CN113149552A - Polypropylene fiber concrete and production process thereof - Google Patents
Polypropylene fiber concrete and production process thereof Download PDFInfo
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- CN113149552A CN113149552A CN202110403974.4A CN202110403974A CN113149552A CN 113149552 A CN113149552 A CN 113149552A CN 202110403974 A CN202110403974 A CN 202110403974A CN 113149552 A CN113149552 A CN 113149552A
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- 239000004567 concrete Substances 0.000 title claims abstract description 68
- -1 Polypropylene Polymers 0.000 title claims abstract description 43
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 43
- 239000000835 fiber Substances 0.000 title claims abstract description 43
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000004568 cement Substances 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 35
- 239000002994 raw material Substances 0.000 claims abstract description 33
- 239000011230 binding agent Substances 0.000 claims abstract description 18
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 18
- 239000010881 fly ash Substances 0.000 claims abstract description 18
- 239000002893 slag Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000000227 grinding Methods 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 21
- 239000011398 Portland cement Substances 0.000 claims description 14
- 239000004570 mortar (masonry) Substances 0.000 claims description 14
- 238000011282 treatment Methods 0.000 claims description 12
- 238000001723 curing Methods 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 238000005187 foaming Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 238000004873 anchoring Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 abstract 1
- 239000002585 base Substances 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 238000011418 maintenance treatment Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00293—Materials impermeable to liquids
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
Abstract
The invention discloses polypropylene fiber concrete, which comprises polypropylene fibers, cement base materials, a water reducing agent, fly ash, a synergist, talcum powder, a binder, an expanding agent, a silane coupling agent, slag micro powder and water; the manufacturing process of the concrete comprises the steps of proportioning materials, premixing the raw materials, finely grinding, mixing with water, aerating, standing and inspecting a concrete product; the composite material formed by adding the polypropylene fiber has the advantages of high tensile strength, high ultimate elongation and good alkali resistance, overcomes the defects of low tensile strength, low ultimate elongation and brittleness of the existing concrete, has the characteristics of light weight, high strength, durability, heat preservation, sound insulation, fire prevention, impermeability and good anchoring performance, and has the advantages of convenient construction, strong machinability, capability of reducing the comprehensive cost of buildings, increasing the use area of the buildings and the like.
Description
Technical Field
The invention relates to a building material, in particular to polypropylene fiber concrete and a production process thereof.
Background
The concrete is one of the most important civil engineering materials in the present generation, and has the characteristics of rich raw materials, low price and simple production process, so that the dosage of the concrete is increased more and more.
The concrete has the characteristics of high compressive strength, good durability, wide strength grade range and the like. These characteristics make it very widely used, not only in various civil engineering, that is shipbuilding, machinery industry, ocean development, geothermal engineering, etc., but also concrete is an important material.
The existing concrete generally has the defects of low tensile strength, small ultimate elongation and brittle property, so that the service life of the concrete is limited, and the maintenance cost is high.
Disclosure of Invention
Based on the defects in the prior art mentioned in the background art, the invention provides the polypropylene fiber concrete and the production process thereof.
The invention overcomes the technical problems by adopting the following technical scheme, and specifically comprises the following steps:
a polypropylene fiber concrete comprises the following components: 10-17 parts of polypropylene fiber, 80-102 parts of cement base material, 5-8.2 parts of water reducing agent, 8-13 parts of fly ash, 2-4 parts of synergist, 4-7.2 parts of talcum powder, 2-4.3 parts of binder, 6-11 parts of expanding agent, 1-3 parts of silane coupling agent, 1-3 parts of slag micro powder and 160 parts of water 120-containing material.
As a further scheme of the invention: the polypropylene fiber concrete comprises the following components: 12-15 parts of polypropylene fiber, 87-95 parts of cement base material, 6-7.5 parts of water reducing agent, 10-11.5 parts of fly ash, 2.5-3.5 parts of synergist, 5-6.5 parts of talcum powder, 2.5-3.5 parts of binder, 8-9.8 parts of expanding agent, 1.5-2.3 parts of silane coupling agent, 1.5-2.3 parts of slag micro powder and 155 parts of water 136-doped material.
