CN111320432A - High-performance concrete - Google Patents
High-performance concrete Download PDFInfo
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- CN111320432A CN111320432A CN202010241823.9A CN202010241823A CN111320432A CN 111320432 A CN111320432 A CN 111320432A CN 202010241823 A CN202010241823 A CN 202010241823A CN 111320432 A CN111320432 A CN 111320432A
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- fine sand
- granite
- performance concrete
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00293—Materials impermeable to liquids
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention relates to the technical field of concrete, in particular to high-performance concrete which comprises the following steps: selecting materials: selecting raw materials such as composite portland cement, fine sand, pebbles, fly ash, an air entraining agent, a water reducing agent, natural volcanic ash, silica fume, granite and the like for later use; grinding, namely selecting 5 kilograms of materials such as granite, pebble, natural volcanic ash and the like each time, putting the materials into a collision crusher for crushing, wherein the crushing size is 0.5mm, 2mm and 0.15mm, placing and stacking the high-performance concrete in a classification mode after crushing, mixing the cement with water uniformly by the proportion of composite portland cement to water in a ratio of 1: 3, then gradually adding the pebble, fine sand, natural volcanic ash and the like to enable the cement paste to be mixed more tightly, and then enabling the cement to have a series of effects such as high strength, impermeability, frost resistance and the like through the materials such as a water reducing agent and the like which are placed step by step.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to high-performance concrete.
Background
Concrete is one of the most important civil engineering materials of the present generation. The artificial stone is prepared by a cementing material, granular aggregate (also called aggregate), water, an additive and an admixture which are added if necessary according to a certain proportion, and is formed by uniformly stirring, compacting, forming, curing and hardening.
The concrete has the characteristics of rich raw materials, low price and simple production process, so that the consumption of the concrete is increased more and more. Meanwhile, the concrete also has the characteristics of high compressive strength, good durability, wide strength grade range and the like. These characteristics make it very widely used, not only in various civil engineering, that is shipbuilding, machinery industry, ocean development, geothermal engineering, etc., but also concrete is an important material
However, in the processing process of concrete, the strength of cement can be affected according to the water-material ratio or different additive adding ratios, and low-strength concrete can appear in severe cases, so that wall body spalling can occur in the use process of buildings such as houses.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides high-performance concrete, which solves the problems that concrete with different strengths can appear according to different proportions of added materials in cement, and wall body is cracked due to low-strength concrete.
In order to achieve the above purpose, the invention provides the following technical scheme: a high-performance concrete is characterized in that: the method comprises the following steps:
(1) selecting materials:
selecting raw materials such as composite portland cement, fine sand, pebbles, fly ash, an air entraining agent, a water reducing agent, natural volcanic ash, silica fume, granite and the like for later use;
(2) grinding:
selecting 5 kg of granite, pebble, natural volcanic ash and other materials each time, putting the granite, the pebble, the natural volcanic ash and the other materials into a collision crusher for crushing, wherein the crushing size is 0.5mm, 2mm and 0.15mm, and classifying, placing and stacking the crushed materials;
(3) stirring;
placing the composite portland cement into a stirrer, adding water, stirring, sequentially adding pebbles, fine sand, natural volcanic ash, silica fume, granite powder and an air entraining agent, stirring, then adding 300ml of a water reducing agent, 100g of fly ash, 200g of a composite mineral admixture, 50g of steel slag powder and 70g of granulated blast furnace slag every 1 minute, and circularly adding for 3 times;
(4) transporting;
after the concrete is stirred, 700ml of pumping aid and 500ml of retarding and water reducing agent are added and mixed, then the mixture is transmitted into a stirring and transporting vehicle, and after the mixture reaches a conveying place, 600ml of early strength agent and 400ml of waterproofing agent are added and mixed.
Preferably, the fine sand in the step (1) is obtained by processing and colliding through a drum crusher, and then screening the fine sand in clear water through a filter screen.
Preferably, the composite portland cement with the strength of 42.5R is selected in the step (3), and the ratio of the composite portland cement to the water is 1 to 3.
Preferably, the placing amount of the stones, the fine sand, the natural volcanic ash, the silica fume, the granite powder and the air entraining agent in the step (3) is 300g, 100g, 80g, 200g and 300ml per 5 jin of cement.
Preferably, the air entraining agent in the step (3) adopts a mixture of natural non-ionic tea saponin, anionic surface active resin, an activator, calcium lignosulfonate, chloroform, sodium dodecyl benzene sulfonate and pulp waste liquid.
Preferably, the composite mineral admixture in the step (3) is a mixture of superfine silicon powder, high-activity mineral powder, phosphorous slag, diatomite and sodium sulfate.
