CN104478356A - Fiber porous plate - Google Patents
Fiber porous plate Download PDFInfo
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- CN104478356A CN104478356A CN201410753828.4A CN201410753828A CN104478356A CN 104478356 A CN104478356 A CN 104478356A CN 201410753828 A CN201410753828 A CN 201410753828A CN 104478356 A CN104478356 A CN 104478356A
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- fiber
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Abstract
The invention discloses a fiber porous plate. The fiber porous plate is characterized by being prepared from the following raw materials in percentage by weight: 46%-50% of common silicate cement, 0.9% of a poly hydroxy acid speed reducer, 21%-24% of fine sands, 2% of a coagulation accelerator, 0.25% of a protein foaming agent, 0.45% of polyvinyl alcohol fibers and 24%-28% of water. A preparation method for the fiber porous plate comprises the following steps: (1) preparing materials; (2) stirring; (3) preparing foams; (4) stirring for a second time; (5) casting, namely directly putting the prepared porous plate into a pump truck from a discharge hole, arranging a stirrer in the pump truck, and stirring the slurry in a pump truck casting process; and (6) maintaining. The fiber porous plate is stable in quality performance.
Description
Technical field
The present invention relates to building material field, particularly a kind of fiber multihole plate.
Background technology
Porous plate has the features such as lightweight, good heat insulating, anti-seismic performance excellent, minimizing noise is good, but porous plate also also exist intensity low, shrink the shortcomings such as large, easy to crack, if porous plate overcomes these shortcomings, just can be promoted widely in building energy saving field.Fiber can make the tensile strength of porous plate and crack resistance increase, Analysis on Mechanism is as follows: because the diameter of fiber is minimum, only reach tens microns, and there is wetting ability, favorable dispersity in concrete, fiber is distributed in inside concrete with uniform amount larger in unit volume, define a kind of disorderly to support system, therefore the dry shrinkage of porous plate must be subject to the stop of fiber in the process of development, be difficult to further develop, thus improve the limit ability of porous plate, reach the effect suppressing to shrink.Therefore, utilize fiber to strengthen the mechanical property of porous plate and to prevent from ftractureing be feasible.
Summary of the invention
For the deficiencies in the prior art, object of the present invention provides a kind of preparation method of fiber multihole plate.
The object of the present invention is achieved like this, and fiber multihole board raw material weight proportion is as follows: ordinary Portland cement 46% ~ 50%, poly-hydroxy acid water reducer 0.9%, fine sand 21% ~ 24%, setting accelerator 2%, protein foaming agent 0.25%, polyvinyl alcohol fiber incorporation is 0.45%, water 24% ~ 28%.
Fine sand is segmented by sieve, and sand maximum particle diameter is 2.5mm, and water cement ratio is 0.55.
Making comprises the following steps:
(1) prepare burden
(2) stir
First by cement and sand dry mixing 1 minute, then add water (deduction foam prepares use water) stirs 2 minutes, and stir speed (S.S.) is 40 ~ 60r/min, adds fiber and stirs 4 minutes, and stir speed (S.S.) is 30 ~ 40r/min.
(3) foam is prepared
By whipping agent and water mixing, then adopt cement mortar mixer system bubble, stir speed (S.S.) is 60 ~ 120r/min, stirs 10 minutes.
(4) secondary stirring
Mortar prepares foam while stirring, and is added in mortar by the foam prepared and stirs 2 minutes together.
(5) pour into a mould
The porous plate made directly puts into pump truck from drain hole, and in pump truck, installing agitator, stirs slurry in pump truck casting process.
(6) maintenance
Covered with plastic film is answered, in case moisture evaporates and froth breaking after cast.Goods adopt steam hydrothermal curing, just support temperature 40 DEG C ~ 90 DEG C, curing time 18 ~ 24h.
Production technique of the present invention is simply complete, and be applicable to large, medium and small scale and full-automatic production, quality product stable performance, effect of anti-cracking is good.
