CN115745475A - Concrete capable of improving crack resistance and preparation method thereof - Google Patents
Concrete capable of improving crack resistance and preparation method thereof Download PDFInfo
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- CN115745475A CN115745475A CN202210586289.4A CN202210586289A CN115745475A CN 115745475 A CN115745475 A CN 115745475A CN 202210586289 A CN202210586289 A CN 202210586289A CN 115745475 A CN115745475 A CN 115745475A
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- 239000004567 concrete Substances 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000000835 fiber Substances 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000004568 cement Substances 0.000 claims abstract description 37
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 30
- 239000011707 mineral Substances 0.000 claims abstract description 30
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 28
- 235000019738 Limestone Nutrition 0.000 claims abstract description 28
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 28
- 239000011651 chromium Substances 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 28
- 238000000576 coating method Methods 0.000 claims abstract description 28
- 239000006028 limestone Substances 0.000 claims abstract description 28
- 238000003756 stirring Methods 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 238000005336 cracking Methods 0.000 claims abstract description 19
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000000498 cooling water Substances 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000004576 sand Substances 0.000 claims description 33
- 239000010881 fly ash Substances 0.000 claims description 28
- 239000004575 stone Substances 0.000 claims description 28
- 239000002245 particle Substances 0.000 claims description 17
- 239000002893 slag Substances 0.000 claims description 9
- 238000003809 water extraction Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000002956 ash Substances 0.000 claims description 6
- 239000011575 calcium Substances 0.000 claims description 6
- 229910052791 calcium Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 3
- 235000020681 well water Nutrition 0.000 claims description 3
- 239000002349 well water Substances 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 abstract description 2
- 238000000227 grinding Methods 0.000 description 4
- 230000036571 hydration Effects 0.000 description 4
- 238000006703 hydration reaction Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000012744 reinforcing agent Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000011449 brick Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses concrete capable of improving crack resistance and a preparation method thereof, wherein the concrete comprises the following components in parts by weight: 300-400 parts of cement, 400-500 parts of coarse and fine aggregates, 60-100 parts of anti-cracking fibers, 120-200 parts of active mineral fine admixture, 100-200 parts of black chromium coating and 150-280 parts of limestone, wherein a certain amount of raw materials such as cement, coarse and fine aggregates, anti-cracking fibers, a water reducing agent, active mineral fine admixture, black chromium coating, limestone and the like are prepared, then the raw materials are stored and placed in a low-temperature shade area, then cooling operation is carried out, cooling water with lower temperature is used during stirring and mixing, the initial temperature of the materials is reduced, and the temperature of the mixture is correspondingly reduced. The concrete capable of improving the crack resistance and the preparation method thereof are characterized in that mixed water with the temperature of-10 to 4 ℃ is used for mixing operation in the preparation process, and meanwhile, the raw materials are subjected to preliminary refrigeration treatment, so that the generated heat is reduced in the later mixing process, the large temperature difference stress is avoided, and the cracks on the surface of the concrete are avoided.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to concrete capable of improving crack resistance and a preparation method thereof.
Background
Concrete is a common building material, the brick bodies can be sealed, adhered and fixed through the concrete, and the types of the concrete on the market are many due to different characteristics of the concrete prepared from different internal raw materials, but the concrete still has some problems in the using and preparing processes;
1. the publication No. CN112079605A discloses a concrete for inhibiting concrete cracks and a preparation method thereof, which controls the particle sizes of coarse aggregate, fine aggregate, fly ash and nano neutral silica sol, improves the compactness of the concrete and better improves the crack resistance of the concrete by the mutual matching of materials with different particle sizes, is beneficial to prolonging the service life of a product, but because the temperature of the raw materials is overhigh in the preparation process of the concrete, for example, the heat continuously released by cement with high hydration heat after being mixed with water in use can greatly exceed the internal temperature of the concrete to cause larger temperature difference stress, so that cracks are generated on the surface of the concrete;
2. at present, high profit under the condition of meeting the strength is simply pursued, so that a cement plant adopts grinding aids for grinding and mixing reinforcing agents, the fineness is thinner and thinner, C3S and C3A in minerals in the minerals are higher and higher, and the cracking sensitivity is increased and components which are not beneficial to the long-term performance stability and durability of concrete are added;
we have therefore proposed a concrete having improved crack resistance and a method for preparing the same, in order to solve the problems set forth above.
