hotspot of materials industry.This material has very-high performance, can use big across thin-wall construction and to construction weight,
Thickness and performance have on the unique construction of rigors, such as airfield runway, harbour ocean engineering, structural seismic and Nuclear Power Plant Project
Deng.At present, this material enters the industrialization stage from development abroad, but external fewer companies are (as Denmark Densit
Company) product be in monopoly position, not only price is high, and core technology secrecy, such as material prescription, molding and maintaining process
Open source literature is not had to report etc. key technology.Recent years, there is document report UHPFRC proportion design successively, its composition is mainly
Content higher (more than 1000kg/m3) powder (cement and admixture), the sand of modulus of fineness 2.4 about, diameter
0.2mm, length 13mm about steel fibre, 30 μm of diameter, length 8mm about high modulus fibre (as vinal).
The volume volume of wherein steel fibre is generally less than 2.5% (195kg/m3), the volume volume of vinal is generally less than
0.5%.
Ultra-high performance concrete, with its excellent performance, is widely used in the states such as ocean engineering, highway bridge, defence engineering meter
People's livelihood field.Paris, FRA JEAN BOUIN stadium, (is inlayed with 3600 pieces of ultra-high performance concretes prefabricated triangle hollowed-out board
Glass) spread 23000 square metres of roof.(intensity promotes greatly weight to light and handy material, and its weight of equality strength has former material
The 1/4 of material) make super-span housing be simultaneously achieved the perfect knot of the design of light transmission function, artistry design and low deadweight design
Close.Such engineering also has Haneda Airport enlarging runway of the newly-built National Museum of Qatar, Tokyo etc..Haneda Airport is extended
Runway employs the prefabricated plate technique of UHPC, dead load is greatly reduced using its superhigh intensity, therefore reduces building of pile foundation
It is set as this.
Compared with ECC, UHPC has much higher intensity, and the former comprcssive strength is typically in 30～45MPa, the latter's pressure resistance
Degree is generally higher than 100MPa, even as high as 200MPa.But, UHPC with ECC is the same, and its first crack strain is still very little, although
They all show the feature of strain hardening, can produce very big strain before sample fracture, but strain both is from sample
Multiple crack growth.The first amount of deflection of splitting of bend specimen does not improve with the increase of fiber content, although its bending strength and peak value lotus
Amount of deflection during load and crack openings width (CMOD) increase almost linear increase with fibers content.
Mix enhanced superhigh tenacity cement-base composite material (UHTCC) with steel fibre and vinal, the limit should
Become and be similarly from multiple crack growth.
It can be seen that it is desirable to improve the modulus of material by steel fibre, thus reducing practical distortion, it is durable that minimizing cracking causes
Sex chromosome mosaicism, is feasible deforming little application scenario.But the fragility feature due to matrix itself is not changed in, its Initial Cracking
Strain still only has about 100～200 microstrains, therefore, it is possible to it is anticipated that for the larger occasion of deformation ratio, such as Steel Bridge Deck
Pavement material, its endurance issues is similar to ECC material before.
Based on steel plate, pave-load layer mainly follows the deformation of steel plate to the rigidity of paving steel bridge deck composite construction, main performance
For strain controlling state.And it is in close relations with the elastic modelling quantity of material to strain size.Therefore, in the premise keeping suitable intensity
Under, improve toughness and the Initial Cracking strain of matrix material, be only the method solving steel deck paving package material resisting fatigue cracking.Root
According to such understanding, the open CN104944858A (application number of Chinese patent：2015102779274) proposing a kind of high just splitting should
Become fiber-reinforced polymer modification cement composite material and preparation method thereof, it is reached with the first crack strain that bend test records
1000～1400 microstrains.Because pave-load layer thickness is often thicker than steel bridge deck, close to 10 times, Steel Bridge Deck therefore to be followed high
Reach 1000 microstrains, pave-load layer must have more than 10000 microstrain first crack strains, sufficiently large amount of deflection could be produced and follow steel
Bridge floor deforms.
