CN109111179A - It is a kind of for building the green cement sill of 3D printing - Google Patents

It is a kind of for building the green cement sill of 3D printing Download PDF

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Publication number
CN109111179A
CN109111179A CN201811320939.0A CN201811320939A CN109111179A CN 109111179 A CN109111179 A CN 109111179A CN 201811320939 A CN201811320939 A CN 201811320939A CN 109111179 A CN109111179 A CN 109111179A
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CN
China
Prior art keywords
building
printing
water
gypsum
cement
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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
Application number
CN201811320939.0A
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Chinese (zh)
Inventor
高丹盈
孟阳
杨林
李琳
汤寄予
吕铭艳
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Zhengzhou University
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Zhengzhou University
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Filing date
Publication date
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Priority to CN201811320939.0A priority Critical patent/CN109111179A/en
Publication of CN109111179A publication Critical patent/CN109111179A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • C04B28/06Aluminous cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions 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 calcium sulfate cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions 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 calcium sulfate cements
    • C04B28/142Compositions 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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions 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 calcium sulfate cements
    • C04B28/142Compositions 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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
    • C04B28/144Compositions 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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions 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 calcium sulfate cements
    • C04B28/145Calcium sulfate hemi-hydrate with a specific crystal form
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00017Aspects relating to the protection of the environment
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034Physico-chemical characteristics of the mixtures
    • C04B2111/00181Mixtures specially adapted for three-dimensional printing (3DP), stereo-lithography or prototyping
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The present invention provides a kind of for building the green cement sill of 3D printing, is mixed in a certain ratio, is stirred to get by sulphate aluminium cement, mineral admixture, gypsum, reclaimed sand, thickener, retarder, water-reducing agent, water etc..The technology that the invention provides consumes building castoff and industrial by-products in large quantities, reduces production cost, and is made and has excellent performance, meets the cement-based material of building 3D printing demand.