Disclosure of Invention
The invention aims to provide concrete capable of improving crack resistance and a preparation method thereof, and aims to solve the problems that the internal temperature of the concrete greatly exceeds the external temperature due to the continuous heat release of cement with high hydration heat in the market in use so as to cause larger temperature difference stress and generate cracks on the surface of the concrete, and the high profit under the strength is simply pursued at present, so that a cement factory adopts grinding aids for grinding and doping reinforcing agents, the fineness is thinner and thinner, C3S and C3A in minerals are higher and higher, the crack sensitivity is increased, and components which are not favorable for the long-term performance stability and durability of the concrete are not improved.
In order to achieve the purpose, the invention provides the following technical scheme: the concrete capable of improving the crack resistance comprises the following components in parts by weight: 300-400 parts of cement, 400-500 parts of coarse and fine aggregate, 60-100 parts of anti-crack fiber, 120-200 parts of active mineral fine admixture, 100-200 parts of black chromium coating and 150-280 parts of limestone.
Preferably, the cement comprises 300 parts of cement, 400 parts of coarse and fine aggregate, 60 parts of anti-cracking fiber, 120 parts of active mineral fine admixture, 100 parts of black chromium coating and 150 parts of limestone.
Preferably, 370 parts of cement, 450 parts of coarse and fine aggregate, 85 parts of anti-crack fiber, 160 parts of active mineral fine admixture, 150 parts of black chromium coating and 200 parts of limestone.
Preferably, the cement comprises 400 parts of cement, 500 parts of coarse and fine aggregate, 100 parts of anti-cracking fiber, 200 parts of active mineral fine admixture, 200 parts of black chromium coating and 280 parts of limestone.
Preferably, the deviation range of the use amount of the black chromium coating and the limestone is 6-9%, the anti-crack fiber is steel fiber, and the fine active mineral admixture is water extraction blast furnace slag.
Preferably, the coarse and fine aggregate comprises 100-250 parts of yellow sand, 200-300 parts of stone and 70-150 parts of fly ash, the density of the yellow sand is 2.3-3.1g/cm < 3 >, the fly ash is low-calcium ash, and the density of the fly ash is 300 g/cm < 3 >.
Preferably, the particle size range of the yellow sand is 1 mm-1.8 mm, and the particle size range of the stone is 20 mm-30 mm.
Preferably, the deviation range of the dosage of the cement and the yellow sand is 2-5%, and the deviation range of the dosage of the stone and the fly ash anti-cracking fiber is 6-9%.
The invention provides another technical scheme for providing a preparation method of concrete capable of improving crack resistance, which comprises the following steps:
s1: preparation of raw materials:
s11: firstly, preparing raw materials such as cement, coarse and fine aggregates, anti-cracking fibers, a water reducing agent, an active mineral fine admixture, a black chromium coating, limestone and the like in a certain amount;
s12: screening yellow sand and stones in the coarse and fine aggregates to ensure that the yellow sand and the stones meet the standard particle size;
s13: then storing the raw materials in the S12 in a low-temperature shade area, then performing cooling operation, and using cooling water with lower temperature during stirring and mixing to reduce the initial temperature of the materials and correspondingly reduce the temperature of the mixture;
s2: weighing and proportioning:
s21: weighing the raw materials appearing in the step S12 one by one to enable the raw materials to accord with the later-stage mixing proportion;
s22: preparing a certain amount of mixed water, wherein the mixed water can use well water with lower temperature or cool the water by a refrigerator so as to ensure that the water temperature is lower;
s3: mixing and stirring:
s31: pouring the cement and the yellow sand weighed in the step S21 together, then adding a certain amount of mixed water prepared in the step S22, and then stirring;
s32: after stirring for a period of time, adding stone, fly ash anti-cracking fiber and a water reducing agent for stirring, wherein a certain amount of mixed water can be properly added according to the condition;
s33: then stirring for a period of time, adding the fine active mineral admixture, the black chromium coating and the limestone for mixing, and adding a certain amount of mixed water according to the condition during the mixing period, and stirring for a period of time;
s4: then the concrete preparation is completed.
Preferably, the temperature range of the mixed water is-10 to 4 ℃, the stirring time is 1.5 to 2 hours, and the stirring speed is 100 to 140r/min.
