Publication detail
Synthesis, moisture resistance, thermal, chemical and SEM analysis of macro-defect-free (MDF) cements
Mojumdar S.C., Chowdhury B.,Varshney K.G., Mazanec K.
Original Title
Synthesis, moisture resistance, thermal, chemical and SEM analysis of macro-defect-free (MDF) cements
English Title
Synthesis, moisture resistance, thermal, chemical and SEM analysis of macro-defect-free (MDF) cements
Type
journal article - other
Language
Czech
Original Abstract
The results, presented here discusses the Macro-Defect-Free (MDF) cements prepared from the blends of sulfoaluminate ferrite belite (SAFB) clinkers, ordinary Portland cement (OPC), Al2O3 and poly(butyl acrylate) (PBA), styrene/acrylonitrile co-polymer (SACP) or sodium polyphosphate (poly-P). Though MDF cements have several attractive properties, their utilization has been limited due to the insufficient moisture resistance. It is a very challenging task for scientists and technologist to improve the moisture resistance of MDF cements. Therefore, the new MDF cements were subjected to various moist atmospheres to investigate their moisture resistance. The most significance of this work is the improvement of moisture resistance of the studied MDF cements. The aim of this work was to understand the effects of polymers, Al2O3, OPC and SAFB clinkers in the raw mix and delayed drying on MDF cements and also on their subsequent moisture resistance and thermal stability as well as to discover the new properties of these materials. Their chemical, thermal and scanning electron microscopic (SEM) analysis was also carried out before and after exposure to moisture. PBA was found to be the most suitable polymer for MDF cement synthesis, since the samples containing PBA showed the highest resistance to moisture. There are three main temperature regions on TG curves of both series of MDF cement samples. The significant differences in SEM of MDF cements before and after moisture attack and with different polymers were observed.
English abstract
The results, presented here discusses the Macro-Defect-Free (MDF) cements prepared from the blends of sulfoaluminate ferrite belite (SAFB) clinkers, ordinary Portland cement (OPC), Al2O3 and poly(butyl acrylate) (PBA), styrene/acrylonitrile co-polymer (SACP) or sodium polyphosphate (poly-P). Though MDF cements have several attractive properties, their utilization has been limited due to the insufficient moisture resistance. It is a very challenging task for scientists and technologist to improve the moisture resistance of MDF cements. Therefore, the new MDF cements were subjected to various moist atmospheres to investigate their moisture resistance. The most significance of this work is the improvement of moisture resistance of the studied MDF cements. The aim of this work was to understand the effects of polymers, Al2O3, OPC and SAFB clinkers in the raw mix and delayed drying on MDF cements and also on their subsequent moisture resistance and thermal stability as well as to discover the new properties of these materials. Their chemical, thermal and scanning electron microscopic (SEM) analysis was also carried out before and after exposure to moisture. PBA was found to be the most suitable polymer for MDF cement synthesis, since the samples containing PBA showed the highest resistance to moisture. There are three main temperature regions on TG curves of both series of MDF cement samples. The significant differences in SEM of MDF cements before and after moisture attack and with different polymers were observed.
Key words in English
SEM - MDF cements - moisture resistance - chemical - polymers - TG-DTA analysis
Authors
Mojumdar S.C., Chowdhury B.,Varshney K.G., Mazanec K.
Released
9. 1. 2004
Publisher
Springer Science+Business Media B.V.
ISBN
1388-6150
Periodical
Journal of Thermal Analysis and Calorimetry
Year of study
78
Number
1
State
Hungary
Pages from
135
Pages to
144
Pages count
10
BibTex
@article{BUT46027,
author="Karel {Mazanec}",
title="Synthesis, moisture resistance, thermal, chemical and SEM analysis of macro-defect-free (MDF) cements",
journal="Journal of Thermal Analysis and Calorimetry",
year="2004",
volume="78",
number="1",
pages="10",
issn="1388-6150"
}