HACETTEPE UNIVERSITY, ANKARA/TURKEY

Use of ultrafine marble and brick particles as alternative raw materials for clinkerization

This article presents the results of research on different properties of Ultrafine Marble Particles (UMP), Ultrafine Brick Particles (UBP) and of cement clinker. UMP and UBP are mixed at three different ratios (79:21, 77:23 and 81:19) to form alternative raw meal. These samples are burned at 1450°C for 30 min to produce cement clinker. The experiments included physical, pozzolanic and rheological properties of UMP and UBP according to up-to-date standards and literature knowledge.

1 Introduction

Scientists have long been investigating alternative methods to control the cement quality for chemical reasons and to develop new methods to provide understanding of the chemical compositions of cement easily. The investigations focussed on such topics as hydraulic modulus (HM), silica modulus (SM), alumina-iron ratio (AR), lime saturation (LS or “free lime”) and lime saturation factor (LSF) as well as the chemical composition of cement.

Today, OPC clinker shows a range, respectively on the hydraulic modulus between 1.7 and 2.3, and of silica from 2.2 to 2.7, an alumina-iron...

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