CN112321233A - Ordinary support-free permanent template frame and preparation method thereof - Google Patents
Ordinary support-free permanent template frame and preparation method thereof Download PDFInfo
- Publication number
- CN112321233A CN112321233A CN202011232454.3A CN202011232454A CN112321233A CN 112321233 A CN112321233 A CN 112321233A CN 202011232454 A CN202011232454 A CN 202011232454A CN 112321233 A CN112321233 A CN 112321233A
- Authority
- CN
- China
- Prior art keywords
- ratio
- template
- permanent formwork
- water
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
- E04B2/8647—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties going through the forms
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
-
- 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
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/05—Materials having an early high strength, e.g. allowing fast demoulding or formless casting
Abstract
The invention discloses a common support-free permanent template frame and a preparation method thereof. The invention has the beneficial effects that: the permanent template is thinner and has higher strength, the interval between the counter-pulling connecting pieces can be larger, the number of the connecting pieces can be reduced to a great extent, and the cost of the counter-pulling connecting pieces is reduced. Higher early strength, i.e. 24 hours of form removal, greatly improves production efficiency. The fluidity is large, the self-leveling can be realized, and the vibration is not needed when the template is formed. And the cost is lower by using the ordinary portland cement.
Description
Technical Field
The invention relates to a common support-free permanent formwork, in particular to a common support-free permanent formwork frame and a preparation method thereof, belonging to the technical field of building materials.
Background
Because the population of China is large and the population dividend has obvious advantages, the labor-intensive traditional building industry can be developed vigorously, but the population dividend of China is gradually weakened in the last ten years, the traditional labor force of the building industry is rapidly reduced in the next ten years, and the building industry of China must be developed towards industrialization. The support-free permanent template meets the requirements of building industrialization in the aspects of saving field labor, saving turnover materials and the like.
The PI system of the building technology is available for similar products in the market at present, the thickness of template materials is 30mm, the occupied building area is large, the components are heavier, the distance between the oppositely-pulled connecting pieces is 20cm, the number of the connecting pieces is large, the cost is high, the glass fiber gridding cloth or a steel wire mesh sheet is contained in the template, the cost is increased, the health of constructors is extremely easily damaged by the glass fibers, and the template removing time is long.
Disclosure of Invention
The present invention is directed to solving the problems by providing a general support-free permanent formwork frame and a method for manufacturing the same.
The invention realizes the purpose through the following technical scheme: a generic, support-free permanent formwork frame comprising a formwork; the formwork is arranged on two sides of the steel bar respectively, the height between the two formworks is the height of a wall body, the formworks are connected through a counter-pull connecting piece, and the material of the formwork comprises ordinary portland cement, natural sand, silica fume, fly ash, a water reducing agent, an antifoaming agent, rubber powder and an early strength agent; the concrete comprises, by weight, 400-500 parts of ordinary portland cement, 400-500 parts of natural sand, 20-30 parts of silica fume, 10-15 parts of fly ash, 3-5 parts of a water reducing agent, 0.2-0.3 part of an antifoaming agent, 4-5 parts of rubber powder, 1-2 parts of an early strength agent and 0.13-0.14 part of a template, wherein the silica fume can fill pores among cement particles and simultaneously reacts with hydration products to generate gel, and the gel reacts with the cement in an alkaline environment to generate the gel;
the preparation method comprises the preparation in a dry mixing mode or the preparation by mixing on site;
the preparation method of the dry mixing type comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
step two, fully mixing the weighed raw materials, and storing the mixture in a dry place for not more than 3 months;
and step three, adding water according to the water-material ratio when in use, slowly stirring according to preset time, and then quickly stirring, thus obtaining the product which can be molded.
Wherein the slow stirring speed is 55-60r/min, and the fast stirring speed is 110-120 r/min.
The field mixing preparation comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
and step two, fully mixing the raw materials according to the mixing proportion, adding water according to the water-material ratio, slowly stirring according to preset time, then quickly stirring, and then molding.
