CN113788645A - Novel self-healing combined pavement concrete capable of absorbing automobile exhaust - Google Patents
Novel self-healing combined pavement concrete capable of absorbing automobile exhaust Download PDFInfo
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- CN113788645A CN113788645A CN202111118862.0A CN202111118862A CN113788645A CN 113788645 A CN113788645 A CN 113788645A CN 202111118862 A CN202111118862 A CN 202111118862A CN 113788645 A CN113788645 A CN 113788645A
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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
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
Abstract
The invention provides novel self-healing combined pavement concrete capable of absorbing automobile exhaust, which has the mass per unit volume of steel slag powder of 50-70kg/m3300-slag powder 350kg/m330-50kg/m cement3300-grade self-made fluorescent stone resin of 500kg/m3500-600kg/m of steel slag aggregate with particle size of 0-5mm31200-1300kg/m steel slag aggregate with particle size of 0-10mm3190-3The self-made capsule granules are 15-30kg/m3. The self-made capsule contains active calcium oxide inside, and is externally a macromolecular polymer such as paraffin, and the macromolecular polymer can be melted at a certain critical temperature, when the concrete has no crack and is at normal temperature, the capsule is intact, when the concrete cracks, and under the action of automobile exhaust, the capsule is broken and reacts with carbon dioxide in the exhaust to form calcium carbonate, and the concrete is repaired. This novel self-healing closes slay and slag on road surface concrete can not only consume the place and give up admittedly, still has high strength, high durable physical properties, and when the concrete fracture simultaneously, can also realize absorbing vapour with the help of self-control capsule granuleThe tail gas of the vehicle has the effect of healing the concrete, thereby making the best use of things, changing waste into valuable, saving energy and reducing emission.
Description
Technical Field
The invention relates to novel self-healing combined road surface concrete, in particular to novel self-healing combined road surface concrete capable of absorbing automobile exhaust.
Background
The self-healing concrete is concrete capable of automatically repairing cracks. Concrete is the most widely used building material in the world. It is prone to cracking, which means that the structure needs to be reinforced with additional steel reinforcement. Some "microcracking" must occur during the strengthening process, which does not directly result in a loss of strength. The concrete structure specification specifies a maximum crack width of 0.3mm or less. But over time, water enters these cracks along with aggressive chemicals and corrodes the concrete. The traditional self-healing concrete contains dormant bacterial spores capable of producing limestone and nutrients required for bacterial growth, and is activated by corrosive rainwater infiltration acting on a structure so as to fill the cracked part of the concrete locally.
Therefore, when the self-healing concrete in the prior art is used on a road surface, the problems of difficult preparation and high cost exist, and the application environment is limited, so that the self-healing concrete cannot be widely applied.
Disclosure of Invention
In order to solve the problems, the capsule particles formed by active calcium oxide wrapped in paraffin are used as a repairing source, when concrete does not crack, the gelled particles are completely present in the concrete, when the concrete cracks, the paraffin at the crack is damaged, the active calcium oxide is exposed, calcium carbonate is formed under the action of carbon dioxide in air or automobile exhaust, and the concrete cracks are filled.
Combine the theoretical basis of the problem that above-mentioned road surface concrete exists and self-healing capsule granule ammonia, the aim at of this application provides a novel self-healing way road surface concrete that can absorb automobile exhaust.
In order to achieve the above purpose, the novel self-healing pavement concrete capable of absorbing automobile exhaust comprises the following components: the steel slag comprises steel slag powder, cement, self-made capsule particles, steel slag aggregates with various particle sizes and water, wherein the unit volume mass of each component is as follows:
50-70kg/m of steel slag powder3，
Slag powder 300-350kg/m3，
30-50kg/m cement3，
The self-made capsule granule is 15-30kg/m3，
500-600kg/m of steel slag aggregate with particle size of 0-5mm3，
1400-class 1500kg/m steel slag aggregate with grain diameter of 0-10mm3，
190-class water 210kg/m3。
Preferably, in the novel self-healing combined pavement concrete capable of absorbing automobile exhaust, the unit volume mass of the steel slag powder is 60kg/m3。
In the novel self-healing combined pavement concrete capable of absorbing automobile exhaust, the specific surface area of the steel slag is 300-400m2Per kg, the specific surface area of the slag is 350-450m2/kg。
Furthermore, in the novel self-healing combined pavement concrete capable of absorbing automobile exhaust, the self-made capsule particles contain active calcium oxide inside and contain a macromolecular polymer which can be melted at a certain critical temperature outside.