Description

It is a kind of for building the green cement sill of 3D printing
Technical field
The present invention relates to new manufacture fields, while being related to solid waste resource recovery and utilizing field, and in particular to It is prepared using building waste a kind of for building the green construction material of 3D printing.
Background technique
Currently, Urbanization in China is accelerated, enter on the take-off line of Urbanization.With the expansion of city size The requirement of big and new era appearance of city, the removal of large amount of building has been inevitable, to bring a large amount of building waste, is given up Abandoning concrete is exactly one of them.For discarded concrete, current recycling is extremely limited, and most important processing means It is landfill and stacking.Land resource increasingly in short supply has not only been occupied in the accumulation of a large amount of building wastes, but also seriously endangers periphery Environment, bring huge pressure to social development and National Environmental Protection Agency.It is well known that the production of construction material is in the useless side of benefit There are huge potentiality in face, can largely consume waste, turn waste into wealth.Therefore, building waste is re-used for construction material Production have huge potentiality.
In recent years, 3D printing technique is developed and applies in multiple fields, and 3D printing building will also become construction industry New production model.3D printing building obviously be unable to do without " ink ", i.e. construction material, and proposes to the performance of construction material Higher requirement, such as condensation setting rate is fast, cohesiveness is strong.Sulphate aluminium cement has fast solidifying as a kind of special cement Early strong feature, is able to satisfy the requirement of 3D printing, but its popularization and application are limited because price is higher.
The present invention is the production cost for reducing 3D printing construction material, substitutes a part of water using mineral admixture first Mud, furthermore using reclaimed sand substitution natural sand or Machine-made Sand, manufacturing cost is not only reduced, and largely consume waste, With good economic efficiency and social benefit.
Summary of the invention
The purpose of the present invention is to provide a kind of for building the green cement sill of 3D printing, reduces production cost, Building waste is consumed in large quantities, meets the needs of market is to 3D printing construction material.
In order to solve the above technical problems, technical scheme is as follows:
It is a kind of for building the green cement sill of 3D printing, it is composed of the following components according to mass percent:
Sulphate aluminium cement 20 ~ 40%,
Mineral admixture 0 ~ 20%,
Gypsum 0 ~ 10%,
Reclaimed sand 20 ~ 50%,
Thickener 0 ~ 2%,
Retarder 0 ~ 0.2%,
Water-reducing agent 0 ~ 2%,
Water 9 ~ 20%.
The cement is sulphate aluminium cement, has the characteristics that the energy conservations, emission reduction such as firing temperature is low, carbon emission amount is small.
The mineral admixture refers to that slag, flyash, silicon ash, metakaolin etc. have pozzolanic activity or potential hydraulic The complementary cementitious material of property.
The gypsum refer to the natural gypsum, desulfurized gypsum, ardealite or other industry by-product gypsums or its dewatered half Water gypsum.
The reclaimed sand be it is broken by building waste discarded concrete, screening obtains, maximum particle diameter is no more than 5mm.
The thickener is the additive with thickening function such as methylcellulose, carboxymethyl cellulose or cellulose ether.
The retarder, which refers to, extends cement, the additive of gypsum setting time.
The water-reducing agent refers to polycarboxylic acids, how the additive with diminishing function such as to be.
Preparation method the following steps are included:
(1) each raw material is weighed according to the proportion, and water-reducing agent, retarder is soluble in water, stir evenly, for use;
(2) by cement, mineral admixture, gypsum, reclaimed sand, thickener dry-mixed 1 ~ 2 minute in blender;
(3) water solution mixture in step (1) is poured into dry blend and is again stirring for 2 minutes, can take the dish out of the pot slurry transmission To 3D printing system for printing building.
Beneficial effects of the present invention are that (1) mixes the industrial by-products such as mineral admixture in large quantities, reduce manufacturing cost, and Reliable guarantee is provided for the sustainable development of enterprise;(2) building waste is consumed, environmental pollution is reduced, discharges a large amount of soils, benefit In offspring descendants, there is good environmental benefit and long-range social benefit;(3) turn waste into wealth, produce satisfaction building 3D and beat The construction material of print.
Specific embodiment
Example given below but is not to be construed as to the scope of the present invention to further explanation of the invention Limitation, some nonessential improvement and tune that person skilled in art makes the present invention according to the content of aforementioned present invention It is whole, still fall within protection scope of the present invention.
Embodiment 1
Raw material ratio: sulphate aluminium cement 33%, mineral admixture 0%, gypsum 0%, reclaimed sand 50%, thickener 1.0%, slow setting Agent 0%, water-reducing agent 1.0%, water 15%.
Performance: cohesiveness is good;Setting time: 12 minutes (initial set)/18 minute (final set);1 day compression strength: 33.2MPa;28 days compression strength: 46.3MPa.
Embodiment 2
Raw material ratio: sulphate aluminium cement 25%, mineral admixture 10%, gypsum 0%, reclaimed sand 47%, thickener 1.5%, slow setting Agent 0%, water-reducing agent 0.5%, water 16%.
Performance: cohesiveness is good;Setting time: 14 minutes (initial set)/19 minute (final set);1 day compression strength: 26.3MPa;28 days compression strength: 43.3MPa.
Embodiment 3
Raw material ratio: sulphate aluminium cement 20%, mineral admixture 15%, gypsum 0%, reclaimed sand 50%, thickener 2.0%, slow setting Agent 0%, water-reducing agent 1.0%, water 12%.
Performance: cohesiveness is good;Setting time: 14 minutes (initial set)/20 minute (final set);1 day compression strength: 30.8MPa;28 days compression strength: 48.4MPa;.
Embodiment 4
Raw material ratio: sulphate aluminium cement 20%, mineral admixture 18%, gypsum 0%, reclaimed sand 45%, thickener 1.0%, slow setting Agent 0%, water-reducing agent 1.0%, water 15%.
Performance: cohesiveness is good;Setting time: 16 minutes (initial set)/21 minute (final set);1 day compression strength: 26.7MPa;28 days compression strength: 42.6MPa.
Embodiment 5
Raw material ratio: sulphate aluminium cement 25%, mineral admixture 10%, the natural gypsum 5%, reclaimed sand 45%, thickener 0.5%, Retarder 0%, water-reducing agent 1.5%, water 13%.
Performance: cohesiveness is good;Setting time: 15 minutes (initial set)/18 minute (final set);3 days compression strength: 35.7MPa;28 days compression strength: 48.4MPa.
Embodiment 6
Raw material ratio: sulphate aluminium cement 25%, ardealite 5%, reclaimed sand 45%, thickener 0.5%, delays mineral admixture 10% Solidifying agent 0%, water-reducing agent 1.5%, water 13%.
Performance: cohesiveness is good;Setting time: 16 minutes (initial set)/22 minute (final set);3 days compression strength: 29.7MPa;28 days compression strength: 47.3MPa.
Embodiment 7
Raw material ratio: sulphate aluminium cement 20%, mineral admixture 15%, desulfurized gypsum 5%, reclaimed sand 45%, thickener 0.5%, Retarder 0%, water-reducing agent 1.5%, water 13%.
Performance: cohesiveness is good;Setting time: 16 minutes (initial set)/22 minute (final set);3 days compression strength: 26.7MPa;28 days compression strength: 44.7MPa.
Embodiment 8
Raw material ratio: sulphate aluminium cement 20%, mineral admixture 15%, half water desulfurized gypsum 5%, reclaimed sand 45%, thickener 0.5%, retarder 0.1%, water-reducing agent 1.5%, water 13%.
Performance: cohesiveness is good;Setting time: 14 minutes (initial set)/19 minute (final set);3 days compression strength: 30.1MPa;28 days compression strength: 45.7MPa.

