CN111807792A - Quartz glass powder plastic concrete and preparation method thereof - Google Patents
Quartz glass powder plastic concrete and preparation method thereof Download PDFInfo
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- CN111807792A CN111807792A CN202010744181.4A CN202010744181A CN111807792A CN 111807792 A CN111807792 A CN 111807792A CN 202010744181 A CN202010744181 A CN 202010744181A CN 111807792 A CN111807792 A CN 111807792A
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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
- C04B28/04—Portland 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/22—Glass ; Devitrified glass
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
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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
- C04B28/08—Slag 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
- 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
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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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides quartz glass powder plastic concrete and a preparation method thereof, wherein the raw materials of the quartz glass powder plastic concrete comprise water, a cementing material, coarse aggregates, sand and a water reducing agent, wherein the raw materials of the cementing material comprise cement, an admixture, bentonite and/or clay and quartz glass powder; the quartz glass powder plastic concrete comprises the following mixing ratio parameters: the water-to-glue ratio is 0.5-2.0, the sand rate is 40-100%, and the unit water consumption is 220kg/m3～350kg/m3(ii) a The dosage of the coarse aggregate is 0-1200 kg/m3(ii) a The mixing amount of the water reducing agent is 0-2.5% of the mass of the cementing material;the blending amount of the admixture is 0-50% of the mass of the cementing material; the mixing amount of the bentonite and/or the clay is 20 to 80 percent of the mass of the cementing material; the mixing amount of the quartz glass powder is 0.5 to 10 percent of the mass of the cementing material. According to the invention, the quartz glass powder is added into the plastic concrete, so that the anti-seepage performance of the plastic concrete is improved.
Description
Technical Field
The invention belongs to the technical field of hydraulic engineering, and particularly relates to quartz glass powder plastic concrete and a preparation method thereof.
Background
The plastic concrete is a flexible concrete formed by replacing partial cementing materials with bentonite and clay, has the characteristics of low elastic modulus and high plasticity, can better adapt to the stress change of a foundation, greatly reduces the internal stress of a wall body, and avoids cracking of the wall body. For example CN110818351A with 286 parts of gelling material; aggregate 1695 parts; 0.419 part of water reducing agent; 254 parts of water is used for preparing plastic concrete, the aggregate sand rate is 45%, and the cementing material comprises the following raw materials: 86-114 parts of cement; 72-100 parts of fly ash; 86-114 parts of bentonite, and the obtained plastic concrete has proper strength, elastic modulus and permeability resistance. However, the barrier performance of the plastic concrete still needs to be improved at present.
The most important mode of building garbage disposal is landfill, and low-lying lands, wastelands and quarry mine mouths are selected as landfill sites. The landfill site occupies a large amount of land, destroys the ecological environment, causes personal injury accidents and harms public safety. Due to the increasing shortage of land resources, the site selection of the refuse landfill is more and more difficult. Meanwhile, a large amount of glass waste is generated along with the dismantling of a large amount of concrete buildings (structures), and a large amount of glass waste is also generated in the glass processing process. The glass waste is properly treated and recycled, so that the waste is changed into valuable, the reduction of the garbage is realized, the land and the resources are saved, and great social and economic values are created.
Disclosure of Invention
It is a first object of the present invention to provide a silica glass powder plastic concrete having excellent barrier properties.
The second purpose of the invention is to provide a preparation method of quartz glass powder plastic concrete.
The inventor finds that after the plastic concrete is hardened, the quartz glass can slowly react with the cement by alkali-silicate to generate silicic acid gel with water absorption swelling property, and pores in the plastic concrete can be gradually blocked, so that the seepage-proofing property of the plastic concrete is improved.
