CN110615641A - Foam concrete formula for platform back backfilling and processing equipment thereof - Google Patents
Foam concrete formula for platform back backfilling and processing equipment thereof Download PDFInfo
- Publication number
- CN110615641A CN110615641A CN201910946774.6A CN201910946774A CN110615641A CN 110615641 A CN110615641 A CN 110615641A CN 201910946774 A CN201910946774 A CN 201910946774A CN 110615641 A CN110615641 A CN 110615641A
- Authority
- CN
- China
- Prior art keywords
- foam concrete
- fly ash
- feeder
- silica fume
- foam
- 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
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
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses a foam concrete formula for platform back backfilling and processing equipment thereof. The formula comprises the following components: 0.5-5 wt% of foaming agent, 20-40 wt% of cement, 20-60 wt% of fly ash and silica fume, 0.5-5 wt% of redispersible latex powder, 0.25-5 wt% of other additives and 15-30 wt% of water. The processing equipment comprises a foaming system and a mixing system, wherein a static impeller is arranged in a static pipeline mixer in the foaming system; a throttling device is arranged in the foam maker, the opening angle of the pipe wall of the throttling front section is 17-23 degrees, the opening angle of the pipe wall of the throttling rear section is 4-8 degrees, and the maximum pipe diameter of the throttling front section is equal to that of the throttling rear section; the mixing system comprises a cement feeder, a redispersible latex powder feeder, an auxiliary agent feeder, a silica fume feeder, a fly ash feeder, a silica fume and fly ash mixer and a blender. The foam concrete formula improves the properties of the foam concrete, such as strength, impermeability, frost resistance and the like, and processing equipment can obviously improve the foam uniformity and foam diameter controllability of the foam concrete and simplify the foam concrete foaming process.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a foam concrete formula for back filling of a platform and processing equipment thereof.
Background
The step back backfill refers to a bridge, a culvert, a channel, a retaining wall, a conical slope and the like, wherein after main structures of highways such as the bridge, the culvert (channel) and the like are finished, a left part between the structures and a roadbed is filled by materials meeting certain requirements in a layered mode. The deformation and stability of the back filling material are the difficult problems which are puzzled to the highway boundary for a long time, the compactness of the back filling material is improved, and the key of reducing the settlement of the back embankment and solving the settlement of the back is realized.
The foam concrete has the excellent performances of low heat conductivity coefficient, light weight, convenience for construction (without vibration and mechanical rolling), self-support after curing, small side pressure and the like, and is widely used for building heat preservation and insulation, goaf backfill, underground pipeline protection and the like. In recent years, foam concrete is used for back-filling of platforms, and compared with functional foam concrete with sound insulation, heat insulation, fire resistance and the like, the foam concrete used for back-filling of platforms is characterized by higher requirements on strength, anti-permeability performance and anti-freezing performance of the foam concrete.
The foam concrete foaming agent is widely applied to synthetic foaming agents, protein foaming agents and compound foaming agents at present, wherein the compound foaming agent can give consideration to the quantity and the strength of foam by reasonably proportioning the foaming agent, the foam stabilizer, the auxiliary agent and the like. At present, foam concrete foaming modes can be divided into a high-speed impeller type, a high-pressure air type and an air blowing medium-low pressure type, a foaming agent solution is atomized by high-pressure air, then foaming is carried out through a foaming pipe, stainless steel wires and the like are generally filled in the foaming pipe, and the foam diameter and the foaming amount of foam are controlled through the porosity of the foaming pipe and the resistance of fillers. The foam prepared by the foaming process has large and uneven foam diameter, the foam diameter is difficult to control, and the subsequent preparation of the foam concrete can cause unreasonable bubble spacing coefficient, easily cause foam merging and cracking and influence the mechanical strength of the foam concrete.
In the preparation process of foam concrete, admixtures such as fly ash and silica fume are usually added in order to save cement and improve the performance of concrete. The addition of fly ash and silica fume can improve the bleeding property, the fluidity and the pumping property of the foam concrete, and improve the strength, the impermeability, the freezing resistance and other properties of the hardened concrete. By reasonably proportioning various admixtures and optimizing the preparation process, the performance of the foam concrete, particularly the performance of the concrete such as strength, impermeability, frost resistance and the like can be obviously improved, so that the foam concrete is suitable for the back filling engineering of the platform.
