THE EFFECT OF POZZOLANIC CEMENT SPESIFICATIONS IN ADDITION TO POLIELECTROLIT ON Na-CMC

Yıl 2006, Sayı: 011, 143 - 154, 15.09.2006

Bülent Yılmaz

Öz

The aim of this study is to examine the effects of Na-CMC on cement as an alternative chemical admixture in the production of cement with metakaolin by using standard cement experiments. The blended cement mortar which was produced by the use of these Na-CMC was affected changes in the physical (specific gravity, fineness, specific surface area, compressive strength) and the chemical (water demand, setting time, soundness) characteristics. The results of the experiments showed that the Na-CMC, can be used in the atio of up to 20% as a blend setting retarder in cements.

Anahtar Kelimeler

Puzzolan, Na-CMC, Clinker, Setting retarder

Na-CMC POLİELEKTROLİT İLAVESİNİN PUZOLANLI ÇİMENTO ÖZELLİKLERİNE ETKİSİ

Öz

Bu çalışmada; çimento üretiminde alternatif kimyasal katkı kaynağı olabilecek Na- CMC’nin çimento özelliklerine etkisi standart çimento deneyleri ile incelenmiştir. Na-CMC katkılı çimento harçlarının, fiziksel (özgül ağırlık, incelik, özgül yüzey, dayanım) ve kimyasal (su ihtiyacı, priz süresi, hacim genleşmesi) özellikleri kimyasal katkıdan etkilenmiştir. Deney sonuçlarından, % 20 puzolanik katkı oranına kadar Na-CMC çimentolarda priz geciktirici katkı olarak kullanılabileceği tespit edilmiştir.

Anahtar Kelimeler

Puzolan, Na-CMC, Klinker, Priz geciktirici

Kaynakça

• [1] Ernst Worrell, Nathan Martin and Lynn Price “Potentials for energy efficiency improvement in the US cement industry” Energy, Volume 25, Issue 12, December 2000, Pages 1189-1214
• [2] Shiqun Li and Della M. Roy “Investigation of relations between porosity, pore structure, and C1− diffusion of fly ash and blended cement pastes” Cement and Concrete Research, Volume 16, Issue 5, September 1986, Pages 749-759
• [3] Sersale G. Prigione “Portland-zeolite-cement for minimizing alkali-aggregate expansion ” Cement and Concrete Research, Volume 17, Issue 3, May 1987, Pages 404-410R.
• [4] V. Saraswathy, S. Muralidharan, K. Thangavel and S. Srinivasan “Influence of activated fly ash on corrosion-resistance and strength of concrete” Cement and Concrete Composites, Volume 25, Issue 7, October 2003, Pages 673-680
• [5] Khandaker M. Anwar Hossain “Properties of volcanic pumice based cement and lightweight concrete ” Cement and Concrete Research, Volume 34, Issue 2, February 2004, Pages 283-291
• [6] X. Fu, Y. Wang, S. Huang, X. Hou and W. Hou “The influences of siliceous waste on blended cement properties” Cement and Concrete Research, Volume 33, Issue 6, June 2003, Pages 851-856
• [7] Xinghua Fu, Zhi Wang, Wenhong Tao, Chunxia Yang, Wenping Hou, Youjun Dong and Xuequan Wu “Studies on blended cement with a large amount of fly ash” Cement and Concrete Research, Volume 32, Issue 7, July 2002, Pages 1153-1159
• [8] Chindaprasirt, S. Homwuttiwong and V. Sirivivatnanon “Influence of fly ash fineness on strength, drying shrinkage and sulfate resistance of blended cement mortar” Cement and Concrete Research, Volume 34, Issue 7, July 2004, pages 1087- 1092P.
• [9] V. Kanna, R. A. Olson and H. M. Jennings “Effect of shrinkage and moisture content on the physical characteristics of blended cement mortars” Cement and Concrete Research, Volume 28, Issue 10, October 1998, Pages 1467-1477
• [10] Ş. Erdoğdu and Ş. Kurbetci “Influence of cement composition on the early age flexural strength of heat-treated mortar prisms” Cement and Concrete Composites, Volume 27, Issues 7-8, August-September 2005, Pages 818-822
• [11] B.Y. Pekmezci and S.Akyüz “Optimum usage of a natural pozzolan for the maximum compressive strength of concrete ” Cement and Concrete Research, Volume 34, Issue 12, December 2004, Pages 2175-2179
• [12] L. Turanli, B. Uzal and F. Bektas “Effect of material characteristics on the properties of blended cements containing high volumes of natural pozzolans” Cement and Concrete Research, Volume 34, Issue 12, December 2004, Pages 2277-2282
• [13] Ramachadran V.S. (Ed) “Concrete Admixtures Handbook” Noyes Publications, New Jersey, USA, 1995
• [14] M.S. Akman “ Yüksek performanslı betonların taze haldeki özellikleri üzerine katkı maddelerinin etkisi” Sika Teknik Bülteni, 2000
• [15] N.Parlak, M.S. Akman, “Lignosülfanatların üretimi, özellikleri ve süper akışkanlaştırıcı olarak geliştirilmesi” Sika Teknik Bülteni, 2002
• [16] A.R. Sağlam, M.S. Akman, “ Yüksek performanslı betonlarda işlenebilme açısından çimento ile süperakışkanlaştırıcı katkının uyumu” Sika Teknik Bülteni, 2002
• [17] Birchall, A.J. Howard, K. Kendall, Nature 289 (5769) (1981) 388.
• [18] Moriyoshi, I. Fukai, M.A. Takeuchi, Nature 344 (6263) (1990) 203.
• [19] M. Darbik, R.C.T. Slade, Br. Ceram. Trans. 94 (1995) 224.
• [20] P. C. Mishra, V. K. Singh, K. K. Narang and N. K. Singh Effect of carboxymethylcellulose on the properties of cement Materials Science