The Effect of Relative Humidity on the Performance of Lime-Pozzolan Mortars

  • Ioannis Karatasios
  • Maria Amenta
  • Maria Tziotziou
  • Vassilis Kilikoglou
Conference paper
Part of the RILEM Bookseries book series (RILEM, volume 7)

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 development of compressive strength of the specimens was determined at preset time periods, from 7 days to 1 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 work in the field are addressed.

Keywords

Compressive Strength Hydrated Product Calcium Silicate Hydrate Strength Development Calcium Aluminate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© RILEM 2012

Authors and Affiliations

  • Ioannis Karatasios
    • 1
  • Maria Amenta
    • 1
  • Maria Tziotziou
    • 1
  • Vassilis Kilikoglou
    • 1
  1. 1.Laboratory of Archaeological Materials, Institute of Materials ScienceNational Centre for Scientific Research “Demokritos”AthensGreece

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