Abstract
Bu çalışmada asidik pomza ile üretilen kendiliğinden yerleşen betonun (KYB) taze haldeki özellikleri incelenmiştir. Bu amaçla altı farklı beton karışımı, su/bağlayıcı oranı (çimento + uçucu kül) 0,32 ve slump yayılma çapı 720 ± 20 mm olacak şekilde tasarlanmıştır. İlk karışım tamamen doğal agregadan üretilirken, diğer karışımlarda iri agrega %20, %40, %60, %80 ve %100 oranlarında kullanılan asidik pomza ile değiştirilerek kendiliğinden yerleşen asidik pomzalı betonlar (KYBA) elde edilmiştir. Asidik pomzanın taze beton özelliklerine olan etkisini belirlemek amacıyla karışımlar üzerinde slump yayılma çapı, T500 süresi, V hunisinde boşalma süresi ve L kutusunda yükseklik oranı deneyleri yapılmıştır. Yapılan deney sonuçlarına göre; KYB’de kullanılan asidik pomza miktarı arttıkça işlenebilirliğin arttığı tespit edilmiştir.
References
- BENTUR, A., IGARASHI, S., KOVLER, K., “Prevention of Autogenous Shrinkage in High Strength Concrete by Internal Curing Using Wet Lightweight Aggregates”, Cement and Concrete Research, 31, 1587-1591, 2001.
- KILIC, A., ATIS, C.D., YASAR, E., OZCAN, F., “High-Strength Lightweight Concrete Made with Scoria Aggregate Containimg Mineral Admixtures”, Cement and Concrete Research, 33, 1595-1599, 2003.
- KIM, Y.J., CHOI, Y.W., LACHEMI, M., “Characteristics of Self-Consolidating Concrete Using Two Types of Lightweight Coarse Aggregates”, Construction and Building Materials, 24, 6-11, 2010.
Abstract
Fresh properties of self-compacting concrete (SCC) produced with acidic pumice were investigated in this study. For this purpose, six different concrete mixtures were designed with water / binder ratio (cement + fly ash) of 0.32 and slump flow diameter of 720±20 mm. While first mixture was produced with totally natural aggregate, other mixtures were prepared by acidic pumice replaced with the coarse aggregate in the proportions of 20%, 40%, 60%, 80% and 100% in the mixtures which were self-compacting concrete incorporating acidic pumice (SCCA). Slump flow diameter, T500 flow time, V-funnel flow time and L-box height ratio tests were conducted to determine effects of acidic pumice on fresh properties. According to the test results, it was identified that the workability of SCC increased with increasing the amount of acidic pumice.
References
- BENTUR, A., IGARASHI, S., KOVLER, K., “Prevention of Autogenous Shrinkage in High Strength Concrete by Internal Curing Using Wet Lightweight Aggregates”, Cement and Concrete Research, 31, 1587-1591, 2001.
- KILIC, A., ATIS, C.D., YASAR, E., OZCAN, F., “High-Strength Lightweight Concrete Made with Scoria Aggregate Containimg Mineral Admixtures”, Cement and Concrete Research, 33, 1595-1599, 2003.
- KIM, Y.J., CHOI, Y.W., LACHEMI, M., “Characteristics of Self-Consolidating Concrete Using Two Types of Lightweight Coarse Aggregates”, Construction and Building Materials, 24, 6-11, 2010.
Details
| Subjects | Civil Engineering |
|---|---|
| Journal Section | Civil Engineering |
| Authors | |
| Publication Date | January 31, 2017 |
| Submission Date | October 19, 2016 |
| Acceptance Date | October 19, 2016 |
| Published in Issue | Year 2017 Volume: 6 Issue: 1 |