Portland Cement Hydration Behavior at Low Temperatures: Views from Calculation and Experimental Study
Open Access
- 1 January 2017
- journal article
- Published by Hindawi Limited in Advances in Materials Science and Engineering
- Vol. 2017, 1-9
- https://doi.org/10.1155/2017/3927106
Abstract
Environmental condition affects the property of construction materials. This study gives an initial understanding of Portland cement hydration under low temperatures from the views of laboratory experiments (including electrical resistivity, degree of hydration (DoH), and maturity) as well as thermodynamic calculation. The hydrates of Portland cement at the given period were detected with X-ray diffraction (XRD), and their microstructure was observed by scanning electron microscope (SEM). Experiment result (i.e., DoH and electrical resistivity) indicated that the hydration of Portland cement was delayed by low temperature without hydration stopping at −5°C. Based on a basic kinetics model, the thermodynamic calculation predicted that the final hydrate differs in dependence on environmental temperatures. The mechanical behavior trend of Portland cement paste affected by low temperatures potentially is linked to the appearing of aluminate compounds and reduction of portlandite.Keywords
Funding Information
- National Natural Science Foundation of China (51708045, 2014BAG05B04)
This publication has 18 references indexed in Scilit:
- Influence of low temperature on dynamic behavior of concreteConstruction and Building Materials, 2016
- Behavior of fresh and hardened concretes with antifreeze admixtures in deep-freeze low temperatures and exterior winter conditionsConstruction and Building Materials, 2015
- The effects of urea on strength gaining of fresh concrete under the cold weather conditionsConstruction and Building Materials, 2014
- Formation of ettringite in Portland cement/calcium aluminate cement/calcium sulfate ternary system hydrates at lower temperaturesConstruction and Building Materials, 2012
- Thermodynamic modelling of the effect of temperature on the hydration and porosity of Portland cementCement and Concrete Research, 2008
- Temperature effect on the pore solution chemistry in contaminated cementsMagazine of Concrete Research, 1997
- The properties of concrete at very low temperaturesMaterials and Structures, 1989
- Mechanical Properties of Concrete at Low TemperatureJournal of Cold Regions Engineering, 1988
- Principles underlying the steam curing of concrete at atmospheric pressureMagazine of Concrete Research, 1951
- Steam curing of concreteMagazine of Concrete Research, 1949