Long term study of hardened cement pastes containing silica fume and fly ash

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• 作者：Vili Lilkov^a ; Ivan Rostovsky^b ; Ognyan Petrov^c ; ^{opetrov@dir.bg" class="auth_mail} ; Yana Tzvetanova^c ; Plamen Savov^a
• 关键词：Silica fume ; Fly ash ; Pozzolit ; Cement paste ; Hydration products
• 刊名：Construction and Building Materials
• 出版年：16 June, 2014
• 年：2014
• 卷：60
• 期：Complete
• 页码：48-56
• 全文大小：1734 K

文摘

The hydration products in cements with individual addition of SF and two types of FA from TEPS and mixtures of FA and SF are studied. The phase transformations are followed in a 4-year period. Fly ashes from TEPS 鈥淏obov Dol鈥?and TEPS 鈥淧ernik鈥? silica fume from the metallurgical plant 鈥淜remikovtsi鈥? and their mixed product Pozzolit are suitable pozzolanic additions to cement as they participate actively in the processes of formation of hardened cement paste. The above additives stimulate the formation of hydrate products with temperature of dehydration above 600 掳小, more clearly expressed after the 48th day of hydration.