As a still further scheme of the invention: the polypropylene fiber concrete comprises the following components: 14 parts of polypropylene fiber, 92 parts of cement base material, 7 parts of water reducing agent, 11 parts of fly ash, 3.2 parts of synergist, 6.2 parts of talcum powder, 3 parts of binder, 9.5 parts of expanding agent, 2 parts of silane coupling agent, 2 parts of slag micro powder and 148 parts of water.
As a still further scheme of the invention: the cement base material is set cement, mortar and portland cement, wherein the ratio of the set cement to the mortar to the portland cement is 5:3: 1.
A process for the production of polypropylene fibre concrete according to any one of claims 1 to 3, comprising the steps of:
step one, proportioning materials, namely weighing the raw materials according to a proportion;
step two, pre-mixing the raw materials, namely adding the polypropylene fibers, the cement base material, the water reducing agent, the fly ash, the binder and the slag micro powder into a mixer for mixing for l0min to obtain a mixture for later use;
step three, fine grinding treatment, namely slowly adding the premixed raw materials into a grinder to be finely ground for 20min and sieving the mixture through a 50-mesh sieve, wherein the raw materials are gradually added from small to large in the grinding process;
step four, mixing with water, adding the finely ground raw materials in the step three into a slurry mixer, adding water and stirring to prepare the concrete;
fifthly, aerating and standing, and injecting the finished concrete mixed with the slurry in the fourth step into a mold frame for curing treatment;
and step six, inspecting the concrete product, taking a plurality of test groups as acceptance lots, and respectively detecting the strength and the compressive resistance of the concrete.
As a further scheme of the invention: in the second step, the raw material premixing is carried out in the following sequence:
sequence 1, adding cement base materials into a stirrer, pouring polypropylene fibers, starting the stirrer to stir for 2min, wherein the stirring speed is;
sequence 2, adding the fly ash and the slag micro powder into a stirrer at the same time, increasing the rotating speed of the stirrer to the speed ratio of 1:80, and stirring for 3 min;
and 3, finally adding the water reducing agent and the binding agent into the stirrer, and mixing and stirring for 5 min.
As a still further scheme of the invention: the fine grinding treatment in the fourth step comprises the following parts:
step S1, adding a little water liquid into the slurry mixer, making the water liquid submerge the bottom of the slurry mixer, and starting the slurry mixer when the liquid level submerges the bottom of the slurry mixer;
step S2, equally dividing the finely ground raw materials and the rest water liquid in the third step into a plurality of parts, wherein the equal parts of the raw materials and the water liquid are the same, and gradually and equally adding the water liquid and the raw materials into a pulp stirring machine;
and step S3, after the raw materials and the water liquid are all added into the slurry stirring machine, adding the synergist, the talcum powder, the expanding agent and the silane coupling agent into the slurry stirring machine, and fully stirring for 20 min.
As a still further scheme of the invention: in the fifth step, the maintenance treatment comprises the following steps:
part 1, after concrete is injected into a mould frame, air is uniformly charged into the mould frame, and the concrete is subjected to static oxygen foaming and curing treatment;
part 2, foaming, curing and cutting the static oxygen into building blocks or plates with various specifications;
and part 3, feeding the building blocks or the plates into a still kettle by a steam curing vehicle, and curing at high temperature saturated steam to form the porous light concrete product.
As a still further scheme of the invention: in the sixth step, the acceptance batch is divided into three groups of test pieces, wherein the production conditions of the concrete can be kept consistent for a long time, the strength variation performance of the concrete of the same variety is kept stable, and the three groups of continuous test pieces are taken as one acceptance batch; the production conditions of the concrete can not be kept consistent in a long time, the strength variability of the concrete can not be kept stable, and ten continuous test sets are taken as an acceptance lot.
