WO2015055879A1 - Composition de béton réfractaire - Google Patents

Composition de béton réfractaire Download PDF

Info

Publication number
WO2015055879A1
WO2015055879A1 PCT/ES2014/070776 ES2014070776W WO2015055879A1 WO 2015055879 A1 WO2015055879 A1 WO 2015055879A1 ES 2014070776 W ES2014070776 W ES 2014070776W WO 2015055879 A1 WO2015055879 A1 WO 2015055879A1
Authority
WO
WIPO (PCT)
Prior art keywords
composition
proportion
concrete
composition according
aggregate
Prior art date
Application number
PCT/ES2014/070776
Other languages
English (en)
Spanish (es)
Inventor
Edouard GONZÁLEZ ROUBAUD
David PÉREZ OSORIO
Cristina PRIETO RÍOS
Isabel GIRBES CLARI
Luis Miguel ORDÓÑEZ BELLOC
Original Assignee
Abengoa Solar New Technologies, S.A.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Abengoa Solar New Technologies, S.A. filed Critical Abengoa Solar New Technologies, S.A.
Publication of WO2015055879A1 publication Critical patent/WO2015055879A1/fr

Links

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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00862—Uses not provided for elsewhere in C04B2111/00 for nuclear applications, e.g. ray-absorbing concrete
    • 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
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • 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