Embodiment
Raw material weight proportioning is as follows: ordinary Portland cement 48%, and poly-hydroxy acid water reducer 0.9%, fine sand 22%, setting accelerator 2%, protein foaming agent 0.25%, polyvinyl alcohol fiber incorporation is 0.45%, water 26.4%.
Table 1 is fiber multihole plate performance in Different Water-Cement Ratio situation.Table 1 shows: along with the increase of water cement ratio, and fiber multihole plate thermal conductivity sharply reduces, and water cement ratio increases to 0.75 from 0.55, then make thermal conductivity be reduced to 0.2286 from 0.3568, reduces by 35.9%.When water cement ratio is less, slurry denseness is comparatively large, and foam and slurry break than being easier to, so water cement ratio is little compared with porosity time low in the process of mixing.After water cement ratio increases, slurry denseness diminishes, and is easy to merge in the process that foam disperses in slurry, breaks less, thus aperture and porosity are increased, but slurry denseness too small being unfavorable for stirs.According to test-results, determine that water cement ratio is 0.55.
Fiber multihole plate performance in table 1 Different Water-Cement Ratio situation
Table 2 is fiber multihole plate performance in the situation of different sand grains footpaths.First three thermal conductivity of planting sand is respectively 0.2551,0.242,0.2549, be more or less the same, and when sand maximum particle diameter is 2.5mm, the thermal conductivity of fiber multihole plate is 0.3069, plants increase about 26% than first three.Along with the increase of sand maximum particle diameter, the thermal conductivity of fiber multihole plate declines on the contrary.According to test-results, determine that sand maximum particle diameter is 2.5mm.Fine sand is segmented by sieve, and sand maximum particle diameter is 2.5mm.
Fiber multihole plate performance in the situation of table 2 different sand grains footpath
Water-intake rate is the important indicator of fiber multihole plate.Data as can be seen from table 1,2, for Different Water-Cement Ratio series, when adopting quality water-intake rate, the water-intake rate of fiber multihole plate increases with water cement ratio and increases, water cement ratio be 0.55 water-intake rate be 21.3%, 0.75 then increase to 32.6%, increase 53.1%.When adopt volume water absorption rate time, water-intake rate also with water cement ratio increase and increase, water cement ratio be 0.55 water-intake rate be 270.1kg/m
3, 0.75 increase to 295kg/m
3, increase 9%, this is mainly because after water cement ratio increases, although fiber multihole plate density reduces, slurry volume reduces, and the pore volume in fiber multihole plate increases a lot, thus causes water-intake rate to increase.For different fineness sand series, when adopting quality water-intake rate, first three water-intake rate of planting is roughly equal, and be respectively 28.6%, 28.2% and 29%, the water-intake rate of the 4th kind is 27.5%, slightly reduces.And when adopting volume water absorption rate, because first three density difference of planting is very little, water cement ratio is identical, so water-intake rate is also more or less the same, is 282.6kg/m respectively
3, 276.9kg/m
3and 290.8kg/m
3.Compare first three to plant, the density of the 4th kind has larger increase, thus water-intake rate is increased, and the water-intake rate of the 4th kind is 318.7kg/m
3.
Table 3 is fiber multihole plate performance in different fiber situation.Along with the increase of fibers content, fiber multihole plate ultimate compression strength improves, and folding strength increase rate is comparatively large, and thermal conductivity change is little.Along with fibers content is increased to a certain degree, fiber multihole plate ultimate compression strength and folding strength have a declining tendency on the contrary.
According to pore structure analysis result, fiber makes fiber multihole plate mean pore size reduce, and hole shape looks have to a certain degree to be improved, simultaneously because fiber is to the enhancement of base material, so compared with mixing porous plate with nothing, fiber multihole plate ultimate compression strength is improved.
