CN111704407A - Concrete doped with waste glass - Google Patents

Concrete doped with waste glass Download PDF

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Publication number
CN111704407A
CN111704407A CN202010499823.9A CN202010499823A CN111704407A CN 111704407 A CN111704407 A CN 111704407A CN 202010499823 A CN202010499823 A CN 202010499823A CN 111704407 A CN111704407 A CN 111704407A
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China
Prior art keywords
parts
waste glass
glass
concrete
particle size
Prior art date
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Pending
Application number
CN202010499823.9A
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Chinese (zh)
Inventor
刘力
刘小艳
李田雨
江波
揭汉铎
刘彦琦
余瑾瑶
李世杰
赵平忠
姜可伟
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Hohai University HHU
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Hohai University HHU
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Priority to CN202010499823.9A priority Critical patent/CN111704407A/en
Publication of CN111704407A publication Critical patent/CN111704407A/en
Pending legal-status Critical Current

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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
    • C04B28/04—Portland cements
    • 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
    • C04B14/06—Quartz; Sand
    • 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
    • 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
    • C04B2111/00008—Obtaining or using nanotechnology related materials
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention discloses waste glass doped concrete which comprises, by weight, 50-70 parts of cement, 10-30 parts of glass powder, 20 parts of fly ash, 0-100 parts of glass fine aggregate, 100-250 parts of natural sand, 200 parts of coarse aggregate and 1-2 parts of nano SiO21 part of additive and 40 parts of water. Nano SiO2Has the characteristics of fine particle size, large specific surface area and the like, and is nano SiO2Can react with Ca (OH)2The C-S-H gel is generated by the reaction, so that the obtained concrete has excellent mechanical properties. The method for preparing the concrete by using the waste glass provided by the invention provides an effective way for greatly reducing the waste glass on the premise of meeting the mechanical property of the concrete, and plays an important role in promoting the development of green and environment-friendly buildings.

