CN1208506C - Modified cracking and seepage resisting polyproplylene fiber for concrete and mortar - Google Patents
Modified cracking and seepage resisting polyproplylene fiber for concrete and mortar Download PDFInfo
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- CN1208506C CN1208506C CN 01114247 CN01114247A CN1208506C CN 1208506 C CN1208506 C CN 1208506C CN 01114247 CN01114247 CN 01114247 CN 01114247 A CN01114247 A CN 01114247A CN 1208506 C CN1208506 C CN 1208506C
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- 239000000835 fiber Substances 0.000 title claims abstract description 151
- 239000004567 concrete Substances 0.000 title claims abstract description 52
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 41
- 238000005336 cracking Methods 0.000 title claims description 43
- 239000004743 Polypropylene Substances 0.000 claims abstract description 52
- 229920001155 polypropylene Polymers 0.000 claims abstract description 49
- -1 polypropylene Polymers 0.000 claims abstract description 37
- 239000004698 Polyethylene Substances 0.000 claims description 11
- 229920000573 polyethylene Polymers 0.000 claims description 11
- 230000002708 enhancing effect Effects 0.000 claims description 10
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 9
- 229920001400 block copolymer Polymers 0.000 claims description 9
- 229920001038 ethylene copolymer Polymers 0.000 claims description 9
- 239000000654 additive Substances 0.000 claims description 8
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- 230000000996 additive effect Effects 0.000 claims description 5
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- 229920005989 resin Polymers 0.000 claims description 4
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- 230000000694 effects Effects 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 11
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- 238000010276 construction Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000009987 spinning Methods 0.000 abstract description 4
- 230000035515 penetration Effects 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 abstract 1
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- 238000002425 crystallisation Methods 0.000 abstract 1
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- 230000001458 anti-acid effect Effects 0.000 description 16
- 239000012752 auxiliary agent Substances 0.000 description 13
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- 238000012360 testing method Methods 0.000 description 9
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- 238000003756 stirring Methods 0.000 description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- 230000006835 compression Effects 0.000 description 6
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- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
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- 239000007769 metal material Substances 0.000 description 2
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- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
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- 238000001764 infiltration Methods 0.000 description 1
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- 229910052895 riebeckite Inorganic materials 0.000 description 1
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- 235000020679 tap water Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Curing Cements, Concrete, And Artificial Stone (AREA)
- Nonwoven Fabrics (AREA)
- Artificial Filaments (AREA)
Abstract
The present invention discloses a modified crack-resistant and penetration-resistant polypropylene fiber used for concrete and mortar. The cross section of the fiber is in a star shape; the branch included angle are split into circumferential uneven angles, and comprises three branch included angles of 110 degrees, 120 degrees and 130 degrees; the single fiber length is from 5 to 21mm; the fiber number of a single fiber is from 12 to 25 tax; the strength of the single fiber is from 280 to 370MPa; the initial modulus is from 2700 to 3750MPa; the ultimate tension is from 15 to 60%; the acid and alkali solubility is from 0.12 to 0.3%; the acid and alkali resistant strength is from 300 to 380MPa; the ultimate tension of acid and alkali resistance is from 15% to 60%; the fiber crystallization degree is from 50 to 75%. The polypropylene fiber is convenient to make, the star-shaped polypropylene fiber is easy for spinning molding in production, is favorable for increasing the engagement degree among the fiber, concrete and mortar and reducing the slump constant loss in construction processes. Furthermore, the fiber has good dispersancy and adhesive capability in concrete and mortar, and has excellent effects on crack resistance and penetration resistance.
Description
The present invention relates to a kind of modified polypropylene fiber and goods thereof, particularly a kind of Concrete and Mortar by Modified polypropylene anti-cracking and anti-leakage fiber and goods thereof.
As everyone knows, each class A of geometric unitA of concrete or mortar forms in the process of intensity in sclerosis, because the hydration of water and cement forms new cement crystal, cause the contraction of concrete or mortar component volume, may cause drying shrinkage with evaporation because the interior free moisture content of concrete or mortar sees through decompression again in the solidification process in early days simultaneously.Thereby this stress causes product inside to cause microscopic checks in certain period greater than the tensile strength of concrete or mortar member, causes these members that seepages such as moisture content take place in using in the later stage, has a strong impact on the service life of these members of knowing clearly.
