CN104310833A - Functional admixture for improving durability of concrete and cement products and preparation method of functional admixture - Google Patents
Functional admixture for improving durability of concrete and cement products and preparation method of functional admixture Download PDFInfo
- Publication number
- CN104310833A CN104310833A CN201410525489.4A CN201410525489A CN104310833A CN 104310833 A CN104310833 A CN 104310833A CN 201410525489 A CN201410525489 A CN 201410525489A CN 104310833 A CN104310833 A CN 104310833A
- Authority
- CN
- China
- Prior art keywords
- concrete
- adulterant
- cement
- weather resistance
- cement products
- 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
-
- 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 relates to functional admixture for improving durability of concrete and cement products. The admixture is prepared by mixing a certain number of volume expansion carbonatite powder with alkali-aggregate reaction and an activator, namely grinding the volume expansion carbonatite powder with alkali-aggregate reaction into cement fineness, uniformly stirring with alkali-containing salt, and doping according to the mass of portland cement when the concrete and cement products are prepared. Tests prove that the functional admixture has the effects of reducing volume shrinkage of the concrete and cement products, reducing production cost of the concrete and cement products, effectively improving the compact degree and volume stability of the concrete and cement products, remarkably improving the durable performance of the concrete and cement products, improving the freeze thawing resistance, permeation resistance, carbonization resistance and other durable performances of the concrete and cement products, and prolonging the service lives of the concrete and cement products.
Description
Technical field:
The present invention relates to a kind of preparation method of the function adulterant that concrete and cement products weather resistance are improved,
Background technology:
As everyone knows, silicate cement is in hydration and hardening process, characteristic due to its clinker mineral determines the volumetric shrinkage that the concrete of sclerosis and cement products can produce some amount, this brings disadvantageous effect to the work-ing life of concrete and cement products, it is the major cause causing concrete and cement products weather resistance to decline, comprise volumetric shrinkage that drying and dehydrating formed and chemistry of cement reduces the self-constriction caused with self-desiccation, so-called chemical shrinkage refers to that the hydration reaction primary product C-S-H gel volume of cement is less than the volume sum of cement and water before aquation.So-called self-desiccation refers to that the free water amount in the micropore in cement products internal structure can not meet hydrated cementitious needs.
The particularly high performance concrete actively promoted of various countries in recent years, the High Technique Concrete of this to be a kind of with high-durability be target, it requires that concrete and cement products have good serviceability, mechanical property, alkali resistant aggregate reaction performance, resisted shrinkage performance, freezing and thawing performance, anti-permeability performance, anti-carbonization and resist chemical performance at interior multinomial performance.
But due to the increase of the cement products such as high performance concrete because of gelling material quantity and the decline of water-cement ratio, more easily strengthen the volumetric shrinkage of concrete and cement products, therefore also more remarkable on the impact of the cement products weather resistance such as concrete.Crack is produced, to the disadvantageous effect that concrete supporting capacity, serviceability, endurance quality etc. produce because of volumetric shrinkage in order to prevent the cement products such as concrete.Except adjusting mix proportion, strengthening maintenance, mixing except the good high-quality mineral aggregate of grating, can also by adding as economization agent, swelling agent, air entrapment agent, impervious agent, corrosion inhibitor etc. solve and reduce volumetric shrinkage and the cracking of concrete and cement products, to make concrete and cement products can meet the needs of various engineering, the work-ing life of concrete and cement products is extended, reaches the object of saving natural resources.
But viewed from the applicable cases of current above-mentioned all kinds of admixture, all there is obvious deficiency, as high in cost or use the shortcomings such as inconvenient, such as economization agent for concrete exist cost high mixed with other cement additive time easily produce and mate the phenomenons such as bad.Concrete ettringite class swelling agent, the crystal water that free water in concrete is transformed into solid because it produces the essence expanded, environment is needed constantly to provide liquid water so produce volumetric expansion, as liquid water can not be provided in time, particularly high performance concrete, because water-cement ratio low-cementitious material consumption is large, more easily produce self-desiccation, therefore sometimes not only can not expand and concrete internal cause volumetric shrinkage can be caused on the contrary to cause forming tiny crack.Current frost-resistant concrete often needs to mix air entrapment agent, but the diameter of quantity and bubble that air entrapment agent forms gas in concrete is not easy to control, as temperature when air entrapment agent is mixed, churning time, the factors such as the kind (as whether mixed flyash) of mineral admixture all can affect air content and the bubble diameter of concrete and cement products, the anti-freezing property fluctuating range of concrete and cement products is increased, and then affects the work-ing life of concrete and cement products.