Compared with the prior art, the invention has the following advantages after adopting the components: the concrete has the advantages of light weight, high strength, durability, heat preservation, sound insulation, fire prevention, impermeability and good anchoring performance, and has the advantages of convenient construction, strong machinability, capability of reducing the comprehensive cost of buildings, increasing the use area of the buildings and the like.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the accompanying examples. The preferred embodiments of the present invention are given in the examples. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Example one
In the embodiment of the invention, the polypropylene fiber concrete comprises the following components: 10 parts of polypropylene fiber, 80 parts of cement base material, 5 parts of water reducing agent, 8 parts of fly ash, 2 parts of synergist, 4 parts of talcum powder, 2 parts of binder, 6 parts of expanding agent, 1 part of silane coupling agent, 1 part of slag micro powder and 120 parts of water;
the cement base material is set cement, mortar and portland cement, wherein the ratio of the set cement to the mortar to the portland cement is 5:3: 1.
Example two
In the embodiment of the invention, the polypropylene fiber concrete comprises the following components: 12 parts of polypropylene fiber, 87 parts of cement base material, 6 parts of water reducing agent, 10 parts of fly ash, 2.5 parts of synergist, 5 parts of talcum powder, 2.5 parts of binder, 8 parts of expanding agent, 1.5 parts of silane coupling agent, 1.5 parts of slag micro powder and 136 parts of water;
the cement base material is set cement, mortar and portland cement, wherein the ratio of the set cement to the mortar to the portland cement is 5:3: 1.
EXAMPLE III
In the embodiment of the invention, the polypropylene fiber concrete comprises the following components: 14 parts of polypropylene fiber, 92 parts of cement base material, 7 parts of water reducing agent, 11 parts of fly ash, 3.2 parts of synergist, 6.2 parts of talcum powder, 3 parts of binder, 9.5 parts of expanding agent, 2 parts of silane coupling agent, 2 parts of slag micro powder and 148 parts of water;
the cement base material is set cement, mortar and portland cement, wherein the ratio of the set cement to the mortar to the portland cement is 5:3: 1.
Example four
In the embodiment of the invention, the polypropylene fiber concrete comprises the following components: 15 parts of polypropylene fiber, 95 parts of cement base material, 7.5 parts of water reducing agent, 11.5 parts of fly ash, 3.5 parts of synergist, 6.5 parts of talcum powder, 3.5 parts of binder, 9.8 parts of expanding agent, 2.3 parts of silane coupling agent, 2.3 parts of slag micro powder and 155 parts of water;
the cement base material is set cement, mortar and portland cement, wherein the ratio of the set cement to the mortar to the portland cement is 5:3: 1.
EXAMPLE five
In the embodiment of the invention, the polypropylene fiber concrete comprises the following components: 17 parts of polypropylene fiber, 102 parts of cement base material, 8.2 parts of water reducing agent, 13 parts of fly ash, 4 parts of synergist, 7.2 parts of talcum powder, 4.3 parts of binder, 11 parts of expanding agent, 3 parts of silane coupling agent, 3 parts of slag micro powder and 160 parts of water;
the cement base material is set cement, mortar and portland cement, wherein the ratio of the set cement to the mortar to the portland cement is 5:3: 1.