In order to reduce and stop the generation of the non-structural cracks of concrete or mortar member, improve the impervious function of its cracking resistance, domestic and international many researchers have carried out long-term contrast test, have added inorganic material (as asbestos fibre, glass fibre etc.) or metal material (as steel fibre etc.) the most at the beginning in this class A of geometric unitA.Yet, find that in actual use the inorfil environmental pollution is serious, and is harmful; No matter inorganic material or metal material, acid-proof alkaline is relatively poor, manipulates also very inconveniently, and the construction cost increase is bigger, has been subjected to very big restriction so it is applied.
BP 1130612 has been tried out with splitting the scheme that film PP fiber substitutes at the deficiency of above-mentioned various fortifying fibres.Because the PP fiber has good Acidity of Aikalinity, can be bonding with cement aggregate, thereby shown the enhancing effect, but it is uniformly dispersed poor in cement aggregate that this kind splits film PP fiber, agglomerating phenomenon very easily takes place, make the fine cracks of concrete or mortar still produce in a large number, thereby had a strong impact on its use value in concrete or mortar.
United States Patent (USP) 61754 improves on the basis of BP 1130612, promptly earlier with fibrilled film fibre with the cement high speed and prolong mixing time and mix, so that it obtains dispersion effect preferably in cement, and then add various aggregates and stir use, expectation reaches and improves its dispersion effect in cement aggregate.Yet this mode does not get a desired effect, and fine cracks still end is eliminated at all, and has brought many inconvenience to normal construction, applies and will certainly bring a lot of insurmountable difficulties.
Chinese patent CN96116519 discloses a kind of polypropylene fibre used for preventing cement from cracking, and it is the refinforced cement goods preferably, and its fibre section is " Y " type, and fiber does not carry out modification.
Chinese patent CN00106131.3 discloses a kind of concrete and mortar modified polypropene staple, this fibre section is trilobal cross or circular arc type, since its cross section difference, the difference of geometry aspect, and its effect to concrete and mortar plasticity dry shrinkage and cracking exists notable difference.
Purpose of the present invention just provides a kind of defective that can effectively overcome prior art, improves the modified polypropene cracking resistance impervious fiber of concrete and mortar performance.
Another object of the present invention is exactly that a kind of mixed soil and mortar that is mixed with modified polypropene cracking resistance impervious fiber and other additive will be provided.The non-structural cracks of having mixed all kinds of concrete behind this kind fibrous material and mortar member obviously reduces and eliminates, and reaches the purpose that improves component quality, prolongs its service life.
The object of the present invention is achieved like this:
A kind of Concrete and Mortar by Modified polypropylene anti-cracking and anti-leakage fiber, make by the modified polypropylene resin melt spinning, in this modified polypropylene resin total amount, when melt spinning, add and contain the random enhancing touthness of polyphenylethylene by adding additive of 0.5%-0.8%, polypropylene-polyethylene block copolymer additives of 1%-1.5% and ethene/polyethylene and ethylene copolymers additive of 8%-12%.
In Concrete and Mortar by Modified polypropylene anti-cracking and anti-leakage fiber of the present invention, the cross section of its fiber is " star " type, the branch angle is divided into not five equilibrium angle of circumference, form by 110 °, 120 °, 130 ° three branch angle, single fiber length is 5-21mm, single fiber fiber number 12-25dtex, single fiber intensity 280-370MPa, initial modulus 2700-3750MPa, ultimate elongation 15-60%, soda acid solubility 0.12-0.3%, antiacid base strength 300-380MPa, antiacid alkali ultimate elongation 15-60%, fibre crystallinity 50-75%.
The concrete and the mortar of modified polypropene cracking resistance impervious fiber of the present invention in concrete and mortar volume, contain 0.8-1.2Kg/m
3Modified polypropene cracking resistance impervious fiber.In volume of concrete, contain 0.9-1.2Kg/m
3Modified polypropene cracking resistance impervious fiber.In mortar volume, contain 0.8-1.0Kg/m
3Modified polypropene cracking resistance impervious fiber.
