CN102329096B - High-early-strength mineral additive for concrete - Google Patents
High-early-strength mineral additive for concrete Download PDFInfo
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- CN102329096B CN102329096B CN 201110186372 CN201110186372A CN102329096B CN 102329096 B CN102329096 B CN 102329096B CN 201110186372 CN201110186372 CN 201110186372 CN 201110186372 A CN201110186372 A CN 201110186372A CN 102329096 B CN102329096 B CN 102329096B
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- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 71
- 239000011707 mineral Substances 0.000 title claims abstract description 71
- 239000000654 additive Substances 0.000 title claims abstract description 66
- 230000000996 additive effect Effects 0.000 title claims abstract description 62
- 239000004567 concrete Substances 0.000 title claims abstract description 62
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002956 ash Substances 0.000 claims abstract description 26
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 26
- 239000010703 silicon Substances 0.000 claims abstract description 26
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 20
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 18
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 18
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 18
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 17
- 229920005646 polycarboxylate Polymers 0.000 claims abstract description 17
- 239000010881 fly ash Substances 0.000 claims description 36
- 239000002994 raw material Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 28
- 230000000694 effects Effects 0.000 abstract description 23
- 239000004568 cement Substances 0.000 abstract description 20
- 238000011161 development Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 5
- 239000000843 powder Substances 0.000 abstract description 2
- 239000010883 coal ash Substances 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 239000004570 mortar (masonry) Substances 0.000 description 8
- 239000004576 sand Substances 0.000 description 8
- 239000011083 cement mortar Substances 0.000 description 7
- 238000006703 hydration reaction Methods 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 7
- 239000003292 glue Substances 0.000 description 6
- 238000000227 grinding Methods 0.000 description 5
- 230000036571 hydration Effects 0.000 description 5
- 238000011049 filling Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- -1 breeze Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000004574 high-performance concrete Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000010534 mechanism of action Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241001669679 Eleotris Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910001653 ettringite Inorganic materials 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a high-early-strength mineral additive for concrete, which is characterized in that the high-early-strength mineral additive consists of the following ingredients which are mixed by mass percent: 30-50 percent of mineral powder, 20-35 percent of pulverized coal ash, 5-15 percent of silicon ash, 5-15 percent of metakaolin, 2-5 percent of sodium sulfate and 1-2 percent of polycarboxylate water reducing agent The high-early-strength mineral additive provided by the invention can be used for concrete prefabricated members, grouting materials, patching materials and the like. When 10 percent of high-early-strength mineral additive is added to replace cement to prepare the concrete, the water demand is small, the early activity index is high, the strength development situation is good, and compared with common cement and mineral additives, the dry shrinkage resistance is improved greatly.
Description
Technical field
The present invention relates to building material technical field, be specifically related to a kind of for concrete high early strong mineral additive.
Background technology
Along with the development of highway, railway, harbour, aviation and urban construction, technology of high performance concrete has become demand and the developing direction of modern project.Utilize breeze, flyash, silicon ash etc. to replace as mineral additive that part of cement prepares mortar or concrete not only can reduce resource cost, reduce concrete Financial cost, and can improve the performance of concrete work, mechanics and the aspect such as durable.Mineral additive has become indispensable important component part in the high performance concrete.
But in the practical engineering application process, find that mineral additive commonly used exists problem as follows: the first, the mineral additive such as breeze, flyash replaces part of cement preparation mortar or concrete, can occur prolonging time of coagulation, the problems such as early strength is lower, strength development is slow, affect demould time, incur loss through delay the duration, can not reach the requirement of rapid construction; Although second, the mineral additive activity such as silicon ash is higher, can improve in theory concrete early stage and later strength, but because its specific surface area is large, water requirement is higher, for guaranteeing mortar or concrete serviceability, in use tend to add water, improve water-cement ratio, so that mortar or concrete strength decreased.