EXAMPLE six
A production process of polypropylene fiber concrete comprises the following steps:
step one, proportioning materials, namely weighing the raw materials according to a proportion;
step two, pre-mixing the raw materials, namely adding the polypropylene fibers, the cement base material, the water reducing agent, the fly ash, the binder and the slag micro powder into a mixer for mixing for l0min to obtain a mixture for later use;
the raw material premixing comprises the following steps:
sequence 1, adding cement base materials into a stirrer, pouring polypropylene fibers, starting the stirrer to stir for 2min, wherein the stirring speed is;
sequence 2, adding the fly ash and the slag micropowder into a stirrer at the same time, increasing the rotating speed of the stirrer to the speed ratio of 1:80, taking a four-stage motor as an example, namely 1450r/min divided by 80, which is equal to 18 r/min, and stirring for 3 min;
sequence 3, finally adding the water reducing agent and the binding agent into a stirrer, and mixing and stirring for 5 min;
step three, fine grinding treatment, namely slowly adding the premixed raw materials into a grinder to be finely ground for 20min and sieving the raw materials by a 50-mesh sieve, wherein the raw materials are gradually added from less to most in the grinding process, so that the starting load of the grinder is prevented from being too large;
step four, mixing with water, adding the finely ground raw materials in the step three into a slurry mixer, adding water and stirring to prepare the concrete, wherein the concrete comprises the following parts:
step S1, adding a little water liquid into the slurry mixer, making the water liquid submerge the bottom of the slurry mixer, and starting the slurry mixer when the liquid level submerges the bottom of the slurry mixer;
step S2, equally dividing the finely ground raw materials and the rest water liquid in the third step into a plurality of parts, wherein the equal parts of the raw materials and the water liquid are the same, and gradually and equally adding the water liquid and the raw materials into a pulp stirring machine;
step S3, after the raw materials and the water liquid are all added into the slurry mixing machine, adding the synergist, the talcum powder, the expanding agent and the silane coupling agent into the slurry mixing machine, and fully mixing for 20 min;
fifthly, aerating and standing, and injecting the finished concrete mixed with the slurry in the fourth step into a mold frame for curing treatment; in the fifth step, the maintenance treatment comprises the following steps:
part 1, after concrete is injected into a mould frame, air is uniformly charged into the mould frame, and the concrete is subjected to static oxygen foaming and curing treatment;
part 2, foaming, curing and cutting the static oxygen into building blocks or plates with various specifications;
part 3, the building blocks or plates are sent into a still kettle by a steam curing vehicle, and porous light concrete products are formed under the high-temperature saturated steam curing;
step six, inspecting the concrete product, taking a plurality of test groups as acceptance lots, and respectively detecting the strength and the compressive resistance of the concrete;
wherein, the production conditions of the concrete can be kept consistent for a long time, the strength variation performance of the concrete of the same variety can be kept stable, and three continuous groups of test pieces are taken as an acceptance lot; the production conditions of the concrete can not be kept consistent in a long time, the strength variability of the concrete can not be kept stable, and ten continuous test sets are taken as an acceptance lot.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above examples, and the specific components thereof are allowed to vary. But all changes which come within the scope of the invention are intended to be embraced therein.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Claims (9)
1. The polypropylene fiber concrete is characterized by comprising the following components: 10-17 parts of polypropylene fiber, 80-102 parts of cement base material, 5-8.2 parts of water reducing agent, 8-13 parts of fly ash, 2-4 parts of synergist, 4-7.2 parts of talcum powder, 2-4.3 parts of binder, 6-11 parts of expanding agent, 1-3 parts of silane coupling agent, 1-3 parts of slag micro powder and 160 parts of water 120-containing material.
2. The polypropylene fiber concrete according to claim 1, comprising the following components: 12-15 parts of polypropylene fiber, 87-95 parts of cement base material, 6-7.5 parts of water reducing agent, 10-11.5 parts of fly ash, 2.5-3.5 parts of synergist, 5-6.5 parts of talcum powder, 2.5-3.5 parts of binder, 8-9.8 parts of expanding agent, 1.5-2.3 parts of silane coupling agent, 1.5-2.3 parts of slag micro powder and 155 parts of water 136-doped material.
3. The polypropylene fiber concrete according to claim 1, comprising the following components: 14 parts of polypropylene fiber, 92 parts of cement base material, 7 parts of water reducing agent, 11 parts of fly ash, 3.2 parts of synergist, 6.2 parts of talcum powder, 3 parts of binder, 9.5 parts of expanding agent, 2 parts of silane coupling agent, 2 parts of slag micro powder and 148 parts of water.
