Badania wytrzymałości i trwałości betonu zwykłego, średniej klasy i betonu o wysokiej wytrzymałości z dodatkami mineralnymi w odpowiednio dobranych proporcjach

• Autorzy: Ravi Prasad D. , Praveen Kumar V. V.

Warianty tytułu

EN

A study of concrete strength and durability by mineral additives optimization in conventional low, medium and high grades concretes

• Języki publikacji: PL EN

Abstrakty

PL

Badania miały na celu wyjaśnienie wpływu trzech dodatków mineralnych – szlamu wapiennego, krzemionkowego popiołu lotnego i pyłu krzemionkowego, zastępujących cement, na wytrzymałość oraz trwałość trzech klas betonu. Zawartość domieszek wynosiła: popiół lotny 5% do 25%, pył krzemionkowy 4% do 10% i szlam wapienny od 2,5% do 20% masy cementu. Stosowano trzy klasy betonu 30 MPa, 50 MPa and 70 MPa. Badano absorpcję wody oraz odporność na migrację jonów chlorkowych w przypadku betonów przy korzystnej zawartości dodatków mineralnych. Na podstawie uzyskanych wyników można stwierdzić, że szlam wapienny z produkcji papieru może być stosowany jako dodatek mineralny do produkcji betonu.

EN

Present investigation is focused on the effect of ternary mixes on strength and durability properties of concrete containing lime sludge, fly ash and silica fume replacing the cement in different grades of concrete. Fly ash Class C is used in this study in various proportions from 5% to 25%, silica fume by 4% and 10% and lime sludge by 2.5 to 20% by mass of cement. This investigation aims at a detailed experimental investigation of ternary mix for 30 MPa, 50 MPa and 70 MPa concrete. The results are compared with those of the ordinary cement concrete. Sorpitivity and RCPT were performed on the optimal dosages of triple blended mix to evaluate the effect on durability. From the results of this work the conclusion can be drawn that paper sludge can be the innovative supplementary cementitious material and can be used for production of concrete.

Słowa kluczowe

PL

beton zwykły; beton średniej klasy; beton wysokiej wytrzymałości; zamiennik cementu; popiół lotny; pył krzemionkowy; szlam wapienny; trwałość; właściwości mechaniczne; absorpcja wody; wnikanie chlorków

EN

plain concrete; medium class concrete; high strength concrete; cement substitute; fly ash; silica fume; lime sludge; durability; mechanical properties; water absorption; chlorides ingress

• Wydawca: Fundacja Cement, Wapno, Beton
• Czasopismo: Cement Wapno Beton
• Rocznik: 2017
• Tom: R. 22/84, nr 4
• Strony: 299--310
• Opis fizyczny: Bibliogr. 22 poz., il., tab.

Twórcy

autor

Ravi Prasad D.

• Department of Civil Engineering, National Institute of Technology, Warangal, India

autor

Praveen Kumar V. V.

• Department of Civil Engineering, National Institute of Technology, Warangal, India

Bibliografia

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• 3. ASTM, C. (1997). 1202. Rapid Chloride Permeability.
• 4. ASTM, C. (2004). 1585. Test methods for measurement of rate of absorption of water by hydraulic cement concretes.
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• 22. S. Yan, K. Sagoe-Crentsil, Properties of wastepaper sludge in geopolymer mortars for masonry applications, J. of Environmental Management, 112, 27 (2012).