Disclosure of Invention
The invention aims to overcome the technical defects of the existing foam concrete for the platform back backfilling, and provides the foam concrete which is uniform in foaming, controllable in foam diameter, good in flowability, high in strength, anti-seepage and anti-freezing, is suitable for the platform back backfilling and processing equipment thereof, so that the construction quality of the platform back backfilling is improved, the settlement of a platform back roadbed is avoided, the uneven settlement of roadbeds at two ends of a later-stage structure is reduced, the phenomenon of bumping at a bridge head is avoided, the driving comfort is improved, and the later-stage maintenance cost is reduced.
The technical scheme is as follows:
a foam concrete formula for back filling of a platform is characterized by comprising the following components: 0.5-5 wt% of foaming agent, 20-40 wt% of cement, 20-60 wt% of fly ash and silica fume, 0.5-5 wt% of redispersible latex powder, 0.25-5 wt% of other additives and 15-30 wt% of water, wherein:
the foaming agent comprises, by mass, 2-4 parts of sodium dodecyl benzene sulfonate, 5-7 parts of gelatin microcapsules, 0.2-0.5 part of polyacrylamide and 0.5-0.8 part of hydroxymethyl cellulose;
the mass ratio of the fly ash to the silica fume is 4:1, the ignition loss of the fly ash is 1-15%, and the content of particles with the particle size of more than 45 mu m is lower than 45%; the average particle size of the silica fume is 0.1 mu m, and the specific surface area is more than 15 square meters per gram.
Furthermore, the gelatin microcapsule used in the foaming agent has a particle size of 100-200 μm, the wall material is gelatin, and the core material is at least one small-molecule inert gas selected from nitrogen, hydrogen or helium.
Further, the redispersible latex powder is vinyl acetate and ethylene copolymer latex powder.
Further, the other auxiliary agents comprise a water repellent, a water reducing agent and a plasticizer.
Further, the cement is designated 325 or 425.
A processing equipment of foam concrete for back-filling of a bench is characterized by comprising: foaming system, hybrid system, foam concrete discharger, wherein:
the foaming system comprises a foaming agent feeding hole, a water inlet, a static pipeline mixer, a pump and a foaming device; a static impeller is arranged in the static pipeline mixer, and the materials are fully mixed when fluid passes through the static impeller; a throttling device is arranged in the foam maker, the opening angle of the pipe wall of the throttling front section is 17-23 degrees, the opening angle of the pipe wall of the throttling rear section is 4-8 degrees, and the maximum pipe diameter of the throttling front section is equal to that of the throttling rear section;
the mixing system comprises a cement feeder, a redispersible latex powder feeder, an auxiliary agent feeder, a silica fume feeder, a fly ash feeder, a silica fume and fly ash mixer and a blender.
Further, the mixer for the silica fume and the fly ash is an airflow mixer.
The technical advantages obtained by the invention are as follows:
1) the foaming system is simple, the foaming is uniform, and the foam diameter is controllable. The foaming device disclosed by the invention adopts the throttling device, utilizes the pressure difference for foaming, effectively simplifies a foaming system, and does not need impeller stirring or an air compressor. According to the foaming agent and the foaming device, the gelatin microcapsule is broken at the low-pressure part of the throat of the foaming device to release small-molecule gas to form gas nuclei, the gas nuclei are uniform in size, the foaming pressure difference is stable, and the uniformity of the foam diameter can be ensured; through adjusting the diameter of the throat part of the foam generator, the opening angle of the closure front section and the throttle rear section, the pressure of the throat part of the foam generator can be adjusted, and then the foam diameter is adjusted.