Further, the macromolecular polymer of the present invention is paraffin.
Effects of the invention
The novel self-healing combined pavement concrete capable of absorbing the automobile exhaust, disclosed by the invention, has the advantages that as the raw materials are solid waste such as steel slag powder and slag powder, the slag and steel slag solid waste on a consumption place can be consumed, the novel self-healing combined pavement concrete also has the physical properties of high strength, high durability and low cost, and meanwhile, when the concrete cracks, the effect of automatically healing the concrete by absorbing the automobile exhaust can be realized by means of self-made capsule particles, so that the purposes of making the best use of things, changing waste into valuable, saving energy and reducing emission are achieved, and the novel self-healing combined pavement concrete can be widely applied.
Detailed Description
Specific examples of the present invention will be described in detail below.
The raw materials of the novel self-healing pavement concrete adopt solid wastes such as steel slag powder, slag powder and the like in various places as raw materials, cement, steel slag aggregate with various particle sizes, water and the like are added, and the cost is very low.
Comparative example 1
Firstly, the novel self-healing combined pavement concrete serving as a comparative example is prepared by mixing and stirring steel slag powder, cement, steel slag aggregate with various particle sizes and water, wherein the unit volume mass of each component is as follows:
50kg/m of steel slag powder3，
Slag powder 350kg/m3，
50kg/m cement3，
600kg/m of steel slag aggregate with grain diameter of 0-5mm3，
1400kg/m of steel slag aggregate with the grain diameter of 0-10mm3，
190kg/m3 of water.
Wherein the specific surface area of the steel slag is 400m2Per kg, the specific surface area of the slag is 450m2/kg。
The inventors of the present invention examined various physical properties of the prepared novel self-healing combined pavement concrete, wherein the compressive strength of the pavement concrete after being cured for 28 days is 42MPa, the compressive strength of the pavement concrete after being cured for 28 days is 12MPa, and the self-healing rate of the pavement is 28%.
Secondly, on the basis of the components of the comparative example, the inventor further adopts a technical mode of preparing the self-healing capsule particles by combining active calcium oxide and paraffin, the capsule particles formed by the active calcium oxide wrapped in the paraffin are used as a repairing source, when concrete does not crack or is at normal temperature, the gelled particles are completely present in the concrete, when the concrete cracks, the paraffin at the crack is damaged, the active calcium oxide is exposed, calcium carbonate is formed under the action of carbon dioxide in air or automobile exhaust, the concrete crack is filled and repaired, the automatic healing is realized, the energy is saved, the emission is reduced, and the harm of the automobile exhaust to the environment is reduced.
The chemical reaction formula specifically involved is as follows:
CaO+CO2→CaCO3
therefore, the novel self-healing road surface concrete can automatically absorb automobile exhaust, not only can consume slag and steel slag on places to be solid waste, but also can prepare high-strength, high-durability and low-cost road surface concrete, and meanwhile, when the concrete cracks, the novel self-healing road surface concrete can absorb the automobile exhaust by means of self-made capsule particles, has the effect of healing the concrete, and achieves the purposes of making the best use of things, changing waste into valuables, saving energy and reducing emission.
The following description is directed to specific examples of the present invention, and various physical properties of the prepared novel self-healing combined road concrete capable of absorbing automobile exhaust are also tested, and it is found that the self-healing rate is greatly improved compared with comparative example 1. The following is a detailed description.
Example 1
The novel self-healing pavement concrete capable of absorbing automobile exhaust, which is disclosed by the embodiment 1 of the invention, is prepared by mixing and stirring steel slag powder, cement, self-made capsule particles, steel slag aggregates with different particle sizes and water, wherein the unit volume mass of each component is as follows:
50kg/m of steel slag powder3，
Slag powder 350kg/m3，
50kg/m cement3，
Self-made capsule granules 30kg/m3，
600kg/m of steel slag aggregate with grain diameter of 0-5mm3，
1500kg/m of steel slag aggregate with grain diameter of 0-10mm3，
190kg/m water3。
Wherein the specific surface area of the steel slag is 400m2Per kg, slag specific surface area 450m2/kg。
In addition, the self-made capsule particles of example 1 of the present invention contain activated calcium oxide inside and a macromolecular polymer such as paraffin outside, and are meltable at a certain critical temperature.
The present inventors have conducted tests on the physical properties of the novel self-healing pavement concrete capable of absorbing automobile exhaust according to example 1, and have respectively tested the 28-day compressive strength, the 28-day compressive strength after the concrete surface is damaged and the self-healing rate thereof after the concrete is cured again for 28 days.
