RU2581062C1 - Crude mixture for protective coating of surface of carnallite rock - Google Patents

Crude mixture for protective coating of surface of carnallite rock Download PDF

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Publication number
RU2581062C1
RU2581062C1 RU2015112800/03A RU2015112800A RU2581062C1 RU 2581062 C1 RU2581062 C1 RU 2581062C1 RU 2015112800/03 A RU2015112800/03 A RU 2015112800/03A RU 2015112800 A RU2015112800 A RU 2015112800A RU 2581062 C1 RU2581062 C1 RU 2581062C1
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Russia
Prior art keywords
protective coating
mixture
aggregate
portland cement
rock
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RU2015112800/03A
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Russian (ru)
Inventor
Лариса Борисовна Сватовская
Валентина Яковлевна Соловьева
Татьяна Игоревна Бойкова
Владимир Николаевич Сурков
Вера Ефимовна Иванова
Татьяна Владимировна Смирнова
Дмитрий Вадимович Соловьев
Original Assignee
Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Петербургский государственный университет путей сообщения Императора Александра I"
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Priority to RU2015112800/03A priority Critical patent/RU2581062C1/en
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    • 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
    • C04B14/00Use 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
    • C04B14/02Granular materials, e.g. microballoons
    • C04B14/26Carbonates
    • 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
    • C04B24/00Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/003Phosphorus-containing compounds
    • 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
    • C04B24/00Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24Macromolecular compounds
    • C04B24/26Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/2623Polyvinylalcohols; Polyvinylacetates
    • 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
    • C04B28/04Portland 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
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • 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
    • C04B2103/00Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/56Opacifiers
    • C04B2103/58Shrinkage reducing agents
    • 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
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482Coating or impregnation materials
    • 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
    • C04B2111/20Resistance against chemical, physical or biological attack
    • 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
    • C04B2111/34Non-shrinking or non-cracking materials
    • C04B2111/343Crack resistant materials

Abstract

FIELD: construction.
SUBSTANCE: invention can be used for carnallite rock protection. Crude mixture consisting of Portland cement, aggregate, complex additive and water, aggregate contains micro calcite fraction 100 micron, and complex additive consists of a polymer of vinyl acetate, superplasticizing agent trichloroethylphosphate and polypropylene fibre length of 6 mm, with the following component ratio, wt %: 93.2-94.2; 0.4-0.5; 5.4-6.3 respectively, with following ratio of components, wt %: Portland cement 34.4-36.48 ; said aggregate 43.72-44.82; mentioned additive 6.4-6.9; water 13.4-13.8.
EFFECT: high crack resistance and adhesion strength to the surface of rocks, represented by mixture of potassium, sodium and magnesium.
1 cl, 2 tbl

