CN103359960A - Soil solidification agent based on two types of industrial slag - Google Patents
Soil solidification agent based on two types of industrial slag Download PDFInfo
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- CN103359960A CN103359960A CN2013103014783A CN201310301478A CN103359960A CN 103359960 A CN103359960 A CN 103359960A CN 2013103014783 A CN2013103014783 A CN 2013103014783A CN 201310301478 A CN201310301478 A CN 201310301478A CN 103359960 A CN103359960 A CN 103359960A
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- electric furnace
- slag
- reduced
- soil
- carbide slag
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention relates to a soil solidification agent based on two types of industrial slag. The soil solidification agent is composed of electric furnace slag powder and calcium carbide slag, wherein the mass of the calcium carbide slag accounts for 20-40% of the mass of the electric furnace slag powder. With the solidification agent, solidification effect can be improved, energy consumption and carbon dioxide discharge of corresponding civil engineering projects can be reduced, pollution of industrial waste stacking to the environment can be reduced, and project cost can be reduced. Compared with prior art, with the agent provided by the invention, on a basis of achieving a same solidification effect, 70-80% of carbon dioxide discharge can be reduced, 50-70% of energy consumption can be reduced, and 20-40% of project cost can be saved.
Description
Technical field
The invention belongs to technical field of civil engineering, is a kind of green solidifying agent for bulk solid civil engineering materials such as curing soil, sandstones.
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Background technology
Chemosetting is the common method of reinforcing the bulk solid civil engineering materials such as soil, sandstone, and it is by solidifying agent and be reinforced physics chemical action between the material (such as soil), forms that intensity is higher, globality, composite curing material that water stability is good.The most frequently used solidifying agent is cement and lime in the civil engineering work.Lime is the longest solidifying agent of applicating history in the civil engineering work, and too low but its shortcoming is the intensity that forms, effect is bad, so topmost solidifying agent is cement in the current civil engineering work.But cement needs high-temperature calcination in production process, and calcining temperature is about 1450 degree, needs to discharge a large amount of carbonic acid gas simultaneously in cement production process, and generating 1 ton of cement need to be to 0.85 ton of carbonic acid gas of airborne release.Studies show that carbonic acid gas is very large to influenced by global warming as main greenhouse gas because the carbonic acid gas of cement industry discharging accounts for about 10% of anthropogenic discharge's carbonic acid gas in the world.China bearing very heavy carbon dioxide discharge-reduction responsibility, and the civil construction field is one of main key areas of Carbon emission as the signatory country of Kyodo Protocol.
Electric furnace phosphoric slag is a kind of industrial residue of yellow phosphorus industry, and when producing yellow phosphorus with electric furnace process, resulting melts take Calucium Silicate powder as main component is electric furnace phosphoric slag, is the electric furnace phosphoric slag powder behind the ball milling, and its main component is CaO and SiO
2, the price of phosphorus powder is about 60% ~ 80% of cement.But the hydration rate of this material and gain in strength are very slow, are difficult to satisfy the user demand of civil engineering work.Phosphorus slag is more unmanageable trade waste, and its stacking had both taken a large amount of soils, again can be to environment.
Carbide slag is the waste residue that produces when producing important industrial chemicals acetylene with calcium carbide, and main component is Ca (OH)
2, CaCO
3, SiO
2, the metals such as sulfide, magnesium and iron inorganics and a small amount of organism such as oxide compound, oxyhydroxide.Carbide slag slurries is major polluting sources, and discharging and store electricity rock ballast often take a large amount of arable lands, the serious calcification in the soil of long-term storage, and second ploughing is very difficult.If the miscarriage meeting causes local ecotope and has a strong impact on.
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Summary of the invention
Technical problem:The purpose of this invention is to provide a kind of solidifying agent based on two kinds of industrial residues, be used for the bulk solid civil engineering materials such as curing soil, sandstone.The present invention can improve solidification effect, reduces energy consumption and Carbon emission in the corresponding civil engineering work, reduces the industrial residue stacking to the pollution of environment, reduces simultaneously construction costs.
Technical scheme:
A kind of soil-solidified-agent based on two kinds of industrial residues: solidifying agent is comprised of electric furnace phosphoric slag powder (satisfying GB JG/T 317-2011) and carbide slag, and the carbide slag dry mass accounts for 20%～40% of electric furnace phosphoric slag dried bean noodles quality.
Compared with prior art, the present invention can reduce by 70%～80% Carbon emission reaching under the prerequisite of identical solidification effect, 50%～70% energy consumption, the construction costs of saving 20%～40%.
The contriver finds (test example in the back will illustrate) through overtesting, and carbide slag can be accelerated the aquation of electric furnace phosphoric slag powder greatly.The present invention mixes the carbide slag of part, electric furnace phosphoric slag powder and carbide slag acting in conjunction and only need both actings in conjunction just can make solidification effect of the present invention can surpass cement in the electric furnace phosphoric slag powder.The contriver finds by test, has the scope an of the best, that is: the carbide slag dry mass account for electric furnace phosphoric slag dried bean noodles quality 20%～40% the time, solidification effect is optimum.In this ratio range, solidification effect can be higher than the cement under the same case.Solidifying agent main component of the present invention is industrial residue, utilize it can reduce in carbonic acid gas from the cement production process to airborne release, reduce the industrial waste stacking to the pollution of environment, greatly reduce simultaneously the cost of solidifying agent, so solidifying agent of the present invention is that a kind of green, low-carbon (LC) and economic environment-friendly type are solidified agent.