Wherein the slow stirring speed is 55-60r/min, the fast stirring speed is 110-120r/min, the slow stirring speed is 58r/min, and the fast stirring speed is 115 r/min. .
As a still further scheme of the invention: the thickness of the template is 20 mm.
As a still further scheme of the invention: the counter-pull connecting pieces are distributed at 40cm intervals in the transverse and vertical directions.
As a still further scheme of the invention: the ordinary portland cement adopts 425-grade ordinary portland cement.
As a still further scheme of the invention: the natural sand is one or more of quartz sand, carborundum and river sand.
As a still further scheme of the invention: the silica fume can fill the pores among cement particles, simultaneously generates gel with hydration products, and reacts with cement in an alkaline environment to generate gel.
As a still further scheme of the invention: the fly ash is industrial waste fly ash, and the fly ash plays roles of micro-aggregate and ball effect in the material.
As a still further scheme of the invention: the dosage of the water reducing agent enables the compressive strength of the template material to be enhanced along with the reduction of the water-to-gel ratio of the water reducing agent in a certain range.
As a still further scheme of the invention: the defoaming agent is used for reducing bubbles of the material and increasing the compactness of the material.
The invention has the beneficial effects that: the silica fume in the template can fill the pores among cement particles, and simultaneously generates gel with a hydration product, the silica fume reacts with the cement in an alkaline environment to generate the gel, so that the folding resistance, compression resistance and permeability resistance of the template material are improved, the defoaming agent in the template is used for reducing bubbles of the material and increasing the compactness of the material, the template is thinner and has higher strength, the distance between the opposite-pulling connecting pieces can be larger, the number of the connecting pieces can be reduced to a great extent, and the cost of the opposite-pulling connecting pieces is reduced. Higher early strength, i.e. 24 hours of form removal, greatly improves production efficiency. The fluidity is large, the self-leveling can be realized, and the vibration is not needed when the template is formed. And the cost is lower by using the ordinary portland cement.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. template, 2, split connectors and 3, reinforcing steel bars.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a general support-free permanent formwork frame includes a formwork 1; the formwork 1 is respectively arranged on two sides of a steel bar 3, the height between the two formworks 1 is the height of a wall body, the formworks 1 are connected through a counter-pull connecting piece 2, and the material of the formwork 1 comprises ordinary portland cement, natural sand, silica fume, fly ash, a water reducing agent, an antifoaming agent, rubber powder and an early strength agent; the proportion of the ordinary Portland cement is 450 parts, the proportion of the natural sand is 450 parts, the silica fume can fill pores among cement particles and simultaneously reacts with hydration products to generate gel, the gel is generated by reaction with the cement in an alkaline environment, the fracture resistance, compression resistance and permeability resistance of a template material are improved, the proportion of the silica fume is 25 parts, the proportion of the fly ash is 13 parts, the proportion of the water reducing agent is 4 parts, the defoaming agent is used for reducing bubbles of the material and increasing the compactness of the material, the proportion of the defoaming agent is 0.25 part, the proportion of the rubber powder is 4.5 parts, and the proportion of the early strength agent is 1.5 parts;
the preparation method comprises the preparation in a dry mixing mode or the preparation by mixing on site;
the preparation method of the dry mixing type comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
step two, fully mixing the weighed raw materials, and storing the mixture in a dry place for not more than 3 months;
and step three, when the water-material mixing machine is used, water is added according to the water-material ratio, the mixture is slowly stirred for 1 minute and quickly stirred for 1 minute, and then the mixture is quickly stirred for 1 minute, so that the mixture can be molded.
Wherein the slow stirring speed is 60r/min, and the fast stirring speed is 120 r/min.
The field mixing preparation comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
and step two, fully mixing the raw materials according to the mixing proportion, adding water according to the water-material ratio, stirring for 1 minute slowly during stirring, stirring for 1 minute quickly, then stirring for 1 minute quickly, and then molding.
