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On the testing side : Bulk density and apparent porosity

Introduction

Bulk density and apparent porosity measures are one of the most necessary tests for the characterization of refractory materials. If the true porosity is known, then the determination of the apparent porosity provides access to the true porosity of the product, depending on whether or not it is higher than 45%, classifies the materials into the « dense » or « insulating » category. Here, we are more particularly interested in the measuring method by immersion. Method specified in the standards EN 993-1 et ISO 5017 : Determination of bulk density and apparent porosity for the dense shaped refractory products.

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