Description

The invention relates to the field of building materials and can be used to protect the surface of carnallite rock.
Known raw mix used as a protective coating containing Portland cement clinker 62-68%, sodium nitrate 3-10%, potassium chromate 2-5%, the rest is water (RU No. 2017704, C04B 41/62, 1994).
The disadvantage of this technical solution is the insufficient fracture toughness and insufficient adhesive strength of the protective coating from the raw mixture to the rock surface, represented by a mixture of potassium, sodium and magnesium chlorides.
Known raw mix consisting of the following components, wt. %: cement 36.0-40.0, sand 39.0-49.0, sodium nitrate 0.9-1.8, sodium carbonate 2.0-3.2, sodium sulfate 2.5-3.6, calcium chloride 0.05-0.15, calcium carbide 0.75-1.15, calcium hydroxide 0.8-1.0, the rest is water (RU No. 2072335, C04B 28/00, 1997).
The disadvantage of this technical solution is the insufficient fracture toughness and insufficient adhesive strength of the protective coating from the raw mixture to the rock surface, represented by a mixture of potassium, sodium and magnesium chlorides.
The closest in technical essence to the claimed raw material mixture for the protective coating of the surface of the carnallite rock selected for the prototype is a raw material mixture consisting of the following components, wt. %: Portland cement - 30.3-32.3; aggregate represented by sand with a maximum fraction size of 0.63 mm, in an amount of 40.4-40.9; finely ground dolomitic limestone with a specific particle surface of 200 m / kg in an amount of 8.1-8.6; complex additive - 3.2-3.7 and water - 16.0-16.5. The complex additive consists of the following components, wt. %: silica fume with a specific particle surface of 2000 m / kg - 47-49; alumina cement - 24.5-25.0; gypsum CaSO 4 · 2H 2 O - 9.8-10.2; plasticizer C-3 - 3.7-4.0; silicic acid sol H 4 SiO 4 with a density of 1.014 g / cm 3 and a pH of 3.5-3.0-3.4; bentonite clay with a specific particle surface of 500 m 2 / kg - 10.0-10.4 (RU No. 2396235, C04B 41/63, 2010).
The disadvantage of this technical solution is the insufficient fracture toughness and insufficient adhesive strength of the protective coating from the raw mixture to the rock surface, represented by a mixture of potassium, sodium and magnesium chlorides.
The problem to which the invention is directed, is to create a raw material mixture for the protective coating of the surface of carnallite rock with increased crack resistance and increased adhesive strength to the surface of carnallite rock (KCl · MgCl 2 · 6H 2 O).
This object is achieved in that the raw material mixture containing Portland cement, aggregate, a complex additive and water contains microcalcite with a fraction size of 100 microns as a filler, the complex additive consists of a polymer represented by vinyl acetate, a superplasticizer of trichloroethyl phosphate and polypropylene fiber 6 mm long, in the following the ratio of components, wt. %:
The specified polymer 93.2-94.2
Superplasticizer trichloroethyl phosphate 0.4-0.5
Specified Polypropylene Fiber 5.4-6.3
in the following ratio of components of the raw mix, wt. %:
Portland cement 34.48-36.48
Specified Placeholder 43.72-44.82
Specified Additive 6.4-6.9
Water 13.4-13.8
Compared with the known raw material mixtures for the raw material mixture used as a protective coating on the surface of carnallite rock, a combination of the well-known components of Portland cement, aggregate represented by microcalcite fraction 100 microns, and a complex additive consisting of a polymer represented by vinyl acetate, trichloroethyl phosphate superplasticizer (TCEF) and polypropylene fiber with a length of 6 mm, which increases the elasticity of the protective coating from the raw mixture, thereby providing an increase in crack the stability of the protective coating, and also increases the adhesive strength of the protective coating to the surface of the rock, not only due to the formation of chemical bonds between the hydrated compounds formed in the protective coating, but also due to the emergence of Van der Waals forces arising between the polymer-cement protective coating and carnallite rock .
At the filing date, according to the authors and the applicant, the claimed raw material mixture for the protective coating of the surface of carnallite rock is not known and this technical solution has a world novelty.
The claimed combination of essential features exhibits a new property in the presence of this complex additive consisting of a polymer represented by vinyl acetate, a TCEP superplasticizer and a 6 mm long polypropylene fiber, which provides an extra total effect consisting in increasing the crack resistance of the protective coating and increasing the adhesive strength of the protective coating to the problem surface of carnallite breed.
The mixture, including Portland cement, aggregate and the proposed additive, provided a protective coating for the surface of carnallite rock, characterized by 50% increased crack resistance and 56% increased adhesive strength compared to the prototype.
According to the applicant and the authors, it is precisely another property of the totality of essential features that is not equal to the known properties of the distinguishing features that allows us to recognize this totality as compared to the known ones in science and technology, and the claimed invention as the “inventive step” criterion of eligibility.
The claimed invention is industrially applicable and can be used for the manufacture of building mixtures used as a protective coating on the surface of carnallite rock.
Concrete example
1. Preparation of the proposed additives
1.1. The vinyl acetate polymer ([-CH 2 -CH (OCOCH 3 ) -] n ) is metered in according to TU 6-11-0209955-15-90.
1.2. Trichloroethyl phosphate (TCEP, (ClCH 2 CH 2 O) 3 P) superplasticizer is dosed according to TU 6-05-1611-78.
1.3. Dose a polypropylene fiber with a length of 6 mm.
1.4. The metered-dose components are mixed according to Clause 1.1, Clause 1.2, and Clause 1.3 until a homogeneous dispersed system is obtained.
2. Preparation of dry building mix
2.1. Portland cement PC700 D0 is dosed.
2.2. Dose microcalcite fractions of 100 microns.
2.3. The metered components according to clauses 2.1 and 2.2 are mixed until a homogeneous fine powder is obtained, which is a dry building mixture for the protective coating of the surface of carnallite rock.
3. Preparation of the raw material mixture for the protective coating of the surface of carnallite rock
3.1. Dose dry building mixture prepared according to paragraph 2.3.
3.2. Dose the additive prepared according to paragraph 1.4.
3.3. Dose water.
3.4. Using a power drill, the components are metered in according to clause 3.1, clause 3.2 and clause 3.3 until a homogeneous, lump-free moving mass is obtained, which is used as intended as a protective coating and from which 4 × 4 × beam samples are made 16 cm. Hardening of the samples is carried out under normal conditions and upon reaching the design age of 28 days, the samples were tested in terms of bending strength and compressive strength, the results of which determined the coefficient of crack resistance:
K Tr = R Izg / R Comp
where R izg - the strength of the samples in bending;
R cr - the strength of the samples in compression,
and the adhesion strength were evaluated in 28-day old using a mechanical adgezimetra separated type "constant-A" with the use of a standard sample of 5 cm 2. The results are presented in table 1 and table 2.
Figure 00000001
Figure 00000002