Wherein the slow stirring speed is 60r/min, the fast stirring speed is 120r/min, the slow stirring speed is 58r/min, and the fast stirring speed is 115 r/min. .
In the embodiment of the present invention, the thickness of the form 1 is 20mm, and the form has higher strength.
In the embodiment of the invention, the counter-pull connecting pieces 2 are distributed at intervals of 40cm in the horizontal and vertical directions, so that the distance between the counter-pull connecting pieces 2 is larger, the number of the counter-pull connecting pieces 2 can be reduced to a great extent, and the cost of the counter-pull connecting pieces 2 is reduced.
In the embodiment of the invention, the ordinary portland cement grade 425 is adopted, so that the price is low, and the absolute price advantage is achieved.
In the embodiment of the invention, the natural sand is one or more of quartz sand, carborundum and river sand.
In the embodiment of the invention, the fly ash is industrial waste fly ash, and the fly ash plays roles of micro aggregate and ball effect in the material, fills a material system, improves the fluidity, and can replace part of cement, thereby reducing the cost.
In the embodiment of the invention, the water reducing agent is used in an amount such that the compressive strength of the template material is increased along with the decrease of the water-to-gel ratio of the water reducing agent in a certain range.
In the embodiment of the invention, the early strength agent is added, the 1d compressive strength of the early strength agent can reach more than 20MPa, and the early strength agent is used for shortening the form removal time and improving the efficiency.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A generic, support-free permanent formwork frame characterized by: comprises a template (1); the formworks (1) are respectively arranged on two sides of the steel bar (3), the height between the two formworks (1) is the height of a wall body, and the formworks (1) are connected through a counter-pull connecting piece (2);
the template (1) is made of ordinary portland cement, natural sand, silica fume, fly ash, a water reducing agent, a defoaming agent, rubber powder and an early strength agent;
the ratio of ordinary portland cement is 400 ~ 500 parts, the ratio of natural sand is 400 ~ 500 parts, the silica fume can fill the hole between the cement granule, generates the gel with the hydration product simultaneously, reacts with cement under the alkaline environment and generates the gel, the ratio of silica fume is 20 ~ 30 parts, the ratio of fly ash is 10 ~ 15 parts, the ratio of water-reducing agent is 3 ~ 5 parts, the defoaming agent is used for reducing the bubble of material, increases the closely knit degree of material, the ratio of defoaming agent is 0.2 ~ 0.3 part, the ratio of rubber powder is 4 ~ 5 parts, the ratio of early strength agent is 1 ~ 2 parts, the material water-to-material ratio of template (1) is 0.13 ~ 0.14.
2. A generic free-standing permanent formwork frame and method of making the same according to claim 1, wherein: the thickness of the template (1) is 20 mm.
3. A generally free-standing permanent formwork frame as claimed in claim 1, wherein: the counter-pull connecting pieces (2) are distributed at intervals of 40cm in the horizontal and vertical directions.
4. A generally free-standing permanent formwork frame as claimed in claim 1, wherein: the ordinary portland cement adopts 425-grade ordinary portland cement.
5. A generally free-standing permanent formwork frame as claimed in claim 1, wherein: the natural sand is one or more of quartz sand, carborundum and river sand.
6. A generally free-standing permanent formwork frame as claimed in claim 1, wherein: the fly ash is industrial waste fly ash.
7. A generally free-standing permanent formwork frame as claimed in claim 1, wherein: the dosage of the water reducing agent enables the compressive strength of the template material to be enhanced along with the reduction of the water-to-gel ratio of the water reducing agent in a certain range.
8. A method for preparing a normal support-free permanent formwork frame according to claim 1, wherein the method comprises the following steps: the preparation method of the template frame comprises the preparation in a dry mixing mode
The preparation method of the dry mixing type comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
step two, fully mixing the weighed raw materials and storing the mixture in a dry place;
adding water according to the water-material ratio when in use, slowly stirring according to preset time, and then quickly stirring, and then molding;
wherein the slow stirring speed is 55-60r/min, and the fast stirring speed is 110-120 r/min.
