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Characterization of Mortar with Mineral Additives

Published online by Cambridge University Press:  11 November 2013

M. R. Mejía Durán ,
A. A. Torres Acosta ,
M.G. Arroyo Contreras  and
M. Rendón Belmonte
M. R. Mejía Durán
Affiliation:
Universidad Autónoma de Querétaro, Querétaro, México.
A. A. Torres Acosta
Affiliation:
Instituto Mexicano del Transporte, Sanfandila, Querétaro, México. Universidad Marista de Querétaro, Querétaro, México.
M.G. Arroyo Contreras
Affiliation:
Universidad Autónoma de Querétaro, Querétaro, México.
M. Rendón Belmonte
Affiliation:
Instituto Mexicano del Transporte, Sanfandila, Querétaro, México.
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Abstract

It has been an increase on the number of concrete structures with corrosion induced damage in Mexico in recent years. It is also well known that cathodic protection (CP) is the only method that stops corrosion in an efficient way. Since the 1990’s Florida and other USA states have been installing in concrete pile substructures, in bridges and piers, a three part hybrid galvanic CP system. This hybrid galvanic CP system includes a thermal sprayed part (located at the aerial zone of the pile), a zinc mesh encapsulated in mortar and inside a glass fiber jacket (located at the change in ties zone), and a submerged zinc bulk anode (in the submerged zone). From a previous investigation performed by the present authors, it has been found that the mortar inside the fiberglass form may decrease the mesh anode activation and thus decrease the CP system efficiency. Therefore, this investigation includes an evaluation of different additions placed in mortar to increase its electrical and ionic conductivity to increase the efficiency of the entire hybrid system. Additions include carbon, zinc and alumina powders, and this investigation presents preliminary experimental results obtained from the tested mortars (i.e. mortar physical characterization: electrical resistivity, ultrasonic pulse velocity, and total void content).

Keywords

compositeadditivesGeologic
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1612: Symposium 4B – Concrete and Durability of Concrete Structures , 2013 , IMRC2013-S4B-P028
Copyright
Copyright © Materials Research Society 2013 

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References

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