𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Effects of low calcium fly ash on sulfate resistance of OPC cement

✍ Scribed by Fabián Irassar; Oscar Batic

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
557 KB
Volume
19
Category
Article
ISSN
0008-8846

No coin nor oath required. For personal study only.

✦ Synopsis

Low calcium fly ash is a good pozzolan to improve sulfate resistance of OPC cement. Benefical effects produced by this pozzolan on OPC are studied in the present paper. Results of sulfate resistance evaluated by Koch & Steinegger method are presented for four OPC + fly ash cements. The changes in mineralogical composition of mortar are analysed by XRD, SEM and EDAX. Fly ash addition delays ettringite formation-cracking phenomenon and decreases the acid attack.

📜 SIMILAR VOLUMES

Effects of fly ash and silica fume on th
Effects of fly ash and silica fume on the resistance of mortar to sulfuric acid and sulfate attack
✍ Kazuyuki Torii; Mitsunori Kawamura 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 740 KB

## ABSTRCT Changes in physical and chemical properties in the mortars with different replacements by fly ash and silica fume when immersed in 2 % H2SO4, 10 % Na2SO4 and 10% MgSO4 solutions for 3 years were investigated. The long-term exposure test data showed that the replacement of portland ceme