9. A method for preparing a normal support-free permanent formwork frame according to claim 1, wherein the method comprises the following steps: the template frame preparation method comprises the steps of mixing and preparing on site;
the field mixing preparation comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
step two, fully mixing the raw materials according to a mixing ratio, adding water according to a water-material ratio, slowly stirring according to preset time, and then quickly stirring, thus obtaining the product by molding;
wherein the slow stirring speed is 55-60r/min, and the fast stirring speed is 110-120 r/min.
10. A method of making a generally free-standing permanent formwork frame as claimed in claim 9, wherein: the slow stirring speed is 58r/min, and the fast stirring speed is 115 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011232454.3A CN112321233A (en) | 2020-11-06 | 2020-11-06 | Ordinary support-free permanent template frame and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011232454.3A CN112321233A (en) | 2020-11-06 | 2020-11-06 | Ordinary support-free permanent template frame and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112321233A true CN112321233A (en) | 2021-02-05 |
Family
ID=74316806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011232454.3A Pending CN112321233A (en) | 2020-11-06 | 2020-11-06 | Ordinary support-free permanent template frame and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112321233A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828579A (en) * | 2012-08-17 | 2012-12-19 | 常州市固邦复合材料科技有限公司 | Keel embedded-buckled assembling anti-cracking anti-seepage permanent cylinder shuttering |
| CN103266760A (en) * | 2013-05-14 | 2013-08-28 | 浙江大学 | Permanent beam template made of fiber woven mesh reinforced cement based composite material and method for manufacturing permanent beam template |
| JP2016088791A (en) * | 2014-10-31 | 2016-05-23 | 太平洋セメント株式会社 | Board for embedded form |
| CN105731942A (en) * | 2016-01-19 | 2016-07-06 | 中国建筑材料科学研究总院 | Cement-based composite material used for 3D printing as well as preparation method and application thereof |
| CN106193389A (en) * | 2016-08-31 | 2016-12-07 | 广州市轻能建材有限公司 | One is exempted to tear building template assembly open |
| CN106630843A (en) * | 2016-12-28 | 2017-05-10 | 嘉华特种水泥股份有限公司 | Cement-based self-leveling anti-cracking mortar |
| CN106958312A (en) * | 2017-05-16 | 2017-07-18 | 哈尔滨工业大学（威海） | A kind of non-dismantling formwork and its construction method |
| CN107313550A (en) * | 2017-07-03 | 2017-11-03 | 广州容联建筑科技有限公司 | A kind of fine concrete thin-slab structure for building industrialization |
| CN207211446U (en) * | 2017-07-03 | 2018-04-10 | 广州容联建筑科技有限公司 | A kind of reinforced concrete wall cavity body structure |
| CN108179837A (en) * | 2017-11-22 | 2018-06-19 | 福建瑞森新材料股份有限公司 | A kind of high-performance composite cement formwork free of demolition and its auxiliary plan |
| CN108558335A (en) * | 2018-01-12 | 2018-09-21 | 广东省建筑科学研究院集团股份有限公司 | A kind of high-performance cement base grouting material |
| EP3398917A1 (en) * | 2015-11-10 | 2018-11-07 | Yara International ASA | Calcium nitrate as additive in steel reinforced concrete having an elevated resistance towards carbonation |
-
2020
- 2020-11-06 CN CN202011232454.3A patent/CN112321233A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828579A (en) * | 2012-08-17 | 2012-12-19 | 常州市固邦复合材料科技有限公司 | Keel embedded-buckled assembling anti-cracking anti-seepage permanent cylinder shuttering |
| CN103266760A (en) * | 2013-05-14 | 2013-08-28 | 浙江大学 | Permanent beam template made of fiber woven mesh reinforced cement based composite material and method for manufacturing permanent beam template |
| JP2016088791A (en) * | 2014-10-31 | 2016-05-23 | 太平洋セメント株式会社 | Board for embedded form |