Content of the invention
The purpose of the present invention be exactly provide to overcome the defect that above-mentioned prior art exists a kind of have superelevation just
Split strain, the modified cement-based composite of superhigh tenacity fiber-reinforced polymer and the preparation side of stress are just split in higher bending
Method.
The purpose of the present invention can be achieved through the following technical solutions：
The modified cement-based composite of superhigh tenacity fiber-reinforced polymer, by cement, middle sand, polymer emulsion, synthesis
Polymer fiber, water reducer, defoamer, thickening agent and water prepare for raw material, using formula as below composition：
Ingredients weight parts：Cement 100, polymer emulsion (in terms of solid content) 25～35, middle sand 50, water reducer 0.1～
0.5th, thickening agent 0.1～0.5, water (including contained water in emulsion) 30～40,
Synthetic polymeric fibers account for the 2.5% of total composite volume, defoamer account for polymer emulsion quality 0.05～
0.2%.
Described cement is Portland cement.
Described polymer emulsion is cement mortar modification emulsion, the phenylpropyl alcohol breast being 47%～57% including solid content
Liquid, styrene-butadiene emulsion or pure-acrylic emulsion.
Described synthetic polymeric fibers are vinal.
Preferably, the fibre length of vinal be 10～15mm, 15～25 μm of diameter, tensile strength be 1200～
1500MPa, elastic modelling quantity is 30～50GPa.
Described water reducer is polycarboxylate dehydragent.
Described defoamer is type of latex type defoamer.
Described thickening agent is cellulose ether.
The preparation method of the modified cement-based composite of superhigh tenacity fiber-reinforced polymer, using following steps：
(1) press proportioning raw materials and weigh each component, liquid component is included polymer emulsion, water reducer (solution or be first made into
Solution), thickening agent (if first wiring solution-forming may be answered, otherwise adding as solid constituent) and water pour in agitated kettle, stirring is equal
Even；
(2) solid constituent is included cement, water reducer (pressed powder), thickening agent (pressed powder) and sand mix and blend
Uniformly；
(3) (1) gained liquid mixture is added mixing and stirring in (2), mixing speed is not higher than 140r/min,
Low rate mixing 100-120s；
(4) synthetic polymeric fibers are added in step (3) products therefrom, mixing speed is not higher than 140r/min and stirs at a slow speed
Mix 100-120s, stirring terminates front Deca defoamer, obtains final product the modified cement-based composite of superhigh tenacity fiber-reinforced polymer.
Compared with prior art, the maximum bending strain when 15 DEG C for the epoxy asphalt mixture is 6.37 × 10-3, that is,
0.637%, the modified cement-based composite of superhigh tenacity fiber-reinforced polymer that the present invention obtains bending strain up to 2～
Also will not ftracture when 5%, now bending stress is then up to 7～13MPa, has advantages below：
Have such advantages as：
1st, the cement composite material of the present invention splits stress at the beginning of having the bending first crack strain of superelevation, higher bending.
2nd, this product adds number of polymers, forms continuous film, make the hydrated cementitious of fragility between hydrolysis product of cement
Substantial amounts of thin polymer film " expansion joint " occurs between product, matrix deformability thus substantially improved, i.e. substantial amounts of polymerization
Thing adds makes cement matrix be changed into flexible material from fragile material.
3rd, the fiber that this product adds, mainly effectively transmits stress by bridge effect, so that the bending strength of product is protected
Hold in higher level it is ensured that the thin polymer film in composite can fully deform, make strain under bending strength for the product big
Big raising.
4th, this product is polymer and the modified cement-based material of fiber composite, and material is curved obvious strain hardening when drawing
Phenomenon, more than 7.5MPa, corresponding bending strain is more than 2%, and material will not ftracture, more curved than ordinary cement sill for bending strength
Bent first crack strain improves more than 100 times.
5th, because the raw material of the present invention is all using a large amount of commercially available finished products producing, so raw material is easy to get, it is suitable for
Extensively apply.
