CN113061010A - High-strength fiber salt corrosion resistant cement concrete - Google Patents
High-strength fiber salt corrosion resistant cement concrete Download PDFInfo
- Publication number
- CN113061010A CN113061010A CN202110317435.9A CN202110317435A CN113061010A CN 113061010 A CN113061010 A CN 113061010A CN 202110317435 A CN202110317435 A CN 202110317435A CN 113061010 A CN113061010 A CN 113061010A
- Authority
- CN
- China
- Prior art keywords
- parts
- powder
- cement concrete
- reducing agent
- water reducing
- 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
- C04B28/14—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 calcium sulfate 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
- C04B2111/20—Resistance against chemical, physical or biological attack
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a high-strength fiber salt corrosion resistant cement concrete which comprises the following components in parts by weight: 10-25 parts of high-purity graphite, 15-35 parts of hydromica powder, 20-30 parts of gypsum powder, 2-6 parts of sulfate, 5-10 parts of water reducing agent, 25-40 parts of silicon powder, 15-35 parts of black mica powder, 2-5 parts of kaolinite powder, 10-20 parts of fly ash, 2-4 parts of early strength agent and 6-8 parts of hydrogen peroxide, wherein the ash powder material and the coating are mixed and stirred in batches, the water reducing agent and the hydrogen peroxide in a quantitative ratio are added, the sulfate is added, after the mixing is finished, the two parts of materials are intensively mixed, and finally the high-strength fiber salt corrosion resistant cement concrete is sealed and stored, can well adapt to the climate of the surrounding environment, can sustainably release negative oxygen ions, decompose harmful substances of surrounding benzene and radon gas, and avoid the expansion of the materials, the air content in the material is overlarge, so that the strength and the salt corrosion resistance effect of the material are ensured.
Description
Technical Field
The invention relates to the technical field of concrete materials, in particular to a high-strength fiber salt corrosion resistant cement concrete.
Background
The high-strength concrete is widely applied to high-rise building structures, large-span bridge structures and certain special structures due to the advantages of high compressive strength, strong deformation resistance, large density and low porosity of the high-strength concrete as a new building material, and the high-strength concrete has the greatest characteristic of high compressive strength which is generally 6 times that of common-strength concrete, so that the cross section of a member can be reduced, and is most suitable for high-rise buildings. And the size of the cross section of the column is reduced, the dead weight is reduced, the short column is avoided, the earthquake resistance of the structure is facilitated, and the economic benefit is improved.
However, the existing cement concrete is not environment-friendly enough in the preparation process, when the proportion of the catalytic material is unbalanced, the material is easy to expand, the air content in the material is too large, the overall performance of the cement concrete is influenced, the cement concrete cannot reach the specified standard and cannot be recycled, the salt corrosion resistance is poor, and buildings in processing plants or coastal areas are easy to be subjected to salt corrosion, so that molecules in the cement concrete are damaged, and the overall strength of the concrete is influenced.
Disclosure of Invention
The invention aims to provide a high-strength fiber salt corrosion-resistant cement concrete, which aims to solve the problems that the existing cement concrete is not environment-friendly enough in the preparation process, when the proportion of a catalytic material is unbalanced, the material is easy to expand, the air content in the material is too large, the overall performance of the cement concrete is influenced, the material cannot reach the specified standard and cannot be recycled, the salt corrosion resistance is poor, and the molecules in the cement concrete are damaged due to the fact that the building in a processing plant or a coastal area is easy to be subjected to salt corrosion, so that the overall strength of the concrete is influenced.
In order to achieve the purpose, the invention provides the following technical scheme: an environment-friendly ultrahigh swing-resistant high polymer material comprises the following components in parts by weight: 10-25 parts of high-purity graphite, 15-35 parts of hydromica powder, 20-30 parts of gypsum powder, 2-6 parts of sulfate, 5-10 parts of water reducing agent, 25-40 parts of silicon powder, 15-35 parts of black mica powder, 2-5 parts of kaolinite powder, 10-20 parts of fly ash, 2-4 parts of early strength agent and 6-8 parts of hydrogen peroxide.
Preferably, the high-strength fiber salt corrosion-resistant cement concrete comprises the following components in parts by weight: 20 parts of high-purity graphite, 25 parts of hydromica powder, 20 parts of gypsum powder, 5 parts of sulfate, 8 parts of water reducing agent, 30 parts of silica powder, 20 parts of biotite powder, 4 parts of kaolinite powder, 20 parts of fly ash, 4 parts of early strength agent and 8 parts of hydrogen peroxide.