Preferably, the particle size of the composite mineral admixture is less than or equal to 60 μm, and the material ratio in each kilogram of the composite mineral admixture is 70%, 11%, 7%, 9% and 3%.
As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:
(1) the high-performance concrete enables cement to be uniform in muddy water after being stirred by the proportion of 1: 3 of composite portland cement and water, then enables the cement paste to be more tightly mixed by gradually adding stones, fine sand, natural volcanic ash and the like, and enables the cement to have a series of effects of high strength, impermeability, frost resistance and the like by gradually placing materials such as a water reducing agent and the like.
(2) After the high-performance concrete reaches a transportation place, the early strength agent and the waterproof agent are mixed, so that the forming speed of cement paste is increased, and the incompletely formed concrete can not scatter due to the erosion of rainwater in rainy days.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the examples in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that:
the first embodiment is as follows:
(1) selecting materials:
selecting raw materials such as composite portland cement, fine sand, stones, fly ash, an air entraining agent, a water reducing agent, natural volcanic ash, silica fume, granite and the like for later use, wherein the fine sand is obtained by processing and colliding through a drum crusher, and then screening the fine sand in clear water through a filter screen, and the air entraining agent is a mixed substance of natural nonionic tea saponin, anionic surface active resin, an exciting agent, wood calcium, chloroform, sodium dodecyl benzene sulfonate and pulp waste liquid;
(2) grinding:
selecting 5 kg of granite, pebble, natural volcanic ash and other materials each time, putting the granite, the pebble, the natural volcanic ash and the other materials into a collision crusher for crushing, wherein the crushing size is 0.5mm, 2mm and 0.15mm, and classifying, placing and stacking the crushed materials;
(3) stirring;
placing the composite Portland cement into a stirrer, adding water and stirring, selecting the composite Portland cement with the strength of 42.5R, wherein the ratio of the composite Portland cement to the water is 1: 3, then sequentially placing 300g, 100g, 80g, 200g and 300ml of pebble, fine sand, natural volcanic ash, silica fume, granite powder and air entraining agent in the amount of 300g, 100g, 80g, 200g and 300ml of cement per 5 jin of cement, then placing 300ml of water reducing agent, 100g of fly ash, 200g of composite mineral admixture, 50g of steel slag powder and 70g of granulated blast furnace slag in 1 minute, and circularly adding for 3 times, wherein the composite mineral admixture adopts a mixed substance of superfine silica powder, high-activity mineral powder, phosphorous slag, diatomite and sodium sulfate, the particle size of the composite mineral admixture is less than or equal to 60 mu m, and the ratio of each jin of composite mineral is 70%, 11%, 7%, 9% and 3%;
(4) transporting;
after the concrete is stirred, 700ml of pumping aid and 500ml of retarding and water reducing agent are added and mixed, then the mixture is transmitted into a stirring and transporting vehicle, and after the mixture reaches a conveying place, 600ml of early strength agent and 400ml of waterproofing agent are added and mixed.
Example two:
(1) selecting materials:
selecting raw materials such as composite portland cement, fine sand, stones, fly ash, an air entraining agent, a water reducing agent, natural volcanic ash, silica fume, granite and the like for later use, wherein the fine sand is obtained by processing and colliding through a drum crusher, and then screening the fine sand in clear water through a filter screen, and the air entraining agent is a mixed substance of natural nonionic tea saponin, anionic surface active resin, an exciting agent, wood calcium, chloroform, sodium dodecyl benzene sulfonate and pulp waste liquid;
(2) grinding:
selecting 5 kg of granite, pebble, natural volcanic ash and other materials each time, putting the granite, the pebble, the natural volcanic ash and the other materials into a collision crusher for crushing, wherein the crushing size is 0.7mm, 2mm and 0.2mm, and classifying, placing and stacking the crushed materials;
(3) stirring;
placing the composite Portland cement into a stirrer, adding water and stirring, selecting the composite Portland cement with the strength of C50, wherein the ratio of the composite Portland cement to the water is 1: 3, then sequentially placing 200g, 150g, 80g, 200g and 300ml of pebble, fine sand, natural volcanic ash, silica fume, granite powder and air entraining agent in the amount of each 5 jin of cement, then placing 300ml of water reducing agent, 100g of fly ash, 200g of composite mineral admixture, 50g of steel slag powder and 70g of granulated blast furnace slag in 1 minute, and circularly adding for 3 times, wherein the composite mineral admixture adopts a blending substance of superfine silicon powder, high-activity mineral powder, phosphorus slag, diatomite and sodium sulfate, the particle size of the composite mineral admixture is less than or equal to 60 mu m, and the ratio of each jin of composite mineral admixture is 70%, 11%, 7%, 9% and 3%;
(4) transporting;
after the concrete is stirred, 700ml of pumping aid and 500ml of retarding and water reducing agent are added and mixed, then the mixture is transmitted into a stirring and transporting vehicle, and after the mixture reaches a conveying place, 600ml of early strength agent and 400ml of waterproofing agent are added and mixed.