2) The loss on ignition requirement of the fly ash is reduced. The loss on ignition of the fly ash mainly refers to the content of unburned carbon, the loss on ignition of the fly ash is required to be 1-15%, and the loss on ignition of the fly ash in common foam concrete is required to be lower than 8%. The fly ash and the silica fume are used as admixture in a mass ratio of 1:4, and an airflow mixer is used for premixing; the particle size range of the fly ash is about two orders of magnitude higher than that of the silica fume, and the particle size of carbon particles in the fly ash is relatively large, so that the carbon particles adsorb part of the silica fume particles under the action of air flow mixing, the later adsorption of the carbon particles on a foaming agent can be reduced, and the defoaming effect of the foaming agent is reduced; and after the silica fume is adsorbed, the carbon particles show the activity of the silica fume, so that the bonding performance of the silica fume and a cementing material can be enhanced, and the influence of the carbon content (loss on ignition) on the strength of concrete is reduced.
3) The foam concrete has good fluidity, high strength, impermeability and frost resistance. The foam concrete is doped with the fly ash and the silica fume, the particle diameters of the fly ash and the silica fume are small, the particles are approximately round and smooth, and the fluidity and the water retention property of cement paste can be enhanced; the fly ash and the silica fume both contain active ingredients, can react with the cementing material to form a skeleton structure, and can fully fill the internal gaps of the cement paste due to small particles, so that the strength of the concrete is effectively improved; the anti-seepage and anti-freezing performance of the cement slurry is further improved due to the improvement of the compactness of the cement slurry.
Drawings
FIG. 1 is a drawing of a foam concrete processing plant.
Fig. 2 is a sectional view of the inner structure of the foamer.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following describes in detail a foam concrete formulation for back-filling and a processing apparatus thereof provided by the present invention with reference to the following examples. The following examples are intended to illustrate the invention only and are not intended to limit the scope of the invention.
Example 1:
the foam concrete backfilled on the platform back comprises the following components in parts by weight:
the foam concrete foaming agent comprises, by mass, 3 parts of sodium dodecyl benzene sulfonate, 6 parts of gelatin microcapsules, 0.3 part of polyacrylamide and 0.6 part of hydroxymethyl cellulose. Preferably, the particle size of the gelatin microcapsule is 100-200 μm, the wall material is gelatin, and the core material is one or more small-molecule inert gases such as nitrogen, hydrogen, helium and the like.
The mass ratio of the fly ash to the silica fume is 4: 1; the loss on ignition of the fly ash is 1-15%, and the content of particles with the particle size of more than 45 mu m is lower than 45%; the average particle size of the silica fume is 0.1 mu m, and the specific surface area is more than 15 square meters per gram.
The re-dispersible latex powder is preferably vinyl acetate and ethylene copolymer latex powder, the cement is 325 in the label, and other auxiliary agents comprise a water repellent, a water reducing agent, a plasticizer and the like.
The equipment for processing the foam concrete backfilled on the table back comprises a foaming system I, a mixing system II and a foam concrete discharging device 13.
Foaming system I includes foamer feed inlet 1, water inlet 2, static pipeline mixer 3, pump 4, foamer 5. The static pipeline mixer 3 is internally provided with a static impeller, and fluid can be fully mixed when passing through. The inner part of the foam maker 5 is provided with a throttling device, the opening angle of the pipe wall of the throttling front section (5-a) is 22 degrees, the opening angle of the pipe wall of the throttling rear section (5-c) is 7 degrees, and the maximum pipe diameter of the throttling front section (5-a) is equal to that of the throttling rear section (5-c).
The mixing system II comprises a cement feeder 6, a redispersible latex powder feeder 7, an auxiliary agent feeder 8, a silica fume feeder 9, a fly ash feeder 10, a silica fume and fly ash mixer 11 and a blender 12. The silica fume and fly ash mixer 11 is an air flow type mixer.
Example 2:
the foam concrete backfilled on the platform back comprises the following components in parts by weight:
the foam concrete foaming agent comprises 3 parts of sodium dodecyl benzene sulfonate, 6 parts of gelatin microcapsules, 0.3 part of polyacrylamide and 0.6 part of hydroxymethyl cellulose according to the mass part formula; the particle size of the gelatin microcapsule is 100-200 μm,
the wall material is gelatin, and the core material is one or more of micromolecular inert gases such as nitrogen, hydrogen, helium and the like.