Preferably, the high-strength fiber salt corrosion-resistant cement concrete comprises the following components in parts by weight: 15 parts of high-purity graphite, 20 parts of hydromica powder, 25 parts of gypsum powder, 4 parts of sulfate, 6 parts of a water reducing agent, 25 parts of silica powder, 25 parts of black mica powder, 3 parts of kaolinite powder, 10 parts of fly ash, 3 parts of an early strength agent and 7 parts of hydrogen peroxide.
Preferably, the high-strength fiber salt corrosion-resistant cement concrete comprises the following components in parts by weight: 10 parts of high-purity graphite, 15 parts of hydromica powder, 20 parts of gypsum powder, 2 parts of sulfate, 5 parts of a water reducing agent, 35 parts of silica powder, 15 parts of biotite powder, 2 parts of kaolinite powder, 15 parts of fly ash, 2 parts of an early strength agent and 6 parts of hydrogen peroxide.
Preferably, the water reducing agent is set as a polycarboxylic acid high-performance water reducing agent.
Preferably, the hydrogen peroxide is an inorganic hydrogen peroxide compound.
A preparation method of an environment-friendly ultrahigh swing-resistant high polymer material comprises the following specific steps:
s1, washing gas with aqueous solution of hydrogen peroxide, oxidizing SO2 into sulfuric acid, adding a little ferric ion into excessive hydrogen peroxide to promote complete decomposition of the hydrogen peroxide, and then obtaining relatively pure sulfuric acid solution;
s2, grinding high-purity graphite into fine powder according to a proper proportion, burning the fine powder to a part, and melting the obtained calcium silicate to obtain a hydraulic cementing substance with the main mineral component of calcium silicate mineral not less than 66%, wherein the mass ratio of calcium oxide to silicon oxide is not less than 2;
s3, neutralizing the sulfite waste liquid with an alkaline solution, removing saccharides through biological fermentation, evaporating and drying to obtain a powdery water reducing agent, and filling the formed water reducing agent into silicon powder in an internal mixing mode;
s4, mixing the pre-reacted water reducer and silicon powder with gypsum powder and fly ash, placing high-purity graphite, sulfate, gypsum powder, silicon powder and fly ash in a high-efficiency stirrer for stirring, and adding an early strength agent for catalytic reaction;
s5, mixing the water mica powder, the black mica powder and the kaolinite powder into the other high-speed stirrer, adding clean water in equal proportion, adding the early strength agent, and adding the clean water in equal proportion for mixing after absorption is finished;
s6, collecting the material products in a stirrer by a screw extruder, adding a water reducing agent and an early strength agent for catalysis, and storing at a constant temperature.
Preferably, the setting time difference of the early strength water reducing agent is plus or minus 90min, the stirring of the water reducing agent and the early strength agent is prolonged by 5min, and the water reducing agent, the early strength agent and the cement are subjected to temperature insulation storage at 70-100 ℃ after the stirring is finished.
Preferably, the high-speed stirrer needs to be preheated to 100-120 ℃ before working, the mixing time of the gypsum powder, the silicon powder and the fly ash is maintained at 30min, the mixing time of the hydromica powder, the biotite powder and the kaolinite powder is maintained at 50-60min, and the mixed material is cooled to 70 ℃ for storage and addition of other raw materials.
Preferably, the preparation of the cement concrete material after mixing is divided into four stages, and the four stages are respectively pouring, rolling, vibrating and curing.
Compared with the prior art, the invention has the beneficial effects that: the high-strength fiber salt corrosion resistant cement concrete comprises the following components in parts by weight: the materials are mixed and reacted respectively in two parts, one part is the building material of main high-strength fibers, the other part is the coating, and a certain amount of water reducing agent and early strength agent are added, so that the cement hydration speed can be accelerated, the two parts of materials are mixed and stirred again under the condition of keeping the same slump and the same cement using amount as the reference concrete, the two parts of materials are combined into the high-strength and salt corrosion resistant cement concrete, the molecular purity in the materials is higher, the particle size is smaller, the thickness is in the nanoscale range, but the radial width can reach several to dozens of micrometers, the super-large shape ratio is realized, the original planar carbon six-membered ring conjugated crystal structure of the concrete is kept, the plasticity and the adhesion are realized during wetting, the volume expansion is avoided during drying, the material can well adapt to the climate of the surrounding environment, and the negative oxygen ions can be continuously released, and decompose the harmful substance of benzene and radon gas around, avoid the material to produce the swelling, lead to the air content in the material too big, influence the integral performance of the cement concrete, and prepare stage by stage with pouring, roll-in, vibration and maintenance, seal up the material to resist the temperature in the preparation process, can extract according to the building required amount, guarantee the continuous supply of the building material, thus has guaranteed the intensity of the material and resist the salt and corrode the effect.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.