Description of drawings
Fig. 1 is the unconfined compression strength of solidified earth.
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Embodiment
Solidifying agent of the present invention is comprised of electric furnace phosphoric slag powder (satisfying GB JG/T 317-2011) and carbide slag, the carbide slag dry mass accounts for 20%～40% of electric furnace phosphoric slag dried bean noodles quality, concrete proportioning can be in scope provided by the invention, adopt required soil to be processed to carry out several groups of different test of Proportional Ratios, determine optimal proportion.During with curing soil of the present invention, according to the concrete engineering needs, the solidifying agent dry mass accounts for 5% ~ 40% of soil dry quality.
Test example 1
The object of required curing is Lianyun Harbour weak soil in the present embodiment, and liquid limit is 74%, and water content is 80%, and the electric furnace phosphoric slag powder meets GB JG/T 317-2011 requirement, and its volume (electric furnace phosphoric slag powder and dry ground mass ratio) is 20%, 30%.Adopt 2 kinds of solidifying agent: (1) electric furnace phosphoric slag powder and carbide slag, wherein the carbide slag dry mass dry mass ratio that accounts for GBFS is respectively 10%, 20%, 30%, 40%; (2) Nanjing rain court cards 325 grade composite silicate cement, cement mixing content (cement and dry ground mass ratio) is 20%, 30%.With above-mentioned solidifying agent and soil after the laboratory stirs, pour into diameter 5cm, highly be the Standard Module of 10cm, slightly vibrate, closely knit, then it is 20 degrees centigrade in temperature, relative humidity is 98% curing room maintenance to 90 day, the unconfined compression strength of test sample, and same proportioning is made three samples, get the mean value of its test intensity as a result of, see Fig. 1.The result shows, the intensity of electric furnace phosphoric slag powder solidified earth is along with the ratio difference of mixing carbide slag presents regular variation: increasing rapidly then first, amplification reduces gradually, have the scope of mixing of an optimum, this scope is roughly: the carbide slag dry mass accounts for 20%～40% of electric furnace phosphoric slag dried bean noodles quality.Fig. 1 also shows, the electric furnace phosphoric slag powder of part proportioning and the intensity of carbide slag solidified earth are higher than cement solidification soil, are up to 1.6 times, and this illustrates that properly mixed Novel curing agent effect is higher than conventional cement.
Embodiment 1
A kind of soil-solidified-agent based on two kinds of industrial residues, solidifying agent is comprised of electric furnace phosphoric slag powder and carbide slag, and the ratio that the carbide slag dry mass accounts for the electric furnace phosphoric slag dry mass can be 20%, 30% or 40%.
Claims (1)
1. soil-solidified-agent based on two kinds of industrial residues, it is characterized in that: solidifying agent is comprised of electric furnace phosphoric slag powder and carbide slag, and the carbide slag dry mass accounts for 20%～40% of electric furnace phosphoric slag dried bean noodles quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103014783A CN103359960A (en) | 2013-07-18 | 2013-07-18 | Soil solidification agent based on two types of industrial slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103014783A CN103359960A (en) | 2013-07-18 | 2013-07-18 | Soil solidification agent based on two types of industrial slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103359960A true CN103359960A (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2013103014783A Pending CN103359960A (en) | 2013-07-18 | 2013-07-18 | Soil solidification agent based on two types of industrial slag |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442465A (en) * | 2002-03-04 | 2003-09-17 | 北京天筑杰特种建筑材料技术开发有限公司 | Soil firming agent |
| CN102249609A (en) * | 2011-04-29 | 2011-11-23 | 昆明理工大学 | Arsenic-containing waste slag solidified body and preparation method thereof |
| CN102557494A (en) * | 2011-12-20 | 2012-07-11 | 东南大学 | Industrial-waste-based environment-friendly curing agent |
| CN102976586A (en) * | 2012-12-19 | 2013-03-20 | 天津生态城环保有限公司 | Silt curing agent containing industrial waste carbide slag and curing method |
-
2013
- 2013-07-18 CN CN2013103014783A patent/CN103359960A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442465A (en) * | 2002-03-04 | 2003-09-17 | 北京天筑杰特种建筑材料技术开发有限公司 | Soil firming agent |
| CN102249609A (en) * | 2011-04-29 | 2011-11-23 | 昆明理工大学 | Arsenic-containing waste slag solidified body and preparation method thereof |
| CN102557494A (en) * | 2011-12-20 | 2012-07-11 | 东南大学 | Industrial-waste-based environment-friendly curing agent |
| CN102976586A (en) * | 2012-12-19 | 2013-03-20 | 天津生态城环保有限公司 | Silt curing agent containing industrial waste carbide slag and curing method |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20131023 |