The results are as follows: the compressive strength of the prepared concrete is 40MPa after 28 days, the compressive strength is 35MPa after the concrete is cured again for 28 days after the surface of the concrete is damaged, and the self-healing rate is 87.5 percent.
Therefore, although the raw materials of the invention adopt solid wastes such as steel slag powder and slag powder, the prepared novel self-healing combined pavement concrete capable of absorbing the automobile exhaust has high strength, high durability and low cost, and the self-healing rate is greatly superior to that of the comparative example 1.
Example 2
The novel self-healing pavement concrete capable of absorbing automobile exhaust, which is disclosed by the embodiment 2 of the invention, is prepared by mixing and stirring steel slag powder, cement, self-made capsule particles, steel slag aggregates with different particle sizes and water, wherein the unit volume mass of each component is as follows:
50kg/m of steel slag powder3，
Slag powder 350kg/m3，
50kg/m cement3，
Self-made capsule granule 15kg/m3，
600kg/m of steel slag aggregate with grain diameter of 0-5mm3，
1500kg/m of steel slag aggregate with grain diameter of 0-10mm3，
190kg/m water3。
In addition, in the novel self-healing combined pavement concrete capable of absorbing automobile exhaust according to embodiment 2, the specific surface area of the steel slag is 400m2Per kg, the specific surface area of the slag is 450m2/kg。
In addition, the self-made capsule particles of the invention contain active calcium oxide inside and macromolecular polymer such as paraffin outside, and can be melted at a certain critical temperature.
After the preparation, the inventors tested the physical properties of the novel self-healing combined pavement concrete capable of absorbing automobile exhaust according to example 2, and tested the 28-day compressive strength, the 28-day compressive strength after pavement damage and the self-healing rate thereof after re-curing for 28 days.
The results are as follows: the prepared pavement concrete has the compressive strength of 43MPa after 28 days, the compressive strength of 26MPa after the pavement is damaged and maintained again for 28 days, and the self-healing rate of 60.5 percent, which is greatly superior to that of the comparative example 1.
Therefore, although the raw materials of the invention adopt solid wastes such as steel slag powder and slag powder, the prepared novel self-healing combined pavement concrete capable of absorbing the automobile exhaust has high strength, high durability and low cost, and the self-healing rate is greatly superior to that of the comparative example 1.
Example 3
The novel self-healing pavement concrete capable of absorbing automobile exhaust, which is disclosed by the embodiment 3 of the invention, is prepared by mixing and stirring steel slag powder, cement, self-made capsule particles, steel slag aggregates with different particle sizes and water, wherein the unit volume mass of each component is as follows:
70kg/m of steel slag powder3，
Slag powder 350kg/m3，
30kg/m cement3，
Self-made capsule granules 30kg/m3，
500kg/m of steel slag aggregate with grain diameter of 0-5mm3，
1400kg/m of steel slag aggregate with the grain diameter of 0-10mm3，
210kg/m water3。
In the novel self-healing combined road surface concrete of embodiment 2, the specific surface area of the steel slag is 300m2Per kg, the specific surface area of the slag is 350m2/kg。
In addition, the self-made capsule particles of the invention contain active calcium oxide inside and macromolecular polymer such as paraffin outside, and can be melted at a certain critical temperature.
After the preparation, the inventors tested the physical properties of the novel self-healing combined pavement concrete capable of absorbing automobile exhaust according to example 2, and tested the 28-day compressive strength, the 28-day compressive strength after pavement damage and the self-healing rate thereof after re-curing for 28 days.
As a result, the prepared pavement concrete has 31MPa of compressive strength after 28 days, the compressive strength of the pavement concrete after being maintained for 28 days after being damaged is 26, and the self-healing rate is 83.9 percent, which is greatly superior to that of the comparative example 1.
Therefore, although the raw materials of the invention adopt solid wastes such as steel slag powder and slag powder, the prepared novel self-healing combined pavement concrete capable of absorbing the automobile exhaust has high strength, high durability and low cost, and the self-healing rate is greatly superior to that of the comparative example 1.