The invention provides a technical scheme that: the composite material comprises the following components in parts by weight: 10-25 parts of high-purity graphite, 15-35 parts of hydromica powder, 20-30 parts of gypsum powder, 2-6 parts of sulfate, 5-10 parts of water reducing agent, 25-40 parts of silicon powder, 15-35 parts of black mica powder, 2-5 parts of kaolinite powder, 10-20 parts of fly ash, 2-4 parts of early strength agent and 6-8 parts of hydrogen peroxide.
Example 1
The high-strength fiber salt corrosion resistant cement concrete comprises the following components in parts by weight: 20 parts of high-purity graphite, 25 parts of hydromica powder, 20 parts of gypsum powder, 5 parts of sulfate, 8 parts of water reducing agent, 30 parts of silica powder, 20 parts of biotite powder, 4 parts of kaolinite powder, 20 parts of fly ash, 4 parts of early strength agent and 8 parts of hydrogen peroxide.
Example 2
The high-strength fiber salt corrosion resistant cement concrete comprises the following components in parts by weight: 15 parts of high-purity graphite, 20 parts of hydromica powder, 25 parts of gypsum powder, 4 parts of sulfate, 6 parts of a water reducing agent, 25 parts of silica powder, 25 parts of black mica powder, 3 parts of kaolinite powder, 10 parts of fly ash, 3 parts of an early strength agent and 7 parts of hydrogen peroxide.
Example 3
The high-strength fiber salt corrosion resistant cement concrete comprises the following components in parts by weight: 10 parts of high-purity graphite, 15 parts of hydromica powder, 20 parts of gypsum powder, 2 parts of sulfate, 5 parts of a water reducing agent, 35 parts of silica powder, 15 parts of biotite powder, 2 parts of kaolinite powder, 15 parts of fly ash, 2 parts of an early strength agent and 6 parts of hydrogen peroxide.
The technical scheme provides a preparation method of a high-strength fiber salt corrosion-resistant cement concrete material, which comprises the following steps:
the method comprises the following specific steps:
s1, washing gas with aqueous solution of hydrogen peroxide, oxidizing SO2 into sulfuric acid, adding a little ferric ion into excessive hydrogen peroxide to promote complete decomposition of the hydrogen peroxide, and then obtaining relatively pure sulfuric acid solution;
s2, grinding high-purity graphite into fine powder according to a proper proportion, burning the fine powder to a part, and melting the obtained calcium silicate to obtain a hydraulic cementing substance with the main mineral component of calcium silicate mineral not less than 66%, wherein the mass ratio of calcium oxide to silicon oxide is not less than 2;
s3, neutralizing the sulfite waste liquid with an alkaline solution, removing saccharides through biological fermentation, evaporating and drying to obtain a powdery water reducing agent, and filling the formed water reducing agent into silicon powder in an internal mixing mode;
s4, mixing the pre-reacted water reducer and silicon powder with gypsum powder and fly ash, placing the high-purity graphite, sulfate, gypsum powder, silicon powder and fly ash materials in a high-efficiency stirrer for stirring, and adding an early strength agent for catalytic reaction;
s5, mixing the water mica powder, the black mica powder and the kaolinite powder into the other high-speed stirrer, adding clean water in equal proportion, adding the early strength agent, and adding the clean water in equal proportion for mixing after absorption is finished;
s6, collecting the material products in a stirrer by a screw extruder, adding a water reducing agent and an early strength agent for catalysis, and storing at a constant temperature.
The difference of the setting time of the early strength water reducing agent is plus or minus 90min, the stirring of the water reducing agent and the early strength agent is prolonged by 5min, and the water reducing agent, the early strength agent and the cement are subjected to heat insulation storage at 70-100 ℃ after the stirring is finished.
The high-speed stirrer needs to be preheated to 100-120 ℃ before working, the mixing time of the gypsum powder, the silicon powder and the fly ash is maintained at 30min, the mixing time of the hydromica powder, the biotite powder and the kaolin powder is maintained at 50-60min, and the mixed material is cooled to 70 ℃ for storage and addition of other raw materials.
The preparation of the cement concrete material after mixing is divided into four stages, and the four stages are respectively pouring, rolling, vibrating and curing.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The high-strength fiber salt corrosion-resistant cement concrete is characterized by comprising the following materials in parts by weight: 10-25 parts of high-purity graphite, 15-35 parts of hydromica powder, 20-30 parts of gypsum powder, 2-6 parts of sulfate, 5-10 parts of water reducing agent, 25-40 parts of silicon powder, 15-35 parts of black mica powder, 2-5 parts of kaolinite powder, 10-20 parts of fly ash, 2-4 parts of early strength agent and 6-8 parts of hydrogen peroxide.