It is simple that the present invention has the product manufacturing, the FE1-42 that produces in existing German barmag company unites and adopts " star " type spinnerets on the short frame group, molten the touching of this production line promptly forms " star " tee section in the spinning process, spinning technique is easy on producing, and the fiber with this shape helps strengthening the dispersed with stirring in concrete and mortar.Because various additives are all added in the melt spinning process, and carrying out good fiber surface in process of production handles, so the unrest of fiber in concrete and mortar all is well solved to distribution and dispersiveness, the engagement effect of fiber and aggregate also obviously improves and improves.
The present invention gives full play to the effect of polypropylene fibre as concrete and mortar fortifying fibre, replace traditional fibrilled film fibre with the impervious staple fibre of cracking resistance, improve the dispersing uniformity of fiber in concrete and mortar, the flat form that replaces fibrilled film fibre with the heteromorphosis fiber in isogonism " star " type cross section not, with the contact area between increased fiber and concrete and mortar, thus raising engagement degree between the two.
Slump index is a fiber with concrete and mortar whipping process in an important indicator, the present invention is owing to adopt the not heteromorphosis fiber in isogonism " star " type cross section, and fiber handled with surfactant reduce slump-loss.
The dispersion effect of Concrete and Mortar by Modified polypropylene anti-cracking and anti-leakage fiber in cement aggregate and random in distributed degrees decided by fiber surface processing of the present invention and surface-activity auxiliary agent.
Product of the present invention has replaced " round ", " trilobal cross " or " Y " type cross section with star-like cross section, play an important role at the slump-loss that solves workability and reduce as far as possible in the work progress, each acute angle of product of the present invention all becomes the shape of wedge angle, this give this product with concrete and mortar whipping process in be subjected to external force rapidly and dispersion and fiber concrete and mortar are being carried, reduce slump-loss in the pouring process that good guarantee effect is arranged.
Product of the present invention is when stirring with concrete and mortar, and only mode of operation is once finished routinely, needn't take any special measure.
Fig. 1, Fig. 2 are the structural representation enlarged drawing of modified polypropene cracking resistance impervious fiber of the present invention.
Modified polypropene cracking resistance impervious fiber (red strong silk) can prepare by the following method:
With 1000 kilograms of polypropylene chips; add 0.6% random enhancing touthness of polyphenylethylene by adding; or 1.5% polypropylene---polyethylene block copolymer and 8% ethene/polyethylene and ethylene copolymers; mixed; granulation or directly and staple fibre melt spinning extruder carry out spinning; the spinnerets hole shape is " star " type; spinnerets hole count 6000 holes or 8000 holes stretch (3.5 times of draw ratios), cut off (staple fibre 15mm); record fibre number 16dtex; tensile strength 277MPa, limit of stretch 57%, initial modulus 2159MPa; soda acid solubility 0.2%; antiacid base strength 305MPa, antiacid alkali stretches 50%, fibre crystallinity 62%.
Embodiment one:
1, raw material
Cement: 525# ordinary cement (originating in Nanjing " Chinese cement factory ");
Sand: river sand, modulus of fineness are 2.8;
Stone: cobble, maximum particle diameter 20mm;
The FDN high efficiency water reducing agent.
Concrete mix (weight ratio) is: 1: 2.25: 3.37; The ratio of mud 0.54;
High efficiency water reducing agent volume 0.6%.
2, fibrous material: modified polypropene cracking resistance impervious fiber (red strong silk): " star " type, 110 ° of branch angles, 120 °, 130 °, fibre length is 5mm, single fiber fiber number 12dtex, single fiber intensity 280MPa, fiber modulus 2700MPa, tensile fiber length 15%, degree of crystallinity 50%, Carboxymethylcellulose alkali solubility 0.12%, the antiacid base strength 300MPa of fiber, the antiacid alkali ultimate elongation of fiber degree 15% contains 5 kilograms of random enhancing touthness of polyphenylethylene by adding auxiliary agents in 1000 kilograms of modified polypropene cracking resistance impervious fibers, 10 kilograms of polypropylene---polyethylene block copolymer auxiliary agent, 80 kilograms of ethene/polyethylene and ethylene copolymers.
3, mixing water: running water.