Example 4
The novel self-healing pavement concrete capable of absorbing automobile exhaust, which is disclosed by the embodiment 4 of the invention, is prepared by mixing and stirring steel slag powder, cement, self-made capsule particles, steel slag aggregates with different particle sizes and water, wherein the unit volume mass of each component is as follows:
70kg/m of steel slag powder3，
Slag powder 350kg/m3，
50kg/m cement3，
Self-made capsule granule 15kg/m3，
500kg/m of steel slag aggregate with grain diameter of 0-5mm3，
1400kg/m of steel slag aggregate with the grain diameter of 0-10mm3，
200kg/m water3。
In the novel self-healing combined pavement concrete of embodiment 4, the specific surface area of the steel slag is 300m2Per kg, the specific surface area of the slag is 350m2/kg。
In addition, the self-made capsule particles of the invention contain active calcium oxide inside and macromolecular polymer such as paraffin outside, and can be melted at a certain critical temperature.
After the preparation, the inventors tested the physical properties of the novel self-healing combined pavement concrete capable of absorbing automobile exhaust according to example 4, and tested the 28-day compressive strength, the 28-day compressive strength after pavement damage and the self-healing rate thereof after re-curing for 28 days.
As a result, the compressive strength of the prepared pavement concrete in 28 days is 35, the compressive strength of the pavement concrete after being maintained again in 28 days after being damaged is 21, and the self-healing rate is 60 percent, which is greatly superior to that of the comparative example 1.
Therefore, although the raw materials of the invention adopt solid wastes such as steel slag powder and slag powder, the prepared novel self-healing combined pavement concrete capable of absorbing the automobile exhaust has high strength, high durability and low cost, and the self-healing rate is greatly superior to that of the comparative example 1.
Example 5
The novel self-healing pavement concrete capable of absorbing automobile exhaust, which is disclosed by the embodiment 5 of the invention, is prepared by mixing and stirring steel slag powder, cement, self-made capsule particles, steel slag aggregates with different particle sizes and water, wherein the unit volume mass of each component is as follows:
60kg/m of steel slag powder3，
Slag powder 330kg/m3，
40kg/m cement3，
Self-made capsule granules of 25kg/m3，
550kg/m of steel slag aggregate with particle size of 0-5mm3，
1450kg/m of steel slag aggregate with the grain diameter of 0-10mm3，
200kg/m water3，
In addition, in the novel self-healing combined pavement concrete of the embodiment 5, the specific surface area of the steel slag is 350m2Per kg, the specific surface area of the slag is 400m2/kg。
In addition, the self-made capsule particles of the invention contain active calcium oxide inside and macromolecular polymer such as paraffin outside, and can be melted at a certain critical temperature.
After the preparation, the inventors tested the physical properties of the novel self-healing combined road surface concrete capable of absorbing automobile exhaust according to example 5, and tested the 28-day compressive strength, the 28-day compressive strength after pavement damage and the self-healing rate thereof after re-curing for 28 days.
As a result, the prepared pavement concrete had a compressive strength of 37MPa for 28 days, and a compressive strength of 27 after the pavement was damaged and cured again for 28 days, and the self-healing rate was 73%, which was much better than that of comparative example 1.
Therefore, although the raw materials of the invention adopt solid wastes such as steel slag powder and slag powder, the prepared novel self-healing combined pavement concrete capable of absorbing the automobile exhaust has high strength, high durability and low cost, and the self-healing rate is greatly superior to that of the comparative example 1.
Example 6
The novel self-healing pavement concrete capable of absorbing automobile exhaust, which is disclosed by the embodiment 6 of the invention, is prepared by mixing and stirring steel slag powder, cement, self-made capsule particles, steel slag aggregates with different particle sizes and water, wherein the unit volume mass of each component is as follows:
60kg/m of steel slag powder3，
Slag powder 330kg/m3，
50kg/m cement3，
Self-made capsule granules 30kg/m3，
600kg/m of steel slag aggregate with grain diameter of 0-5mm3，
1500kg/m of steel slag aggregate with grain diameter of 0-10mm3，
200kg/m water3。
In addition, in the novel self-healing merging road concrete of the embodiment 6, the specific surface area of the steel slag is 300-400m2Per kg, the specific surface area of the slag is 350-450m2/kg。
In addition, the self-made capsule particles of the invention contain active calcium oxide inside and macromolecular polymer such as paraffin outside, and can be melted at a certain critical temperature.
After the preparation, the inventors tested the physical properties of the novel self-healing combined pavement concrete capable of absorbing automobile exhaust according to example 6, and tested the 28-day compressive strength, the 28-day compressive strength after pavement damage and the self-healing rate thereof after re-curing for 28 days.
As a result, the compressive strength of the prepared pavement concrete is 40MPa after 28 days, the compressive strength of the pavement concrete after being maintained for 28 days after being damaged is 34, and the self-healing rate is 85 percent and is greatly superior to that of the comparative example 1.