2. The high-strength fiber salt corrosion-resistant cement concrete as claimed in claim 1, characterized by comprising the following components in parts by weight: 20 parts of high-purity graphite, 25 parts of hydromica powder, 20 parts of gypsum powder, 5 parts of sulfate, 8 parts of water reducing agent, 30 parts of silica powder, 20 parts of biotite powder, 4 parts of kaolinite powder, 20 parts of fly ash, 4 parts of early strength agent and 8 parts of hydrogen peroxide.
3. The high-strength fiber salt corrosion-resistant cement concrete as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 15 parts of high-purity graphite, 20 parts of hydromica powder, 25 parts of gypsum powder, 4 parts of sulfate, 6 parts of a water reducing agent, 25 parts of silica powder, 25 parts of black mica powder, 3 parts of kaolinite powder, 10 parts of fly ash, 3 parts of an early strength agent and 7 parts of hydrogen peroxide.
4. The high-strength fiber salt corrosion-resistant cement concrete as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 10 parts of high-purity graphite, 15 parts of hydromica powder, 20 parts of gypsum powder, 2 parts of sulfate, 5 parts of a water reducing agent, 35 parts of silica powder, 15 parts of biotite powder, 2 parts of kaolinite powder, 15 parts of fly ash, 2 parts of an early strength agent and 6 parts of hydrogen peroxide.
5. The high-strength fiber salt corrosion-resistant cement concrete as claimed in claim 1, wherein: the water reducing agent is a polycarboxylic acid high-performance water reducing agent.
6. The high-strength fiber salt corrosion-resistant cement concrete as claimed in claim 1, wherein: the hydrogen peroxide is an inorganic compound of hydrogen peroxide.
7. The method for preparing the high-strength fiber salt corrosion-resistant cement concrete according to any one of claims 1 to 6, which is characterized by comprising the following specific steps:
s1, washing gas with aqueous solution of hydrogen peroxide, oxidizing SO2 into sulfuric acid, adding a little ferric ion into excessive hydrogen peroxide to promote complete decomposition of the hydrogen peroxide, and then obtaining relatively pure sulfuric acid solution;
s2, grinding high-purity graphite into fine powder according to a proper proportion, burning the fine powder to a part, and melting the obtained calcium silicate to obtain a hydraulic cementing substance with the main mineral component of calcium silicate mineral not less than 66%, wherein the mass ratio of calcium oxide to silicon oxide is not less than 2;
s3, neutralizing the sulfite waste liquid with an alkaline solution, removing saccharides through biological fermentation, evaporating and drying to obtain a powdery water reducing agent, and filling the formed water reducing agent into silicon powder in an internal mixing mode;
s4, mixing the pre-reacted water reducer and silicon powder with gypsum powder and fly ash, placing high-purity graphite, sulfate, gypsum powder, silicon powder and fly ash into a high-efficiency stirrer for stirring, and adding an early strength agent for catalytic reaction;
s5, mixing the water mica powder, the black mica powder and the kaolinite powder into the other high-speed stirrer, adding clean water in equal proportion, adding the early strength agent, and adding the clean water in equal proportion for mixing after absorption is finished;
s6, collecting the material products in a stirrer by a screw extruder, adding a water reducing agent and an early strength agent for catalysis, and storing at a constant temperature.
8. The method for preparing the high-strength fiber salt corrosion-resistant cement concrete according to any one of claim 7, wherein the setting time difference of the early strength water reducing agent is plus or minus 90min, the stirring of the water reducing agent and the early strength agent is prolonged by 5min, and after the stirring of the water reducing agent, the early strength agent and the cement is completed, the high-strength fiber salt corrosion-resistant cement concrete is stored at an insulated temperature of between 70 and 100 ℃.
9. The method for preparing high-strength fiber salt corrosion-resistant cement concrete according to any one of claim 7, wherein the high-speed mixer is preheated to 100-120 ℃ before working, the mixing time of the gypsum powder, the silica powder and the fly ash is maintained at 30min, the mixing time of the hydromica powder, the biotite powder and the kaolinite powder is maintained at 50-60min, and the mixed material is cooled to 70 ℃ for storage and other raw materials are added.