The mechanism of action of different minerals admixture in concrete is not quite similar, mineral additive is when improving concrete aspect performance, also can affect otherwise performance, can improve concrete intensity and weather resistance such as the silicon ash, but large its volume of the water requirement of silicon ash is restricted, and the concrete self-desiccation shrinkage of admixture silicon ash also can increase; The water requirement of breeze is little, and the early age strength of concrete of admixture breeze is lower slightly, self-desiccation shrinkage increases to some extent; The concrete self-desiccation shrinkage of fly ash changes less, use the flyash of high-quality can reduce concrete water requirement to a certain extent, but the anti-carbonization ability of flyash concrete has certain decline, etc.Domestic and international relevant studies show that: mutual compound synergistic effect or the super folded effect (Synergistic) of producing between the mineral additive, the different sorts mineral additive is compound can bring into play separately advantage to reach the mutual supplement with each other's advantages effect.Find under study for action such as people such as the He Zhen of Wuhan University, flyash and breeze are 1: 1 in the volume ratio, and are mixed with under the condition of a small amount of exciting agent, show well super synergistic effect, compare the experimental result of singly mixing separately, mortar or concrete performance are greatly improved.
Summary of the invention
The purpose of this invention is to provide that a kind of this mineral additive water requirement is little, the early activity index is high, the strength development situation is good for concrete high early strong mineral additive, dry shrinkage resistance can be strong.
To achieve these goals, the technical solution adopted in the present invention is: a kind of for concrete high early strong mineral additive, it is characterized in that it is mixed by breeze, flyash, silicon ash, metakaolin, sodium sulfate and polycarboxylate water-reducer, the shared mass percent of each raw material is:
Breeze: 30～50%, flyash: 20～35%, the silicon ash: 5～15%, metakaolin: 5～15%, sodium sulfate: 2～5%, polycarboxylate water-reducer: 1～2%.
The mass ratio of the preferred flyash of the present invention and breeze is 2: 3.
The preferred silicon ash of the present invention is 1: 1 with the mass ratio of metakaolin.
The preferred various raw-material best in quality percentage ratios of the present invention are: breeze: 45%, and flyash: 30%, the silicon ash: 10%, metakaolin: 10%, sodium sulfate: 4%, polycarboxylate water-reducer: 1%.
The specific surface area of described breeze is 550～600kg/m
2, the specific surface area of described flyash is 550～600kg/m
2
Above-mentioned a kind of preparation method for concrete high early strong mineral additive, it comprises the steps:
1) breeze, flyash are carried out grinding, control its specific surface area at 550～600kg/m
2In the scope; Superfine pulverizing technique has mechanical excitation to breeze and flyash, by increasing the specific surface area of particle, improve its surface energy and activity, and can adjust to a certain extent the effect of its filling effect, mostly be the ballotini body through levigate particle, particle surface is smooth, and hydration reaction can carry out more fully;
2) by the shared mass percent of each raw material be: breeze: 30～50%, flyash: 20～35%, silicon ash: 5～15%, metakaolin: 5～15%, sodium sulfate: 2～5%, polycarboxylate water-reducer: 1～2%, breeze, flyash, silicon ash, metakaolin, sodium sulfate and polycarboxylate water-reducer are mixed, obtain a kind of for concrete high early strong mineral additive.
In the above-mentioned starting material, breeze, flyash, silicon ash, metakaolin belong to cement components, and the chemical admixture components such as sodium sulfate and polycarboxylate water-reducer can improve the water requirement that mortar or concrete early strength also can reduce this mineral additive.
The present invention also provides the application of a kind of described high early strong mineral additive in the preparation concrete, it is characterized in that, described high early strong mineral additive is replaced cement with 10% (quality %) volume.
The present invention is directed to existing concrete mineral admixture replacement part of cement uses in concrete, can occur that early age strength of concrete reduces, strength development is slow or the problems such as the reduction of concrete serviceability, the increase of mixing water amount, mix again by proper ratio by the different sorts mineral additive, be aided with the means such as mechanical grinding and chemical activation, prepare a kind of high morning of strong mineral additive, the technical indicator that reaches of expection is as follows: 1. SO
3≤ 3.0%; 2. 1d activity index 〉=125%, 28d activity index 〉=110%; 3. chloride ion content≤0.02%; 4. loss on ignition≤4.0%; 5. water ratio≤1.0%; 6. water demand ratio≤105%.The range of application of the early strong mineral additive of this height is wider, can be widely used in concrete prefabricated product and other concrete workses higher to the mineral additive performance requriements such as sleeper, track plates, precast beam.
