Tytuł artykułu
Autorzy
Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
The effect of cement composition on linear changes of mortars in alkali-silica reaction investigated by an accelerated method
Języki publikacji
Abstrakty
Omówiono wyniki badań wpływu składu cementu i zawartości alkaliów w cemencie na zmiany liniowe zapraw z reaktywnym kruszywem krzemionkowym przechowywanych w jednonormalnym roztworze wodorotlenku sodu w temperaturze 80°C. W badaniach przeprowadzonych z wykorzystaniem przyspieszonej metody oznaczania reaktywności kruszywa względem alkaliów według ASTM C 1260 zawartość alkaliów w cemencie ma widoczny wpływ na przebieg reakcji alkalia-krzemionka. Zmiany liniowe są tym większe im większa jest zawartość alkaliów w cemencie, a skład i mikrostruktura produktów reakcji alkalia-krzemionka zależą zarówno od zawartości alkaliów w cemencie jak i od składu mineralnego cementu.
The investigation results of the influence of cement composition and alkali content of cement on linear changes of mortars with a reactive silica aggregate, stored in normal sodium hydroxide solution at temperature of 80°C have been discussed. A study, carried out by accelerated test of aggregate alkali reactivity according to ASTM C 1260, has shown that the alkali content in cement exerts a significant influence on the course of alkali-silica reaction. The higher alkali content of cement, the higher linear changes, and the composition and the microstructure of alkali gel depends both on the alkali content and mineral composition of cement.
Wydawca
Czasopismo
Rocznik
Tom
Strony
71--74
Opis fizyczny
Bibliogr. 15 poz., il.
Twórcy
autor
- Politechnika Świętokrzyska
Bibliografia
- 1. ASTM C 1260-94 Standard Test Method for Potential Reactivity of Aggregates (Mortar Bar Method). Annual Book of ASTM Standards, Section 4, vol. 04.02 (Concrete and Aggregate), 1993.
- 2. R.E. Oberholster, G. Davies, Cem.Conc.Res. 16, 181 (1986).
- 3. A.K. Mullick, R.C. Wason, NBRI Tests on Aggregate Containing Strained Quartz. Proc. 10th Int. Conf. on Alkali-Aggregate Reaction in Concrete, Ed. A. Shayan, Melbourne, Australia, pp. 340-347,1996.
- 4. Proc. 11th Int. Conf. on Alkali-Aggregate Reaction in Concrete, Ed. M. A. Berube, B. Fournier, B. Durand, Quebec, Kanada 2000.
- 5. RD. Hooton, C.A. Rogers, Evaluation of Rapid Test Methods for Detecting Alkali-Reactive Aggregates. Proc. 8th Int. Conf. on Alkali-Aggregate Reaction, Ed. K. Okada, Kyoto, s. 439-444, 1989.
- 6. G. Davies, R.E. Oberholster, Cem.Concr.Res. vol. 17, s. 97-107 (1987).
- 7. W.E. Touma i inni, Alkali-Silica Reaction in Portland Cement Concrete – Testing Procedures and Mitigation Methods. Proc. 11th Int. Conf. on Alkali-Aggregate Reaction, Ed. M.A. Berube, Quebec, s. 513-522, 2000.
- 8. P.R. Rangaraju, A Lab Study on Alkali-Silica Reactivity of Quartzite's Used in Concrete Pavements of Minnesota. Proc. 11th Int. Conf. on Alkali-Aggregate Reaction, Ed. M.A. Berube, Quebec, s. 453-462, 2000.
- 9. C. Larive, N. Lourand, Diagnosis of Alkali-Aggregate Reaction and Sulphate Reaction in French Structures. Proc. 9th Int. Conf. on Alkali-Aggregate Reaction, London, s. 587-598,1992.
- 10. A.B. Poole, Alkali Silica Reactivity Mechanism of Gel Formation and Expansion. Proc. 6th Int. Conf. on Alkali-Aggregate Reaction, London, s. 782-789, 1992.
- 11. S. Diamond, Chemistry and Other Characteristics of ASR Gels. Proc. 11th Int. Conf. on Alkali-Aggregate Reaction, Ed. M.A. Berube, Quebec, s. 31-40, 2000.
- 12. A.K. Mullick, G. Samuel, Reaction Products of Alkali-Silica Reaction - A Microstructural Study. Proc. 7th Int. Conf. on Alkali-Aggregate Reaction, Ed. P.E. Grattan-Bellew, Ottawa, Kanada, s. 381-385, 1986.
- 13. M. Regourd-Moranville, Products of Reaction and Petrography Examination. Proc. 8th Int. Conf. on Alkali-Aggregate Reaction, Ed. K. Okada, Kyoto, Japan, s. 445-456, 1989.
- 14. A. Shayan, G. Quick, Microstructure and Composition of AAR Products in Conventional Standard and New Accelerated Testing. Proc. 8th Int. Conf. on Alkali-Aggregate Reaction, Kyoto, s. 475-482 1989.
- 15. Z. Owsiak, The Microstructure of the Alkali-Silica Reaction Products, Proc. Science of Cement and Concrete, Ed. W. Kurdowski, Kraków, s. 221-228, 2001.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BTB2-0015-0038