4, test
Modified polypropene cracking resistance impervious fiber (red strong silk) concrete blending volume fraction is 0.1% modified polypropene cracking resistance impervious fiber.Mechanical agitation 3min.
Test: fiber concrete and the contrast of plain concrete mechanical property.
Detect foundation: GBJ81-85, GBJ82-85, GB/T15231.5-94, Q/321181BH0010-2000.
Testing result such as following table:
| Performance | The contrast groups concrete | Fiber concrete |
| Compression strength | 48.3MPa | 48.32MPa |
| Splitting compression strength | 4.0MPa | 4.0MPa |
| Rupture strength | 5.788MPa | 5.82MPa |
| Impact strength | 1.72KJ/m 2 | 2.08KJ/m 2 |
| The infiltration degree of depth | 120mm | 80mm |
| Crack resistance | 42.4 | 21.4 |
| Dispersive property | Evenly, not agglomerating | Evenly, not agglomerating |
| Remarks: (1) osmotic pressure is 1.2MPa.(2) crack resistance is represented with crackle weighting length. | ||
Embodiment two
One, raw material
1, cement: 425# Portland cement (originating in cement plant, Danyang City, Jiangsu Province)
2, sand; River sand, grating is good, medium sand
3, mixing water: ordinary tap water
4, fiber: modified polypropene cracking resistance impervious fiber (red strong silk): " star " type, 110 ° of branch angles, 120 °, 130 °, fibre length is 5mm, single fiber fiber number 12dtex, single fiber intensity 280MPa, fiber modulus 2700MPa, tensile fiber length 15%, degree of crystallinity 50%, Carboxymethylcellulose alkali solubility 0.12%, the antiacid base strength 300MPa of fiber, the antiacid alkali ultimate elongation of fiber degree 15% contains 5 kilograms of random enhancing touthness of polyphenylethylene by adding auxiliary agents in 1000 kilograms of modified polypropene cracking resistance impervious fibers, 10 kilograms of polypropylene---polyethylene block copolymer auxiliary agent, 80 kilograms of ethene/polyethylene and ethylene copolymers.
Two, mortar mix ratio and performance test foundation
1, mortar mix ratio: mortar mix ratio 1, this match ratio are done mortar drought period cracking resistance relatively
| Material | Cement | Sand | Water | Red strong silk |
| Benchmark | 1 | 1 | 0.5 | / |
| Volume 1 | 1 | 1 | 0.5 | 0.4Kg/m 3 |
| Volume 2 | 1 | 1 | 0.5 | 0.7Kg/m 3 |
| Volume 3 | 1 | 1 | 0.5 | 0.9Kg/m 3 |
2, test foundation
, resistance to compression impervious to mortar by the JQJ70-90 method, performance such as freeze proof are tested;
By the Q/321181BH0010-2000 method mortar cracking resistance is tested.
Three, the test effect sees the following form:
Attached weighted value table
| Fracture width mm | 1＜d＜2 | 0.5＜d＜1 | 0.3＜d＜0.5 | 0.1＜d＜0.3 | d＜0.1 |
| Weights | 1.5 | 0.8 | 0.4 | 0.2 | 0.05 |
From test result, fibers content is at 0.4Kg/m
3The time existing tangible effect of prestressed, the crack weighted value obviously reduces,
The result also shows, increases with fibers content, and crack Breadth Maximum, bar number average reduce, and effect of prestressed is more obvious, when fibers content is 0.9Kg/m
3The time, almost there is not visible crack.
Embodiment 3:
Except that the modified polypropene cracking resistance impervious fiber that adopts following proportioning, all the other are with embodiment 1.
Modified polypropene cracking resistance impervious fiber: " star " type, 110 °, 120 °, 130 ° of branch angles, fibre length is 15mm, single fiber fiber number 18dtex, single fiber intensity 300MPa, fiber modulus 3000MPa, tensile fiber length 40%, soda acid solubility 0.2%, antiacid base strength 350MPa, antiacid alkali ultimate elongation degree 45%, fibre crystallinity 60% contains 6.5 kilograms of random enhancing touthness of polyphenylethylene by adding auxiliary agents, 13 kilograms of polypropylene---polyethylene block copolymer auxiliary agent, 100 kilograms of ethene/polyethylene and ethylene copolymers in 1000 kilograms of modified polypropene cracking resistance impervious fibers.
