Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Laser scabbling of mortars
Highlights This is the third study in a series on laser scabbling. The present study investigates the factors of laser scabbling of mortars. Degree of saturation affects volume removal; however, the relationship is non-linear. The use of PFA, probably due to its effect on permeability, increases volume removal. A higher fine aggregate content also increases volume removal.
Abstract Laser scabbling of concrete is the process by which the surface layer of concrete may be removed through the use of a low power density laser beam. Previous research has suggested that the driving force responsible for laser scabbling is developed within the mortar. The aim of this investigation was to establish the key parameters that influence laser scabbling of mortars. The results show that the removal of free water from mortars prohibits scabbling, but resaturation allows mortar to scabble. A reduced permeability, either due to a reduction in the water/binder ratio or the use of 25% PFA replacement, enhances the scabbling. A higher fine aggregate content increases volume removal and fragment sizes during laser scabbling.
Laser scabbling of mortars
Highlights This is the third study in a series on laser scabbling. The present study investigates the factors of laser scabbling of mortars. Degree of saturation affects volume removal; however, the relationship is non-linear. The use of PFA, probably due to its effect on permeability, increases volume removal. A higher fine aggregate content also increases volume removal.
Abstract Laser scabbling of concrete is the process by which the surface layer of concrete may be removed through the use of a low power density laser beam. Previous research has suggested that the driving force responsible for laser scabbling is developed within the mortar. The aim of this investigation was to establish the key parameters that influence laser scabbling of mortars. The results show that the removal of free water from mortars prohibits scabbling, but resaturation allows mortar to scabble. A reduced permeability, either due to a reduction in the water/binder ratio or the use of 25% PFA replacement, enhances the scabbling. A higher fine aggregate content increases volume removal and fragment sizes during laser scabbling.
Laser scabbling of mortars
Peach, B. (Autor:in) / Petkovski, M. (Autor:in) / Blackburn, J. (Autor:in) / Engelberg, D.L. (Autor:in)
Construction and Building Materials ; 124 ; 37-44
15.07.2016
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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