Compared with the prior art, the invention has the beneficial effects that: according to the concrete capable of improving the crack resistance and the preparation method thereof, the raw materials are cooled in the preparation process, and cold water with a certain temperature is used for stirring and mixing, so that the hydration heat generated by later-stage mixing can be reduced, and the concrete is prevented from generating cracks, and the concrete content is as follows:
(1) Mixing operation is carried out by using mixed water at the temperature of minus 10 to 4 ℃, and meanwhile, the raw materials are subjected to primary refrigeration treatment, so that the heat generated in the later mixing process is reduced, the large temperature difference stress is avoided, and the cracks on the surface of the concrete are avoided;
(2) The black chromium coating and the limestone are added, so that the black chromium coating and the limestone can absorb certain heat after later-stage mixing, the interior of the concrete is cooled conveniently, cracks on the surface of the concrete can be avoided, and meanwhile, the anti-cracking performance of the concrete is improved through the use of anti-cracking fibers;
(3) The active mineral fine admixture made of water-extraction blast furnace slag is added to replace the using amount of cement, so that the bonding strength of coarse and fine aggregate and cement is improved, the bonding strength of cement, stone hardening compactness and coarse and fine aggregate is improved, the blast furnace slag can be recycled, the waste of the blast furnace slag is avoided, and the energy is saved.
Drawings
FIG. 1 is a graph of the effect of mixed water temperature on concrete temperature according to the present invention;
FIG. 2 is a schematic flow chart of the present invention.
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. 1-2, the present invention provides a technical solution: a concrete having improved crack resistance, which is excellent in crack resistance,
the first embodiment is as follows:
the material comprises the following components in parts by weight: 300 parts of cement, 400 parts of coarse and fine aggregate, 60 parts of anti-cracking fiber, 120 parts of active mineral fine admixture, 100 parts of black chromium coating and 150 parts of limestone.
The deviation range of the use amount of the black chromium coating and the limestone is 6-7%, the anti-crack fiber is steel fiber, and the active mineral fine admixture is water extraction blast furnace slag.
The coarse and fine aggregate is composed of 100 parts of yellow sand, 200 parts of stone and 70 parts of fly ash, the density of the yellow sand is 2.3-2.7 g/cm < 3 >, the fly ash is low-calcium ash, and the density of the fly ash is 300 g/cm < 3 >.
The particle size range of the yellow sand is 1 mm-1.8 mm, and the particle size range of the stone is 20 mm-30 mm.
The dosage deviation range of the cement and the yellow sand is 2 to 5 percent, and the dosage deviation range of the stone and the fly ash anti-crack fiber is 6 to 9 percent.
The second embodiment:
the composite material comprises the following components in parts by weight: 370 parts of cement, 450 parts of coarse and fine aggregate, 85 parts of anti-cracking fiber, 160 parts of active mineral fine admixture, 150 parts of black chromium coating and 200 parts of limestone.
The deviation range of the use amount of the black chromium coating and the limestone is 6-8%, the anti-crack fiber is steel fiber, and the active mineral fine admixture is water extraction blast furnace slag.
The coarse and fine aggregate is composed of 200 parts of yellow sand, 260 parts of stone and 90 parts of fly ash, the density of the yellow sand is 2.7-3.1g/cm < 3 >, the fly ash is low-calcium ash, and the density of the fly ash is 300 g/cm < 3 >.
The particle size range of the yellow sand is 1 mm-1.8 mm, and the particle size range of the stone is 20 mm-30 mm.
The dosage deviation range of the cement and the yellow sand is 4 to 5 percent, and the dosage deviation range of the stone and the fly ash anti-crack fiber is 6 to 9 percent.
Example three:
the material comprises the following components in parts by weight: 400 parts of cement, 500 parts of coarse and fine aggregate, 100 parts of anti-cracking fiber, 200 parts of active mineral fine admixture, 200 parts of black chromium coating and 280 parts of limestone.
The deviation range of the dosage of the black chromium coating and the limestone is 8-9%, the anti-crack fiber is steel fiber, and the active mineral fine admixture is water extraction blast furnace slag.
The coarse and fine aggregate is composed of 50 parts of yellow sand, 300 parts of stone and 150 parts of fly ash, the density of the yellow sand is 2.9-3g/cm < 3 >, the fly ash is low-calcium ash, and the density of the fly ash is 300 g/cm < 3 >.
The particle size range of the yellow sand is 1 mm-1.8 mm, and the particle size range of the stone is 20 mm-30 mm.
The dosage deviation range of the cement and the yellow sand is 2 to 5 percent, and the dosage deviation range of the stone and the fly ash anti-crack fiber is 6 to 9 percent.