Claims (1)

  1. The raw material mixture for the protective coating of the surface of carnallite rock containing Portland cement, aggregate, a complex additive and water, characterized in that the filler contains microcalcite fractions of 100 microns, and the complex additive consists of a polymer represented by vinyl acetate, superplasticizer trichloroethyl phosphate and polypropylene fiber 6 mm long , in the following ratio of components, wt. %:
    The specified polymer 93.2-94.2 TCEF superplasticizer 0.4-0.5 Specified Polypropylene Fiber 5.4-6.3

    in the following ratio of components of the raw mix, wt. %:
    Portland cement 34.48-36.48 Specified Placeholder 43.72-44.82 Specified Additive 6.4-6.9 Water 13.4-13.8
RU2015112800/03A 2015-04-07 2015-04-07 Crude mixture for protective coating of surface of carnallite rock RU2581062C1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2674780C1 (en) * 2018-02-01 2018-12-13 Федеральное государственное бюджетное образовательное учреждение высшего образования "Петербургский государственный университет путей сообщения Императора Александра I" ФГБОУ ВО ПГУПС Raw mixture for a protective coating
RU2675390C1 (en) * 2018-02-01 2018-12-19 Федеральное государственное бюджетное образовательное учреждение высшего образования "Петербургский государственный университет путей сообщения Императора Александра I" Raw mixture for protective coating
RU2720171C1 (en) * 2019-07-17 2020-04-27 Федеральное государственное бюджетное образовательное учреждение высшего образования "Петербургский государственный университет путей сообщения Императора Александра I" Crude mixture for protective coating
RU2720170C1 (en) * 2019-07-09 2020-04-27 Федеральное государственное бюджетное образовательное учреждение высшего образования "Петербургский государственный университет путей сообщения Императора Александра I" Crude mixture for protective coating

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU601161A1 (en) * 1976-06-14 1978-04-05 Украинский Научно-Исследовательский Институт Механической Обработки Древесины Composition for protecting wood from cracking and rotting
RU2311377C2 (en) * 2005-12-05 2007-11-27 Общество с ограниченной ответственностью "Блок-2001" Dry mortar mixture
RU2396235C1 (en) * 2009-07-01 2010-08-10 Государственное образовательное учреждение высшего профессионального образования "Петербургский государственный университет путей сообщения" Raw material mixture
RU2471738C1 (en) * 2011-07-12 2013-01-10 Евгений Михайлович Фоков Repair-waterproofing composition and additive in form of wollastonite complex for repair-waterproofing composition, mortar, concrete and articles based thereon
RU2499777C2 (en) * 2012-03-05 2013-11-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Оренбургский государственный университет" Dry construction mixture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU601161A1 (en) * 1976-06-14 1978-04-05 Украинский Научно-Исследовательский Институт Механической Обработки Древесины Composition for protecting wood from cracking and rotting
RU2311377C2 (en) * 2005-12-05 2007-11-27 Общество с ограниченной ответственностью "Блок-2001" Dry mortar mixture
RU2396235C1 (en) * 2009-07-01 2010-08-10 Государственное образовательное учреждение высшего профессионального образования "Петербургский государственный университет путей сообщения" Raw material mixture
RU2471738C1 (en) * 2011-07-12 2013-01-10 Евгений Михайлович Фоков Repair-waterproofing composition and additive in form of wollastonite complex for repair-waterproofing composition, mortar, concrete and articles based thereon
RU2499777C2 (en) * 2012-03-05 2013-11-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Оренбургский государственный университет" Dry construction mixture

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2674780C1 (en) * 2018-02-01 2018-12-13 Федеральное государственное бюджетное образовательное учреждение высшего образования "Петербургский государственный университет путей сообщения Императора Александра I" ФГБОУ ВО ПГУПС Raw mixture for a protective coating
RU2675390C1 (en) * 2018-02-01 2018-12-19 Федеральное государственное бюджетное образовательное учреждение высшего образования "Петербургский государственный университет путей сообщения Императора Александра I" Raw mixture for protective coating
RU2720170C1 (en) * 2019-07-09 2020-04-27 Федеральное государственное бюджетное образовательное учреждение высшего образования "Петербургский государственный университет путей сообщения Императора Александра I" Crude mixture for protective coating
RU2720171C1 (en) * 2019-07-17 2020-04-27 Федеральное государственное бюджетное образовательное учреждение высшего образования "Петербургский государственный университет путей сообщения Императора Александра I" Crude mixture for protective coating

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