NANOINDENTATION MAPPING OF MECHANICAL PROPERTIES OF CEMENT PASTE BLENDED WITH SLAG

Author(s): X. Gao and Y. Wei
Book Title: RILEM International Symposium on Concrete Modelling - CONMOD 2014
Editor: Kefei Li, Peiyu Yan and Rongwei Yang
ISBN: 978-2-35158-139-1
e-ISBN: 978-2-35158-140-7
Publisher: RILEM Publications SARL
Publication year: 2015
Pages: 227-235
Total Pages: 9
Language: English

Abstract: The macroscopic performance of cementitious materials is determined by their nanostructure characteristics. Nanoindentation is an important and unique technique for characterizing the mechanical properties of materials at nano- and micro-scale levels. It has currently fuelled growing interests in measuring and quantifying the microstructure as well as the properties of hardened cement paste. In this study, the nano-scale properties of cement pastes blended with slag cement were tested via the grid-nanoindentation technique. The phase distribution, the volume fraction, the mechanical properties of hydration products and the packing density of globule in C-S-H gel are calculated on the basis of a large number of indentation data using the maximum-likelihood algorithm for deconvolution. The mechanical properties that obtained from nanoindentation tests are used to map the microstructure of the hydrated slag cement paste.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00