Example three:
(1) selecting materials:
selecting raw materials such as composite portland cement, fine sand, stones, fly ash, an air entraining agent, a water reducing agent, natural volcanic ash, silica fume, granite, an expanding agent and the like for later use, wherein the fine sand is obtained by processing and colliding through a drum crusher, putting the fine sand into clear water through a filter screen and screening, and the air entraining agent is a mixed substance of natural nonionic tea saponin, anionic surface active resin, an exciting agent, wood calcium, chloroform, sodium dodecyl benzene sulfonate and pulp waste liquid;
(2) grinding:
selecting 5 kg of granite, pebble, natural volcanic ash and other materials each time, putting the granite, the pebble, the natural volcanic ash and the other materials into a collision crusher for crushing, wherein the crushing size is 0.5mm, 2mm and 0.15mm, and classifying, placing and stacking the crushed materials;
(3) stirring;
placing the composite Portland cement into a stirrer, adding water and stirring, selecting the composite Portland cement with the strength of 42.5R, wherein the ratio of the composite Portland cement to the water is 1: 2.5, then sequentially placing 700g, 200g, 150g, 80g, 200g, 100ml and 300ml of pebble, fine sand, natural volcanic ash, silica fume, granite powder, an air entraining agent and an expanding agent in the placing amount of every 5 jin of cement, and then placing 200ml of water reducing agent, 100g of fly ash, 200g of composite mineral admixture, 50g of steel slag powder and 70g of granulated blast furnace slag for 3 times in a circulating manner, wherein the composite admixture adopts a mixed substance of superfine silica powder, high-activity mineral powder, phosphorus slag, diatomite and sodium sulfate, the particle size of the composite admixture is not more than 60 mu m, and 60 percent of the admixture in each kilogram of the composite mineral admixture, 21%, 7%, 9% and 3%;
(4) transporting;
after the concrete is stirred, 400ml of pumping aid and 300ml of retarding and water reducing agent are added and mixed, then the mixture is transmitted into a stirring and transporting vehicle, and after the concrete reaches a conveying place, 600ml of early strength agent and 400ml of waterproofing agent are added and mixed.
Example four:
(1) selecting materials:
selecting raw materials such as composite portland cement, fine sand, stones, fly ash, an air entraining agent, a water reducing agent, natural volcanic ash, silica fume, granite and the like for later use, wherein the fine sand is obtained by processing and colliding through a drum crusher, and then screening the fine sand in clear water through a filter screen, and the air entraining agent is a mixed substance of natural nonionic tea saponin, anionic surface active resin, an exciting agent, wood calcium, chloroform, sodium dodecyl benzene sulfonate and pulp waste liquid;
(2) grinding:
selecting 5 kg of granite, pebble, natural volcanic ash and other materials each time, putting the granite, the pebble, the natural volcanic ash and the other materials into a collision crusher for crushing, wherein the crushing size is 0.6mm, 1.5mm and 0.15mm, and classifying, placing and stacking the crushed materials;
(3) stirring;
placing the composite Portland cement into a stirrer, adding water and stirring, selecting the composite Portland cement with the strength of 42.5R, wherein the ratio of the composite Portland cement to the water is 1: 3, then sequentially placing 500g, 400g, 200g, 80g, 200g and 300ml of pebble, fine sand, natural volcanic ash, silica fume, granite powder and air entraining agent in each 5 jin of cement, then placing 300ml of water reducing agent, 100g of fly ash, 200g of composite mineral admixture, 50g of steel slag powder and 70g of granulated blast furnace slag in each 1 minute, and circularly adding for 3 times, wherein the composite mineral admixture adopts a mixed substance of superfine silicon powder, high-activity mineral powder, phosphorus slag, diatomite and sodium sulfate, the particle size of the composite mineral admixture is less than or equal to 60 mu m, and the ratio of 50 percent of each jin of composite mineral admixture in each jin of composite admixture, 31%, 7%, 9% and 3%;
(4) transporting;
after the concrete is stirred, 600ml of pumping aid and 500ml of retarding and water reducing agent are added and mixed, then the mixture is transmitted into a stirring and transporting vehicle, and after the concrete reaches a conveying place, 600ml of early strength agent and 400ml of waterproofing agent are added and mixed.