In order to achieve the purpose, the invention adopts the technical scheme that:
a quartz glass powder plastic concrete, the raw materials of the quartz glass powder plastic concrete comprise water, a cementing material, coarse aggregates, sand and a water reducing agent, wherein the raw materials of the cementing material comprise cement, admixture, bentonite and/or clay, and quartz glass powder;
the quartz glass powder plastic concrete comprises the following mixing ratio parameters: the water-to-glue ratio is 0.5-2.0, the sand rate is 40-100%, and the unit water consumption is 220kg/m3～350kg/m3；
The dosage of the coarse aggregate is 0-1200 kg/m3；
The mixing amount of the water reducing agent is 0-2.5% of the mass of the cementing material;
the blending amount of the admixture is 0-50% of the mass of the cementing material;
the mixing amount of the bentonite and/or the clay is 20 to 80 percent of the mass of the cementing material;
the mixing amount of the quartz glass powder is 0.5 to 10 percent of the mass of the cementing material.
Compared with the prior art, the invention adds the quartz glass powder into the plastic concrete, scientifically controls the dosage of the quartz glass powder to be 0.5-10% of the mass of the cementing material, gradually generates the silicic acid gel after the plastic concrete is condensed and hardened by utilizing the slow alkali-silicate reaction between the quartz glass powder and the cement, the silicic acid gel absorbs water and swells, blocks the capillary pores of the plastic concrete, cuts off the internal water seepage channel, and obviously enhances the anti-seepage effect of the plastic concrete. Meanwhile, the alkali-silicate reaction between the quartz glass powder and the cement is a slow process, and the reaction gradually proceeds in a dispersed point shape after the plastic concrete is solidified and hardened, so that a slight water absorption swelling effect is generated in the whole range of the plastic concrete, and an ineffective swelling effect is prevented from being generated before the plastic concrete is solidified and hardened to reduce the anti-seepage effect; meanwhile, the cracking damage of the hardened plastic concrete caused by uneven expansion and excessive expansion can be avoided.
The particle size of the quartz glass powder should be not larger than 60 mesh.
The plasticity index of the clay is not less than 17, and the clay content is not less than 30%.
The particle size of the clay is not more than 0.16 mm.
The bentonite is at least one selected from calcium bentonite and sodium bentonite.
The particle size of the coarse aggregate is 5-40 mm; preferably, the size fraction of the coarse aggregate comprises 5-20 mm, 5-25 mm, 5-31.5 mm, 5-40 mm, 16-31.5 mm and 20-40 mm.
The coarse aggregate is at least one of crushed stone and gravel.
The cement is selected from at least one of portland cement, ordinary portland cement, portland slag cement, portland fly ash cement, pozzolanic portland cement, moderate-heat portland cement, low-heat portland cement and composite portland cement; the cement strength grade is any one of 32.5, 32.5R, 42.5R, 52.5 and 52.5R.
The sand is selected from at least one of river sand, mountain sand and machine-made sand.
The admixture is selected from at least one of fly ash, silica fume, slag powder, phosphorous slag powder and limestone powder.
The water reducing agent is at least one selected from lignosulfonate water reducing agents, naphthalene water reducing agents, melamine water reducing agents, sulfamate water reducing agents, fatty acid water reducing agents and polycarboxylic acid water reducing agents.
The water is one of natural water, tap water and reclaimed water.
A preparation method of quartz glass powder plastic concrete comprises the following steps: the concrete is prepared by adding water into coarse aggregate, sand, admixture, water reducing agent, bentonite and/or clay, quartz glass powder and cement and mixing (in actual construction, the quartz glass powder with the same volume can be used for replacing the sand).
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the quartz glass powder is added into the plastic concrete, so that the anti-seepage performance of the plastic concrete is improved.
(2) The quartz glass powder used in the invention can be directly waste glass powder in construction waste, so that the harmless, quantitative reduction and resource utilization of the construction waste are realized, the resources are saved, and the ecological environment is protected.
(3) The quartz glass powder can replace part of sand, thereby saving river sand and reducing cost.
Detailed Description
The technical solution of the present invention is further described below with reference to specific examples.
The invention provides quartz glass powder plastic concrete, and the raw materials and the mixing ratio parameters are shown in table 1.