Definitions

  • the present invention relates to a refractory concrete composition of low thermal conductivity and high strength. Likewise, the present invention relates to the process for obtaining said composition and its use as a structural concrete cladding for elements subjected to high temperatures that at the same time need to withstand structural compression stresses, such as nuclear reactors, tanks and storage tanks, foundations and ovens. Therefore, the present invention could be framed in the field of construction, in architectural and engineering works. STATE OF THE TECHNIQUE
  • insulating refractory materials used as insulators for use in high temperature applications (450-1700 ° C). These insulating refractory materials are mainly composed of aluminum and silica materials that allow to increase the thermal resistance of concrete at very high temperatures. In this sense, there is a composition comprising high and low density alumina and colloidal silica refractory material (ES2197180), but which is very expensive due to its content in aluminous materials.
  • compositions with excellent compression resistance such as a hydraulic cement composed of a portland cement, plaster, water and plasticizer, which allows reducing the demand for water (W01997038947), a concrete consisting mainly of portland cement, sand (silicon), and Glenium-106 that reaches a compressive strength of 100 MPa at 28 days (WO2006027645) or a projection concrete comprising Portland cement, aggregates with a size less than 2 mm, additives and water (W01999058465).
  • a hydraulic cement composed of a portland cement, plaster, water and plasticizer, which allows reducing the demand for water
  • a concrete consisting mainly of portland cement, sand (silicon), and Glenium-106 that reaches a compressive strength of 100 MPa at 28 days (WO2006027645)
  • a projection concrete comprising Portland cement, aggregates with a size less than 2 mm, additives and water (W01999058465).
  • the term "conventional or common cement” refers to that cement with a low alkali content that has a low chemical vulnerability and high compressive strength.
  • this type of cement mention, but not limited to, CEM I 42.5R / SR and CEM I 52.5R / SR cements, which refers to a Portland cement type I of high strength 42.5 MPa and 52.5 MPa respectively at 28 days with high initial resistance (R) and sulfate resistant (/ SR).
  • the term "light aggregates” refers to aggregates of a ceramic nature, preferably of the light expanded clay type, with a density of less than 2000 kg / m 3
  • Examples include, among others, expanded clay sand (EA) with a grain size of less than 4 mm (sand AE 0/4) and expanded clay gravel (AE) with a grain size of less than 10 mm (gravel AE 3/10).
  • EA expanded clay sand
  • AE expanded clay gravel
  • the densities indicated above for expanded clay give said clay the low weight characteristic, that is, the designation of light clay, characteristic that contributes to the final concrete conductivity being less than 0.45 W / mK as desired, thus obtaining a refractory concrete of low conductivity (insulator).
  • water reducing active dispersing agent refers to an additive capable of strongly reducing the water content of the composition without modifying the consistency. This additive makes the fresh concrete have better workability and pumpability properties.
  • fly ash type F refers, in the present invention, to that fly ash produced by calcining charcoal or Bituminous that contains less than 15% calcium carbonate (lime) and contains silica, aluminum and iron.
  • the term "effective water / cement ratio" or "a / c e fect ⁇ va” refers, in the present invention, to the ratio between the amount of water in the batch plus the amount of water contained in aggregates and additives, and the amount of cement of the kneaded. This relationship indicates the mechanical strength of concrete as it is related to its density.
  • the invention relates to the composition defined above, where the ratio a / c and date is from 0.49 to 0.71, more preferably from 0.65.
  • the invention relates to the composition defined above, which further comprises an aerator in a proportion less than 0.30% by mass with respect to the final composition, more preferably less than 0.10% by mass with respect to to the final composition.
  • the aerator is BASF Microair-100.
  • the invention relates to the composition defined above, wherein the cement is gray Portland cement of category CEM I 42.5 R or CEM I 52.5 R, preferably CEM I 52.5 R.
  • the invention relates to the composition defined above, where the cement is in a proportion between 430 and 550 kg / m 3 , more preferably 445 kg / m 3
  • the invention relates to the composition defined above, where the light aggregate is selected from expanded clays with densities of less than 2000 kg / m 3 , and preferably with densities of less than 1600 kg / m 3 .
  • the invention relates to the composition defined above, where the light aggregate is selected from expanded clay sand of grain size less than 4 mm and expanded clay gravel of grain size less than 10 mm.
  • fine aggregate means one with a grain size of less than 4 mm and "coarse aggregate” means one with a grain size of less than 1.2 mm.
  • sand in particular the expanded clay sand AE 0/4 can be defined as “fine aggregate”, since this term refers to aggregates with small grain size, in particular less than 4 mm.
  • gravel in particular expanded clay gravel AE 3/10 can be defined as "coarse aggregate", since this term refers to aggregates with grain size greater than fine aggregate, particularly with aggregate size grain less than 1, 2 mm.
  • the invention relates to the composition defined above, where the light aggregate is in a proportion between 650 and 850 kg / m 3 , more preferably 698 kg / m 3
  • the invention relates to the composition defined above, wherein the water reducing active dispersing agent is a concrete superplasticizer, more preferably of the type lignosulfonates, naphthalene sulfonates, melamine sulphonates or polycarboxylates.
  • the dispersing agent is in a proportion between 4.0 and 5.0 kg / m 3 , more preferably 4.5 kg / m 3 .
  • the invention relates to the composition defined above, where the fly ash is of type F.
  • the invention relates to the composition defined above, where the fly ash is in a proportion of between 80 and 120, more preferably in a proportion of 106 kg / m 3
  • the present invention relates to the procedure for obtaining the composition defined above, which comprises the steps of: a) measuring the humidity of the light aggregate and adjusting the amount of water and aggregate with respect to the final composition;
  • the humidity of the aggregates that form the light aggregate must be measured beforehand so that, if necessary, adjust or correct the dosage of the final composition by redosing aggregates and water in the mixture.
  • the humidity of the aggregates is determined by burning aggregates or hygrometric balances of a previous sample.
  • the process described above further comprises a step e) of adding an aerator, after step d) of adding the coarse aggregate.
  • the invention relates to the method of obtaining the composition defined above, where the kneading device is selected from a planetary vertical mixer or a concrete mixer, a concrete mixer truck and a concrete plant.
  • the third aspect of the present invention relates to the use of the composition described above as structural concrete cladding, preferably as cladding of structural concrete of containment structures, more preferably as structural concrete cladding of nuclear reactors, industrial facilities subjected to high temperatures , storage tanks and tanks, foundations or furnaces, even more preferably as a structural concrete coating of a thermal storage tank of a pressurized fluid.
  • the last aspect of the present invention relates to a thermal storage tank of a pressurized fluid, either liquid or gas, comprising an external layer of post-tensioned concrete with a characteristic resistance greater than 50 MPa and an internal layer of refractory concrete that It acts as a thermal barrier between the fluid and the post-tensioned concrete, characterized in that the inner layer is composed of the composition of the invention described above.
  • Fig. 1 Vertical section and side view of the accumulator tank of example 3.
  • Fig. 2 Cross section of 90 ° made to the accumulator tank of example 3.
  • Table 1 shows a composition of the concrete of the invention without aeration.
  • Table 1 Example of the composition of the concrete of the invention.
  • the density of the aggregates must be between 500 and 2000 kg / m 3 , and more preferably between 1000 and 1600 kg / m 3 .
  • the BASF Glenium C303-SCC superplasticizer has been used.
  • fly ash As for fly ash, one of type F has been used.
  • the Abrams settlement or cone test has been carried out, according to the specifications of the UNE EN 12350-2: 2006 standard (AENOR 2006). This test is used to determine the consistency of the mixture at the time of concrete pouring. It also allows to check the homogeneity of the concrete through the segregation of the mixture.
  • Example 2 Composition of concrete with aerator
  • the following table 7 shows another concrete dosage of the invention together with the amounts of materials used.
  • Table 8 Properties of the composition of the invention
  • the mixture of the refractory concrete is manufactured in a kneading device.
  • the superplasticizer additive is added to the water.
  • Cement, fly ash and fine aggregate are added in that order.
  • the coarse aggregate and the aerating additive are added.
  • Example 3 Use of the composition of the invention as a structural concrete coating of a thermal storage tank of a pressurized fluid.
  • composition of the invention of examples 1 or 2 that is with or without aeration, can be used as a structural concrete siding for the manufacture of a thermal storage tank.
  • a tank like the one described in the Spanish patent application with application number P201200796, with application date August 6, 2012. It is a cylindrical steam accumulator tank consisting of two layers, an outer layer of post-tensioned concrete and an inner layer of refractory concrete.
  • Figure 1 shows the vertical section of a steam accumulator comprising the concrete composition of the invention.
  • This cylindrical shape has two semi-ellipsoids at its ends, the semi-ellipsoidal body of post-tensioned concrete (3) and the semi-ellipsoidal body of a refractory concrete composed of the composition of the invention, particularly that of examples 1 or 2, (4) , so that it allows a better distribution of the tensions generated by the pressure and the temperature inside the accumulator as well as minimizing the loss of useful volume with respect to the spherical cap.
  • Figure 2 shows the 90 ° cross section made to the concrete accumulator where the post-tensioned concrete base (5) can be seen.