Embodiment 4:
Except that the modified polypropene cracking resistance impervious fiber that adopts following proportioning, all the other are with embodiment 1.
Modified polypropene cracking resistance impervious fiber: " star " type, 110 °, 120 °, 130 ° of branch angles, fibre length is 21mm, single fiber fiber number 25dtex, single fiber intensity 370MPa, fiber modulus 3750MPa, tensile fiber length 60%, soda acid solubility 0.3%, antiacid base strength 380MPa, antiacid alkali ultimate elongation degree 60%, fibre crystallinity 75% contains 8 kilograms of random enhancing touthness of polyphenylethylene by adding auxiliary agents, 15 kilograms of polypropylene---polyethylene block copolymer auxiliary agent, 120 kg ethene/polyethylene and ethylene copolymers in 1000 kilograms of modified polypropene cracking resistance impervious fibers.
Embodiment 5:
With embodiment 3, except that the modified polypropene cracking resistance impervious fiber that adopts following proportioning, all the other are with embodiment 2.
Modified polypropene cracking resistance impervious fiber: " star " type, 110 °, 120 °, 130 ° of branch angles, fibre length is 15mm, single fiber fiber number 18dtex, single fiber intensity 300MPa, fiber modulus 3000MPa, tensile fiber length 40%, soda acid solubility 0.2%, antiacid base strength 350MPa, antiacid alkali ultimate elongation degree 45%, fibre crystallinity 60% contains 6.5 kilograms of random enhancing touthness of polyphenylethylene by adding auxiliary agents, 13 kilograms of polypropylene---polyethylene block copolymer auxiliary agent, 100 kilograms of ethene/polyethylene and ethylene copolymers in 1000 kilograms of modified polypropene cracking resistance impervious fibers.
Embodiment 6:
With embodiment 4, except that the modified polypropene cracking resistance impervious fiber that adopts following proportioning, all the other are with embodiment 2.
Modified polypropene cracking resistance impervious fiber: " star " type, 110 °, 120 °, 130 ° of branch angles, fibre length is 21mm, single fiber fiber number 25dtex, single fiber intensity 370MPa, fiber modulus 3750MPa, tensile fiber length 60%, soda acid solubility 0.3%, antiacid base strength 380MPa, antiacid alkali ultimate elongation degree 60%, fibre crystallinity 75% contains 8 kilograms of random enhancing touthness of polyphenylethylene by adding auxiliary agents, 15 kilograms of polypropylene---polyethylene block copolymer auxiliary agent, 120 kg ethene/polyethylene and ethylene copolymers in 1000 kilograms of modified polypropene cracking resistance impervious fibers.
Embodiment 7:
For product of the present invention is led the example that wall has carried out the fiber concrete field trial on a Three Gorges Dam left side:
China Ge Zhou Ba test center Three Gorges laboratory of group mixes and stirs system 1 February 2 calendar year 2001 90 under the tissue of Three Gorges headquarter
#The building produces, and leads wall on a Three Gorges Dam left side and has carried out the fiber concrete field trial, and fiber adopts the different profiled-cross-section modified polypropene cracking resistance impervious fibers (red strong silk) that divide equal angles of product of the present invention, and its result is as follows:
One, field trial construction match ratio
According to the laboratory test achievement, field trial construction match ratio such as following table 1.
Table 1: fiber concrete field trial match ratio
| The design label | Cement type | Grating | The match ratio parameter | Every square bar material consumption (Kg) | ||||||||||
| Water-cement ratio | W (Kg) | Sand coarse aggregate ratio (%) | Water | Cement | The coal dust ash | Artificial sand | Rubble (mm) | X404 | Dh9 | Fiber | ||||
| 5-20 | 2-40 | |||||||||||||
| R28400# | Middle heat 525 | Two | 0.3 | 107 | 35 | 107 | 286 | 71 | 683 | 588 | 719 | 4.28 | 2.86 | 1.0 |
Two, the machine mouth detects achievement
1, fiber concrete
The fiber concrete feeding sequence is existing to be undertaken by the original program of batching plant, and fiber is added by the sand hopper, mixes and stirs situation from the scene, and this feeding sequence is feasible.Mixing time by and original 120 seconds of building, it is slightly poor that concrete mixes and stirs the material cohesiveness, after will be adjusted into 150 seconds the mixing time, it is better that concrete mixes and stirs the material cohesiveness, for this reason, the concrete mixing time of determining to add behind the fiber is 150 seconds.See Table 2 in machine mouth sampling Detection achievement.