Claims (9)

1. a kind of for building the green cement sill of 3D printing, it is characterised in that: according to mass percent, by following components Composition:
Sulphate aluminium cement 20 ~ 40%,
Mineral admixture 0 ~ 20%,
Gypsum 0 ~ 10%,
Reclaimed sand 20 ~ 50%,
Thickener 0 ~ 2%,
Retarder 0 ~ 0.2%,
Water-reducing agent 0 ~ 2%,
Water 9 ~ 20%.
2. according to claim 1 a kind of for building the green cement sill of 3D printing, it is characterised in that: the water Mud is sulphate aluminium cement, has the characteristics that the energy conservations, emission reduction such as firing temperature is low, carbon emission amount is small.
3. according to claim 1 a kind of for building the green cement sill of 3D printing, it is characterised in that: the mine Polymer blends material refers to that slag, flyash, silicon ash, metakaolin etc. have the complementary gelling of pozzolanic activity or latent hydraulicity Material.
4. according to claim 1 a kind of for building the green cement sill of 3D printing, it is characterised in that: the stone Cream refers to the natural gypsum, desulfurized gypsum, ardealite or other industry by-product gypsums or its dewatered semi-hydrated gypsum.
5. according to claim 1 a kind of for building the green cement sill of 3D printing, it is characterised in that: it is described again Greensand be it is broken by building waste discarded concrete, screening obtains, maximum particle diameter is no more than 5mm.
6. according to claim 1 a kind of for building the green cement sill of 3D printing, it is characterised in that: the increasing The thick dose of additive for methylcellulose, carboxymethyl cellulose or cellulose ether etc. with thickening function.
7. according to claim 1 a kind of for building the green cement sill of 3D printing, it is characterised in that: described slow Solidifying agent, which refers to, extends cement, the additive of gypsum setting time.
8. according to claim 1 a kind of for building the green cement sill of 3D printing, it is characterised in that: described to subtract Aqua refers to polycarboxylic acids, how the additive with diminishing function such as to be.
9. according to claim 1 a kind of for building the green cement sill of 3D printing, it is characterised in that: preparation side Method the following steps are included:
Each raw material is weighed according to the proportion, and water-reducing agent, retarder is soluble in water, stir evenly, for use;
By cement, mineral admixture, gypsum, reclaimed sand, thickener dry-mixed 1 ~ 2 minute in blender;
Water solution mixture in step (1) is poured into dry blend and is again stirring for 2 minutes, slurry can be taken the dish out of the pot and be transmitted to 3D Print system is for printing building.
CN201811320939.0A 2018-11-07 2018-11-07 It is a kind of for building the green cement sill of 3D printing Pending CN109111179A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111484287A (en) * 2020-04-15 2020-08-04 同济大学 High-strength recycled concrete capable of being printed in 3D mode and preparation method thereof
CN111517740A (en) * 2020-05-09 2020-08-11 深圳大学 Cement-based composite material for 3D printing and preparation method thereof
CN112062514A (en) * 2020-07-29 2020-12-11 同济大学 Method for preparing 3D printing ink from waste 3D printing concrete

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105152620A (en) * 2015-10-26 2015-12-16 贵州腾峰科技有限责任公司 Ardealite premixed dry-mixed mortar capable of being used for 3D printing
CN105753404A (en) * 2016-02-03 2016-07-13 临沂大学 Cement-based material used for building 3D (three-dimensional) printing
CN106380151A (en) * 2016-08-30 2017-02-08 卓达新材料科技集团威海股份有限公司 Rapid-hardening sulphoaluminate cement gelling material for house 3D printing
CN107200536A (en) * 2017-06-26 2017-09-26 辉置智能科技(上海)有限公司 A kind of rapid shaping 3D printing slurry for being used to build and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105152620A (en) * 2015-10-26 2015-12-16 贵州腾峰科技有限责任公司 Ardealite premixed dry-mixed mortar capable of being used for 3D printing
CN105753404A (en) * 2016-02-03 2016-07-13 临沂大学 Cement-based material used for building 3D (three-dimensional) printing
CN106380151A (en) * 2016-08-30 2017-02-08 卓达新材料科技集团威海股份有限公司 Rapid-hardening sulphoaluminate cement gelling material for house 3D printing
CN107200536A (en) * 2017-06-26 2017-09-26 辉置智能科技(上海)有限公司 A kind of rapid shaping 3D printing slurry for being used to build and preparation method thereof

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111484287A (en) * 2020-04-15 2020-08-04 同济大学 High-strength recycled concrete capable of being printed in 3D mode and preparation method thereof
CN111517740A (en) * 2020-05-09 2020-08-11 深圳大学 Cement-based composite material for 3D printing and preparation method thereof
CN112062514A (en) * 2020-07-29 2020-12-11 同济大学 Method for preparing 3D printing ink from waste 3D printing concrete

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