The effect of relative humidity on the performance of lime-pozzolan mortars

Title: The effect of relative humidity on the performance of lime-pozzolan mortars
Author(s): I. Karatasios, M. Amenta, M. Tziotziou, V. Kilikoglou
Paper category : conference
Book title: 2nd Conference on Historic Mortars - HMC 2010 and RILEM TC 203-RHM final workshop
Editor(s): J. Válek, C. Groot and J.J. Hughes
Print-ISBN: None
e-ISBN: 978-2-35158-112-4
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 1079 - 1086
Total Pages: 8
Nb references: 14
Language: English

Abstract: The development of strength in conservation mortars is of particular significance for new synthesized lime-based mixtures, in terms of practical application, performance requirements and renovation cost of built monuments. In this work, the effect of relative humidity (RH %) on the strength characteristics of lime-natural pozzolan mortars was studied, in three groups of specimens, cured at different humidity conditions (45, 65 and 95 RH %). The compressive strength of the specimens was determined at preset time periods, from 7 days to one year. At the same time periods, the setting products and the microstructure of the mortars were monitored by thermal analysis (DTA/TG) and scanning electron microscopy (SEM/EDX). The results highlight the beneficial effect of elevated humidity on the strength of lime-pozzolan mortars and at the same time some issues related to the reliability and reproducibility of laboratory performance in field works are addressed.

Online publication: 2010-10-25
Publication type : full_text
Public price (Euros): 0.00