| EP3398917A1 (en) * | 2015-11-10 | 2018-11-07 | Yara International ASA | Calcium nitrate as additive in steel reinforced concrete having an elevated resistance towards carbonation |
| CN105731942A (en) * | 2016-01-19 | 2016-07-06 | 中国建筑材料科学研究总院 | Cement-based composite material used for 3D printing as well as preparation method and application thereof |
| CN106193389A (en) * | 2016-08-31 | 2016-12-07 | 广州市轻能建材有限公司 | One is exempted to tear building template assembly open |
| CN106630843A (en) * | 2016-12-28 | 2017-05-10 | 嘉华特种水泥股份有限公司 | Cement-based self-leveling anti-cracking mortar |
| CN106958312A (en) * | 2017-05-16 | 2017-07-18 | 哈尔滨工业大学（威海） | A kind of non-dismantling formwork and its construction method |
| CN107313550A (en) * | 2017-07-03 | 2017-11-03 | 广州容联建筑科技有限公司 | A kind of fine concrete thin-slab structure for building industrialization |
| CN207211446U (en) * | 2017-07-03 | 2018-04-10 | 广州容联建筑科技有限公司 | A kind of reinforced concrete wall cavity body structure |
| CN108179837A (en) * | 2017-11-22 | 2018-06-19 | 福建瑞森新材料股份有限公司 | A kind of high-performance composite cement formwork free of demolition and its auxiliary plan |
| CN108558335A (en) * | 2018-01-12 | 2018-09-21 | 广东省建筑科学研究院集团股份有限公司 | A kind of high-performance cement base grouting material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220144700A1 (en) | High strength coral concrete and preparation method thereof | |
| CN105217995B (en) | A kind of Concrete synergist and preparation method thereof | |
| CN114591049B (en) | Method for preparing green mortar by using construction waste | |
| CN104529333A (en) | Waste sintered brick recycled C30 concrete and preparation method thereof | |
| CN108892450B (en) | Low-shrinkage high-strength concrete material mainly prepared from aeolian sand and gobi gravel and preparation method thereof | |
| CN105541223A (en) | PHC pipe pile concrete and preparation method thereof | |
| CN106587711B (en) | Special additive for self-dense concrete is used in a kind of perfusion of enclosure space | |
| CN101274835A (en) | Micro-foaming light gypsum decorative material | |
| CN102659376A (en) | Water proof baking-free brick with ardealite serving as main material and manufacturing method thereof | |
| CN107311559A (en) | Waste ceramic fine concrete and preparation method thereof | |
| CN102452826A (en) | Low-carbon self-leveling ground leveling gypsum formula | |
| CN104556905A (en) | Waste sintered brick recycled C25 concrete and preparation method thereof | |
| CN112608093A (en) | Dry-mixed plastering mortar prepared from recycled aggregate and preparation method thereof | |
| CN112551988A (en) | Ultrahigh-ductility concrete for earthquake-resistant engineering and preparation method thereof | |
| CN105174855A (en) | C30 micro-expansive self-compacting concrete | |
| CN105669076A (en) | Thixotropic agent for ballastless track bed-plate concrete | |
| CN103449776A (en) | Non-autoclaved aerated concrete block manufactured from building slurry and manufacturing method thereof | |
| CN108530006B (en) | Reinforcing steel bar sleeve grouting material for assembly type structure connection and preparation method thereof | |
| CN103122672A (en) | Ring beam brick | |
| CN112321233A (en) | Ordinary support-free permanent template frame and preparation method thereof | |
| CN113372086A (en) | Method for preparing light-transmitting concrete material by using active excited copper tailings | |
| CN109400066A (en) | A kind of photovoltaic High Strength Regenerated Concrete tubular pole and preparation method thereof | |
| CN102690093A (en) | High-strength water resistance phosphogypsum steam-cured brick and preparation method thereof | |
| CN114591050A (en) | High-strength cement composite material and processing method thereof | |
| CN101781110A (en) | Reactive powder concrete for cable trough cover boards of railways |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210205 |