The mass ratio of the fly ash to the silica fume is 4: 1; the loss on ignition of the fly ash is 1-15%, and the content of particles with the particle size of more than 45 mu m is lower than 45%; the average particle size of the silica fume is 0.1 mu m, and the specific surface area is more than 15 square meters per gram.
Cement designation 425; the preferable re-dispersible latex powder is vinyl acetate and ethylene copolymer latex powder; other auxiliary agents include water repellent, water reducing agent, plasticizer, etc.
The equipment for processing the foam concrete backfilled on the table back comprises a foaming system I, a mixing system II and a foam concrete discharging device 13.
Foaming system I includes foamer feed inlet 1, water inlet 2, static pipeline mixer 3, pump 4, foamer 5. The static pipeline mixer 3 is internally provided with a static impeller, and fluid can be fully mixed when passing through. The inner part of the foam maker 5 is provided with a throttling device, the opening angle of the pipe wall of the throttling front section (5-a) is 22 degrees, the opening angle of the pipe wall of the throttling rear section (5-c) is 7 degrees, and the maximum pipe diameter of the throttling front section (5-a) is equal to that of the throttling rear section (5-c).
The mixing system II comprises a cement feeder 6, a redispersible latex powder feeder 7, an auxiliary agent feeder 8, a silica fume feeder 9, a fly ash feeder 10, a silica fume and fly ash mixer 11 and a blender 12. The silica fume and fly ash mixer 11 is an air flow type mixer.
Example 3:
the foam concrete backfilled on the platform back comprises the following components in parts by weight:
the foam concrete foaming agent comprises 4 parts of sodium dodecyl benzene sulfonate, 5 parts of gelatin microcapsules, 0.3 part of polyacrylamide and 0.6 part of hydroxymethyl cellulose according to the mass part formula. The particle size of the gelatin microcapsule is 100-200 mu m, the wall material is gelatin, and the core material is one or more of micromolecular inert gases such as nitrogen, hydrogen, helium and the like.
The mass ratio of the fly ash to the silica fume is 4: 1; the loss on ignition of the fly ash is 1-15%, and the content of particles with the particle size of more than 45 mu m is lower than 45%; the average particle size of the silica fume is 0.1 mu m, and the specific surface area is more than 15 square meters per gram.
Cement designation 425; the preferable re-dispersible latex powder is vinyl acetate and ethylene copolymer latex powder; other auxiliary agents include water repellent, water reducing agent, plasticizer, etc.
The equipment for processing the foam concrete backfilled on the table back comprises a foaming system I, a mixing system II and a foam concrete discharging device 13.
Foaming system I includes foamer feed inlet 1, includes water inlet 2, static pipeline mixer 3, pump 4, foamer 5. The static pipeline mixer 3 is internally provided with a static impeller, and fluid can be fully mixed when passing through. The inner part of the foam maker 5 is provided with a throttling device, the opening angle of the pipe wall of the throttling front section (5-a) is 20 degrees, the opening angle of the pipe wall of the throttling rear section (5-c) is 7 degrees, and the maximum pipe diameter of the throttling front section (5-a) is equal to that of the throttling rear section (5-c).
The mixing system II comprises a cement feeder 6, a redispersible latex powder feeder 7, an auxiliary agent feeder 8, a silica fume feeder 9, a fly ash feeder 10, a silica fume and fly ash mixer 11 and a blender 12. The silica fume and fly ash mixer 11 is an air flow type mixer.
The structure for testing the performance of the novel concrete pavement material prepared in the embodiment 1-3 is as follows:
| structure of the product | Example 1 | Example 2 | Example 3 |
| Expansion ratio of foam | 24.5 | 25.4 | 25.6 |
| Bleeding volume/mL | 6.9 | 7.1 | 7.4 |
| Settling distance/mm | 18 | 19 | 19 |
| Density/(g.m) of foam concrete-3) | 758 | 722 | 696 |
| Foam concrete strength/MPa | 2.5 | 2.4 | 2.2 |
The present invention is not limited to the above-described examples, and various changes can be made without departing from the spirit and scope of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. A foam concrete formula for back filling of a platform is characterized by comprising the following components: 0.5-5 wt% of foaming agent, 20-40 wt% of cement, 20-60 wt% of fly ash and silica fume, 0.5-5 wt% of redispersible latex powder, 0.25-5 wt% of other additives and 15-30 wt% of water, wherein:
the foaming agent comprises, by mass, 2-4 parts of sodium dodecyl benzene sulfonate, 5-7 parts of gelatin microcapsules, 0.2-0.5 part of polyacrylamide and 0.5-0.8 part of hydroxymethyl cellulose;
the mass ratio of the fly ash to the silica fume is 4:1, the ignition loss of the fly ash is 1-15%, and the content of particles with the particle size of more than 45 mu m is lower than 45%; the average particle size of the silica fume is 0.1 mu m, and the specific surface area is more than 15 square meters per gram.