TABLE 1 Quartz glass powder plastic concrete raw material and mixing ratio parameter
In table 1, the water-cement ratio is the mass ratio of water to cement.
The water is reclaimed water.
The cementing material consists of cement, admixture, bentonite, clay and quartz glass powder, wherein the cement is Portland cement with the strength grade of 42.5R; the admixture is fly ash, slag powder and phosphorous slag powder; the bentonite is calcium bentonite; the plasticity index of the clay is 15.7, the content of clay particles is 37.8 percent, and the particle size is not more than 0.16 mm; the quartz glass powder is waste glass in construction waste, and the particle size is not more than 60 meshes.
The sand rate is the proportion of sand in the aggregate, the aggregate comprises coarse aggregate and sand, the coarse aggregate is selected from macadam, and the size fraction of the macadam is one of 5-20 mm, 5-25 mm, 5-31.5 mm, 5-40 mm, 16-31.5 mm and 20-40 mm; the sand is river sand.
The water reducing agent is a naphthalene water reducing agent.
The method for preparing the silica glass powder plastic concrete of embodiments 1 to 6 includes the steps of:
(1) classifying the construction waste to obtain classified quartz glass waste; cleaning impurities in the quartz glass waste, cleaning, airing, crushing, and sieving with a 60-mesh sieve to obtain quartz glass powder with the particle size not larger than 60 meshes.
(2) The clay is air dried and sieved to a particle size of not more than 0.16 mm.
(3) According to the proportion in the table 1, the coarse aggregate, the sand, the admixture, the water reducing agent, the bentonite and/or the clay, the quartz glass powder and the cement are mixed by adding water (in actual construction, the quartz glass powder with the same volume can be used for replacing the sand).
For comparison, comparative examples 1 to 6 are provided below.
Among them, comparative example 1 is different from example 1 only in that: there is no quartz glass powder.
The only difference between comparative example 2 and example 1 is that: the content of the quartz glass powder is 0.2 percent of the mass of the cementing material.
The only difference between comparative example 3 and example 1 is that: the content of the quartz glass powder is 15 percent of the mass of the cementing material.
Comparative example 4 differs from example 1 only in that: the particle size of the quartz glass powder is larger than 60 meshes, and the specific particle size is 200 meshes.
The only difference between comparative example 5 and example 5 is that: the plasticity index of the clay is less than 17, and the clay content is less than 30%. Specifically, the plasticity index of the clay is 12 and the clay content is 15%.
The only difference between comparative example 6 and example 5 is that: the clay has a particle size of more than 0.16mm, specifically 0.65 mm.
The performance test was performed on the silica glass powder plastic concrete of examples 1 to 6 and comparative examples 1 to 6, and the results are shown in table 2 below.
TABLE 2 test results of plastic concrete properties of quartz glass powder
According to the test results, the quartz glass powder plastic concrete has the advantages of good workability, higher compressive strength, low elastic modulus, good flexibility and strong impermeability, and the permeability coefficient of the quartz glass powder plastic concrete is further reduced and the impermeability is enhanced along with the increase of time.
In contrast, in the case where the silica glass powder was omitted (comparative example 1), or the amount of the silica glass powder added was too low (comparative example 2), the workability and compressive strength of the plastic concrete did not change significantly, but the elastic modulus and permeability coefficient increased significantly; when the amount of the silica glass powder is excessively large (comparative example 3), although the obtained plastic concrete has good anti-permeability capability at an early stage, the permeability coefficient of the plastic concrete increases with time, and the anti-permeability capability is reduced. When the quartz glass powder is used in an inappropriate particle size (comparative example 4), the later-stage impermeability of the plastic concrete is also significantly reduced. When improper clay was used (comparative examples 5 and 6), the impermeability of the plastic concrete was significantly reduced.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The quartz glass powder plastic concrete is characterized in that: the raw materials of the quartz glass powder plastic concrete comprise water, a cementing material, coarse aggregates, sand and a water reducing agent, wherein the raw materials of the cementing material comprise cement, an admixture, bentonite and/or clay and quartz glass powder;
the quartz glass powder plastic concrete comprises the following mixing ratio parameters: the water-to-glue ratio is 0.5-2.0, the sand rate is 40-100%, and the unit water consumption is 220kg/m3～350kg/m3；
The dosage of the coarse aggregate is 0-1200 kg/m3；
The mixing amount of the water reducing agent is 0-2.5% of the mass of the cementing material;
the blending amount of the admixture is 0-50% of the mass of the cementing material;
the mixing amount of the bentonite and/or the clay is 20 to 80 percent of the mass of the cementing material;
the mixing amount of the quartz glass powder is 0.5 to 10 percent of the mass of the cementing material.