The high performance concrete provided by the present invention is described in detail above. The principles and embodiments of the present invention have been explained by applying specific examples, and the above descriptions of the embodiments are only used to help understanding the method and the core idea of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (7)
1. A high-performance concrete is characterized in that: the method comprises the following steps:
(1) selecting materials:
selecting raw materials such as composite portland cement, fine sand, pebbles, fly ash, an air entraining agent, a water reducing agent, natural volcanic ash, silica fume, granite and the like for later use;
(2) grinding:
selecting 5 kg of granite, pebble, natural volcanic ash and other materials each time, putting the granite, the pebble, the natural volcanic ash and the other materials into a collision crusher for crushing, wherein the crushing size is 0.5mm, 2mm and 0.15mm, and classifying, placing and stacking the crushed materials;
(3) stirring;
placing the composite portland cement into a stirrer, adding water, stirring, sequentially adding pebbles, fine sand, natural volcanic ash, silica fume, granite powder and an air entraining agent, stirring, then adding 300ml of a water reducing agent, 100g of fly ash, 200g of a composite mineral admixture, 50g of steel slag powder and 70g of granulated blast furnace slag every 1 minute, and circularly adding for 3 times;
(4) transporting;
after the concrete is stirred, 700ml of pumping aid and 500ml of retarding and water reducing agent are added and mixed, then the mixture is transmitted into a stirring and transporting vehicle, and after the mixture reaches a conveying place, 600ml of early strength agent and 400ml of waterproofing agent are added and mixed.
2. The high performance concrete of claim 1, wherein: and (2) after the fine sand in the step (1) is processed and collided by a drum crusher, putting the fine sand into clear water through a filter screen, and screening to obtain the fine sand.
3. A high performance concrete according to claim 1 wherein: and (3) selecting the composite Portland cement with the strength of 42.5R, wherein the ratio of the composite Portland cement to water is 1: 3.
4. A high performance concrete according to claim 1 wherein: in the step (3), the placing amount of the pebbles, the fine sand, the natural volcanic ash, the silica fume, the granite powder and the air entraining agent is 300g, 100g, 80g, 200g and 300ml per 5 jin of cement.
5. A high performance concrete according to claim 1 wherein: the air entraining agent in the step (3) adopts a mixed substance of natural non-ionic tea saponin, anionic surface active resin, an exciting agent, calcium lignosulphonate, chloroform, sodium dodecyl benzene sulfonate and pulp waste liquid.
6. A high performance concrete according to claim 1 wherein: the composite mineral admixture in the step (3) adopts a mixed substance of superfine silicon powder, high-activity mineral powder, phosphorous slag, diatomite and sodium sulfate.
7. A high performance concrete according to claim 6 wherein: the grain diameter of the composite mineral admixture is less than or equal to 60 mu m, and the material proportion in each kilogram of composite mineral admixture is 70%, 11%, 7%, 9% and 3%.
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| CN202010241823.9A CN111320432A (en) | 2020-03-31 | 2020-03-31 | High-performance concrete |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010241823.9A CN111320432A (en) | 2020-03-31 | 2020-03-31 | High-performance concrete |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943138A (en) * | 2021-12-08 | 2022-01-18 | 林晓芸 | Preparation method of freeze-thaw resistant circulating concrete |
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| CN101549977A (en) * | 2009-05-14 | 2009-10-07 | 吕运征 | Composite gelate material and method of producing the same |
| CN106431145A (en) * | 2016-10-08 | 2017-02-22 | 山东省交通科学研究院 | Cement-stabilized-macadam mixture design method |
| CN107253843A (en) * | 2017-06-21 | 2017-10-17 | 湖北武大珞珈工程结构检测咨询有限公司 | Concrete dry spice of clear-water concrete surface layer and preparation method thereof is poured after a kind of |
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2020
- 2020-03-31 CN CN202010241823.9A patent/CN111320432A/en active Pending
Patent Citations (4)
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| JP2003020260A (en) * | 2001-07-03 | 2003-01-24 | Sumitomo Osaka Cement Co Ltd | Extra quick hardening and acid resistant cement material |
| CN101549977A (en) * | 2009-05-14 | 2009-10-07 | 吕运征 | Composite gelate material and method of producing the same |
| CN106431145A (en) * | 2016-10-08 | 2017-02-22 | 山东省交通科学研究院 | Cement-stabilized-macadam mixture design method |
| CN107253843A (en) * | 2017-06-21 | 2017-10-17 | 湖北武大珞珈工程结构检测咨询有限公司 | Concrete dry spice of clear-water concrete surface layer and preparation method thereof is poured after a kind of |
Non-Patent Citations (2)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943138A (en) * | 2021-12-08 | 2022-01-18 | 林晓芸 | Preparation method of freeze-thaw resistant circulating concrete |
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