2. The foam concrete formulation for the back filling according to claim 1, wherein the foaming agent is prepared from gelatin microcapsules with a particle size of 100-200 μm, the wall material is gelatin, and the core material is at least one of nitrogen, hydrogen or helium.
3. The foamed concrete formulation for the bench back backfill of claim 1, wherein the redispersible latex powder is a vinyl acetate and ethylene copolymer latex powder.
4. The foamed concrete formulation for the backface filling of claim 1, wherein said other auxiliaries include water repellent, water reducing agent and plasticizer.
5. The foamed concrete formulation for the bench back backfill of claim 1, wherein the cement is designated 325 or 425.
6. A processing apparatus for the foam concrete for the back-filling of the platform, for processing the foam concrete for the back-filling of the platform as claimed in any one of claims 1 to 5, comprising: foaming system, hybrid system, foam concrete discharger, wherein:
the foaming system comprises a foaming agent feeding hole, a water inlet, a static pipeline mixer, a pump and a foaming device; a static impeller is arranged in the static pipeline mixer, and the materials are fully mixed when fluid passes through the static impeller; a throttling device is arranged in the foam maker, the opening angle of the pipe wall of the throttling front section is 17-23 degrees, the opening angle of the pipe wall of the throttling rear section is 4-8 degrees, and the maximum pipe diameter of the throttling front section is equal to that of the throttling rear section;
the mixing system comprises a cement feeder, a redispersible latex powder feeder, an auxiliary agent feeder, a silica fume feeder, a fly ash feeder, a silica fume and fly ash mixer and a blender.
7. The apparatus for processing foamed concrete for backface filling of claim 6, wherein said silica fume and fly ash mixer is an air flow mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910946774.6A CN110615641A (en) | 2019-10-07 | 2019-10-07 | Foam concrete formula for platform back backfilling and processing equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910946774.6A CN110615641A (en) | 2019-10-07 | 2019-10-07 | Foam concrete formula for platform back backfilling and processing equipment thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110615641A true CN110615641A (en) | 2019-12-27 |
Family
ID=68925209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910946774.6A Pending CN110615641A (en) | 2019-10-07 | 2019-10-07 | Foam concrete formula for platform back backfilling and processing equipment thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110615641A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060041A (en) * | 1991-10-24 | 1992-04-08 | 苏彦 | Bubble generator and uses thereof |
| CN102674743A (en) * | 2012-06-06 | 2012-09-19 | 江苏名和集团有限公司 | Fly ash concrete carbon adsorption inhibitor and application thereof |
| CN105000845A (en) * | 2015-06-29 | 2015-10-28 | 河南华泰建材开发有限公司 | Light foamed soil for abutment back backfilling and construction method |
| CN105016768A (en) * | 2015-06-29 | 2015-11-04 | 河南华泰建材开发有限公司 | Lightweight foam soil applied in subway station top board backfilling, and production method thereof |
| KR20150135620A (en) * | 2014-05-22 | 2015-12-03 | (주)엘지하우시스 | Foamed sheet and method for preparing foamed sheet |
| CN108298901A (en) * | 2018-01-29 | 2018-07-20 | 武汉市政工程设计研究院有限责任公司 | A kind of light water-permeable material and preparation method thereof for Bridge back wall backfill |
| KR101938823B1 (en) * | 2017-06-23 | 2019-01-15 | 한경대학교 산학협력단 | Composition of Light-weight concrete for incorporation of low temperature phase change material and Light-weight panel for using the same |
-
2019