Alkali-carbonate reaction is found in phase early 1950s, the current study mechanism scholars about Alkali-carbonate reaction delivers many articles, but main focus concentrates in the prevention that the concrete that how to use carbonatite to do to gather materials destroys by alkali-aggregate reaction, has no report to the application turned harm into good of this natural law of Alkali-carbonate reaction.
Summary of the invention:
Object of the present invention is exactly for above-mentioned the deficiencies in the prior art, provides a kind of and improves concrete and cement products weather resistance function adulterant;
Another object of the present invention is to provide a kind of preparation method improving concrete and cement products weather resistance function adulterant.
The object of the invention is to be achieved through the following technical solutions:
Improve concrete and cement products weather resistance function adulterant, it is characterized in that by mass percentage:
Volumetric expansion carbonic acid rock dust 97.0%-99.8%
Exciting agent 0.2%-3.0%
Described volumetric expansion carbonic acid rock dust is white clouds matter micrite powder or dolomite rock powder.
Described exciting agent is sodium carbonate, sodium sulfate, sodium hydroxide, salt of wormwood, potassium sulfate, potassium hydroxide, water glass, potassium silicate or gypsum.
Described weather resistance function adulterant adds 2%-22%. by general purpose portland cement quality and is prepared into high durability concrete or cement products.
Improve the preparation method of concrete and cement products weather resistance function adulterant, comprise the following steps:
A, the volumetric expansion carbonatite with alkali-aggregate reaction is worn into cement fineness;
B, by carbonatite powder 97.0%-99.8%, exciting agent 0.2%-3.0%, through mixing, makes the function adulterant of high durability concrete or cement products;
C, weather resistance function adulterant add 2%-22%. by general purpose portland cement quality and are prepared into high durability concrete or cement products.
Weather resistance function adulterant and flyash, slag micropowder compound are prepared into weather resistance function and service adulterant, weather resistance function and service adulterant mass percent:
Weather resistance function adulterant 10%-40%
Flyash, slag micropowder 60%-90%
Mix the function and service adulterant made and improve concrete and cement products weather resistance, the weather resistance function and service adulterant mixing 10%-40% by general purpose portland cement quality prepares high durability concrete and cement products.
Beneficial effect: prove through test, the present invention not only achieves and prevents cement products volumetric shrinkage, reduces the production cost of concrete and cement products, and can also improve concrete and the every endurance quality of cement products by a relatively large margin.Because it has the compactness extent and volume stability significantly improving concrete and cement products, and then improve concrete and cement products freeze-thaw-, impermeabilisation, anti-carbonization, the weather resistance such as anticorrosive, can work-ing life of significant prolongation concrete and cement products.
This is because the mixing of dolomite or white clouds matter micrite powder, the magnesium hydroxide colloidal formed with alkali reaction improves concrete compactness extent, and then make the hole in concrete become more tiny, reduction due to concrete capillary aperture makes part free water be transformed into planar water and tight planar water, causes concrete impervious, freezing tolerance to be improved.Therefore, white clouds matter micrite powder or dolomitic mixing can improve concrete impervious, anti-freezing property.
In the concrete sample made, the quantity in communicating aperture and harmless hole decreases, and therefore, the ability of opposing freeze-thaw cycle is improved.When obviously be full of cracks appears in blank sample test specimen freeze thawing 150 number surfaces, as shown in Figure 1.And there is not any crackle accompanying drawing 2 through 250 frozen process experiments in the test specimen being mixed with weather resistance function adulterant.
Accompanying drawing illustrates:
There is segmentation crack photo in the blank test specimen visible test specimen of Fig. 1 after 150 frozen process experiments
Fig. 2 is mixed with white clouds matter micrite powder test specimen and does not occur any crackle photo through 250 frozen process experiments
The cement mortar test piece intensity of Fig. 3 different white clouds matter micrite powder volume
The cement mortar test piece intensity of the different exciting agent volume of Fig. 4
Fig. 5 sodium sulfate does the cement mortar test piece intensity of exciting agent
The various material usage of the every cubic meter of concrete of Fig. 6 (Kg)
The ultimate compression strength (MPa) in concrete sample each length of time of the different dolomite rock powder volume of Fig. 7
The mass loss situation of Fig. 8 concrete after freezing and thawing test
The concrete impervious rank test result of Fig. 9
Figure 10 concrete carbonation test result
Embodiment:
Be described in further detail below in conjunction with embodiment:
Improve concrete and cement products weather resistance function adulterant, it is characterized in that by mass percentage:
Volumetric expansion carbonic acid rock dust 97.0%-99.8%
Exciting agent 0.2%-3.0%
Described volumetric expansion carbonic acid rock dust is white clouds matter micrite powder or dolomite rock powder.