Brief description
Fig. 1 is the feature stresses strain curve of product.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1-4 and contrast example
Raw material and specification are shown in Table 1.Material mixture ratio is shown in Table 2.Properties of product are shown in Table 3.The feature stresses strain curve of product
See Fig. 1.
This product be mainly characterized by during tension it may appear that obvious strain hardening phenomenon, that is, with the increase of strain, material
The stress of material slowly rises.From Fig. 1 it is found that when ECC material or UHTCC material tension, during the strain hardening of appearance, should
Stress-strain curve has an obvious fluctuation, representative be material multiple crack growth, and can see during testing or after test
To a series of crackle of specimen surface, and when strain hardening in this product tension, stress-strain diagram is smooth curve, does not have ripple
Dynamic, and in test and after test, all frees from flaw produce.Under same large deformation, this product does not produce crack, then this product
Impermeability be not in be decreased obviously, durability is necessarily substantially more preferable than the ECC material of multiple crack growth or UHTCC material,
Meanwhile, this product still keeps higher bending resistance tension.
Polymer emulsion can significantly improve the deformability of cement-based material, but when volume is excessive, frequently can lead to cement
Declining to a great extent occurs in the rupture strength of sill, and the fiber of high-strength high-elasticity modulus tends to improve the anti-of cement-based material
Folding intensity, and when both compound uses, both advantages tend not to give full play to, i.e. the deformation to cement-based material for the polymer
Performance enhancement effect has weakened, and fiber is decreased obviously to the reinforced effects of cement-based material rupture strength, and most important
When just splitting stress with respect to being not added with fiber, same decline is substantially.The most important innovative point of this product, is by polymer emulsion
Mate with mutual with the selection of polymer fiber species, the advantage giving full play to polymer emulsion and polymer fiber, reach
Superhigh tenacity required by this product, higher bending strength and do not ftracture it is important to will, and performance each other has very
Good coupling.This must be to the performance of polymer emulsion and the composite modified cement-based systems of polymer fiber and rule
In theory, the emulsion that can be used for modified cement all can be used for preparing this product, but different emulsion has different spies
Property it is therefore necessary to according to the feature of emulsion itself, adjust formula.As emulsion becomes film elongation at break rate relatively low, then must carry
Its volume high, such as butylbenzene 623 emulsion and pure the third 968 emulsions；If emulsion become film elongation at break rate is very high, but tensile strength is relatively
Low, then can somewhat reduce its volume, such as phenylpropyl alcohol 400 emulsion, generally speaking, tensile strength is high, the big emulsion of breaking strain,
The combination property of the modified mortar obtaining eventually is best, such as phenylpropyl alcohol 608 emulsion.The tensile property of the become thin film of emulsion is general and its glass
Glass temperature Tg is relevant, and the high emulsion of general Tg become thin film tensile strength can be higher, but breaking strain can be relatively low.Due to emulsion
Volume is high, and therefore emulsion solid content determines the lower limit changing the surname mortar ratio of mud, and the ratio of mud is lower, is more conducive to polymer thin
Mechanics performance in compound system for the film, therefore the too low emulsion of solid content is not suitable for the preparation of this product.
In theory, all of fiber all can be used for preparing this product.But different fibers have different mechanical properties, therefore
The size of fiber and the volume adjusting fiber according to the different fibers feature of itself, must be determined.PVA fiber selected by this product
A size of long 12mm, 15～25 μm of diameter, tensile strength is 1200～1500MPa, and elastic modelling quantity is about 40GPa.Change in principle
The fibre diameter of property can not be excessive, and excessive diameter can lead to fiber and the frictional force of matrix to diminish, and so that the stress of fiber is passed
Lead efficiency to reduce, can lead to matrix that crack occurs.This is just the opposite with ECC design principle, and ECC requires fibre diameter sufficiently large,
Make to be unlikely to during friction between fiber and cement matrix to rupture, and cause cement matrix to produce new crackle.When the fiber selected
Strength ratio PVA is high, then fiber size can accordingly adjust, and such as extends fibre length, or reduces fibre diameter, now fibers content
Can accordingly reduce.