Therefore, although the raw materials of the invention adopt solid wastes such as steel slag powder and slag powder, the prepared novel self-healing combined pavement concrete capable of absorbing the automobile exhaust has high strength, high durability and low cost, and the self-healing rate is greatly superior to that of the comparative example 1.
Example 7
The novel self-healing pavement concrete capable of absorbing automobile exhaust, which is disclosed by the embodiment 7 of the invention, is prepared by mixing and stirring steel slag powder, cement, self-made capsule particles, steel slag aggregates with different particle sizes and water, wherein the unit volume mass of each component is as follows:
70kg/m of steel slag powder3，
Slag powder 300kg/m3，
50kg/m cement3，
Self-made capsule granules 30kg/m3，
600kg/m of steel slag aggregate with grain diameter of 0-5mm3，
1500kg/m of steel slag aggregate with grain diameter of 0-10mm3，
200kg/m water3。
In addition, in the novel self-healing combined road surface concrete capable of absorbing automobile exhaust according to embodiment 7, the specific surface area of the steel slag is 300-400m2Per kg, the specific surface area of the slag is 350-450m2/kg。
In addition, the self-made capsule particles of the invention contain active calcium oxide inside and macromolecular polymer such as paraffin outside, and can be melted at a certain critical temperature.
After the preparation, the inventors tested the physical properties of the novel self-healing combined road surface concrete capable of absorbing automobile exhaust according to example 7, and tested the 28-day compressive strength, the 28-day compressive strength after pavement damage and the self-healing rate thereof after re-curing for 28 days.
As a result, the compressive strength of the prepared pavement concrete is 38MPa after 28 days, the compressive strength of the pavement concrete after being maintained for 28 days after being damaged is 32, and the self-healing rate is 84.2 percent and is greatly superior to that of the comparative example 1.
Therefore, although the raw materials of the invention adopt solid wastes such as steel slag powder and slag powder, the prepared novel self-healing combined pavement concrete capable of absorbing the automobile exhaust has high strength, high durability and low cost, and the self-healing rate is greatly superior to that of the comparative example 1.
Compared with the comparative example 1, the novel self-healing pavement concrete disclosed by the invention has the advantages that the physical properties of the concrete are greatly improved under the condition that the self-healing capsule particles are added, particularly the self-healing rate and the compressive strength of the damaged pavement are greatly enhanced, and the slag and steel slag on the consumption place can be used for solid waste, so that the pavement concrete is high in strength, high in durability and low in cost.
The above is only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a can absorb automobile exhaust's novel self-healing way road surface concrete, its composition contains: the steel slag powder, the cement, the self-made capsule particles, steel slag aggregate with the particle size of 0-5mm, steel slag aggregate with the particle size of 0-10mm and water, wherein the unit volume mass of each component is as follows:
the steel slag powder is 50-70kg/m3，
The oreThe slag powder is 300-350kg/m3，
The cement is 30-50kg/m3，
The self-made capsule particles are 15-30kg/m3，
The steel slag aggregate with the particle size of 0-5mm is 500-600kg/m3，
The steel slag aggregate with the grain diameter of 0-10mm is 1400-1500kg/m3，
The water is 190-3。
2. The novel self-healing road surface concrete capable of absorbing automobile exhaust according to claim 1, characterized in that: the mass per unit volume of the steel slag powder is 60kg/m3。
3. The novel self-healing road surface concrete capable of absorbing automobile exhaust according to claim 1, characterized in that: the unit volume mass of the slag powder is 330kg/m3。
4. The novel self-healing road surface concrete capable of absorbing automobile exhaust according to any one of claims 1 to 3, characterized in that: the specific surface area of the steel slag is 300-400m2Per kg, the specific surface area of the slag is 350-450m2/kg。
5. The novel self-healing road surface concrete capable of absorbing automobile exhaust according to any one of claims 1 to 4, wherein:
the self-made capsule particles contain active calcium oxide inside and macromolecular polymer which can be melted at a certain critical temperature outside.
6. The novel self-healing road surface concrete capable of absorbing automobile exhaust according to claim 5, characterized in that: the macromolecular polymer is paraffin.
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| 朱效荣: "《凝土工作性调整》", 31 May 2016, 中国建材工业出版社, pages: 343 * |
| 朱玉霜: "《浮选药剂的化学原理 修订版》", 31 December 1996, 中南工业大学出版社, pages: 317 * |
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