PL120509B1 - Method of manufacture of building products from wet asbestos-cement wastessbesto-cementnykh otkhodov - Google Patents

Method of manufacture of building products from wet asbestos-cement wastessbesto-cementnykh otkhodov Download PDF

Info

Publication number
PL120509B1
PL120509B1 PL1977202416A PL20241677A PL120509B1 PL 120509 B1 PL120509 B1 PL 120509B1 PL 1977202416 A PL1977202416 A PL 1977202416A PL 20241677 A PL20241677 A PL 20241677A PL 120509 B1 PL120509 B1 PL 120509B1
Authority
PL
Poland
Prior art keywords
cement
asbestos
wet
waste
wastessbesto
Prior art date
Application number
PL1977202416A
Other languages
Polish (pl)
Other versions
PL202416A1 (en
Inventor
Jerzy Dyczek
Edward Czapla
Andrzej Roszkowski
Marek Petri
Lucyna Westfal
Karol Kolano
Original Assignee
Akad Gorniczo Hutnicza
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 Akad Gorniczo Hutnicza filed Critical Akad Gorniczo Hutnicza
Priority to PL1977202416A priority Critical patent/PL120509B1/en
Publication of PL202416A1 publication Critical patent/PL202416A1/en
Publication of PL120509B1 publication Critical patent/PL120509B1/en

Links

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
    • C04B18/00Use 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
    • C04B18/04Waste materials; Refuse
    • C04B18/16Waste materials; Refuse from building or ceramic industry
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Civil Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Description