4. The polypropylene fiber concrete according to any one of claims 1 to 3, wherein the cement base materials are set cement, mortar and portland cement, and the ratio of the set cement, the mortar and the portland cement is 5:3: 1.
5. A process for the production of polypropylene fibre concrete according to any one of claims 1 to 3, comprising the steps of:
step one, proportioning materials, namely weighing the raw materials according to a proportion;
step two, pre-mixing the raw materials, namely adding the polypropylene fibers, the cement base material, the water reducing agent, the fly ash, the binder and the slag micro powder into a mixer for mixing for l0min to obtain a mixture for later use;
step three, fine grinding treatment, namely slowly adding the premixed raw materials into a grinder to be finely ground for 20min and sieving the mixture through a 50-mesh sieve, wherein the raw materials are gradually added from small to large in the grinding process;
step four, mixing with water, adding the finely ground raw materials in the step three into a slurry mixer, adding water and stirring to prepare the concrete;
fifthly, aerating and standing, and injecting the finished concrete mixed with the slurry in the fourth step into a mold frame for curing treatment;
and step six, inspecting the concrete product, taking a plurality of test groups as acceptance lots, and respectively detecting the strength and the compressive resistance of the concrete.
6. The production process of polypropylene fiber concrete according to claim 5, wherein in the second step, the raw material premixing is divided into the following sequence:
sequence 1, adding cement base materials into a stirrer, pouring polypropylene fibers, starting the stirrer to stir for 2min, wherein the stirring speed is;
sequence 2, adding the fly ash and the slag micro powder into a stirrer at the same time, increasing the rotating speed of the stirrer to the speed ratio of 1:80, and stirring for 3 min;
and 3, finally adding the water reducing agent and the binding agent into the stirrer, and mixing and stirring for 5 min.
7. The process for producing polypropylene fiber concrete according to claim 5, wherein the fine grinding treatment in the fourth step comprises the following steps:
step S1, adding a little water liquid into the slurry mixer, making the water liquid submerge the bottom of the slurry mixer, and starting the slurry mixer when the liquid level submerges the bottom of the slurry mixer;
step S2, equally dividing the finely ground raw materials and the rest water liquid in the third step into a plurality of parts, wherein the equal parts of the raw materials and the water liquid are the same, and gradually and equally adding the water liquid and the raw materials into a pulp stirring machine;
and step S3, after the raw materials and the water liquid are all added into the slurry stirring machine, adding the synergist, the talcum powder, the expanding agent and the silane coupling agent into the slurry stirring machine, and fully stirring for 20 min.
8. The production process of polypropylene fiber concrete according to claim 5, wherein in the fifth step, the curing treatment comprises the following steps:
part 1, after concrete is injected into a mould frame, air is uniformly charged into the mould frame, and the concrete is subjected to static oxygen foaming and curing treatment;
part 2, foaming, curing and cutting the static oxygen into building blocks or plates with various specifications;
and part 3, feeding the building blocks or the plates into a still kettle by a steam curing vehicle, and curing at high temperature saturated steam to form the porous light concrete product.
9. The production process of polypropylene fiber concrete according to claim 5, wherein in the sixth step, the acceptance lots are divided into three groups of test pieces, wherein the production conditions of the concrete can be kept consistent for a long time, the strength variation performance of the same variety of concrete can be kept stable, and the three groups of test pieces are continuously selected as one acceptance lot; the production conditions of the concrete can not be kept consistent in a long time, the strength variability of the concrete can not be kept stable, and ten continuous test sets are taken as an acceptance lot.
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| CN202110403974.4A CN113149552A (en) | 2021-04-15 | 2021-04-15 | Polypropylene fiber concrete and production process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113443868A (en) * | 2021-04-01 | 2021-09-28 | 王逵 | Heat-resistant concrete and production process thereof |
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