Described exciting agent is sodium carbonate, sodium sulfate, sodium hydroxide, salt of wormwood, potassium sulfate, potassium hydroxide, water glass, potassium silicate or gypsum.
Described weather resistance function adulterant adds 2%-22%. by general purpose portland cement quality and is prepared into high durability concrete or cement products.
Improve the preparation method of concrete and cement products weather resistance function adulterant, comprise the following steps:
A, the volumetric expansion carbonatite with alkali-aggregate reaction is worn into cement fineness;
B, by carbonatite powder 97.0%-99.8%, exciting agent 0.2%-3.0%, through mixing, makes the function adulterant of high durability concrete or cement products;
C, weather resistance function adulterant add 2%-22%. by general purpose portland cement quality and are prepared into high durability concrete or cement products.
Weather resistance function adulterant and flyash, slag micropowder compound are prepared into weather resistance function and service adulterant, weather resistance function and service adulterant mass percent:
Weather resistance function adulterant 10%-40%
Flyash, slag micropowder 60%-90%
Mix the function and service adulterant made and improve concrete and cement products weather resistance, the weather resistance function and service adulterant mixing 10%-40% by general purpose portland cement quality prepares high durability concrete and cement products.
Embodiment 1 water-proofing anticracking plastering mortar
Water-proofing anticracking plastering mortar: water-proofing anticracking plastering mortar is by PC 32.5 cement: medium sand=1:3 forms, mixes the weather resistance function adulterant (sodium sulfate of white clouds matter micrite powder 99.7% and 0.3%) accounting for cement weight 10%.Be specially: cement 370kg, medium sand 1350kg, weather resistance function adulterant 37kg and appropriate water.
Build with common brick the pond that can be held about 0.75 cubic metre, water by laying bricks or stones, after wiping one's face 20 days with water-proofing anticracking plastering mortar, have no water-proofing anticracking plastering mortar and occur crack, be filled with water for a long time and also seepage do not occur.
Embodiment 2 water-proofing anticracking plastering mortar
Water-proofing anticracking plastering mortar is by PC 32.5 cement: medium sand=1:3 forms, mix the weather resistance function adulterant (sodium sulfate of dolomite rock powder 99.8% and 0.2%) accounting for cement weight 10%, be specially: cement 370kg, medium sand 1350kg, weather resistance function adulterant 37kg and appropriate water.
On common brick clear water metope, wipe one's face 1 square metre square three pieces with water-proofing anticracking plastering mortar, after 7 days, detect sand finish and do not find any crack.Same on common brick clear water metope, do not mix the common plastering mortar of weather resistance function adulterant, by PC 32.5 cement: medium sand=1:3 forms, be specially: cement 370kg, medium sand 1350kg and appropriate water, also to wipe one's face 1 square metre of size three pieces with contrast plastering mortar, after 7 days, then can see there is trickle mortar crack.
Embodiment 3 water-tight concrete:
Benchmark complex mineral blending material: by flyash 60%, slag powders 40% forms.
Weather resistance function and service adulterant: by flyash 40%, weather resistance function adulterant 40% (sodium sulfate of white clouds matter micrite powder 99.7% and 0.3%), slag powders 20% mixes formation.
1) C30P6 pumping water-tight concrete blank assay proportioning: PO42.5 strength rating cement, cement equivalent alkali content 0.85%, cement consumption 278kg, benchmark composite blend 80kg, sand 830kg, rubble (5-31.5mm) 1080kg, water 168kg, naphthalene series high-efficiency water-reducing agent 9kg.Actual detection ultimate compression strength 46.3MPa after 28 days, concrete impervious grade can reach P6 requirement.
2) C30P6 pumping water-tight concrete confirmatory experiment proportioning: PO42.5 strength rating cement, cement equivalent alkali content 0.88%, cement consumption 278kg, weather resistance function and service adulterant 80kg, sand 830kg, rubble (5-31.5mm) 1080kg, water 168kg, naphthalene series high-efficiency water-reducing agent 9.1kg.Actual detection ultimate compression strength 45.8MPa after 28 days, seepage-resistant grade reaches P10 requirement.
