Właściwości oraz trwałość zapraw cementowych zawierających denny popiół ze spalania odpadów komunalnych, jako częściowy zamiennik piasku kwarcowego

Pavlik, Z.; Keppert, M.; Pavlíková, M.; Žumár, J.; Fořt, J.; Černý, R.

Artykuł - szczegóły

Tytuł artykułu

Właściwości oraz trwałość zapraw cementowych zawierających denny popiół ze spalania odpadów komunalnych, jako częściowy zamiennik piasku kwarcowego

Autorzy

Pavlik Z. , Keppert M. , Pavlíková M. , Žumár J. , Fořt J. , Černý R.

Wybrane pełne teksty z tego czasopisma

http://www.cementwapnobeton.pl/

Identyfikatory

Warianty tytułu

Mechanical, hygric, and durability properties of cement mortar with MSWI bottom ash as partial silica sand replacement

Języki publikacji

PL EN

Abstrakty

Przeprowadzono badania popiołu dennego (PD) ze spalania stałych odpadów komunalnych jako zamiennika części piasku krzemionkowego w zaprawach. Zbadany laserowo rozkład ziarnowy tego popiołu mieścił się w przedziale od 0,1 do 100 μm i uzupełniał w tym zakresie krzywą piasku. Dodatek PD spowodował spadek gęstości pozornej zaprawy przy niezmienionej gęstości właściwej. Rozkład ziarnowy porów w zakresie od 0,07 do 100 μm był w zaprawie z dodatkiem 10% PD podobny do zaprawy wzorcowej. Natomiast dodatek 40% PD spowodował jego zwiększenie. Wytrzymałość na ściskanie i zginanie z 10% dodatkiem PD była większa od wzorcowej, a z 40% PD nieznacznie mniejsza. Transport wody uległ spowolnieniu w zaprawach z dodatkiem PD, a retencja wody była mniejsza. Natomiast nasiąkliwość była większa w zaprawach z dodatkiem PD. Odporność na zamrażanie była najlepsza w przypadku zapraw z dodatkiem PD.

A possible application of bottom ash (BA) produced in the municipal solid waste incineration (MSWI) facilities as a partial replacement of silica sand in cement mortar was studied. The particle size distribution of BA and silica sand was measured by laser-diffraction and standard-sieve methods. The composition of BA was analyzed using XRF and SEM combined with EDS. Additional basic characteristics of BA, such as pH, solubility in water, pozzolanic activity, powder density, and matrix density, were determined as well. For the cement mortars, basic physical characteristics and mechanical properties were firstly tested. Then, water absorption coefficient and moisture diffusivity were determined using the free water intake test and inverse analysis of moisture profiles, respectively. The moisture accumulation was characterized by sorption and desorption isotherms and water retention curves. Durability of cement mortars was assessed by the freeze/thaw resistance test. Experimental results show that up to the 40% aggregate replacement level the application of BA can reduce the penetration of liquid water into the analyzed mortars and enhance their freeze/thaw resistance while the strength is basically unaffected. Therefore, BA could be considered a prospective material in cement-composite mix designing.

Słowa kluczowe

odpad komunalny spalanie odpadów popiół denny wykorzystanie odpadów zaprawa cementowa zaprawa modyfikowana właściwości mechaniczne właściwości fizyczne trwałość

municipal waste waste incineration bottom ash waste utilization cement mortar modified mortar mechanical properties physical properties durability

Wydawca

Fundacja Cement, Wapno, Beton

Czasopismo

Cement Wapno Beton

Rocznik

2014

Tom

R. 19/81, nr 2

Strony

67--80

Opis fizyczny

Bibliogr. 35 poz., il., tab.

Twórcy

autor

Pavlik Z.

Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Czech Republic

autor

Keppert M.

Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Czech Republic

autor

Pavlíková M.

Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Czech Republic

autor

Žumár J.

Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Czech Republic

autor

Fořt J.

Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Czech Republic

autor

Černý R.

Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Czech Republic

Bibliografia

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Typ dokumentu

Bibliografia

Identyfikator YADDA

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