CN111592283A - Commercial concrete and preparation process thereof - Google Patents
Commercial concrete and preparation process thereof Download PDFInfo
- Publication number
- CN111592283A CN111592283A CN202010319658.4A CN202010319658A CN111592283A CN 111592283 A CN111592283 A CN 111592283A CN 202010319658 A CN202010319658 A CN 202010319658A CN 111592283 A CN111592283 A CN 111592283A
- Authority
- CN
- China
- Prior art keywords
- parts
- powder
- commercial concrete
- shell powder
- concrete
- 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
- 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
- C04B2111/2092—Resistance against biological degradation
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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 commercial concrete and a preparation process thereof, belongs to the field of building materials, is used for building construction, solves the problem that the existing concrete has cracks, and comprises the following components in percentage by weight: 300 parts of cement, 891 parts of mixed sand, 1005 parts of stones, 46 parts of mineral powder, 67 parts of fly ash and 7.6 parts of an additive, wherein the additive comprises a polycarboxylic acid high-performance water reducing agent, polymethacrylic acid, polyethylene glycol, hair powder and modified shell powder. The polymethacrylic acid enables the concrete to rapidly increase the strength under the low-temperature condition to obtain good strength, the polyethylene glycol is a thickening agent, the hair powder can increase the adhesiveness of the concrete and increase the toughness of the concrete, the shell powder takes natural shells as raw materials and has natural and environment-friendly natural characteristics, the main component is calcium carbonate which plays a role of reinforcing ribs, and the prepared commercial concrete has good crack resistance by reasonably matching the aggregate, the powder, the polymethacrylic acid, the polyethylene glycol, the hair powder and the modified shell powder.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to commercial concrete and a preparation process thereof.
Background
Commercial concrete refers to concrete that is used for commercial purposes, such as being sold or purchased. Commercial concrete is mostly used in the existing building construction.
Aggregate is cemented into a whole by cementing materials. The term concrete generally refers to cement as the cementing material and sand and stone as the aggregate; the cement concrete, also called as common concrete, is obtained by mixing with water (with or without additive and admixture) according to a certain proportion, stirring, forming and curing, and is widely applied to civil engineering.
The book "countering the concrete science and technology" is pointed out: the concrete material develops to present, the contradiction between fluidity and compactness occurs, the problem of early and later cracks occurs, and the problem of durability occurs. "the problem of cracking has always plagued engineers as an important issue in the durability of concrete during the construction and use of many concrete structures. Particularly, with the recent widespread use and structural form of commercial concrete, the size and complexity of the commercial concrete have been increased, and this problem has been highlighted. The concrete is changed from dry hardness and low fluidity to high fluidity, so that the uniformity and quality of the concrete are improved, the cement consumption is increased, the particle size of aggregate is reduced, hydration heat is increased and concrete shrinkage is increased, and the possibility of occurrence of concrete cracks is greatly increased.
Disclosure of Invention
The invention aims to: provides commercial concrete and a preparation process thereof, and aims to solve the problem that the existing concrete has cracks.
The technical scheme adopted by the invention is as follows:
the commercial concrete comprises the following components in percentage by weight: 500 parts of cement, 1000 parts of mixed sand, 550 parts of stone, 1050 parts of stone, 45-100 parts of mineral powder, 65-95 parts of fly ash, 6.5-17.5 parts of an additive, 45-100 parts of mineral powder and 65-95 parts of fly ash, wherein the additive comprises a polycarboxylic acid high-performance water reducing agent, polymethacrylic acid, polyethylene glycol, hair powder and modified shell powder.
In the technical scheme of the application: the stone and the mixed sand are aggregates, the cement, the mineral powder and the fly ash are powder materials, the polymethacrylic acid in the additive enables the concrete to rapidly increase the strength under the low-temperature condition to obtain good strength, the polyethylene glycol is a thickening agent, the hair powder can increase the adhesion of the concrete and increase the toughness of the concrete, the shell powder takes natural shells as raw materials and has natural and environment-friendly natural characteristics, the main component is calcium carbonate which plays the role of reinforcing ribs, in addition, the shell powder can absorb moisture and resist mildew, the modified shell powder can release trace elements such as copper, silver and the like which are naturally contained in the modified shell powder, the copper can generate a sulfhydryl reaction with respiring enzymes in bacteria to enable the respiring enzymes to lose functions, so that the bacteria die, and the silver ions can directly inhibit the growth and the propagation of microorganisms, thereby forming the bacteriosta. By reasonably matching the aggregate, the powder, the polymethacrylic acid, the polyethylene glycol, the hair powder and the modified shell powder, the prepared commercial concrete has good crack resistance, and also has antibacterial and bactericidal effects.