- 2019-10-07 CN CN201910946774.6A patent/CN110615641A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060041A (en) * | 1991-10-24 | 1992-04-08 | 苏彦 | Bubble generator and uses thereof |
| CN102674743A (en) * | 2012-06-06 | 2012-09-19 | 江苏名和集团有限公司 | Fly ash concrete carbon adsorption inhibitor and application thereof |
| KR20150135620A (en) * | 2014-05-22 | 2015-12-03 | (주)엘지하우시스 | Foamed sheet and method for preparing foamed sheet |
| CN105000845A (en) * | 2015-06-29 | 2015-10-28 | 河南华泰建材开发有限公司 | Light foamed soil for abutment back backfilling and construction method |
| CN105016768A (en) * | 2015-06-29 | 2015-11-04 | 河南华泰建材开发有限公司 | Lightweight foam soil applied in subway station top board backfilling, and production method thereof |
| KR101938823B1 (en) * | 2017-06-23 | 2019-01-15 | 한경대학교 산학협력단 | Composition of Light-weight concrete for incorporation of low temperature phase change material and Light-weight panel for using the same |
| CN108298901A (en) * | 2018-01-29 | 2018-07-20 | 武汉市政工程设计研究院有限责任公司 | A kind of light water-permeable material and preparation method thereof for Bridge back wall backfill |
Non-Patent Citations (2)
| Title |
|---|
| 叶建雄: "《建筑材料基础实验》", 30 November 2016, 中国建材工业出版社 * |
| 宁平 等: "《大宗工业固体废物综合利用-矿浆脱硫》", 31 January 2018, 冶金工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101134346B (en) | Method of producing pump-transporting light aggregate concrete | |
| CN100475742C (en) | Concrete composition | |
| US6046255A (en) | Foam and foam/cement mixture | |
| CN104263332A (en) | High-temperature-resistant high-strength low-density well-cementing cement slurry | |
| CN111170700A (en) | Uniform non-bleeding micro-expansion shield synchronous grouting material and preparation method thereof | |
| CN108546016A (en) | A kind of balloon type geopolymer of road grouting and reinforcing | |
| KR101415890B1 (en) | Manufacturing equipment and method of manufacturing for highly efficient concrete that have been undergoing process of mixing and dissipating air on common concrete | |
| CN110563413A (en) | Low-grade machine-made sand concrete for downward pumping track and preparation method thereof | |
| CN110342888A (en) | A kind of high ductility thermal insulation mortar | |
| CN106946523B (en) | Fill concrete after a kind of foundation for laid pipe | |
| JP2013035701A (en) | Foam mortar kneaded product and infilling method | |
| CN111621284A (en) | Water-control scale-inhibition coated proppant and preparation method thereof | |
| JP3638578B2 (en) | Frozen ground injection material and manufacturing / injection method thereof | |
| CN110615641A (en) | Foam concrete formula for platform back backfilling and processing equipment thereof | |
| CN113122209B (en) | High-temperature-resistant deep profile control water shutoff agent and preparation and application method thereof | |
| CN112456859B (en) | Water reducing agent composition for coal mine paste filling and preparation method and application thereof | |
| CN109020361A (en) | A kind of high flow rate big flow blocking in flowing water fiber injecting paste material and preparation method thereof | |
| CN107555868A (en) | Mortar is filled after a kind of foundation for laid pipe | |
| JPS62275049A (en) | Heavy grout mortar and filling construction therewith | |
| CN115010514B (en) | Inorganic light foam concrete with high impermeability and low thermal conductivity and preparation method thereof | |
| CN110642641A (en) | Method for improving stability of foam concrete precast foam | |
| CN105601838A (en) | Water reducing agent prepared from unsaturated ester and cationic unsaturated monomer and preparation method thereof | |
| JP6752443B2 (en) | Powder drying shrinkage reducing agent for premixed mortar, premixed mortar and hardened cement | |
| JP3706670B2 (en) | Foam mortar composition | |
| CN101514091B (en) | Bubble lightweight concrete bicomponent mortar |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191227 |