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
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- 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
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- 239000004568 cement Substances 0.000 title claims abstract description 120
- 239000004567 concrete Substances 0.000 title claims abstract description 99
- 238000002360 preparation method Methods 0.000 title claims description 7
- 239000000843 powder Substances 0.000 claims abstract description 33
- 239000011398 Portland cement Substances 0.000 claims abstract description 10
- 239000010430 carbonatite Substances 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 239000012190 activator Substances 0.000 claims abstract 3
- 239000010881 fly ash Substances 0.000 claims description 20
- 239000002893 slag Substances 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 14
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 239000010459 dolomite Substances 0.000 claims description 9
- 229910000514 dolomite Inorganic materials 0.000 claims description 9
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 8
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 8
- 235000011152 sodium sulphate Nutrition 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- 235000019353 potassium silicate Nutrition 0.000 claims description 6
- 239000010440 gypsum Substances 0.000 claims description 4
- 229910052602 gypsum Inorganic materials 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 239000004111 Potassium silicate Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 3
- 235000015320 potassium carbonate Nutrition 0.000 claims description 3
- 235000011118 potassium hydroxide Nutrition 0.000 claims description 3
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 3
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 3
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 3
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 3
- 235000011151 potassium sulphates Nutrition 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 235000017550 sodium carbonate Nutrition 0.000 claims description 3
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 3
- 230000006870 function Effects 0.000 claims 5
- 235000019738 Limestone Nutrition 0.000 claims 1
- 239000004115 Sodium Silicate Substances 0.000 claims 1
- 239000006028 limestone Substances 0.000 claims 1
- 230000036299 sexual function Effects 0.000 claims 1
- 229910052911 sodium silicate Inorganic materials 0.000 claims 1
- 235000019794 sodium silicate Nutrition 0.000 claims 1
- 239000003513 alkali Substances 0.000 abstract description 18
- 238000002474 experimental method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000035515 penetration Effects 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 35
- 239000004576 sand Substances 0.000 description 18
- 239000003795 chemical substances by application Substances 0.000 description 17
- 239000003638 chemical reducing agent Substances 0.000 description 14
- 239000004570 mortar (masonry) Substances 0.000 description 11
- 239000011435 rock Substances 0.000 description 11
- 238000002156 mixing Methods 0.000 description 10
- 238000005086 pumping Methods 0.000 description 8
- 238000004078 waterproofing Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000007710 freezing Methods 0.000 description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- 239000011707 mineral Substances 0.000 description 6
- 235000010755 mineral Nutrition 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 description 5
- 238000010257 thawing Methods 0.000 description 5
- 239000011449 brick Substances 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 150000002790 naphthalenes Chemical class 0.000 description 4
- 230000003245 working effect Effects 0.000 description 4
- 239000011083 cement mortar Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000004574 high-performance concrete Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 208000034189 Sclerosis Diseases 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012496 blank sample Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001653 ettringite Inorganic materials 0.000 description 1
- 230000007914 freezing tolerance Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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
本发明涉及一种提高混凝土及水泥制品耐久性功能掺合料,是由一定数量具有碱骨料反应的体积膨胀碳酸岩粉和激发剂混合组成；即将具有碱骨料反应的体积膨胀碳酸岩磨成水泥细度，与含碱盐搅拌均匀，在制备混凝土及水泥制品时按硅酸盐水泥的质量掺入。经试验证明，本发明不仅取得了减少混凝土及水泥制品的体积收缩，减低混凝土及水泥制品的生产成本，而且能有效地提高混凝土及水泥制品的致密程度及体积稳定性，具有显著提高混凝土及水泥制品的耐久性能效果，可以提高混凝土及水泥制品抗冻融、抗渗透、抗碳化等耐久性能，能延长混凝土及水泥制品的使用寿命。
The invention relates to a functional admixture for improving the durability of concrete and cement products, which is composed of a certain amount of volume-expanded carbonatite powder with alkali-aggregate reaction and an activator; Fineness of cement, mixed with alkali-containing salt evenly, mixed in according to the quality of Portland cement when preparing concrete and cement products. It has been proved by experiments that the present invention not only reduces the volume shrinkage of concrete and cement products, reduces the production cost of concrete and cement products, but also can effectively improve the compactness and volume stability of concrete and cement products, and has the ability to significantly improve the performance of concrete and cement products. The durability effect of the product can improve the durability of concrete and cement products such as freeze-thaw resistance, penetration resistance, and carbonation resistance, and can prolong the service life of 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)
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| 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 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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