Wpływ pyłów z kaolinu i z bocznikowania gazów z pieców cementowych na właściwości betonu do prefabrykatów

• Autorzy: Ghorab H. Y. , Tawfik A. , Fadel O.

Warianty tytułu

EN

Effect of kaolin and cement kiln bypass dusts on the performance of precast concrete

• Języki publikacji: PL EN

Abstrakty

PL

Zbadano wpływ 10% zastąpienia cementu CEM I 42,5N pyłem kaolinowym, lub pyłem z bocznikowania gazów z pieca cementowego, na wytrzymałość betonu do produkcji elementów prefabrykowanych. Próbki betonowe dojrzewały w wodzie, wilgotnej atmosferze oraz były poddane w ciągu 10 godzin obróbce parą. Doświadczenia wykazały, że próbki z betonu odniesienia osiągnęły wytrzymałość 45-52 MPa, niezależnie od warunków dojrzewania. Natomiast zastąpienie 10% cementu pyłem kaolinowym spowodowało zbliżony spadek wytrzymałości. Beton z cementu z dodatkiem pyłu z bocznikowania gazów wykazał znacznie gorszą wytrzymałość po obróbce parą, natomiast dojrzewanie w wilgotnej atmosferze dały zadowalające wyniki.

EN

The compressive strength of concrete cubes of CEM 142.5 N and with 10% of kaolin dust or cement kiln bypass dust, replacing cement, were examined. The concrete was designed to assure the early strength of about 45 MPa, for the precast concrete production. The samples were cured in water and under humid conditions for 90 days as well as up to 10 hours in steam environment. The results have shown that the reference specimens have 45 to 52 MPa, independently of curing conditions. Replacement of cement by kaolin dust caused an average decrease of concrete early strength of about 10%. Concrete produced of cement with bypass dust had showing an adversely influence of steam treatment with a drastic drop of strength of 33%, however, humid curing had assured an acceptable strength.

Słowa kluczowe

PL

element betonowy; element prefabrykowany; dodatek mineralny; odpad przemysłowy; pył kaolinowy; piec cementowy; pył z bocznikowania gazów

EN

concrete element; precast concrete element; mineral additive; industrial waste; kaolin dust; cement kiln; bypass dust

• Wydawca: Fundacja Cement, Wapno, Beton
• Czasopismo: Cement Wapno Beton
• Rocznik: 2015
• Tom: R. 20/82, nr 4
• Strony: 235--243
• Opis fizyczny: Bibliogr. 18 poz., il., tab.

Twórcy

autor

Ghorab H. Y.

• Faculty of Science, Helwan University

autor

Tawfik A.

• National Research Center, Cairo, Egypt

autor

Fadel O.

• Faculty of Science, Helwan University

Bibliografia

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• 19. D. Heinz, U. Ludwig, Mechanisms of secondary ettringite formation in mortars and concretes subjected to heat treatment, Concr. Durab. Dig. ACI SP-100, 2059 – 2065, 1987.

Uwagi

Błąd numeracji w bibliografii