Preferably, the commercial concrete comprises the following components in percentage by weight: 300 parts of cement, 891 parts of mixed sand, 1005 parts of stones, 46 parts of mineral powder, 67 parts of fly ash and 7.6 parts of an additive, wherein the additive comprises a polycarboxylic acid high-performance water reducing agent, polymethacrylic acid, polyethylene glycol, hair powder and modified shell powder.
Preferably, the admixture further comprises rice hull ash and white sugar, wherein the polycarboxylic acid high-performance water reducing agent, polymethacrylic acid, polyethylene glycol, hair powder, modified shell powder, the rice hull ash and the white sugar are in a mass ratio of 4-10: 2-6: 3-6: 1-3: 2-4: 2-12: 0.01-0.05.
More preferably, the admixture further comprises rice hull ash and white sugar, wherein the polycarboxylic acid high-performance water reducing agent, polymethacrylic acid, polyethylene glycol, hair powder, modified shell powder, the rice hull ash and the white sugar are in a mass ratio of 7: 4: 4: 2: 3: 7: 0.03.
preferably, the water-to-cement ratio is 0.25-0.65.
More preferably, the water to cement ratio is 0.43.
Preferably, the sand rate is 35-49.
More preferably, the sand rate is 41.
Preferably, the particle size of the modified shell powder is 80-100 meshes.
More preferably, the particle size of the modified shell powder is 90 meshes.
A commercial concrete preparation process comprises the following steps:
(1) soaking the shell powder in tap water for 4-10h, continuously stirring and cleaning sludge on the surface of the shell powder;
(2) naturally airing or drying the shell powder obtained after cleaning;
(3) carrying out coarse powder, then carrying out superfine grinding and sieving to obtain modified shell powder;
(4) according to the weight parts, the stones and the mixed sand are conveyed into a stirrer, the cement, the mineral powder and the fly ash are respectively conveyed into the stirrer through a conveying pipeline under negative pressure, the additive and the water are respectively conveyed into the stirrer through an additive pipe and a water pipe, and the commercial concrete mixture is formed after uniform stirring and mixing.
In the technical scheme of the application, the formula also comprises a proper amount of water.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the polymethacrylic acid can rapidly increase the strength of the concrete at low temperature to obtain good strength, the polyethylene glycol is a thickening agent, the hair powder can increase the adhesiveness of the concrete and increase the toughness of the concrete, the shell powder takes natural shells as raw materials and has natural and environment-friendly natural characteristics, the main component is calcium carbonate, and the shell powder plays a role of a reinforcing rib;
2. by reasonably matching the aggregate, the powder, the polymethacrylic acid, the polyethylene glycol, the hair powder and the modified shell powder, the prepared commercial concrete has good crack resistance, and also has antibacterial and bactericidal effects;
3. the main component of the rice hull ash is silicon dioxide which is active silicon and can react with calcium hydroxide to generate viscous sodium silicate, and further has the effect of strengthening the tendons, so that the prepared concrete has good toughness and no crack;
4. the technical scheme of this application has added a minute amount of white sugar, plays slow setting and water reducing effect, can also play the effect of practicing thrift the cement quantity and increasing the concrete intensity in addition.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments further describe the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The commercial concrete comprises the following components in percentage by weight: the cement mortar comprises, by mass, 500 parts of cement, 947 parts of mixed sand, 986 parts of stones, 63 parts of mineral powder, 79 parts of fly ash, 6.5 parts of an additive, 63 parts of mineral powder and 79 parts of fly ash, wherein the additive comprises a polycarboxylic acid high-performance water reducing agent, polymethacrylic acid, polyethylene glycol, hair powder, modified shell powder, rice hull ash and white sugar, and the mass ratio of the polycarboxylic acid high-performance water reducing agent, the polymethacrylic acid, the polyethylene glycol, the hair powder, the modified shell powder, the rice hull ash and the white sugar is 4: 2: 3: 1: 2: 2: 0.01.
water-cement ratio 0.65, sand ratio 49.
