CN113024176A - Steel slag concrete - Google Patents
Steel slag concrete Download PDFInfo
- Publication number
- CN113024176A CN113024176A CN201911249199.0A CN201911249199A CN113024176A CN 113024176 A CN113024176 A CN 113024176A CN 201911249199 A CN201911249199 A CN 201911249199A CN 113024176 A CN113024176 A CN 113024176A
- Authority
- CN
- China
- Prior art keywords
- parts
- steel slag
- concrete
- aggregate
- water
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 30
- 239000010959 steel Substances 0.000 title claims abstract description 30
- 239000002893 slag Substances 0.000 title claims abstract description 29
- 239000004567 concrete Substances 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004568 cement Substances 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- 239000004575 stone Substances 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 239000010881 fly ash Substances 0.000 claims abstract description 4
- 239000004576 sand Substances 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims description 15
- 239000002699 waste material Substances 0.000 claims description 14
- 238000010276 construction Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene-acid Natural products C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 3
- 125000001624 naphthyl group Chemical group 0.000 claims description 3
- 239000008030 superplasticizer Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003334 potential effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 1
- 235000019976 tricalcium silicate Nutrition 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses steel slag concrete which is prepared from the following raw materials in parts by weight: 420 parts of cement, 200 parts of water, 700 parts of recycled aggregate, 5 parts of water reducing agent, 500 parts of sand, 45 parts of fly ash, 190 parts of broken stone and 360 parts of steel slag. The steel slag and the crushed pebbles are added in a mixing manner, so that complementarity can be realized, and the effect of improving the slump of the recycled aggregate concrete can be realized under a reasonable mixing proportion.
Description
Technical Field
The invention belongs to the technical field of building material preparation, and particularly relates to steel slag concrete.
Background
In recent years, with the continuous development of modern urbanization construction in China, a considerable amount of construction waste is generated, and the construction waste treatment needs to build a large-scale waste treatment plant and has high treatment cost. If the construction waste can be reasonably reused, the difficulty of treatment of the construction waste can be reduced, the waste of energy can be reduced, social and economic benefits can be generated, and the method belongs to a sustainable development road.
The steel slag is a byproduct generated in the steel-making process and belongs to industrial waste. Research shows that the discharge amount of the steel slag accounts for 10 to 15 percent of the total output of the steel. China is the first major country of steel making in the world, but the utilization rate of the steel slag is very low, and is only about 10 percent. The steel slag contains tricalcium silicate and dicalcium silicate, the potential activity of the steel slag can be improved after pulverization, and the steel slag can be used as aggregate to be added into cement powder or concrete for use. During the reaction at the contact interface between the steel slag and the cement, the steel slag does not consume the calcium hydroxide in the cement, and on the contrary, a certain amount of calcium hydroxide is generated, which is harmful to the structure of the concrete, because the fine structure of the interface transition zone in the concrete structure becomes looser due to the strong calcium oxide, which is unfavorable to the strength of the concrete.
Disclosure of Invention
The invention aims to provide steel slag concrete prepared by using waste steel slag and construction waste as raw materials.
The steel slag concrete is prepared from the following raw materials in parts by weight: 420 parts of cement, 200 parts of water, 700 parts of recycled aggregate, 5 parts of water reducing agent, 500 parts of sand, 45 parts of fly ash, 190 parts of broken stone and 360 parts of steel slag.
The recycled aggregate is prepared by the following method: firstly, removing other impurities in the construction waste, simply crushing the waste concrete by using a crusher to form coarse aggregate with larger particles, and then crushing the aggregate with larger particles into fine aggregate with smaller particle size by using a jaw crusher, wherein the particle size of the obtained fine aggregate is less than 25 mm.
The water cement ratio of the concrete is 0.43.
The water reducing agent is a naphthalene-based high-efficiency water reducing agent.
The broken stones are broken cobblestones with the particle size smaller than 2 mm.
The invention has the beneficial effects that: the concrete of the invention adopts the steel slag as the coarse aggregate, and compared with common macadam, the surface is rougher, so the addition of the steel slag can increase the water consumption, increase the friction of concrete mixture and reduce the slump to a certain extent. Therefore, for the slump of the recycled concrete, the mixing addition of the steel slag and the crushed pebbles has complementarity, and the effect of improving the slump of the recycled aggregate concrete can be achieved under a reasonable mixing ratio.
Detailed Description
The present invention is further illustrated by the following specific examples.
Example 1
The steel slag concrete is prepared from the following raw materials in parts by weight: 420 parts of cement, 200 parts of water, 700 parts of recycled aggregate, 5 parts of water reducing agent, 500 parts of sand, 45 parts of fly ash, 190 parts of broken stone and 360 parts of steel slag.
The recycled aggregate is prepared by the following method: firstly, removing other impurities in the construction waste, simply crushing the waste concrete by using a crusher to form coarse aggregate with larger particles, and then crushing the aggregate with larger particles into fine aggregate with smaller particle size by using a jaw crusher, wherein the particle size of the obtained fine aggregate is less than 25 mm.
The water cement ratio of the concrete is 0.43.
The water reducing agent is a naphthalene-based high-efficiency water reducing agent.
The broken stones are broken cobblestones with the particle size smaller than 2 mm.
Claims (5)
1. The steel slag concrete is characterized by being prepared from the following raw materials: 420 parts of cement, 200 parts of water, 700 parts of recycled aggregate, 5 parts of water reducing agent, 500 parts of sand, 45 parts of fly ash, 190 parts of broken stone and 360 parts of steel slag.
2. The steel slag concrete according to claim 1, wherein the recycled aggregate is prepared by the following method: firstly, removing other impurities in the construction waste, simply crushing the waste concrete by using a crusher to form coarse aggregate with larger particles, and then crushing the aggregate with larger particles into fine aggregate with smaller particle size by using a jaw crusher, wherein the particle size of the obtained fine aggregate is less than 25 mm.
3. The steel slag concrete according to claim 1, wherein the water cement ratio of the concrete is 0.43.
4. The steel slag concrete according to claim 1, wherein the water reducing agent is a naphthalene based superplasticizer.
5. The steel slag concrete according to claim 1, wherein the crushed stones are crushed cobblestones having a particle size of less than 2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911249199.0A CN113024176A (en) | 2019-12-09 | 2019-12-09 | Steel slag concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911249199.0A CN113024176A (en) | 2019-12-09 | 2019-12-09 | Steel slag concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113024176A true CN113024176A (en) | 2021-06-25 |
Family
ID=76450946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911249199.0A Pending CN113024176A (en) | 2019-12-09 | 2019-12-09 | Steel slag concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113024176A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114735979A (en) * | 2022-03-31 | 2022-07-12 | 陈倩倩 | Highway concrete formula and processing technology |
-
2019
- 2019-12-09 CN CN201911249199.0A patent/CN113024176A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114735979A (en) * | 2022-03-31 | 2022-07-12 | 陈倩倩 | Highway concrete formula and processing technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210625 |
|
| WD01 | Invention patent application deemed withdrawn after publication |