According to composition and the structural analysis to all kinds of mineral additives, the mechanism of action of all kinds of mineral additives in cement system is not quite similar, and can there be some defectives in a kind of mineral additive of independent employing.Therefore the preparation of the early strong mineral additive of this height is to mix again technology as main guiding theory, for example: SiO in the flyash
2And Al
2O
3Content is higher, but its CaO content is on the low side, and the breeze that itself and CaO content is higher according to a certain percentage compound use just can be adjusted to proper ratio with the calcium silicon ratio in the system, promotes the generation of early hydration product such as ettringite etc.; The fine particle of silicon ash can be filled between the cement granules particle, brings into play good filling effect, and the high reactivity of silicon ash and metakaolin also can more than remedy the slow defectives of mineral additive hydration reaction such as flyash and breeze; The effect of the microdilatancy that the filling effect that flyash is good and the reaction of metakaolin early hydration have can reduce mortar or concrete drying shrinkage effectively.
First characteristics of the present invention: through the test of system, find that flyash and breeze ratio in the cement mortar system are at 2: 3 o'clock, under the prerequisite that guarantees identical degree of mobilization, the mechanical property of cement mortar reaches best effect; Silicon ash and high alumina powder ratio in the cement mortar system is 1: 1 o'clock, and under the prerequisite that guarantees identical degree of mobilization, mechanical property reaches best effect.
Second characteristic of the present invention: the performance that further improves mineral additive by the chemical activation means of the admixtures such as the agent of admixture sulphate activation, polycarboxylate water-reducer.Sodium sulfate can excite the hydration activity of the mineral additives such as flyash, breeze, promotes its early hydration process; The adding of the mineral additives such as breeze can reduce concrete early hydration temperature rise, the temperature rise that the quickening of hydrated cementitious speed causes behind the alleviation adding sodium sulfate is too fast, avoid occurring in the concrete temperature rise crack, flyash, breeze etc. can be realized the complementary concrete early stage and later stage performance of improving to a certain extent with being compounded in of sodium sulfate.The specific surface area of the flyash after levigate, breeze and silicon ash, metakaolin is large, surfactivity is high, adsorpting water quantity is more, water requirement is high, the polycarboxylate water-reducer that admixture is an amount of can reduce the adsorpting water quantity of high early strong mineral additive, reduces the water requirement of high early strong mineral additive.
The invention has the beneficial effects as follows: this mineral additive water requirement is little, the early activity index is high, the strength development situation is good, and dry shrinkage resistance can be strong.
The high early strong mineral additive of the reinforcement of concrete of the present invention's development can be used for concrete prefabricated element, injection material, patching material etc., its water requirement is little, the early activity index is high, strength development in order, its dry shrinkage resistance can contrast common cement and mineral admixture is greatly improved.The early strong mineral additive of this height has overcome the shortcomings such as mineral additive early strength commonly used is low, strength development is slow, water requirement is high, drying shrinkage is larger, and has utilized in a large number the material such as industrial residue, is a kind of high early strong mineral additive of environmental protection.
Embodiment
In order to understand better the present invention, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Embodiment 1～3:
Each proportioning raw materials that is used for concrete high early strong mineral additive is as shown in table 1.
The high early strong mineral additive proportioning of table 1
Above-mentioned a kind of preparation method for concrete high early strong mineral additive, it comprises the steps:
1) breeze, flyash are carried out grinding, control its specific surface area at 550～600kg/m
2In the scope;
2) press the proportioning of table 1, breeze, flyash, silicon ash, metakaolin, sodium sulfate and polycarboxylate water-reducer are mixed, obtain a kind of for concrete high early strong mineral additive.
Method for testing performance:
1, the preparation of benchmark sample: adopt P.O 52.5 cement 450g, standard sand 1350g, water consumption 225ml, according to GB/T2419-2005 (Test method for fluidity of cement mortar), and moulding 40 * 40 * 160mm glue sand test specimen, 20 ± 2 ℃ of temperature, humidity is maintenance under the condition more than 90%.
2, the preparation of test sample: adopt P.O 52.5 cement 405g, the high early strong mineral additive 45g for preparing, standard sand 1350g, water consumption adopts the water consumption that has identical divergence with standard test specimen, and maintenance method is identical with standard.
Table 2 has provided the activity index of embodiment 1～3 and benchmark sample cement mortar strength assay and mineral additive.
Cement mortar strength and the activity index of table 2 benchmark sample, embodiment
From table 1 and table 2, can find out, using prepared high early strong mineral additive to replace in the situation of 10% cement, the 1d of embodiment 1～3,28d intensity all far surpass 1d, the 28d intensity of benchmark sample, the 1d of embodiment 1～3,28d activity index surpassed all that design objective requires 125% and 110%, illustrate that this mineral additive early activity index is high, the strength development situation is good.
