بررسی حرارت خاک رس برای استفاده بالقوه در ملات
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Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)
Journal : Applied Clay Science, Volume 49, Issue 4, August 2010, Pages 414–419
In this study, raw material compositions, basic physical, mineralogical, microstructural and hydraulic properties of lime mortars used in two selected historic buildings were determined by XRD, SEM-EDS and TGA analyses. The results showed that the mortars were hydraulic due to the use of pozzolanic aggregates. Taking into account the hydraulic characteristics of mortars due to the use of pozzolanic aggregates, the possibility of obtaining hydraulic mortars by using pozzolanic aggregates produced from heated commercial clays was investigated. For this purpose, four clay samples used in the ceramic industry in Turkey were heated at varying temperatures of 400, 450, 500, 550, 600, 800, and 1200 °C with a heating rate of 10 °C/min. Pozzolanic properties of heated clay samples were determined. The results showed that commercial clays studied are well suited for use as pozzolanic aggregates when they are heated between 500 and 700 ºC. This is also confirmed by testing the compressive strengths of the three month aged laboratory-produced mortars that contained thermally treated clay (at 600 °C) as pozzolanic aggregates. Compressive strength of this mortar was around 5 MPa which is satisfactorily high.