Abstract

Composition de béton réfractaire à faible conductivité thermique et à haute résistance, procédé d'obtention et d'utilisation de cette composition comme revêtement de béton de structure pour des éléments soumis à des températures élevées et qui doivent simultanément supporter des efforts structuraux de compression, tels que les réacteurs nucléaires, les dépôts et les cuves de stockage, les fondations et les fours.
PCT/ES2014/070776 2013-10-14 2014-10-13 Composition de béton réfractaire WO2015055879A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201331508A ES2535781B1 (es) 2013-10-14 2013-10-14 Composición de hormigón refractario
ESP201331508 2013-10-14

Publications (1)

Publication Number Publication Date
WO2015055879A1 true WO2015055879A1 (fr) 2015-04-23

Family

ID=52827702

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2014/070776 WO2015055879A1 (fr) 2013-10-14 2014-10-13 Composition de béton réfractaire

Country Status (2)

Country Link
ES (1) ES2535781B1 (fr)
WO (1) WO2015055879A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017167321A1 (fr) * 2016-03-29 2017-10-05 HALSER, Leopold Béton à teneur réduite en ciment et procédé de production de béton à teneur réduite en ciment
WO2018091015A1 (fr) * 2016-11-21 2018-05-24 Rosenloecher Helmut Procédé de fabrication d'une suspension de matériau de construction à prise hydraulique, composition pour une suspension de matériau de construction à prise hydraulique et élément fabriqué avec une suspension de matériau de construction à prise hydraulique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080275149A1 (en) * 2007-05-04 2008-11-06 Nova Chemicals Inc. Durable concrete compositions
US20090253831A1 (en) * 2008-04-04 2009-10-08 Thuan Bui Lightweight structure concrete composition