Example four:
the composite material comprises the following components in parts by weight: 370 parts of cement, 460 parts of coarse and fine aggregate, 80 parts of anti-cracking fiber, 180 parts of active mineral fine admixture, 180 parts of black chromium coating and 260 parts of limestone.
The deviation range of the dosage of the black chromium coating and the limestone is 8-9%, the anti-crack fiber is steel fiber, and the active mineral fine admixture is water extraction blast furnace slag.
The coarse and fine aggregate is composed of 30 parts of yellow sand, 280 parts of stone and 130 parts of fly ash, the density of the yellow sand is 2.8g/cm < 3 >, the fly ash is low-calcium ash, and the density of the fly ash is 300 g/cm < 3 >.
The particle size range of the yellow sand is 1 mm-1.8 mm, and the particle size range of the stone is 20 mm-30 mm.
The dosage deviation range of the cement and the yellow sand is 2 to 5 percent, and the dosage deviation range of the stone and the fly ash anti-crack fiber is 6 to 9 percent
In order to better show the concrete using method capable of improving crack resistance, the preparation method of the concrete capable of improving crack resistance in the embodiment comprises the following steps:
the first step is as follows: preparation of raw materials:
s11: firstly, preparing raw materials such as cement, coarse and fine aggregates, anti-cracking fibers, a water reducing agent, an active mineral fine admixture, a black chromium coating, limestone and the like in a certain amount;
s12: screening yellow sand and stones in the coarse and fine aggregates to ensure that the yellow sand and the stones meet the standard particle size;
s13: then storing the raw materials in the step S12 in a low-temperature shade area, then performing cooling operation, and reducing the initial temperature of the materials and correspondingly reducing the temperature of the mixture by using cooling water with lower temperature during stirring and mixing;
the second step is that: weighing and proportioning:
s21: weighing the raw materials appearing in the step S12 one by one to enable the raw materials to accord with the later-stage mixing proportion;
s22: preparing a certain amount of mixed water, wherein the mixed water can use well water with lower temperature or cool the water through a refrigerator, so that the water temperature is lower;
the third step: mixing and stirring:
s31: pouring the cement and the yellow sand weighed in the step S21 together, then adding a certain amount of mixed water prepared in the step S22, and then stirring;
s32: after stirring for a period of time, adding the stone, the fly ash anti-crack fibers and the water reducing agent for stirring, and adding a certain amount of mixed water according to the condition;
s33: then stirring for a period of time, adding the fine active mineral admixture, the black chromium coating and the limestone for mixing, and adding a certain amount of mixed water according to the condition during the mixing;
the fourth step: then the concrete preparation is completed.
The temperature range of the mixed water is-10 to 4 ℃, the stirring time is 1.5 to 2 hours, and the stirring speed is 100 to 140r/min, as shown in figure 1, the temperature of the mixed water is particularly important for the hydration heat reaction generated when cement is mixed, and the heat released after the cement is mixed with water when in use can be effectively reduced by controlling the temperature of the mixed water, so that the internal temperature of the concrete is prevented from greatly exceeding the external temperature, and the anti-cracking performance of the concrete is improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof.
Claims (10)
1. The concrete capable of improving crack resistance is characterized by comprising the following components in parts by weight: 300-400 parts of cement, 400-500 parts of coarse and fine aggregate, 60-100 parts of anti-crack fiber, 120-200 parts of active mineral fine admixture, 100-200 parts of black chromium coating and 150-280 parts of limestone.
2. The concrete for improving crack resistance according to claim 1, wherein: 300 parts of cement, 400 parts of coarse and fine aggregate, 60 parts of anti-crack fiber, 120 parts of active mineral fine admixture, 100 parts of black chromium coating and 150 parts of limestone.
3. The concrete for improving crack resistance according to claim 1, wherein: 370 parts of cement, 450 parts of coarse and fine aggregate, 85 parts of anti-crack fiber, 160 parts of active mineral fine admixture, 150 parts of black chromium coating and 200 parts of limestone.
4. The concrete for improving crack resistance according to claim 1, wherein: 400 parts of cement, 500 parts of coarse and fine aggregate, 100 parts of anti-crack fiber, 200 parts of active mineral fine admixture, 200 parts of black chromium coating and 280 parts of limestone.
5. Concrete with improved crack resistance according to claim 1, characterized in that: the deviation range of the use amount of the black chromium coating and the limestone is 6-9%, the anti-crack fiber is steel fiber, and the active mineral fine admixture is water extraction blast furnace slag.