Provide other performance perameters of embodiment (i.e. numbering) 1～3 during table 3 is further.
The high early strong mineral additive embodiment performance perameter of table 3
From table 3, can see, the high early strong mineral additive water demand ratio of embodiment 1～3 is between 81～83%, much smaller than design objective 105%, lower water requirement can improve concrete serviceability or reduce concrete water consumption raising mechanical property and endurance quality under with the water-cement ratio condition, and the harmful substance contents of high early strong mineral additive, loss on ignition, water ratio etc. have all reached design requirements.
1～No. 3 embodiment and benchmark sample are carried out glue sand sample contract with dry rate simultaneous test.Provide the benchmark sample in the table 4 and mix the glue sand sample contract with dry rate of mineral additive.
The glue sand test specimen contract with dry rate of table 4 benchmark sample, embodiment
As can be seen from Table 4, mix high early strong mineral additive after because water consumption reduces and the high early strong good filling effect of mineral additive can reduce the contract with dry rate of glue sand test specimen effectively, the anti-dry-shrinkage deformed ability of mortar strengthens, the volume stability increase.Illustrate that this mineral additive dry shrinkage resistance can be strong.
By finding out in the table 2,3,4, no matter embodiment 3 is that when dry shrinkage resistance can be all better than No. 1, No. 2 embodiment for mechanical property, water requirement, select No. 3 embodiment through overtesting, now provide with the high early strong mineral additive of No. 3 Example formulations and test the test of concrete strength result that obtains as the performance reference, the gained concrete performance is as shown in table 5.
Table 5 test of concrete strength result
See by the service condition in concrete, in the situation that the early strong mineral additive of this height replaces cement with 10% volume, concrete 3,7,28,56d intensity are increased to respectively 113%, 115%, 109%, 109%, as seen should not only can improve significantly concrete early strength by the early strong mineral additive of height, and can improve post-strength of concrete, improve significantly concrete mechanical property.
Embodiment 4
Get breeze 41g, flyash 35g, silicon ash 5g, metakaolin 15g, sodium sulfate 2g, polycarboxylate water-reducer 2g mix, and replace cement with 10% volume and prepare concrete.
Method for testing performance is identical with embodiment 1, the results are shown in Table 6-8.
Embodiment 5
Get breeze 38g, flyash 30g, silicon ash 15g, metakaolin 10g, sodium sulfate 5g, polycarboxylate water-reducer 2g mix, and replace cement with 10% volume and prepare concrete.
Method for testing performance is identical with embodiment 1, the results are shown in Table 6-8.
Embodiment 6
Get breeze 44g, flyash 20g, silicon ash 15g, metakaolin 15g, sodium sulfate 4g, polycarboxylate water-reducer 2g.First breeze and flyash are carried out grinding, control its specific surface area at 550～600kg/m
2In the scope, then mix with other raw material, replace cement with 10% volume and prepare concrete.
Method for testing performance is identical with embodiment 1, the results are shown in Table 6-8.
Embodiment 7
Get breeze 50g, flyash 23g, silicon ash 15g, metakaolin 5g, sodium sulfate 5g, polycarboxylate water-reducer 2g.First breeze and flyash are carried out grinding, control its specific surface area at 550～600kg/m
2In the scope, then mix with other raw material, replace cement with 10% volume and prepare concrete.
Method for testing performance is identical with embodiment 1, the results are shown in Table 6-8 (numbering 4-7 is embodiment 4-7).
The cement mortar strength of table 6 embodiment and activity index
The high early strong mineral additive embodiment performance perameter of table 7
The glue sand test specimen contract with dry rate of table 8 embodiment
Claims (5)
1. one kind is used for concrete high early strong mineral additive, it is characterized in that it is mixed by breeze, flyash, silicon ash, metakaolin, sodium sulfate and polycarboxylate water-reducer, the shared mass percent of each raw material is: breeze: 30～50%, flyash: 20～35%, silicon ash: 5～15%, metakaolin: 5～15%, sodium sulfate: 2～5%, polycarboxylate water-reducer: 1～2%.
2. according to claim 1 a kind ofly it is characterized in that for concrete high early strong mineral additive, the mass ratio of flyash and breeze is 2:3.