Because this product adds substantial amounts of fiber, its processing characteristics can be had a strong impact on, therefore add appropriate water reducer
To improve the mobility of its slurry, but also result in the bleeding of slurry it is therefore necessary to add appropriate thickening agent to suppress it simultaneously
The addition of bleeding, thickening agent and polymer emulsion also improves the viscosity of slurry, leads to the void fraction of slurry to rise it is therefore necessary to add
Enter defoamer froth breaking.Thickening agent, water reducer, the concrete consumption of defoamer and selected emulsion and its volume, fiber and its
Volume is relevant, simultaneously also relevant with additive performance itself just can determine that it is necessary to carry out trial before manufacture.
Table 1 raw material and specification
| Material | Specification or the trade mark | Source |
| Cement | The general silicon portland cement of PO 42.5 | Carnis Rapanae thomasianae cement |
| Sand | Middle sand | Commercially available |
| Styrene-acrylic emulsion | PS608ap | BASF AG |
| Styrene-acrylic emulsion | S400ap | BASF AG |
| Styrene-butadiene emulsion | 623 | BASF AG |
| Pure-acrylic emulsion | 968OL | The Dow Chemical Company |
| Vinal | MP-Ib wins peaceful technical fiber | Shanghai Bo Ning technical fiber Materials Co., Ltd |
| Defoamer | NXZ emulsion defoamer | Commercially available |
| Water reducer | GTS-103 poly carboxylic acid series water reducer | Shanghai high ferro chemical building material company limited product |
| Cellulose ether | 8681 hydroxypropyl methyl cellulose ethers | Hercules chemical company product |
Table 2 material mixture ratio
Table 3 properties of product
Note:Embodiment, in bending strength, ftractures not yet.
Embodiment 5
The modified cement-based composite of superhigh tenacity fiber-reinforced polymer, by Portland cement, middle sand, polymer
Emulsion, synthetic polymeric fibers, water reducer, defoamer, thickening agent and water prepare for raw material, using following weight portion formula
Composition：Portland cement 100, polymer emulsion (in terms of solid content) 25, middle sand 50, water reducer 0.1, thickening agent 0.1, water
(including contained water in emulsion) 30.Wherein, synthetic polymeric fibers account for the 2.5% of total composite volume, and defoamer accounts for poly-
The 0.05% of compound quality of the emulsion, the styrene-acrylic emulsion that in the present embodiment, polymer emulsion is 47% for solid content, synthetic polymer
Fiber is vinal, and length is 10mm, 15 μm of diameter, and tensile strength is 1200MPa, and elastic modelling quantity is 30GPa, diminishing
Agent is polycarboxylate dehydragent, and defoamer is type of latex type defoamer, and thickening agent is cellulose ether.
The preparation method of the modified cement-based composite of superhigh tenacity fiber-reinforced polymer, using following steps：
(1) press proportioning raw materials and weigh each component, liquid component is included polymer emulsion, water reducer (solution or be first made into
Solution), thickening agent (if first wiring solution-forming may be answered, otherwise adding as solid constituent) and water pour in agitated kettle, stirring is equal
Even；
(2) solid constituent is included cement, water reducer (pressed powder), thickening agent (pressed powder) and sand mix and blend
Uniformly；
(3) (1) gained liquid mixture is added mixing and stirring in (2), mixing speed is not higher than 140r/min,
Low rate mixing 100-120s；
(4) synthetic polymeric fibers are added in step (3) products therefrom, mixing speed is not higher than 140r/min and stirs at a slow speed
Mix 100-120s, stirring terminates front Deca defoamer, obtains final product the modified cement-based composite of superhigh tenacity fiber-reinforced polymer.