A commercial concrete preparation process comprises the following steps:
(1) soaking the shell powder in tap water for 4-10h, continuously stirring and cleaning sludge on the surface of the shell powder;
(2) naturally airing or drying the shell powder obtained after cleaning;
(3) carrying out coarse powder, then carrying out superfine grinding and sieving to obtain modified shell powder;
according to the weight parts, the stones and the mixed sand are conveyed into a stirrer, the cement, the mineral powder and the fly ash are respectively conveyed into the stirrer through a conveying pipeline under negative pressure, the additive and the water are respectively conveyed into the stirrer through an additive pipe and a water pipe, and the commercial concrete mixture is formed after uniform stirring and mixing.
Example 2
The commercial concrete comprises the following components in percentage by weight: 233 parts of cement, 836 parts of mixed sand, 1022 parts of stones, 45 parts of mineral powder, 69 parts of fly ash, 8.7 parts of an additive, 45 parts of mineral powder and 69 parts of fly ash, wherein the additive comprises a polycarboxylic acid high-performance water reducing agent, polymethacrylic acid, polyethylene glycol, hair powder, modified shell powder, rice hull ash and white sugar, and the mass ratio of the polycarboxylic acid high-performance water reducing agent, the polymethacrylic acid, the polyethylene glycol, the hair powder, the modified shell powder, the rice hull ash and the white sugar is 7: 4: 4: 2: 3: 7: 0.03.
water-cement ratio 0.49, sand ratio 45.
The preparation process was as described in example 1.
Example 3
The commercial concrete comprises the following components in percentage by weight: 295 parts of cement, 731 parts of mixed sand, 1046 parts of stones, 67 parts of mineral powder, 85 parts of fly ash, 11.6 parts of additives, 67 parts of mineral powder and 85 parts of fly ash, wherein the additives comprise a polycarboxylic acid high-performance water reducing agent, polymethacrylic acid, polyethylene glycol, hair powder, modified shell powder, rice hull ash and white sugar, and the mass ratio of the polycarboxylic acid high-performance water reducing agent, the polymethacrylic acid, the polyethylene glycol, the hair powder, the modified shell powder, the rice hull ash and the white sugar is 10: 6: 6: 3: 4: 12: 0.05.
water-cement ratio 0.38, sand ratio 41.
The preparation process was as described in example 1.
Example 4
The commercial concrete comprises the following components in percentage by weight: 473 parts of cement, 567 parts of mixed sand, 1053 parts of stones, 97 parts of mineral powder, 78 parts of fly ash, 17.5 parts of an additive, 97 parts of mineral powder and 78 parts of fly ash, wherein the additive comprises a polycarboxylic acid high-performance water reducing agent, polymethacrylic acid, polyethylene glycol, hair powder, modified shell powder, rice hull ash and white sugar, and the mass ratio of the polycarboxylic acid high-performance water reducing agent, the polymethacrylic acid, the polyethylene glycol, the hair powder, the modified shell powder, the rice hull ash and the white sugar is 4: 2: 3: 1: 2: 2: 0.01.
water-cement ratio 0.25, sand ratio 35.
The preparation process was as described in example 1.
Example 5
The commercial concrete comprises the following components in percentage by weight: 383 parts of cement, 666 parts of mixed sand, 1042 parts of stones, 86 parts of mineral powder, 70 parts of fly ash, 14.6 parts of an additive, 86 parts of mineral powder and 70 parts of fly ash, wherein the additive comprises a polycarboxylic acid high-performance water reducing agent, polymethacrylic acid, polyethylene glycol, hair powder, modified shell powder, rice hull ash and white sugar, and the mass ratio of the polycarboxylic acid high-performance water reducing agent, the polymethacrylic acid, the polyethylene glycol, the hair powder, the modified shell powder, the rice hull ash and the white sugar is 7: 4: 4: 2: 3: 7: 0.03.
water-cement ratio 0.30, sand ratio 39.
The preparation process was as described in example 1.
Comparative example
The commercial concrete comprises the following components in percentage by weight: 233 parts of cement, 836 parts of mixed sand, 1022 parts of stones, 45 parts of mineral powder, 69 parts of fly ash, 8.7 parts of an additive, 45 parts of mineral powder and 69 parts of fly ash, wherein the additive comprises a polycarboxylic acid high-performance water reducing agent, polymethacrylic acid and polyethylene glycol, and the mass ratio of the polycarboxylic acid high-performance water reducing agent to the polymethacrylic acid to the polyethylene glycol is 7: 4: 4.
water-cement ratio 0.49, sand ratio 45.
The preparation process was as described in example 1.
In this comparative example, hair powder, modified shell powder, rice hull ash, white sugar and their component contents were removed, and the remaining components and contents were the same as in example 2.