Przedmiotem wynalazku jest sposób wytwarzania wyrobów budowlanych z mokrych odpadów azbes¬ towo-cementowych.Powstale podczas produkcji wyrobów azbestowo- cementowych odpady mokre, stanowia czesciowo odwodniona mieszanine cementu, wodorotlenku wa¬ pniowego, produktów reakcji mineralnych sklad¬ ników cementu z woda, najdrobniejszych czastek azbestu i talku.Znany ze zgloszenia nr P-176 202 sposób wytwa¬ rzania wyrobów azbestowo-cementowych polega na tym, ze szlam azbestowo-cementowy o dowolnej wilgotnosci urabia sie na papke w odpowiednich urzadzeniach z ewentualnym dodatkiem cementu i barwników mineralnych w wymaganej ilosci, a po dokladnym wymieszaniu formuje sie w od¬ powiednich formach przez prasowanie o nacisku 20—300 kG/cm2 w wymagane ksztalty.W procesie twardnienia nastepuja reakcje che¬ miczne w trakcie których powstaja Ca(OH)2, CaO-Si02-H2OII i «2CaOSi02-H20.Duze ilosci Ca(OH)2 w wyrobach maga powo¬ dowac wykwity badz moga przyczynic sie do ich spekania, poniewaz Ca(OH)2 reaguje z C02 zawar¬ tym w powietrzu.Istota wynalazku polega na tym, ze odpady mokre azbestowo-cementowe po ewentualnym roz- szlamowaniu miesza sie z piaskiem w proporcjach 3 : 7 do 7 : 3 czesci ciezarowych odpadów do piasku w przeliczeniu na sucha mase, po czym otrzymana 10 15 20 25 30 mieszanine odwadnia sie, formuje z niej elementy budowlane, które z kolei poddaje sie autokla- wizacji.W autoklawie przy podwyzszonym cisnieniu i temperaturze nastepuje proces twardnienia, w trakcie którego zachodzi reakcja pomiedzy wo¬ dorotlenkiem wapniowym i niezhydratyzowana czescia cementu znajdujacymi sie w szlamie a krzemionka zawarta w piasku. Tworza sie kolejno mineraly: Ca0£i02-H20 II, faza CaO-Si02-H2OI, a nastepnie tobermoryt. Pelne przereagowanie wodorotlenku wapniowego*, które nastepuje w procesie autoklawizacji ma istotny wplyw na wlasnosci uzytkowe wyrobów, a miano¬ wicie polepsza ich wlasnosci mechaniczne oraz odpornosc na zmiany cieplno-wilgotnosciowe.Przyklad I. Przy wytwarzaniu trójceglowych elementów drazonych szlam azbestowo-cementowy pobrany z haldy miesza sie z piaskiem w stosunku 3 :7 czesci ciezarowych w przeliczeniu na sucha mase, po czym mieszanine odwadnia sie i formuje elementy trójceglowe przez prasowanie.Do prasowania wyrobów stosuje sie nacisk 5 MPa. Uformowane wyroby poddaje sie autokla¬ wizacji w temperaturze 180°C, pod cisnieniem pary nasyconej przez 9 godzin. Wyroby wykazuja cie¬ zar objetosciowy 160 kg/m3, wytrzymalosc na sciskanie 6 MPa, przewodnosc cieplna w stanie suchym 0,7 W/m*K, nasiakliwosc nie wieksza niz 30% oraz mrozoodpornosc nie gorsza niz dla typo- 120 509120 509 * wych cegiel palonych. Gotowe wyroby stanowia typowy material scienny.Przyklad II. Przy wytwarzaniu trójceglo- wych elementów drazonych szlam azbestowo-ce- mentowy miesza sie z piaskiem w stosunku 3 :3 czesci ciezarowych w przeliczeniu na sucha mase, po czym mieszanine odwadnia sie i formuje ele¬ menty trójceglowe przez prasowanie.Do prasowania wyrobów stosuje sie nacisk 8 MPa. Uformowane wyroby poddaje sie autokla- wizacji w temperaturze 180°C pod cisnieniem pary nasyconej przez 9 godzin. Wyroby wykazuja cie¬ zar objetosciowy 130 kg/m3, wytrzymalosc na scis¬ kanie 8 MPa, przewodnosc cieplna w stanie su¬ chym 0,4 W/m-K, nasiakliwosc nie wieksza niz 30°/o oraz mrozoodpornosc nie gorsza niz dla typo¬ wych cegiel palonych.Przyklad III. Szlam azbestowo-cementowy miesza sie z piaskiem w stosunku 3:5 czesci ciezarowych w - przeliczeniu na sucha mase, po czym mieszanine odwadnia sie i formuje elementy przez prasowanie. 10 IB 20 Do prasowania stosuje sie nacisk 7 MPa. Ufor¬ mowane wyroby poddaje sie autoklawizacji w tem¬ peraturze 180°C pod cisnieniem pary nasyconej przez 9 godzin. Wyroby wykazuja ciezar objeto¬ sciowy 150 kgi/m3, wytrzymalosc na sciskanie 7 MPa, przewodnosc cieplna w stanie suchym 0,55 Wi/mK, nasiakliwosc nie wieksza niz 30Vo oraz mrozoodpornosc nie gorsza niz dla typowych cegiel palonych.Zastrzezenie patentowe Sposób wytwarzania wyrobów budowlanych z mokrych odpadów azbestowo-cementowych, po¬ legajacy na zmieszaniu odpadów azbestowo-cemen¬ towych z innymi skladnikami, a nastepnie uformo¬ waniu przez prasowanie elementów, znamienny tym, ze odpady mokre po ewentualnym rozszla- mowaniu miesza sie z piaskiem w proporcjach 3:7 do 7:3 czesci ciezarowych odpadów do piasku w przeliczeniu na sucha mase, po czym otrzymana mieszanine odwadnia sie, a nastepnie formuje sie z niej elementy budowlane, które z kolei poddaje sie autoklawizacji..ZG Z-d Nr 2. Z. 590/83.