Embodiment 6
The modified cement-based composite of superhigh tenacity fiber-reinforced polymer, by cement, middle sand, polymer emulsion, synthesis
Polymer fiber, water reducer, defoamer, thickening agent and water prepare for raw material, using following weight portion formula composition：Commonly
Portland cement 100, polymer emulsion (in terms of solid content) 35, middle sand 50, water reducer 0.5, thickening agent 0.5, water 40, synthesis is poly-
Compound fiber accounts for the 2.5% of total composite volume, and defoamer accounts for the 0.05～0.2% of polymer emulsion quality.Polymer breast
Liquid is cement mortar modification emulsion, the S400 styrene-acrylic emulsion that the present embodiment is 57% using solid content.Synthetic polymeric fibers
For vinal, length is 15mm, 25 μm of diameter, and tensile strength is 1500MPa, and elastic modelling quantity is 50GPa.Water reducer is
Polycarboxylate dehydragent.Defoamer is type of latex type defoamer.Thickening agent is cellulose ether.
The preparation method of the modified cement-based composite of superhigh tenacity fiber-reinforced polymer, using following steps：
(1) press proportioning raw materials and weigh each component, liquid component is included polymer emulsion, water reducer (solution or be first made into
Solution), thickening agent (if first wiring solution-forming may be answered, otherwise adding as solid constituent) and water pour in agitated kettle, stirring is equal
Even；
(2) solid constituent is included cement, water reducer (pressed powder), thickening agent (pressed powder) and sand mix and blend
Uniformly；
(3) (1) gained liquid mixture is added mixing and stirring in (2), mixing speed is not higher than 140r/min,
Low rate mixing 100-120s；
(4) synthetic polymeric fibers are added in step (3) products therefrom, mixing speed is not higher than 140r/min and stirs at a slow speed
Mix 100-120s, stirring terminates front Deca defoamer, obtains final product the modified cement-based composite of superhigh tenacity fiber-reinforced polymer.
Claims (9)
1. the modified cement-based composite of superhigh tenacity fiber-reinforced polymer is it is characterised in that by cement, middle sand, polymer
Emulsion, synthetic polymeric fibers, water reducer, defoamer, thickening agent and water prepare for raw material, using formula as below composition：
Ingredients weight parts：Cement 100, polymer emulsion (in terms of solid content) 25～35, middle sand 50, water reducer 0.1～0.5, increasing
Thick dose 0.1～0.5, water 30～40 (including contained water in emulsion),
Synthetic polymeric fibers account for the 2.5% of total composite volume, defoamer account for polymer emulsion quality 0.05～
0.2%.
2. the modified cement-based composite of superhigh tenacity fiber-reinforced polymer according to claim 1 it is characterised in that
Described cement is Portland cement.
3. the modified cement-based composite of superhigh tenacity fiber-reinforced polymer according to claim 1 it is characterised in that
Described polymer emulsion is cement mortar modification emulsion, including solid content be 47%～57% styrene-acrylic emulsion, butylbenzene breast
Liquid or pure-acrylic emulsion.
4. the modified cement-based composite of superhigh tenacity fiber-reinforced polymer according to claim 1 it is characterised in that
Described synthetic polymeric fibers are vinal.
5. the modified cement-based composite of superhigh tenacity fiber-reinforced polymer according to claim 4 it is characterised in that
The fibre length of described vinal is 10～15mm, 15～25 μm of diameter, and tensile strength is 1200～1500MPa,
Elastic modelling quantity is 30～50GPa.
6. the modified cement-based composite of superhigh tenacity fiber-reinforced polymer according to claim 1 it is characterised in that
Described water reducer is polycarboxylate dehydragent.
7. the modified cement-based composite of superhigh tenacity fiber-reinforced polymer according to claim 1 it is characterised in that
Described defoamer is type of latex type defoamer.
8. the modified cement-based composite of superhigh tenacity fiber-reinforced polymer according to claim 1 it is characterised in that
Described thickening agent is cellulose ether.