Embodiment 4 frost-resistant concrete:
Benchmark complex mineral blending material: by flyash 60%, slag powders 40% forms.
Weather resistance function and service adulterant: by flyash 40%, weather resistance function adulterant 40% (sodium sulfate of white clouds matter micrite powder 99.4% and 0.6%), slag powders 20% mixes formation.
1) C30P6 pumping water-tight concrete blank assay proportioning: PO42.5 strength rating cement, cement equivalent alkali content 0.85%, cement consumption 278kg, benchmark composite blend 80kg, sand 830kg, rubble (5-31.5mm) 1080kg, water 168kg, naphthalene series high-efficiency water-reducing agent 9kg.Slowly it is qualified that method of freezing afterwards for 28 days detects freeze thawing 150 times.
2) C30P6 pumping water-tight concrete confirmatory experiment proportioning: PO42.5 strength rating cement, cement equivalent alkali content 0.88%, cement consumption 278kg, weather resistance function and service adulterant 80kg, sand 830kg, rubble (5-31.5mm) 1080kg, water 168kg, naphthalene series high-efficiency water-reducing agent 9.2kg.Slowly it is qualified that method of freezing afterwards for 28 days detects freeze thawing 250 times.
The anti-carbonated concrete of embodiment 5:
C30 concrete benchmark proportioning: PO42.5 strength rating cement, cement equivalent alkali content 0.88%, cement consumption is 278kg, flyash 50kg, slag 30kg medium sand 840kg, rubble (5-25mm) 1010kg, water 175kg, naphthalene water reducer 7.1kg.28 days average carbonation depth 9.0mm of actual detection.C30 concrete test proportioning: PO42.5 strength rating cement, cement equivalent alkali content 0.88%, cement consumption 278kg, weather resistance function and service adulterant 80kg (composition is shown in embodiment 3), sand 840kg, rubble (5-25mm) 1010kg, water 170kg, water reducer 7.2kg.28 days average carbonation depth 5.8mm of actual detection.
Embodiment 6 water-tight concrete
C30 concrete benchmark proportioning: PO42.5 strength rating cement, cement equivalent alkali content 1.4%, cement consumption is 278kg, flyash 50kg, slag 35kg, medium sand 840kg, rubble (5-25mm) 1010kg, water 175kg, naphthalene water reducer 7.1kg.Maintenance after 28 days the actual seepage-resistant grade that detects reach P8.
C30 concrete test proportioning: PO42.5 strength rating cement, cement equivalent alkali content 1.4%, cement consumption 278kg, sand 840kg, rubble (5-25mm) 1010kg, weather resistance function and service adulterant 85kg, (specifically form by slag 30%, white clouds matter micrite powder 30%, flyash 35%, gypsum 5% forms, because cement equivalent alkali content is higher, therefore do not need separately to add containing alkali salt), water 177kg, naphthalene water reducer 7.2kg.Maintenance after 28 days the actual seepage-resistant grade that detects reach P12.
Embodiment 7
Water-tight concrete: C30P6 pumping water-tight concrete benchmark proportioning: PO42.5 strength rating cement, cement equivalent alkali content 0.85%, cement consumption is 275kg, flyash 80kg, medium sand 840kg, rubble (5-31.5mm) 1010kg, water 170kg, naphthalene water reducer 9kg.Within 28 days, the actual seepage-resistant grade that detects can reach P8 requirement.
C30P6 pumping water-tight concrete test proportioning: PO42.5 strength rating cement, cement equivalent alkali content 0.85%, cement consumption 275kg, weather resistance function and service adulterant 80kg (note: by flyash 59.5%, dolomite rock powder 40% and sodium hydroxide 0.5% form), sand 836kg, rubble (5-31.5mm) 1008kg, water 170kg, water reducer 9.5kg.Within 28 days, actual seepage-resistant grade can reach P12 requirement.
Embodiment 8
Benchmark complex mineral blending material: by flyash 60%, slag powders 40% forms,
Weather resistance function and service adulterant: by flyash 40%, dolomite rock powder 39.5%, sodium hydroxide 0.5%, slag powders 20% forms.