A small amount of polyvinyl alcohol fiber, alkali resistant glass fiber, polypropylene fibre is mixed in fiber multihole plate, the dry shrinkage of fiber multihole plate all can be made to obtain restriction to a certain extent, along with the increase of fibre weight, the drying shrinkage value of fiber multihole plate reduces gradually, but effect is not obvious especially, and early stage drying shrinkage reduces more.The effect of polyvinyl alcohol fiber is better than alkali resistant glass fiber and polypropylene fibre.Fiber improves material limit, thus the mechanism improving material deformation performance can from the following aspects analysis: 1. from fiber dispersion angle analysis: because the diameter of fiber is minimum, only reach tens microns, and there is wetting ability, favorable dispersity in the base, so in fiber multihole plate, fiber is distributed in inside concrete with uniform amount larger in unit volume, define a kind of disorderly to support system, therefore concrete dry shrinkage must be subject to the stop of fiber in the process of development, consume energy, be difficult to further develop, thus improve concrete limit ability, reach the effect suppressing to shrink.The dry shrinkage of fiber to cement matrix has good restriction.2. from fibre property angle analysis: during base shrinks, fiber is squeezed, and the Young's modulus of fiber is larger, and the racking stress that fiber can be shared is also larger, the ability of the restrained deformation of fiber is also stronger, has the effect of better restriction base shrinks than polypropylene fibre.Therefore the polyvinyl alcohol fiber of high-elastic mould can the shrinkage strain of limiting material better.
Accordingly, adopt polyvinyl alcohol fiber, volume is 0.45%.
Fiber multihole plate performance in the different fiber situation of table 3
Making comprises the following steps:
(1) prepare burden
(2) stir
First by cement and sand dry mixing 1 minute, then add water (deduction foam prepares use water) stirs 2 minutes, and stir speed (S.S.) is 40 ~ 60r/min, adds fiber and stirs 4 minutes, and stir speed (S.S.) is 30 ~ 40r/min.
Mix cement mortar time slurry relatively rare, stirring velocity adopt middling speed; Add fiber disposed slurry thick dense, resistance increases, and stirring velocity adopts low speed, improves the thrust of agitating vane.
(3) foam is prepared
By whipping agent and water mixing, then adopt cement mortar mixer system bubble, stir speed (S.S.) is 60 ~ 120r/min, stirs 10 minutes.
Stirrer runs up to improve the dispersive ability of agitating vane to slurry, particularly improves the mixed bubble later stage to smash ability to the lumps interspersed among in slurry or slurry grain, prevents retaining of too much tiny granule.
(4) secondary stirring
Mortar prepares foam while stirring, and is added in mortar by the foam prepared and stirs 2 minutes together.
(5) pour into a mould
The porous plate made directly puts into pump truck from drain hole, and in pump truck, installing agitator, stirs slurry, prevent because foam rise and heavy material sink and cause concrete delamination in pump truck casting process.Porous plate is poured into die trial.
During cast, surging force can not be excessive, and surging force is larger, and lather collapse must be faster, easily causes slurry unstable after entering mould.Cast highly exceedes mould about 15mm suitable for reading, strikes off after treating initial set.Cast disposed slurry will sink, and slurry cast height will consider this factor.During cast, pump truck is a little close to wanting from mould, because pumping is far away, foam lost rate is larger.
(6) maintenance
Covered with plastic film is answered, in case moisture evaporates and froth breaking after cast.Goods adopt steam hydrothermal curing, just support temperature 70 C, curing time 24h.
Claims (6)
1. a fiber multihole plate, is characterized in that raw material weight proportioning is as follows: ordinary Portland cement 46% ~ 50%, poly-hydroxy acid water reducer 0.9%, fine sand 21% ~ 24%, setting accelerator 2%, protein foaming agent 0.25%, polyvinyl alcohol fiber incorporation is 0.45%, water 24% ~ 28%.