9. the system of the modified cement-based composite of superhigh tenacity fiber-reinforced polymer as any one of claim 1-8
Preparation Method is it is characterised in that the method adopts following steps：
(1) press proportioning raw materials and weigh each component, liquid component is included polymer emulsion, water reducer (solution or be first made into molten
Liquid), thickening agent (first wiring solution-forming, otherwise as solid constituent add) and water pour in agitated kettle, stir；
(2) solid constituent is included cement, water reducer (pressed powder), thickening agent (pressed powder) and sand mix and blend equal
Even；
(3) (1) gained liquid mixture is added mixing and stirring in (2), mixing speed is not higher than 140r/min, stirs at a slow speed
Mix 100-120s；
(4) synthetic polymeric fibers are added in step (3) products therefrom, mixing speed is not higher than 140r/min low rate mixing
100-120s, stirring terminates front Deca defoamer, obtains final product the modified cement-based composite of superhigh tenacity fiber-reinforced polymer.
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| CN108911648A (en) * | 2018-07-02 | 2018-11-30 | 江苏苏博特新材料股份有限公司 | A kind of sprayable early-strength superhigh tenacity mortar concrete system and preparation method thereof |
| CN109336505A (en) * | 2018-10-31 | 2019-02-15 | 广西驰胜农业科技有限公司 | One kind is freeze proof to split mortar and preparation method thereof |
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| CN108911648B (en) * | 2018-07-02 | 2022-02-11 | 江苏苏博特新材料股份有限公司 | Sprayable early-strength type ultrahigh-toughness mortar concrete system and preparation method thereof |
| CN109336505A (en) * | 2018-10-31 | 2019-02-15 | 广西驰胜农业科技有限公司 | One kind is freeze proof to split mortar and preparation method thereof |
| CN109942257A (en) * | 2019-04-24 | 2019-06-28 | 山东省交通规划设计院 | A kind of road superhigh tenacity cement-base composite material and its preparation method and application |
| CN110183192A (en) * | 2019-07-09 | 2019-08-30 | 吉林重通成飞新材料股份公司 | Cement mortar and preparation method thereof |
| CN110952996A (en) * | 2019-09-16 | 2020-04-03 | 北京工业大学 | Method and material for reinforcing electric power tunnel by fiber grid reinforced polymer mortar |
| CN110952996B (en) * | 2019-09-16 | 2021-12-31 | 北京工业大学 | Method and material for reinforcing electric power tunnel by fiber grid reinforced polymer mortar |
| CN111620608B (en) * | 2020-05-25 | 2021-10-19 | 中铁大桥局集团有限公司 | Design method of ultrahigh-toughness cement-based composite material |
| CN111620608A (en) * | 2020-05-25 | 2020-09-04 | 中铁大桥局集团有限公司 | Ultrahigh-toughness cement-based composite material and design method thereof |
| CN112456871A (en) * | 2020-12-01 | 2021-03-09 | 杭州联体消修化工有限公司 | High-toughness bendable self-healing anti-seismic cement-based composite material |
| CN113968702A (en) * | 2021-10-29 | 2022-01-25 | 同济大学 | Fiber and polymer composite modified cement-based repair mortar and preparation method thereof |
| CN114873962A (en) * | 2021-12-28 | 2022-08-09 | 重庆重通成飞新材料有限公司 | Formula of fiber reinforced silicate cement wallboard for recycling wind power blades |
| CN114808597A (en) * | 2022-04-15 | 2022-07-29 | 中国民航大学 | Cast-in-place type combined pavement slab for airport and preparation method |
| CN115140979A (en) * | 2022-07-18 | 2022-10-04 | 三能集成房屋股份有限公司 | Modified colorful UHPC mixture, decorative plate and preparation method thereof |
| CN115140979B (en) * | 2022-07-18 | 2024-03-19 | 三能集成房屋股份有限公司 | Modified color UHPC (ultra high Performance) mixture, decorative plate and preparation method thereof |
| CN116217128A (en) * | 2023-05-10 | 2023-06-06 | 中南大学 | Polymer pavement material and preparation method thereof |
| CN116217128B (en) * | 2023-05-10 | 2023-07-25 | 中南大学 | Polymer pavement material and preparation method thereof |
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