2. The silica glass powder plastic concrete according to claim 1, wherein: the particle size of the quartz glass powder is not more than 60 meshes.
3. The silica glass powder plastic concrete according to claim 1, wherein: the plasticity index of the clay is not less than 17, and the clay content is not less than 30%.
4. The silica glass powder plastic concrete according to claim 1, wherein: the particle size of the clay is not more than 0.16 mm.
5. The silica glass powder plastic concrete according to claim 1, wherein: the bentonite is at least one selected from calcium bentonite and sodium bentonite.
6. The silica glass powder plastic concrete according to claim 1, wherein: the particle size of the coarse aggregate is 5-40 mm.
7. The silica glass powder plastic concrete according to claim 6, wherein: the size fraction of the coarse aggregate comprises 5-20 mm, 5-25 mm, 5-31.5 mm, 5-40 mm, 16-31.5 mm and 20-40 mm.
8. The silica glass powder plastic concrete according to claim 1, wherein: the cement is selected from at least one of portland cement, ordinary portland cement, portland slag cement, portland fly ash cement, pozzolanic portland cement, moderate-heat portland cement, low-heat portland cement and composite portland cement.
9. The silica glass powder plastic concrete according to claim 1, wherein: the admixture is selected from at least one of fly ash, silica fume, slag powder, phosphorous slag powder and limestone powder.
10. A method for preparing a silica glass powder plastic concrete according to any one of claims 1 to 9, characterized in that: the method comprises the following steps: and adding water into the coarse aggregate, sand, an admixture, a water reducing agent, bentonite and/or clay, quartz glass powder and cement, and mixing to obtain the cement.
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| CN202010744181.4A CN111807792A (en) | 2020-07-29 | 2020-07-29 | Quartz glass powder plastic concrete and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112279591A (en) * | 2020-11-02 | 2021-01-29 | 佛山市东鹏陶瓷发展有限公司 | Cement-based concrete plate with high early strength and preparation method thereof |
| CN112321211A (en) * | 2020-11-02 | 2021-02-05 | 佛山市东鹏陶瓷发展有限公司 | Cement-based concrete plate adopting low-alkalinity cement and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110818351A (en) * | 2019-11-19 | 2020-02-21 | 中铁大桥局第七工程有限公司 | Plastic concrete for runner cushion layer and preparation method thereof |
-
2020
- 2020-07-29 CN CN202010744181.4A patent/CN111807792A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110818351A (en) * | 2019-11-19 | 2020-02-21 | 中铁大桥局第七工程有限公司 | Plastic concrete for runner cushion layer and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 柯国军等: "废玻璃粉活性特征和活性机理研究", 《中国粉体技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112279591A (en) * | 2020-11-02 | 2021-01-29 | 佛山市东鹏陶瓷发展有限公司 | Cement-based concrete plate with high early strength and preparation method thereof |
| CN112321211A (en) * | 2020-11-02 | 2021-02-05 | 佛山市东鹏陶瓷发展有限公司 | Cement-based concrete plate adopting low-alkalinity cement and preparation method thereof |
| CN112321211B (en) * | 2020-11-02 | 2022-06-03 | 佛山市东鹏陶瓷发展有限公司 | Cement-based concrete plate adopting low-alkalinity cement and preparation method thereof |
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Application publication date: 20201023 |