C30 concrete benchmark proportioning: PO42.5 strength rating cement, cement equivalent alkali content 0.85%, cement consumption 278kg, benchmark composite blend 50kg, sand 830kg, rubble (5-31.5mm) 1080kg, water 168kg, water reducer, 5.4kg.
C30 concrete experiments proportioning: PO42.5 strength rating cement, cement equivalent alkali content 0.85%, cement consumption 278kg, weather resistance function and service adulterant (composition is shown in embodiment 3) 50kg, sand 830kg, rubble (5-31.5mm) 1080kg, water 168kg, water reducer 5.4kg.
Concrete resistance to compression in 28 days, folding strength, as subordinate list 4, do not affect concrete resistance to compression, folding strength by experimental result known weather resistance function adulterant.
Embodiment 9 water-tight concrete:
C30P6 pumping water-tight concrete benchmark proportioning: PO42.5 strength rating cement, cement equivalent alkali content 0.85%, cement consumption is 275kg, flyash 80kg, medium sand 840kg, rubble (5-31.5mm) 1010kg, water 170kg, naphthalene water reducer 9kg.Within 28 days, the actual seepage-resistant grade that detects can reach P8 requirement.
C30P6 pumping water-tight concrete test proportioning: PO42.5 strength rating cement, cement equivalent alkali content 0.85%, cement consumption 275kg, weather resistance function and service adulterant 80kg (composition flyash 40%, dolomite rock powder 39.3%, water glass 0.7%, slag powders 20% forms), sand 836kg, rubble (5-31.5mm) 1008kg, water 170kg, water reducer 9.1kg.Within 28 days, actual seepage-resistant grade can reach P14 requirement.
Claims (6)
1. improve concrete and a cement products weather resistance function adulterant, it is characterized in that, by mass percentage:
Volumetric expansion carbonic acid rock dust 97.0%-99.8%
Exciting agent 0.2%-3.0%.
2. according to raising concrete according to claim 1 and cement products weather resistance function adulterant, it is characterized in that, described volumetric expansion carbonic acid rock dust is white clouds matter micrite powder or dolomite rock powder.
3., according to raising concrete according to claim 1 and cement products weather resistance function adulterant, it is characterized in that, described exciting agent is sodium carbonate, sodium sulfate, sodium hydroxide, salt of wormwood, potassium sulfate, potassium hydroxide, water glass, potassium silicate or gypsum.
4. according to raising concrete according to claim 1 and cement products weather resistance function adulterant, it is characterized in that, described weather resistance function adulterant adds 2% ~ 22% by general purpose portland cement quality and is prepared into high durability concrete or cement products.
5. improve a preparation method for concrete and cement products weather resistance function adulterant, it is characterized in that, comprise the following steps:
A, the volumetric expansion carbonatite with alkali-aggregate reaction is worn into cement fineness;
B, by carbonatite powder 97.0%-99.8%, exciting agent 0.2%-3.0%, mixes the function adulterant making high durability concrete or cement products;
C, add weather resistance function adulterant 2%-22% by general purpose portland cement quality and be prepared into high durability concrete or cement products.
6. according to raising concrete according to claim 1 and cement products weather resistance function adulterant, it is characterized in that, weather resistance function adulterant and flyash, slag micropowder compound are prepared into weather resistance function and service adulterant, weather resistance function and service adulterant mass percent:
Weather resistance function adulterant 10%-40%
Flyash, slag micropowder 60%-90%
Mix the function and service adulterant made and improve concrete and cement products weather resistance, the weather resistance function and service adulterant mixing 10%-40% by general purpose portland cement quality prepares high durability concrete and cement products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410525489.4A CN104310833A (en) | 2014-10-07 | 2014-10-07 | Functional admixture for improving durability of concrete and cement products and preparation method of functional admixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410525489.4A CN104310833A (en) | 2014-10-07 | 2014-10-07 | Functional admixture for improving durability of concrete and cement products and preparation method of functional admixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104310833A true CN104310833A (en) | 2015-01-28 |
Family
ID=52366184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410525489.4A Pending CN104310833A (en) | 2014-10-07 | 2014-10-07 | Functional admixture for improving durability of concrete and cement products and preparation method of functional admixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104310833A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104926160A (en) * | 2015-07-04 | 2015-09-23 | 阮炯正 | Preparation method for high-performance cement |