— :105+20 egz. A4 Cena 100 zl PLThe subject of the invention is a method of producing construction products from wet asbestos-cement wastes. The wet wastes produced during the production of asbestos-cement products are a partially dehydrated mixture of cement, lime hydroxide, reaction products of mineral cement components with water, the finest asbestos particles. The method of producing asbestos-cement products, known from the application no. P-176 202, consists in making asbestos-cement slurry of any moisture content in appropriate equipment with the possible addition of cement and mineral dyes in the required amount, and after thorough mixing, it is formed in appropriate forms by pressing with a pressure of 20-300 kg / cm2 into the required shapes. In the process of hardening, chemical reactions take place, during which Ca (OH) 2, CaO-SiO2-H2OII and 2CaOSiO2 are formed -H20. Large amounts of Ca (OH) 2 in the warehouse's products cause efflorescence or may contribute to their cracking, because Ca (OH) 2 reacts with CO2 contained in the air. The essence of the invention is that wet asbestos-cement waste, after possible sludging, is mixed with sand in a proportion of 3: 7 to 7: 3 parts of heavy waste to sand in terms of dry mass, after the mixture obtained is dehydrated, it forms building elements, which are then autoclaved. In the autoclave, under increased pressure and temperature, a hardening process takes place, during which a reaction between calcium hydroxide and the unhydrated part takes place. cement in the sludge and silica in sand. The following minerals are formed: CaO2-H2O II, the CaO-SiO2-H2OI phase, and then tobermorite. The complete conversion of calcium hydroxide *, which takes place in the autoclaving process, has a significant impact on the functional properties of the products, namely it improves their mechanical properties and resistance to thermal and humidity changes. is mixed with sand in a ratio of 3: 7 by weight on a dry mass basis, then the mixture is dehydrated and formed into three-brick elements by pressing. 5 MPa pressure is applied to press the products. The molded articles are autoclaved at 180 ° C. under saturated steam pressure for 9 hours. The products have a volume weight of 160 kg / m3, a compressive strength of 6 MPa, a thermal conductivity in a dry state of 0.7 W / m * K, an absorbency of no more than 30% and a frost resistance not worse than for typical 120 509 120 509 * burnt bricks. Finished products are typical wall material. Example II. In the production of three-carbon elements, asbestos-cement sludge is mixed with sand in a ratio of 3: 3 parts by weight based on dry mass, after which the mixture is dewatered and the three-brick elements are pressed by pressing. 8 MPa. The shaped articles are autoclaved at 180 ° C under saturated steam pressure for 9 hours. The products have a volume weight of 130 kg / m3, a compressive strength of 8 MPa, a thermal conductivity in a dry state of 0.4 W / mK, an absorbency of no more than 30%, and a frost resistance not worse than for typical burnt bricks. Example III. The asbestos-cement sludge is mixed with sand in a ratio of 3: 5 parts by weight in terms of dry mass, then the mixture is dehydrated and the elements are formed by pressing. 10 IB 20 A pressure of 7 MPa is used for pressing. The formed articles were autoclaved at 180 ° C. under the pressure of saturated steam for 9 hours. The products exhibit a volume weight of 150 kgi / m3, compressive strength 7 MPa, thermal conductivity in a dry state 0.55 Wi / mK, heat resistance not more than 30Vo and frost resistance not worse than for typical burnt bricks. from wet asbestos-cement waste, consisting in mixing asbestos-cement waste with other components, and then shaping the elements by pressing, characterized in that the wet waste, after possible sludging, is mixed with sand in a proportion of 3: 7 to 7: 3 parts of truck waste into sand, calculated as dry mass, then the obtained mixture is dewatered and then it is formed into building elements, which in turn are subject to autoclaving. ZG Zd Nr 2. Z. 590/83 .—: 105 + 20 copies A4 Price PLN 100 PL