Description

Concrete doped with waste glass
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to waste glass doped concrete.
Background
With the rapid development of domestic economy and the acceleration of urbanization process, the yield of waste glass is increasing day by day. The amount of waste glass in cities of China is about 800 million tons, which accounts for 3% -5% of the total amount of municipal domestic waste. A great deal of industrial and domestic waste glass causes serious environmental pollution and resource waste, and causes wide social attention. The waste glass is used as the aggregate of concrete in a large scale, so that an effective way is found for greatly reducing municipal solid waste, and the waste glass plays an important role in promoting the development of green and environment-friendly buildings.
According to the reports, the chemical components of the glass powder contain a large amount of SiO2Has pozzolanic activity, the smaller the particle size of the glass powder, the more remarkable the pozzolanic effect which can promote the hydration of cement, and Ca (OH)2The reaction produced C-S-H gel. But the use of cullet as aggregate also has some detrimental effects. The glass fine aggregate has a smooth surface, so that an interface transition area between the glass fine aggregate and a matrix is weak, so that the bonding force between the glass fine aggregate and the matrix is weak, and the glass fine aggregate can also initiate alkali aggregate reaction, which can cause the mechanical property of concrete to be poor.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the concrete doped with the waste glass, and a certain amount of glass powder, glass fine aggregate and nano SiO are added into the concrete2Can prepare reinforced waste glass concreteThe soil has higher mechanical strength and meets the performance required by the building engineering concrete.
The invention is realized by the following technical scheme:
the waste glass doped concrete is prepared from the following raw materials in parts by weight: 50-70 parts of cement, 10-30 parts of glass powder, 20 parts of fly ash, 0-100 parts of glass fine aggregate, 100-250 parts of natural sand, 200 parts of coarse aggregate and 1-2 parts of nano SiO21 part of additive and 40 parts of water.
Preferably, the cement is P.O 42.5 grade cement.
Preferably, the glass frit has an average particle size of < 0.16 mm.
Preferably, the fly ash is a first grade fly ash.
Preferably, the particle size of the glass fine aggregate is 0.5-3.5 mm.
Preferably, the natural sand is continuous-graded common river sand, and the particle size of the natural sand is 1-4 mm.
Preferably, the coarse aggregate is continuously graded broken stone, and the particle size of the broken stone is 4-20 mm.
Preferably, the nano SiO2The particle size of the particles is 5-10 nm.
Preferably, the additive is a polycarboxylic acid water reducing agent, and the water reducing rate of the additive is 30-40%.
The invention has the following beneficial effects:
1. the invention adopts the glass powder as the auxiliary cementing material to replace cement and adopts the glass fine aggregate to replace natural fine aggregate to prepare the concrete, so that the method not only saves natural resources and reduces the production cost of the concrete, but also effectively recycles a large amount of waste glass and finds an effective way for greatly reducing municipal solid waste.
2. SiO in glass powder2And nano SiO2All have volcanic ash effect, and are mixed into cement-based material, nano SiO2Can react with Ca (OH)2Additional C-S-H gel is generated by reaction, and the nanometer size can enable the gel to be filled in the pores of the cement-based material, so that the matrix is more compact, and the force of the cement-based material is improvedChemical properties.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
The waste glass doped concrete comprises the following raw materials in parts by weight: 50 parts of cement (P.O 42.5 grade cement, the same below), 30 parts of glass powder (average particle size is less than 0.16mm, the same below), 20 parts of first-grade fly ash, 250 parts of natural sand (continuous graded common river sand with particle size of 1-4 mm, the same below), 200 parts of coarse aggregate (continuous graded broken stone with particle size of 4-20 mm, the same below), 1 part of nano SiO2(particle diameter 5-10 nm, the same below), 1 part of an additive (a polycarboxylic acid water reducing agent with water reducing rate of 30-40%, the same below) and 40 parts of water.
Example 2
The waste glass doped concrete comprises the following raw materials in parts by weight: 50 parts of cement, 30 parts of glass powder, 20 parts of first-grade fly ash, 25 parts of glass fine aggregate (the particle size is 0.5-3.5 mm, the same below), 225 parts of natural sand, 200 parts of coarse aggregate and 1 part of nano SiO21 part of additive and 40 parts of water.
Example 3
The waste glass doped concrete comprises the following raw materials in parts by weight: 70 parts of cement, 20 parts of glass powder, 10 parts of first-grade fly ash, 50 parts of glass fine aggregate, 200 parts of natural sand, 200 parts of coarse aggregate and 2 parts of nano SiO21 part of additive and 40 parts of water.
Example 4
The waste glass doped concrete comprises the following raw materials in parts by weight: 70 parts of cement, 10 parts of glass powder, 20 parts of first-grade fly ash, 75 parts of glass fine aggregate, 175 parts of natural sand, 200 parts of coarse aggregate and 2 parts of nano SiO21 part of additive and 40 parts of water.
Example 5
The waste glass doped concrete comprises the following raw materials in parts by weight: 70 parts of cement, 10 parts of glass powder, 20 parts of first-grade fly ash, 100 parts of glass fine aggregate and 150 parts of natural sand, 200 parts of coarse aggregate and 2 parts of nano SiO21 part of additive and 40 parts of water.
Comparative example 1
The common concrete comprises the following raw materials in parts by weight: 80 parts of cement, 20 parts of first-grade fly ash, 200 parts of natural coarse aggregate, 250 parts of fine aggregate, 1 part of water reducing agent and 40 parts of water.
Test example 1
The concrete prepared in the examples 1 to 5 and the concrete prepared in the comparative example 1 are cured for 7d and 28d according to the standard, and then the test piece is taken out from the standard curing room to be subjected to a compressive strength test according to GB/T50081-2002 Standard test method for mechanical properties of common concrete, and the obtained results are shown in the following table 1.
TABLE 1 compressive Strength testing
Figure BDA0002524291260000031
As can be seen from the data in Table 1, the mechanical properties of the waste glass-doped concrete prepared in examples 1-5 are obviously superior to those of the common concrete prepared in comparative example 1, and it can be seen that a certain amount of glass powder, glass fine aggregate and nano SiO are adopted2Is beneficial to improving the mechanical property of the concrete. Therefore, the waste glass doped concrete has better compressive strength while fully utilizing the waste glass.
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 (9)

