Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Blended cements produced with synthetic zeolite made from industrial by-product / ; Sudėtiniai cementai, pagaminti su sintetiniu ceolitu, gautu iš pramoninės atliekos.
Zeolites are appropriate supplementary cementitious materials in cement and concrete industry. In the present work synthetic zeolites were used as supplementary material in hardened cement paste and some properties as well as its influence on Portland cement hydration was determinate. X-ray powder diffraction, scanning electronic microscopy and energy-dispersive X-ray spectroscopy, FTIR spectroscopy were used as investigation methods. The compressive strength of hardened cement paste was measured at day 3, 28 and 60. The instrumental analysis showed that zeolite A(Na) dominates and unreacted Al(OH)3 remains in the investigated synthetics zeolites, made from thermal and mechanical treated AlF3 production waste. The Chapelle test showed that both zeolites have good pozzolanic properties. The samples compressive strength remained close to the control samples compressive strength, reducing the amount of Portland cement, i. e., changing it by zeolite. After 60 days, the compressive strength was the best in the samples where 5 % of Portland cement was replaced by the synthetic zeolite. The compressive strength of the samples increased by 9% compared with control samples. This research provides a real opportunity to save cement thus disposing the waste.
Blended cements produced with synthetic zeolite made from industrial by-product / ; Sudėtiniai cementai, pagaminti su sintetiniu ceolitu, gautu iš pramoninės atliekos.
Zeolites are appropriate supplementary cementitious materials in cement and concrete industry. In the present work synthetic zeolites were used as supplementary material in hardened cement paste and some properties as well as its influence on Portland cement hydration was determinate. X-ray powder diffraction, scanning electronic microscopy and energy-dispersive X-ray spectroscopy, FTIR spectroscopy were used as investigation methods. The compressive strength of hardened cement paste was measured at day 3, 28 and 60. The instrumental analysis showed that zeolite A(Na) dominates and unreacted Al(OH)3 remains in the investigated synthetics zeolites, made from thermal and mechanical treated AlF3 production waste. The Chapelle test showed that both zeolites have good pozzolanic properties. The samples compressive strength remained close to the control samples compressive strength, reducing the amount of Portland cement, i. e., changing it by zeolite. After 60 days, the compressive strength was the best in the samples where 5 % of Portland cement was replaced by the synthetic zeolite. The compressive strength of the samples increased by 9% compared with control samples. This research provides a real opportunity to save cement thus disposing the waste.
Blended cements produced with synthetic zeolite made from industrial by-product / ; Sudėtiniai cementai, pagaminti su sintetiniu ceolitu, gautu iš pramoninės atliekos.
Vaičiukynienė, Danutė, (Autor:in) / Vaitkevičius, Vitoldas, (Autor:in) / Kantautas, Aras, (Autor:in) / Kartovickis, Aurelijus, (Autor:in) / Rudžionis, Žymantas (Autor:in)
01.01.2015
Materials science = Medžiagotyra., Kaunas : KTU, 2015, vol. 21, no. 1, p. 136-142. ; ISSN 1392-1320 ; eISSN 2029-7289
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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