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080275149A1 (en) * 2007-05-04 2008-11-06 Nova Chemicals Inc. Durable concrete compositions
US20090253831A1 (en) * 2008-04-04 2009-10-08 Thuan Bui Lightweight structure concrete composition

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
GOPALAN ET AL.: "Fly Ash in High-Strength Concrete", ACI SPECIAL PUBLICATION, vol. 121, 1990, pages 331 A 350 *
LIU ET AL.: "Self-compacting concrete with different levels of pulverized fuel ash.", CONSTRUCTION AND BUILDING MATERIALS, vol. 24, 2010, pages 1245 A 1252 *
MALHOTRA.: "Superplasticized Fly Ash Concrete for Structural Applications.", CONCRETELNTERNATIONAL, vol. 8, 12 December 1986 (1986-12-12), pages 28 A 31 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017167321A1 (fr) * 2016-03-29 2017-10-05 HALSER, Leopold Béton à teneur réduite en ciment et procédé de production de béton à teneur réduite en ciment
WO2018091015A1 (fr) * 2016-11-21 2018-05-24 Rosenloecher Helmut Procédé de fabrication d'une suspension de matériau de construction à prise hydraulique, composition pour une suspension de matériau de construction à prise hydraulique et élément fabriqué avec une suspension de matériau de construction à prise hydraulique

Also Published As

Publication number Publication date
ES2535781B1 (es) 2016-02-16
ES2535781A1 (es) 2015-05-14

Similar Documents

Publication Publication Date Title
Harith Study on polyurethane foamed concrete for use in structural applications
Adhikary et al. Development of flowable ultra-lightweight concrete using expanded glass aggregate, silica aerogel, and prefabricated plastic bubbles
Yu et al. Matrix design for waterproof engineered cementitious composites (ECCs)
He et al. Creep analysis of concrete containing rice husk ash
ES2535782B1 (es) Hormigón autocompactable de alta resistencia y su procedimiento de obtención
Paiva et al. Effect of pozzolans with different physical and chemical characteristics on concrete properties
Seo et al. Thermal behavior of alkali-activated fly ash/slag with the addition of an aerogel as an aggregate replacement
Shahmirzadi et al. Shrinkage behavior of cementitious 3D printing materials: Effect of temperature and relative humidity
Nayana et al. Strength and durability study on cement mortar with ceramic waste and micro-silica
ES2884029T3 (es) Utilización de óxido de calcio como agente de expansión en una composición de aglutinante hidráulico con una contracción muy baja
Nas et al. Mechanical, durability and microstructure properties of concrete containing natural zeolite
RU2515450C1 (ru) Высокопрочный легкий бетон
Janotka et al. Properties and utilization of zeolite-blended Portland cements
Deboucha et al. Natural pozzolana addition effect on compressive strength and capillary water absorption of Mortar
Özçelikci et al. Eco-hybrid cement-based building insulation materials as a circular economy solution to construction and demolition waste
Miccoli et al. Composite UHPC-AAC/CLC facade elements with modified interior plaster for new buildings and refurbishment. Materials and production technology
Gündüz et al. Influence of a new type of additive on the performance of polymer-lightweight mortar composites
ES2535781B1 (es) Composición de hormigón refractario
ES2807188T3 (es) Material moldeable en base a un aglutinante cementoso con resistencia a la contracción
ES2367944T3 (es) Formulación, utilización y procedimiento de obtención de un hormigón ligero estructural.
Khan et al. Sorptivity and durability assessment of dolomite impregnated ternary concrete
Zaichenko et al. Effect of expansive agent and shrinkage reducing admixture in shrinkage-compensating concrete under hot-dry curing environment
Doleželová et al. Moisture resistance and durability of the ternary gypsum-based binders
Koutnik et al. Properties of mortars based on β-belite-metakaolinite-hydrated lime binder system
WO2019240705A2 (fr) Mortier composite naturel, léger et préfabriqué ayant des propriétés d'isolation, système de liaison inorganique

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14853783

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14853783

Country of ref document: EP

Kind code of ref document: A1