10. The method for preparing high-strength fiber salt corrosion-resistant cement concrete according to any one of claim 7, wherein the cement concrete material is prepared in four stages after mixing, and the four stages are casting, rolling, vibrating and curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317435.9A CN113061010A (en) | 2021-03-25 | 2021-03-25 | High-strength fiber salt corrosion resistant cement concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317435.9A CN113061010A (en) | 2021-03-25 | 2021-03-25 | High-strength fiber salt corrosion resistant cement concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113061010A true CN113061010A (en) | 2021-07-02 |
Family
ID=76561984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110317435.9A Pending CN113061010A (en) | 2021-03-25 | 2021-03-25 | High-strength fiber salt corrosion resistant cement concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113061010A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA953316A (en) * | 1970-12-01 | 1974-08-20 | Southwest Research Institute | Early strength portland cement/concrete |
| CN103318878A (en) * | 2013-06-27 | 2013-09-25 | 江南石墨烯研究院 | Preparation method and application of large size and shape ratio graphene microsheet |
| CN106800391A (en) * | 2017-01-22 | 2017-06-06 | 万玉君 | A kind of cement-base composite material for powder bonding 3D printing and the powder using the material bind 3D printing method |
| CN111170758A (en) * | 2018-11-09 | 2020-05-19 | 河南华泰新材科技股份有限公司 | Foam concrete, preparation method and application thereof |
| CN112125563A (en) * | 2020-09-24 | 2020-12-25 | 张百顺 | Production method of concrete water reducing agent |
-
2021
- 2021-03-25 CN CN202110317435.9A patent/CN113061010A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA953316A (en) * | 1970-12-01 | 1974-08-20 | Southwest Research Institute | Early strength portland cement/concrete |
| CN103318878A (en) * | 2013-06-27 | 2013-09-25 | 江南石墨烯研究院 | Preparation method and application of large size and shape ratio graphene microsheet |
| CN106800391A (en) * | 2017-01-22 | 2017-06-06 | 万玉君 | A kind of cement-base composite material for powder bonding 3D printing and the powder using the material bind 3D printing method |
| CN111170758A (en) * | 2018-11-09 | 2020-05-19 | 河南华泰新材科技股份有限公司 | Foam concrete, preparation method and application thereof |
| CN112125563A (en) * | 2020-09-24 | 2020-12-25 | 张百顺 | Production method of concrete water reducing agent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022262319A1 (en) | Fly ash-based foam geopolymer, preparation method therefor, and use thereof | |
| CN101581131B (en) | Non-autoclaved aerated concrete building block and manufacturing method | |
| CN102584156B (en) | Fluorgypsum based inorganic thermal mortar | |
| CN112266264B (en) | Aerated concrete based on synergistic effect of alkali excitation and accelerated carbonization and preparation method thereof | |
| CN108911607B (en) | Assembled wall material and preparation method thereof | |
| CN105174890A (en) | Composite light partition board and manufacturing method thereof | |
| CN105016636B (en) | A kind of gypsum slag cement insulation board and its preparation technology | |
| CN108059399A (en) | A kind of upper flow regime lightweight insulating concrete and its compounding method | |
| CN105036677A (en) | Autoclaved aerated concrete block or plate and preparation method thereof | |
| CN109796169A (en) | A kind of preparation method of composite strengthening carbonization prefabrication | |
| CN108129160A (en) | A kind of light heat-insulation wall material and preparation method thereof | |
| CN112573884A (en) | High-toughness alkali slag granite powder aerated concrete block and preparation method thereof | |
| CN104556909A (en) | Fast-setting anti-corrosion cement using coal ash as raw material and preparation method thereof | |
| CN100564306C (en) | Iron ore gangue sand and production method thereof | |
| CN113831049A (en) | Slag activity excitant, production method and production equipment thereof | |
| CN111995317A (en) | High-strength crack-resistant low-heat-conductivity ceramsite concrete and preparation method thereof | |
| CN108658560A (en) | A kind of foaming desulfurated plaster thermal insulation board based on foam glass waste material | |
| CN102167536B (en) | Secondary ettringite type expanding agent and preparation method and application thereof | |
| CN115353361A (en) | Composite cementing material and preparation method and application thereof | |
| CN104030649A (en) | Production process for high-strength high-volume phosphogypsum baking-free brick | |
| CN113387622A (en) | High-strength recycled concrete and production process thereof | |
| CN105731963A (en) | Fluorogypsum-base external wall thermal-insulation material and manufacturing method thereof | |
| CN110937833B (en) | Ardealite baking-free modification treatment method | |
| CN113061010A (en) | High-strength fiber salt corrosion resistant cement concrete | |
| CN116606115A (en) | Autoclaved aerated concrete block and preparation method thereof |
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 |
Application publication date: 20210702 |
|
| RJ01 | Rejection of invention patent application after publication |