Effect of Silica Fume Addition on Characteristics of Pozzolanic Cement Pastes Containing Burnt Clay
| المصدر: | مجلة العلوم الإنسانية والتطبيقية |
|---|---|
| الناشر: | الجامعة الأسمرية الإسلامية زليتن - كليتى الآداب والعلوم |
| المؤلف الرئيسي: | Al Falous, Khaled Ahmed (Author) |
| المجلد/العدد: | ع26 |
| محكمة: | نعم |
| الدولة: |
ليبيا |
| التاريخ الميلادي: |
2014
|
| الصفحات: | 15 - 28 |
| رقم MD: | 829323 |
| نوع المحتوى: | بحوث ومقالات |
| قواعد المعلومات: | HumanIndex |
| مواضيع: | |
| رابط المحتوى: |
عدد مرات التحميل
4
| المستخلص: |
Prepared pastes of pozzolanic ordinary Portland cement (OPC) blend containing 30% burnt clay (B.C.) admixed with 2.5 and 5% silica fume (SF) to improve the physicomechanical characteristics were made using an initial water/solid ratio of 0.30 by weight and hydrated for 1, 3, 7, 28 and 90 days. The hardened pozzolanic cement pastes were subjected to compressive strength and hydration kinetics tests. The results of DSC and XRD studies indicated the formation and later stabilization of calcium silicates hydrates (CSH) and calcium aluminosilicate hydrates (C3ASH4 and C2ASH8) as the main hydration products in addition to free calcium hydroxide (CH). Scanning electron microscopic (SEM) examination of the pozzolanic cement pastes made of OPC-.BC. mixes possesses a more denser structure than that of the neat OPC paste. Furthermore, the addition of silica fume resulted in a further densification of the microstructure of the hardened OPC-B.C.-SF pastes; this is reflected on the observed improvement in the compressive strength values at all ages of hydration. |
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عناصر مشابهة
-
Mechanical and Hydration Characteristics of Blended Cement Pasts Containing Burnt Clay
بواسطة: Al Falous, Khaled Ahmed منشور: (2012) -
The Effect of Calcium Hydroxide and By-Pass Cement Dust on Burnt Clay
بواسطة: Al Falous, Khaled Ahmed منشور: (2011) -
SILICA FUME AS AN INGREDIENT IN BLENDED CEMENTS
بواسطة: Heikal, Mohamed Ahmed Hassan منشور: (1992) -
THE PHYSICO-CHEMICAL CHARACTERISTICS OF AUTOCLAVED POZZOLANIC CEMENT PASTES
بواسطة: Kandeel, Ayman Mohamed Ebraheem منشور: (1991) -
Effect of Mixing Time on the Mechanical Properties of Pervious Concrete Containing Silica Fume
بواسطة: النسور، مصطفى محمد منشور: (2023)