The concrete mechanical property is detected by referring to GB/T50081-2002 standard of common concrete mechanical property test method, and the test results are shown in Table 1.
TABLE 1 test results of commercial concretes prepared in examples 1-5 and comparative example
| Detecting items | Unit of | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example |
| Compressive strength | MPa | 4.8 | 5.0 | 4.6 | 4.9 | 4.7 | 3.2 |
| Adhesive strength | MPa | 0.62 | 0.64 | 0.68 | 0.63 | 0.66 | 0.44 |
As shown in Table 1, the commercial concretes prepared in examples 1 to 5 of the present invention have better compressive strength and adhesive strength than those prepared in comparative examples, and the possibility of occurrence of cracks is greatly reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A commercial concrete, characterized in that: the commercial concrete comprises the following components in percentage by weight: 500 parts of cement, 1000 parts of mixed sand, 550 parts of stone, 1050 parts of stone, 45-100 parts of mineral powder, 65-95 parts of fly ash and 6.5-17.5 parts of an additive, wherein the additive comprises a polycarboxylic acid high-performance water reducing agent, polymethacrylic acid, polyethylene glycol, hair powder and modified shell powder.
2. The commercial concrete according to claim 1, wherein: the commercial concrete comprises the following components in percentage by weight: 300 parts of cement, 891 parts of mixed sand, 1005 parts of stones, 46 parts of mineral powder, 67 parts of fly ash and 7.6 parts of an additive, wherein the additive comprises a polycarboxylic acid high-performance water reducing agent, polymethacrylic acid, polyethylene glycol, hair powder and modified shell powder.
3. A commercial concrete according to claim 1 or 2, wherein: the admixture also comprises rice hull ash and white sugar, wherein the mass ratio of the polycarboxylic acid high-performance water reducing agent to the polymethacrylic acid to the polyethylene glycol to the hair powder to the modified shell powder to the rice hull ash to the white sugar is 4-10: 2-6: 3-6: 1-3: 2-4: 2-12: 0.01-0.05.
4. The commercial concrete according to claim 3, wherein: the admixture further comprises rice hull ash and white sugar, wherein the polycarboxylic acid high-performance water reducing agent, polymethacrylic acid, polyethylene glycol, hair powder, modified shell powder, the rice hull ash and the white sugar are in a mass ratio of 7: 4: 4: 2: 3: 7: 0.03.
5. a commercial concrete according to claim 1 or 2, wherein: the water-cement ratio is 0.25-0.65.
6. A commercial concrete according to claim 1 or 2, wherein: the sand rate is 35-49.
7. The commercial concrete according to claim 1 or 2, wherein the particle size of the modified shell powder is 80-100 mesh.
8. A commercial concrete process according to any one of claims 1 to 7, comprising the steps of:
(1) soaking the shell powder in tap water for 4-10h, continuously stirring and cleaning sludge on the surface of the shell powder;
(2) naturally airing or drying the shell powder obtained after cleaning;
(3) carrying out coarse powder, then carrying out superfine grinding and sieving to obtain modified shell powder;
(4) according to the weight parts, the stones and the mixed sand are conveyed into a stirrer, the cement, the mineral powder and the fly ash are respectively conveyed into the stirrer through a conveying pipeline under negative pressure, the additive and the water are respectively conveyed into the stirrer through an additive pipe and a water pipe, and the commercial concrete mixture is formed after uniform stirring and mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010319658.4A CN111592283A (en) | 2020-04-21 | 2020-04-21 | Commercial concrete and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010319658.4A CN111592283A (en) | 2020-04-21 | 2020-04-21 | Commercial concrete and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111592283A true CN111592283A (en) | 2020-08-28 |
Family
ID=72189094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010319658.4A Pending CN111592283A (en) | 2020-04-21 | 2020-04-21 | Commercial concrete and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111592283A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114149204A (en) * | 2021-11-11 | 2022-03-08 | 湖州鸿鼎混凝土制品有限公司 | Green and environment-friendly concrete for heat-preservation and heat-insulation building and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050252420A1 (en) * | 2003-11-18 | 2005-11-17 | Research Incubator, Ltd. | Cementitious composition |