3. according to claim 1 a kind ofly it is characterized in that for concrete high early strong mineral additive, the silicon ash is 1:1 with the mass ratio of metakaolin.
4. according to claim 1 a kind ofly it is characterized in that for concrete high early strong mineral additive, various raw-material mass percents are: breeze: 45%, flyash: 30%, the silicon ash: 10%, metakaolin: 10%, sodium sulfate: 4%, polycarboxylate water-reducer: 1%.
5. according to claim 1 a kind ofly it is characterized in that for concrete high early strong mineral additive, the specific surface area of described breeze is 550～600m
2/ kg, the specific surface area of described flyash is 550～600m
2/ kg.
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| EP2784036A1 (en) * | 2013-03-26 | 2014-10-01 | Basf Se | Quickly suspending powder-form compound |
| CN103253916B (en) * | 2013-04-15 | 2016-01-06 | 武汉理工大学 | A kind of hardening accelerator for improving phosphogypsum base cement concrete strength and preparation method thereof |
| CN104386936B (en) * | 2014-09-15 | 2016-03-02 | 中国建筑材料科学研究总院 | Composite blend, preparation method and the concrete preparation of colliery outer shaft wall and constructional method |
| CN105152564A (en) * | 2015-07-20 | 2015-12-16 | 苏州市兴邦化学建材有限公司 | Powdery polycarboxylic acid water reducing agent for commercial concrete |
| CN109053012A (en) * | 2018-08-28 | 2018-12-21 | 江苏恒大高性能材料有限公司 | A kind of preparation method of corrosion resistance mineral additive |
| CN109133767A (en) * | 2018-08-31 | 2019-01-04 | 武汉理工大学 | A kind of high-collapse-retentivity rock base mineral additive and preparation method thereof for concrete |
| CN110255954B (en) * | 2019-04-11 | 2021-08-24 | 武汉理工大学 | Nano lithium slag early strength agent and preparation method and application thereof |
| CN110981380B (en) * | 2019-12-20 | 2021-02-02 | 湖南大学 | Concrete for underground pipeline and preparation method thereof |
| CN111187023A (en) * | 2020-01-14 | 2020-05-22 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Mineral modifier for igneous rock powder |
| CN111908825A (en) * | 2020-07-24 | 2020-11-10 | 尧柏特种水泥技术研发有限公司 | Early strength type nano mineral admixture for concrete and preparation method thereof |
| CN112028534B (en) * | 2020-08-25 | 2021-06-18 | 北京金隅水泥节能科技有限公司 | Early-strength water reducing agent, production process and application thereof |
| CN112209646A (en) * | 2020-10-12 | 2021-01-12 | 四川省川铁枕梁工程有限公司 | High-performance pre-dispersed silica mortar and preparation method thereof |
| CN113003996A (en) * | 2021-01-29 | 2021-06-22 | 保利长大工程有限公司 | Early-strength low-shrinkage high-flow-state high-performance concrete for pretensioned beam and preparation method thereof |
| ES2923823B2 (en) * | 2021-02-08 | 2023-03-10 | S A Sulquisa | Solid additive to enhance the mechanical resistance of cement pastes, mortars or concretes with high contents of "SCMs" |
| CN114276072B (en) * | 2021-04-28 | 2022-10-04 | 山西瑞通路桥新技术有限公司 | Light high-performance concrete for assembled bridge and preparation method thereof |
| CN113735481B (en) * | 2021-08-27 | 2023-01-24 | 河南理工大学 | Composite early strength mineral admixture and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456685A (en) * | 2009-01-04 | 2009-06-17 | 武汉理工大学 | Anti-crack alkalis excited ecological cement |
| CN101698576A (en) * | 2009-10-22 | 2010-04-28 | 厦门大学 | Method for preparing slag-activated metakaolin cementitious materials |
Family Cites Families (1)
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| CN102348660B (en) * | 2009-01-22 | 2015-08-26 | 天主教美利坚大学 | For cement and concrete special geopolymer composite adhesive |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456685A (en) * | 2009-01-04 | 2009-06-17 | 武汉理工大学 | Anti-crack alkalis excited ecological cement |
| CN101698576A (en) * | 2009-10-22 | 2010-04-28 | 厦门大学 | Method for preparing slag-activated metakaolin cementitious materials |
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