Detail publikačního výsledku
Properties of cement pastes with zeolite during early stage of hydration
BOHÁČ, M.; KUBÁTOVÁ, D.; NEČAS, R.; ZEZULOVÁ, A.; RYBOVÁ, A.; NOVOTNÝ, R.
Original Title
Properties of cement pastes with zeolite during early stage of hydration
English Title
Properties of cement pastes with zeolite during early stage of hydration
Type
Paper in proceedings (conference paper)
Original Abstract
Properties of cement pastes with various replacement levels of natural zeolite were tested by isothermal calorimetry and rotational rheology. Zeolite from the Eastern Slovakia region was used for tests. Kinetics of exothermic reaction during early stage of hydration were monitored by calorimetry. The role of different replacement level of zeolite on main rheological parameters is discussed in the paper. The onset point of formation of C-S-H products and the main calorimetric peak move to earlier times with increased zeolite content. Zeolite causes acceleration of hydration before the heat flow peak time and the following deceleration proportionally to its content. Zeolite in cement promotes the AFt formation, which increases the elastic response of fresh paste at the beginning of hydration. Trends of G’ and phase angle show that zeolite accelerates the hydration of C3S and early C-S-H formation.
English abstract
Properties of cement pastes with various replacement levels of natural zeolite were tested by isothermal calorimetry and rotational rheology. Zeolite from the Eastern Slovakia region was used for tests. Kinetics of exothermic reaction during early stage of hydration were monitored by calorimetry. The role of different replacement level of zeolite on main rheological parameters is discussed in the paper. The onset point of formation of C-S-H products and the main calorimetric peak move to earlier times with increased zeolite content. Zeolite causes acceleration of hydration before the heat flow peak time and the following deceleration proportionally to its content. Zeolite in cement promotes the AFt formation, which increases the elastic response of fresh paste at the beginning of hydration. Trends of G’ and phase angle show that zeolite accelerates the hydration of C3S and early C-S-H formation.
Keywords
cement, zeolite, hydration, calorimetry, rheology
Key words in English
cement, zeolite, hydration, calorimetry, rheology
Authors
BOHÁČ, M.; KUBÁTOVÁ, D.; NEČAS, R.; ZEZULOVÁ, A.; RYBOVÁ, A.; NOVOTNÝ, R.
RIV year
2017
Released
04.08.2016
Publisher
Elsevier
Book
Procedia Engineering
ISBN
1877-7058
Periodical
Procedia Engineering
Volume
151
Number
1
State
United Kingdom of Great Britain and Northern Ireland
Pages from
2
Pages to
9
Pages count
8
URL
Full text in the Digital Library
BibTex
@inproceedings{BUT127113,
author="Martin {Boháč} and Dana {Kubátová} and Radovan {Nečas} and Anežka {Zezulová} and Alexandra {Rybová} and Radoslav {Novotný}",
title="Properties of cement pastes with zeolite during early stage of hydration",
booktitle="Procedia Engineering",
year="2016",
journal="Procedia Engineering",
volume="151",
number="1",
pages="2--9",
publisher="Elsevier",
doi="10.1016/j.proeng.2016.07.349",
issn="1877-7058",
url="https://www.sciencedirect.com/science/article/pii/S1877705816317374"
}Documents