2., according to fiber multihole plate according to claim 1, its feature makes and comprises the following steps:
(1) prepare burden
(2) stir
First by cement and sand dry mixing 1 minute, then add water (deduction foam prepares use water) stirs 2 minutes, and stir speed (S.S.) is 40 ~ 60r/min, and add fiber and stir, stir speed (S.S.) is 30 ~ 40r/min;
(3) foam is prepared
By whipping agent and water mixing, then adopt cement mortar mixer system bubble, stir speed (S.S.) is 60 ~ 120r/min;
(4) secondary stirring
Mortar prepares foam while stirring, and is added in mortar by the foam prepared and stirs together;
(5) pour into a mould
The porous plate made directly puts into pump truck from drain hole, and in pump truck, installing agitator, stirs slurry in pump truck casting process;
(6) maintenance
Covered with plastic film is answered, in case moisture evaporates and froth breaking after cast; Goods adopt steam hydrothermal curing, just support temperature 40 DEG C ~ 90 DEG C, curing time 18 ~ 24h.
3., according to fiber multihole plate according to claim 1, it is characterized in that fine sand maximum particle diameter is 2.5mm.
4., according to fiber multihole plate according to claim 1, it is characterized in that in whipping step, churning time is 4 minutes.
5., according to fiber multihole plate according to claim 1, it is characterized in that preparing churning time in foam step is 10 minutes.
6., according to secondary stirring according to claim 1, it is characterized in that in secondary stirring step, churning time is 2 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410753828.4A CN104478356A (en) | 2014-11-27 | 2014-11-27 | Fiber porous plate |
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| CN201410753828.4A CN104478356A (en) | 2014-11-27 | 2014-11-27 | Fiber porous plate |
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| CN104478356A true CN104478356A (en) | 2015-04-01 |
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| CN201410753828.4A Pending CN104478356A (en) | 2014-11-27 | 2014-11-27 | Fiber porous plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468104A (en) * | 2016-09-07 | 2017-03-01 | 西安建筑科技大学 | A kind of steel fiber reinforced concrete and its construction method reinforcing precast floor slab |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353265A (en) * | 2008-09-11 | 2009-01-28 | 周照柱 | Cellular concrete product |
| US20120040165A1 (en) * | 2007-07-05 | 2012-02-16 | United States Gypsum Company | Lightweight Cementitious Compositions and Building Products and Methods for Making Same |
| CN102390968A (en) * | 2011-08-16 | 2012-03-28 | 岳建伟 | Heat insulation fireproofing honeycomb cement board and preparation method thereof |
| CN103626458A (en) * | 2012-08-22 | 2014-03-12 | 北京建筑材料科学研究总院有限公司 | Preparation method for lightweight gypsum-based fireproof door core board |
| CN103755281A (en) * | 2014-01-09 | 2014-04-30 | 江苏安盛科技有限公司 | Cement-based composite foam insulation board and preparation method thereof |
-
2014
- 2014-11-27 CN CN201410753828.4A patent/CN104478356A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120040165A1 (en) * | 2007-07-05 | 2012-02-16 | United States Gypsum Company | Lightweight Cementitious Compositions and Building Products and Methods for Making Same |
| CN101353265A (en) * | 2008-09-11 | 2009-01-28 | 周照柱 | Cellular concrete product |
| CN102390968A (en) * | 2011-08-16 | 2012-03-28 | 岳建伟 | Heat insulation fireproofing honeycomb cement board and preparation method thereof |
| CN103626458A (en) * | 2012-08-22 | 2014-03-12 | 北京建筑材料科学研究总院有限公司 | Preparation method for lightweight gypsum-based fireproof door core board |
| CN103755281A (en) * | 2014-01-09 | 2014-04-30 | 江苏安盛科技有限公司 | Cement-based composite foam insulation board and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468104A (en) * | 2016-09-07 | 2017-03-01 | 西安建筑科技大学 | A kind of steel fiber reinforced concrete and its construction method reinforcing precast floor slab |
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Application publication date: 20150401 |