1. The waste glass doped concrete is characterized by comprising the following raw materials in parts by weight: 50-70 parts of cement, 10-30 parts of glass powder, 20 parts of fly ash, 0-100 parts of glass fine aggregate, 100-250 parts of natural sand, 200 parts of coarse aggregate and 1-2 parts of nano SiO21 part of additiveAnd 40 parts of water.
2. The waste glass doped concrete as recited in claim 1, wherein the cement is P-O42.5 grade cement.
3. The waste glass-doped concrete according to claim 1, wherein the average particle size of the glass powder is less than 0.16 mm.
4. The waste glass doped concrete according to claim 1, wherein the fly ash is primary fly ash.
5. The waste glass doped concrete according to claim 1, wherein the particle size of the glass fine aggregate is 0.5-3.5 mm.
6. The waste glass doped concrete according to claim 1, wherein the natural sand is a continuous-graded common river sand with a particle size of 1-4 mm.
7. The waste glass doped concrete as claimed in claim 1, wherein the coarse aggregate is continuously graded broken stone with a particle size of 4-20 mm.
8. The waste glass doped concrete as claimed in claim 1, wherein the nano SiO is2The particle size of the particles is 5-10 nm.
9. The waste glass doped concrete according to claim 1, wherein the additive is a polycarboxylic acid water reducing agent, and the water reducing rate of the additive is 30-40%.
CN202010499823.9A 2020-06-04 2020-06-04 Concrete doped with waste glass Pending CN111704407A (en)

Priority Applications (1)

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CN202010499823.9A CN111704407A (en) 2020-06-04 2020-06-04 Concrete doped with waste glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010499823.9A CN111704407A (en) 2020-06-04 2020-06-04 Concrete doped with waste glass

Publications (1)

Publication Number Publication Date
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112551990A (en) * 2020-12-31 2021-03-26 福建闽华建材科技发展有限公司 Environment-friendly building adhesive and preparation method thereof
CN114656221A (en) * 2022-04-26 2022-06-24 河北工业大学 High-temperature-resistant concrete containing silica aerogel and waste glass powder
CN114907074A (en) * 2022-05-30 2022-08-16 贵阳中建西部建设有限公司 Concrete prepared from waste glass and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103553491A (en) * 2013-10-16 2014-02-05 北京新奥混凝土集团有限公司 Concrete mainly prepared from waste glass and preparation method thereof
CN103570302A (en) * 2013-11-15 2014-02-12 北京新奥混凝土集团有限公司 Concrete doped with waste glass
CN107352883A (en) * 2017-07-09 2017-11-17 桂林理工大学 Method of modifying as the composite gelled material of raw material and its is prepared using scrap glass
KR101847852B1 (en) * 2017-10-18 2018-04-11 세림종합건설 주식회사 Prevention of deflection and cracks by using spherical recycled glass aggregate Concrete repairing and repairing wastes Composition and method of manufacturing spherical recycled glass aggregate used thereon and deflection and crack prevention using spherical recycled glass aggregate Concrete repairing and repairing Using wax composition Repair and Reinforcement Method of Concrete Structures

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103553491A (en) * 2013-10-16 2014-02-05 北京新奥混凝土集团有限公司 Concrete mainly prepared from waste glass and preparation method thereof
CN103570302A (en) * 2013-11-15 2014-02-12 北京新奥混凝土集团有限公司 Concrete doped with waste glass
CN107352883A (en) * 2017-07-09 2017-11-17 桂林理工大学 Method of modifying as the composite gelled material of raw material and its is prepared using scrap glass
KR101847852B1 (en) * 2017-10-18 2018-04-11 세림종합건설 주식회사 Prevention of deflection and cracks by using spherical recycled glass aggregate Concrete repairing and repairing wastes Composition and method of manufacturing spherical recycled glass aggregate used thereon and deflection and crack prevention using spherical recycled glass aggregate Concrete repairing and repairing Using wax composition Repair and Reinforcement Method of Concrete Structures

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112551990A (en) * 2020-12-31 2021-03-26 福建闽华建材科技发展有限公司 Environment-friendly building adhesive and preparation method thereof
CN114656221A (en) * 2022-04-26 2022-06-24 河北工业大学 High-temperature-resistant concrete containing silica aerogel and waste glass powder
CN114907074A (en) * 2022-05-30 2022-08-16 贵阳中建西部建设有限公司 Concrete prepared from waste glass and preparation method thereof

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Application publication date: 20200925

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