Affiliation:
1. Institute for Materials Science and Center for Nanointegration Duisburg‐Essen (CENIDE), Faculty of Engineering, University of Duisburg‐Essen 45141 Essen Germany
Abstract
AbstractA series of tests of compression strength and fracture toughness of hardened cement paste (cement stone) was carried out. The compression strength was tested on cubes with side lengths of 10, 20, 30 and 40 mm. Fracture toughness was measured on compact tension (CT) specimens with dimensions commonly used in metallurgy; two different thicknesses were used (h x l x b: 50 x 48 x 3 mm3 and 50 x 48 x 8 mm3). A particularly stiff piezo‐controlled test frame was used as testing device. The different thicknesses of the specimens allow the investigation of a possible size effect in toughness. In a Weibull statistical evaluation, the scatter of the strength results is compared with the scatter of the measured toughnesses. It could be shown that the fracture toughness results are as reliable as the strength results and the method is a useful addition to the research on fracture of binders.
Subject
General Earth and Planetary Sciences,General Environmental Science
Reference17 articles.
1. US Geological Survey. (1. Feb.2023).Weltweite Produktion von Zement im Zeitraum von 1995 bis 2022 (in Milliarden Tonnen) [Graph]. In Statista.https://de.statista.com/statistik/daten/studie/1320914/umfrage/weltweite-produktion-von-zement/[accessed on: 05 Apr. 2023]
2. DIN EN 196-1:2016-11(2016)Prüfverfahren für Zement - Teil 1: Bestimmung der Festigkeit; Deutsche Fassung EN_196-1:2016. Beuth Berlin.
3. Size effect on cubic and prismatic compressive strength of cement paste