| CN107417144A (en) * | 2017-08-31 | 2017-12-01 | 黄志德 | The method that low calcium matter complex cement raw material produces portland cement |
| CN112745076A (en) * | 2021-01-06 | 2021-05-04 | 北京市高强混凝土有限责任公司 | Concrete doped with dolomite powder and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004345889A (en) * | 2003-05-21 | 2004-12-09 | Denki Kagaku Kogyo Kk | Cement composition |
| WO2007054960A2 (en) * | 2005-09-06 | 2007-05-18 | Ibrahimbhai Kalaniya Yusuf | A method of production for metallic iron concrete hardener and cement concrete made therefrom |
| CN103396026A (en) * | 2013-07-17 | 2013-11-20 | 吉林建筑大学 | Preparation method and new application of dolomite complex admixture |
| CN103588442A (en) * | 2013-11-09 | 2014-02-19 | 青岛益群漆业集团有限公司 | Development of cement-based permeable crystallization anti-acid waterproof coating |
-
2014
- 2014-10-07 CN CN201410525489.4A patent/CN104310833A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004345889A (en) * | 2003-05-21 | 2004-12-09 | Denki Kagaku Kogyo Kk | Cement composition |
| WO2007054960A2 (en) * | 2005-09-06 | 2007-05-18 | Ibrahimbhai Kalaniya Yusuf | A method of production for metallic iron concrete hardener and cement concrete made therefrom |
| CN103396026A (en) * | 2013-07-17 | 2013-11-20 | 吉林建筑大学 | Preparation method and new application of dolomite complex admixture |
| CN103588442A (en) * | 2013-11-09 | 2014-02-19 | 青岛益群漆业集团有限公司 | Development of cement-based permeable crystallization anti-acid waterproof coating |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104926160A (en) * | 2015-07-04 | 2015-09-23 | 阮炯正 | Preparation method for high-performance cement |
| CN107417144A (en) * | 2017-08-31 | 2017-12-01 | 黄志德 | The method that low calcium matter complex cement raw material produces portland cement |
| CN112745076A (en) * | 2021-01-06 | 2021-05-04 | 北京市高强混凝土有限责任公司 | Concrete doped with dolomite powder and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104844099B (en) | A kind of lower shrinkage low viscosity super high strength concrete | |
| CN105645894A (en) | High-performance concrete with large mixing amount of mineral powder and manufacturing method of high-performance concrete | |
| CN105621907A (en) | Calcium-base geopolymer and preparation method thereof | |
| CN103896527A (en) | Lightweight high-strength cement based composite material | |
| CN103803918A (en) | Porcelain powder waste mixed cement-based tiny-expansion crack repairing mortar and using method thereof | |
| CN103922662A (en) | Ultra-high performance cement base composite material | |
| CN102659370B (en) | Mineral admixture concrete and preparation method thereof | |
| CN104496350A (en) | Corrosion-resistant polymer modified cement mortar and preparation method thereof | |
| Wang et al. | Effects of the lithologic character of manufactured sand on properties of concrete | |
| CN111620589A (en) | Cement grouting material additive capable of adapting to various working conditions and improving performance of grouting material and preparation method and application thereof | |
| WO2007026352A2 (en) | Compressive strenght imrpovement of cement and gypsum products | |
| CN105948640A (en) | Novel cement-based infiltrating crystalline waterproof material and preparation method therefor | |
| CN103553515B (en) | A kind of dry-mix being mixed with phosphorus slag powder | |
| CN104310833A (en) | Functional admixture for improving durability of concrete and cement products and preparation method of functional admixture | |
| CN110451885A (en) | A kind of high-strength superhigh-lift pump concrete viscosity reduction regulation method based on material particle size matched design | |
| CN103771800A (en) | Bayer process red mud-doped dry-blending masonry mortar and using method thereof | |
| CN103951355B (en) | Ultra-fine anti-segregation injecting paste material and preparation method thereof | |
| CN104926160A (en) | Preparation method for high-performance cement | |
| CN101497508B (en) | Composite modifying agent and low-strength concrete prepared thereby | |
| CN103113055A (en) | Concrete for sliding film construction of silo structure | |
| CN116283119A (en) | Anti-cracking and anti-seepage concrete and preparation method thereof | |
| KR100979180B1 (en) | Composition of rapid setting micro cement | |
| CN106380163A (en) | Desert sand self-leveling mortar, and preparation method and construction method thereof | |
| CN105777031A (en) | Fluorgypsum-based floor board and preparation method thereof | |
| CN105837148B (en) | A kind of waste residue cement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150128 |