Abstract
The concrete samples with various erosion states simulating road or bridge damage were disintegrated by pure continuous water jets generated from pressure 380 MPa and by pulsing water jets generated from low pressure 30 MPa. The erosion states of samples were prepared applying several laboratory techniques simulating the concrete aging under the conditions corresponding to the use in practice. The influence of the erosion state on the disintegration rate was tested because water jet techniques are very effective in selective disintegration of damaged concrete without significant erosion of the unbroken concrete unlike pneumatic drills or other impacting machines usually used for such a work. The comparison of both the depth of penetration and the ratio of volume disintegration regarding the input power is performed. All results are discussed regarding their application in practice and further development of special routings.
Highlights
The research presented in this paper is aimed at better preparation of surfaces during the repair actions on concrete constructions, especially concrete road surfaces and bridges
The concrete samples with various erosion states simulating road or bridge damage were disintegrated by pure continuous water jets generated from pressure 380 MPa and by pulsing water jets generated from low pressure 30 MPa
It is supposed that together with information about climate changes and evaluation of action of those changes it will be possible to repair and protect concrete structures more efficiently. Both the theoretical study presented in this paper and the subsequent water jet efficiency analysis is based on theories prepared by Hlaváč (1992)
Summary
The research presented in this paper is aimed at better preparation of surfaces during the repair actions on concrete constructions, especially concrete road surfaces and bridges. It is supposed that together with information about climate changes and evaluation of action of those changes (like described by Laurinavičius et al 2007; Juknevičiūtė, Laurinavičius 2008) it will be possible to repair and protect concrete structures more efficiently. Both the theoretical study presented in this paper and the subsequent water jet efficiency analysis is based on theories prepared by Hlaváč (1992).
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
