Remanent Magnetization in Portland-Cement-Based Materials

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The purpose of this research is to demonstrate the possibility of applying one geophysical method to studying untraditional systems as is the case with Portland-cement-based materials. The research demonstrates how conventional paleomagnetic methodology can be employed in studying the mode of magnet...

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Detalles Bibliográficos
Autores principales:	Bidegain, Juan Carlos, Sinito, Ana M., Rodríguez, M. E.
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	1999
Materias:	Geofísica Ciencias Exactas Paleomagnetic methods industrial materials chemistry iron-bearing admixtures water/cement ratio furnace slag magnetic susceptibility remanent magnetization
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/139149
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-139149
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Geofísica Ciencias Exactas Paleomagnetic methods industrial materials chemistry iron-bearing admixtures water/cement ratio furnace slag magnetic susceptibility remanent magnetization
spellingShingle	Geofísica Ciencias Exactas Paleomagnetic methods industrial materials chemistry iron-bearing admixtures water/cement ratio furnace slag magnetic susceptibility remanent magnetization Bidegain, Juan Carlos Sinito, Ana M. Rodríguez, M. E. Remanent Magnetization in Portland-Cement-Based Materials
topic_facet	Geofísica Ciencias Exactas Paleomagnetic methods industrial materials chemistry iron-bearing admixtures water/cement ratio furnace slag magnetic susceptibility remanent magnetization
description	The purpose of this research is to demonstrate the possibility of applying one geophysical method to studying untraditional systems as is the case with Portland-cement-based materials. The research demonstrates how conventional paleomagnetic methodology can be employed in studying the mode of magnetic recording in present-day industrial materials. Portland-cement admixtures such as fly ashes and furnace slags should be discriminated, because those particles interact in soils and sediments in nature. Moreover, a better undertanding of magnetic remanent acquisition in model materials can serve to improve the interpretation of magnetic remanent acquisition in natural rocks formed a long time ago. The magnetic constituents of Portland-cement paste and mortar acquire a magnetic remanence due to their alignment with the earth's magnetic field at the casting place. This magnetization can be measured using ordinary paleomagnetic techniques. The alignment of the individual magnetic particles accounts for the intensity of the magnetic remanence, which can be increased by adding water and by vibration before setting and hardening. Blast furnace slag admixtures also add to the enhancement of the intensity of remanence. The magnetization of Portland-cement-based materials shows a near linear relationship with the water /cement (w/c) ratios employed in the experimental work; the w/c ratios range between 0.2 – 0.6 in pastes and 0.3 – 0.6 in mortar. Stable remanent magnetization was obtained during the first seven days of setting and hardening, a period necessary for magnetic particles to become locked parallel to the earth's magnetic field. The stability of magnetic remanence predicts the usefulness of the methodology in studying the properties of Portland cement and particularly in the control of iron-bearing admixtures.
format	Articulo Articulo
author	Bidegain, Juan Carlos Sinito, Ana M. Rodríguez, M. E.
author_facet	Bidegain, Juan Carlos Sinito, Ana M. Rodríguez, M. E.
author_sort	Bidegain, Juan Carlos
title	Remanent Magnetization in Portland-Cement-Based Materials
title_short	Remanent Magnetization in Portland-Cement-Based Materials
title_full	Remanent Magnetization in Portland-Cement-Based Materials
title_fullStr	Remanent Magnetization in Portland-Cement-Based Materials
title_full_unstemmed	Remanent Magnetization in Portland-Cement-Based Materials
title_sort	remanent magnetization in portland-cement-based materials
publishDate	1999
url	http://sedici.unlp.edu.ar/handle/10915/139149
work_keys_str_mv	AT bidegainjuancarlos remanentmagnetizationinportlandcementbasedmaterials AT sinitoanam remanentmagnetizationinportlandcementbasedmaterials AT rodriguezme remanentmagnetizationinportlandcementbasedmaterials
bdutipo_str	Repositorios
_version_	1764820457138159617

Remanent Magnetization in Portland-Cement-Based Materials

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