Table 2: on-the-spot sampling Detection achievement on the fiber coagulation
| The concrete label | The slump (mm) | Air content (%) | Compression strength (MPa) | Split tensile strength (MPa) | Elastic modelling quantity * 10 4 (MPa) | ||||||
| 3d | 10d | 28d | 7d | 10d | 14d | 4d | 7d | 14d | |||
| R28400# | 18 | 4.6 | / | 39.2 | / | 2.46 | 2.67 | 2.75 | 2.25 | 2.90 | 2.91 |
Embodiment 8:
The example that in the grandstand engineering of stadium, Nantong, uses for product of the present invention.
About stadium, Nantong grandstand engineering product of the present invention--the practicality report of-Concrete and Mortar by Modified polypropylene anti-cracking and anti-leakage fiber (red strong silk):
One, fiber numbering and volume:
Number 1. benchmark (cement: sand: water=1: 1.5: 0.5)
Number 2. benchmark+domestic * * and produce modified polypropylene fiber volume 0.9Kg/m
3
Number 3. benchmark+domestic Danyang and produce modified polypropene cracking resistance impervious fiber volume 0.9Kg/m
3
Number 4. benchmark+external * * and produce modified polypropylene fiber volume 1.0Kg/m
3
Annotate: require this to report the two tame titles in addition of unreceipted participation type selecting experiment according to relevant producer.
Two, cracking resistance result of the test:
Annotate: above-mentioned data are to get according to the accelerated test procedures that Kraai proposes
Three, concrete compressive property result of the test:
| Numbering | 7d compression strength (MPa) | 28d compression strength (MPa) |
| 1 | 20.6 | 32.0 |
| 2 | 20.2 | 30.9 |
| 3 | 17.9 | 29.8 |
| 4 | 20.2 | 28.4 |
Use the result via stadium, Nantong grandstand engineering site: the concrete that adds fiber of the present invention does not have the drought period crackle, and arrive 28d after the length of time perusal do not find crackle.Observe the concrete ne-leakage that adds this fiber through rainy weather, local moist phenomenon is arranged at the plate bottom of not adding fiber of the present invention.
Claims (1)
1, a kind of Concrete and Mortar by Modified polypropylene anti-cracking and anti-leakage fiber, make by the modified polypropylene resin melt spinning, it is characterized in that:, when melt spinning, add and contain the random enhancing touthness of polyphenylethylene by adding additive of 0.5%-0.8%, polypropylene-polyethylene block copolymer additives of 1%-1.5% and ethene/polyethylene and ethylene copolymers additive of 8%-12% in this modified polypropylene resin total amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01114247 CN1208506C (en) | 2001-06-05 | 2001-06-05 | Modified cracking and seepage resisting polyproplylene fiber for concrete and mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01114247 CN1208506C (en) | 2001-06-05 | 2001-06-05 | Modified cracking and seepage resisting polyproplylene fiber for concrete and mortar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1322865A CN1322865A (en) | 2001-11-21 |
| CN1208506C true CN1208506C (en) | 2005-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01114247 Expired - Fee Related CN1208506C (en) | 2001-06-05 | 2001-06-05 | Modified cracking and seepage resisting polyproplylene fiber for concrete and mortar |
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|---|---|
| CN (1) | CN1208506C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348528C (en) * | 2003-09-19 | 2007-11-14 | 同济大学 | Anticrack waterproof agent for cement-base material |
| ES2351649B1 (en) * | 2010-11-17 | 2011-10-28 | Adril Traders, S.L. | FIBER POLYPROPYLENE MONOFILAMENT FOR REINFORCEMENT OF CONCRETE AND / OR CEMENT. |
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2001
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| CN1322865A (en) | 2001-11-21 |
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