Claims (3)

1. Zastrzezenie patentowe Sposób wytwarzania wyrobów budowlanych z mokrych odpadów azbestowo-cementowych, po¬ legajacy na zmieszaniu odpadów azbestowo-cemen¬ towych z innymi skladnikami, a nastepnie uformo¬ waniu przez prasowanie elementów, znamienny tym, ze odpady mokre po ewentualnym rozszla- mowaniu miesza sie z piaskiem w proporcjach 3:7 do 7:3 czesci ciezarowych odpadów do piasku w przeliczeniu na sucha mase, po czym otrzymana mieszanine odwadnia sie, a nastepnie formuje sie z niej elementy budowlane, które z kolei poddaje sie autoklawizacji. .ZG Z-d NrClaim 1. A method of producing construction products from wet asbestos-cement waste, which consists in mixing asbestos-cement waste with other components, and then forming by pressing the elements, characterized in that the wet waste after possible demolition it is mixed with sand in a proportion of 3: 7 to 7: 3 parts of heavy waste to sand in terms of dry mass, then the resulting mixture is dewatered, and then it is formed into building elements, which in turn are subject to autoclaving. .ZG Z-d No. 2. Z. 590/82. Z. 590/8 3.— :105+20 egz. A4 Cena 100 zl PL3.—: 105 + 20 copies A4 Price PLN 100 PL
PL1977202416A 1977-11-24 1977-11-24 Method of manufacture of building products from wet asbestos-cement wastessbesto-cementnykh otkhodov PL120509B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL1977202416A PL120509B1 (en) 1977-11-24 1977-11-24 Method of manufacture of building products from wet asbestos-cement wastessbesto-cementnykh otkhodov

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL1977202416A PL120509B1 (en) 1977-11-24 1977-11-24 Method of manufacture of building products from wet asbestos-cement wastessbesto-cementnykh otkhodov

Publications (2)

Publication Number Publication Date
PL202416A1 PL202416A1 (en) 1979-06-04
PL120509B1 true PL120509B1 (en) 1982-03-31

Family

ID=19985769

Family Applications (1)

Application Number Title Priority Date Filing Date
PL1977202416A PL120509B1 (en) 1977-11-24 1977-11-24 Method of manufacture of building products from wet asbestos-cement wastessbesto-cementnykh otkhodov

Country Status (1)

Country Link
PL (1) PL120509B1 (en)

Also Published As

Publication number Publication date
PL202416A1 (en) 1979-06-04

Similar Documents

Publication Publication Date Title
CN100445233C (en) Concrete slurry containing magnesium and its preparation process and application thereof
CN102863189B (en) Preparation technique of waste residue composite light-weight thermal-insulation wallboard
US3501323A (en) Method of manufacturing building structural and paving products using a calcium silicate hydrate bonding matrix
CN101514089B (en) Self-insulation external wallboard for buildings
KR101691526B1 (en) Manufacturing method of non-firing lightweight board, and lightweight board manufactured thereby
Gómez-Casero et al. Effect of steel slag and curing temperature on the improvement in technological properties of biomass bottom ash based alkali-activated materials
US20050269730A1 (en) Method for manufacturing a wood cement board
KR20090098181A (en) High compressive strength quartz mortar and manufacturing method thereof
HU224364B1 (en) Method for producing concrete or mortar using a vegetal aggregate
CN100535351C (en) Ball-silicon composite building thermal insulation material and manufacturing method therefor
JPH0138067B2 (en)
WO2017175240A1 (en) Autoclaved fly ash bricks and method of manufacturing the same
MXPA05001125A (en) Improved compositions of cellular materials that contain anhydrite and methods for its preparation.
KR20130134415A (en) Environment-frendly loess brick and manufacturing method by the same
CN102180647A (en) Desulfurized building gypsum water-proof building block
CN101497516A (en) High-strength phosphogypsum wall material and method for making brick using the material
JPH10296224A (en) Method for utilizing waste gypsum board material
BG65746B1 (en) Method for producing masonry and facing blocks
KR102062485B1 (en) Manufacturing method of nonplastic light weight block
PL120509B1 (en) Method of manufacture of building products from wet asbestos-cement wastessbesto-cementnykh otkhodov
RU2243179C1 (en) Raw mixture for engineering insulating material
CN114988837B (en) Light heat-insulating material and preparation method and application thereof
RU2703061C1 (en) Mixture for production of silicate brick
SU1008203A1 (en) Raw mix for making heat insulating products
SU1016268A1 (en) Building mix for making slabs by hot pressing

Legal Events

Date Code Title Description
LICE Declarations of willingness to grant licence

Effective date: 20090220