6. The concrete for improving crack resistance according to claim 1, wherein: the coarse and fine aggregate is composed of 100-250 parts of yellow sand, 200-300 parts of stone and 70-150 parts of fly ash, the density of the yellow sand is 2.3-3.1g/cm < 3 >, the fly ash is low-calcium ash, and the density of the fly ash is 300 g/cm < 3 >.
7. Concrete with improved crack resistance according to claim 6, characterized in that: the particle size range of the yellow sand is 1 mm-1.8 mm, and the particle size range of the stone is 20 mm-30 mm.
8. The concrete for improving crack resistance according to claim 1, wherein: the dosage deviation range of the cement and the yellow sand is 2-5%, and the dosage deviation range of the stone and the fly ash anti-cracking fiber is 6-9%.
9. A method of preparing concrete with improved crack resistance according to claim 1, characterized in that it comprises the following steps:
s1: preparation of raw materials:
s11: firstly, preparing raw materials such as cement, coarse and fine aggregates, anti-cracking fibers, a water reducing agent, an active mineral fine admixture, a black chromium coating, limestone and the like in a certain amount;
s12: screening yellow sand and stones in the coarse and fine aggregates to ensure that the yellow sand and the stones meet the standard particle size;
s13: then storing the raw materials in the step S12 in a low-temperature shade area, then performing cooling operation, and reducing the initial temperature of the materials and correspondingly reducing the temperature of the mixture by using cooling water with lower temperature during stirring and mixing;
s2: weighing and proportioning:
s21: weighing the raw materials appearing in the step S12 one by one to enable the raw materials to accord with the later mixing proportion;
s22: preparing a certain amount of mixed water, wherein the mixed water can use well water with lower temperature or cool the water by a refrigerator so as to ensure that the water temperature is lower;
s3: mixing and stirring:
s31: pouring the cement and the yellow sand weighed in the step S21 together, then adding a certain amount of mixed water prepared in the step S22, and then stirring;
s32: after stirring for a period of time, adding stone, fly ash anti-cracking fiber and a water reducing agent for stirring, wherein a certain amount of mixed water can be properly added according to the condition;
s33: then stirring for a period of time, adding the fine active mineral admixture, the black chromium coating and the limestone for mixing, and adding a certain amount of mixed water according to the condition during the mixing period, and stirring for a period of time;
s4: then the concrete preparation is completed.
10. The method for preparing concrete capable of improving crack resistance according to claim 9, wherein: the temperature range of the mixed water is-10 to 4 ℃, the stirring time is 1.5 to 2 hours, and the stirring speed is 100 to 140r/min.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010016267A (en) * | 2000-11-28 | 2001-03-05 | 강연도 | Manufacture of Expansive Material for Cement and Concrete Crack |
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| CN211548200U (en) * | 2019-12-10 | 2020-09-22 | 中铁十六局集团置业投资有限公司 | Novel building energy-saving wall |
| CN112694299A (en) * | 2021-01-29 | 2021-04-23 | 中铁二院工程集团有限责任公司 | High-crack-resistance concrete for plateau environment and preparation method thereof |
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| CN113698154A (en) * | 2021-09-23 | 2021-11-26 | 怀化大众混凝土有限公司 | High-crack-resistance concrete for building and manufacturing method thereof |
-
2022
- 2022-05-27 CN CN202210586289.4A patent/CN115745475A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20010016267A (en) * | 2000-11-28 | 2001-03-05 | 강연도 | Manufacture of Expansive Material for Cement and Concrete Crack |
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| CN211548200U (en) * | 2019-12-10 | 2020-09-22 | 中铁十六局集团置业投资有限公司 | Novel building energy-saving wall |
| CN112694299A (en) * | 2021-01-29 | 2021-04-23 | 中铁二院工程集团有限责任公司 | High-crack-resistance concrete for plateau environment and preparation method thereof |
| CN113336508A (en) * | 2021-06-30 | 2021-09-03 | 中际远宏(福建)建设发展有限公司 | Self-compacting concrete and construction method thereof |
| CN113698154A (en) * | 2021-09-23 | 2021-11-26 | 怀化大众混凝土有限公司 | High-crack-resistance concrete for building and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
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| 苗兴皓等: "《水利工程施工技术》", 中国环境出版社, pages: 160 - 161 * |
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Application publication date: 20230307 |