| CN104072002A (en) * | 2014-07-09 | 2014-10-01 | 广西经正科技开发有限责任公司 | Composite clay substituting natural sand and premixed concrete adopting composite clay as raw material |
| CN106145842A (en) * | 2016-06-29 | 2016-11-23 | 北京住总商品混凝土中心 | A kind of anti-crack concrete |
| CN106927780A (en) * | 2017-04-07 | 2017-07-07 | 俞家欢 | A kind of phosphate cement base ultra-toughness fibers at low temperature composite and preparation method thereof |
| CN109206947A (en) * | 2018-04-23 | 2019-01-15 | 泉州市德丽佳环保制品有限公司 | A kind of conch meal adsorbs by force coating and preparation method thereof |
| CN109437724A (en) * | 2018-12-27 | 2019-03-08 | 广东新业混凝土有限公司 | A kind of enhanced flyash, trass concrete |
-
2020
- 2020-04-21 CN CN202010319658.4A patent/CN111592283A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050252420A1 (en) * | 2003-11-18 | 2005-11-17 | Research Incubator, Ltd. | Cementitious composition |
| CN104072002A (en) * | 2014-07-09 | 2014-10-01 | 广西经正科技开发有限责任公司 | Composite clay substituting natural sand and premixed concrete adopting composite clay as raw material |
| CN106145842A (en) * | 2016-06-29 | 2016-11-23 | 北京住总商品混凝土中心 | A kind of anti-crack concrete |
| CN106927780A (en) * | 2017-04-07 | 2017-07-07 | 俞家欢 | A kind of phosphate cement base ultra-toughness fibers at low temperature composite and preparation method thereof |
| CN109206947A (en) * | 2018-04-23 | 2019-01-15 | 泉州市德丽佳环保制品有限公司 | A kind of conch meal adsorbs by force coating and preparation method thereof |
| CN109437724A (en) * | 2018-12-27 | 2019-03-08 | 广东新业混凝土有限公司 | A kind of enhanced flyash, trass concrete |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114149204A (en) * | 2021-11-11 | 2022-03-08 | 湖州鸿鼎混凝土制品有限公司 | Green and environment-friendly concrete for heat-preservation and heat-insulation building and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108285310B (en) | Ultrahigh-performance concrete prepared from waste concrete recycled fine aggregate and preparation method thereof | |
| CN103951350B (en) | A kind of structural thermal insulation lightweight aggregate concrete | |
| CN108546072B (en) | Water-resistant machine-whitewashing gypsum material | |
| CN110041035B (en) | C30 high-impermeability concrete with low consumption of rubber materials and preparation method thereof | |
| CN110627453A (en) | Marine engineering ultrahigh-performance concrete and preparation method thereof | |
| CN110563418A (en) | Steam-curing-free ultra-high performance concrete and preparation method thereof | |
| CN111943626A (en) | Gypsum-based wall leveling material and preparation method and use method thereof | |
| CN108439899B (en) | High-strength ultra-light cement-based composite material and preparation method thereof | |
| CN113816690A (en) | Concrete repairing material and preparation method thereof | |
| CN111003966B (en) | Sulfate-resistant low-alkali portland cement reinforcing agent and application thereof | |
| CN107140916B (en) | A kind of low-cost environmental-protecting mortar | |
| CN112047706A (en) | Fluorgypsum-based heat-preservation sound-insulation self-leveling mortar and preparation method and application thereof | |
| JP2009084092A (en) | Mortar-based restoring material | |
| CN110563376B (en) | Concrete reinforcing agent suitable for being prepared from machine-made sand and preparation method of mother liquor of concrete reinforcing agent | |
| CN112851273B (en) | Iron tailing sand-based energy-saving heat-insulating lightweight concrete and preparation method and application thereof | |
| CN114213078A (en) | Wet spraying method cement micro-bead combined gel system sprayed concrete repairing and reinforcing material | |
| CN107628790B (en) | Decorative cement | |
| CN112919870A (en) | High-strength self-compacting concrete with recycled fine aggregate | |
| CN111592283A (en) | Commercial concrete and preparation process thereof | |
| CN115594450B (en) | Geopolymer ceramsite lightweight concrete and preparation method thereof | |
| CN115819025B (en) | Alkali-activated modified sintered brick powder low-carbon mortar suitable for 3D printing and preparation method thereof | |
| CN115304295B (en) | High-doping waste marble powder-slag-based alkali-activated cementing material and preparation method thereof | |
| CN109265114A (en) | A kind of high-strength bricks for road surface and preparation method thereof | |
| Kryvenko et al. | High strength alkali activated slag cements with controlled setting times and early strength gain | |
| CN108821702A (en) | A kind of steel ground-slag high-strength concrete 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200828 |