Roads and Bridges - Drogi i Mosty
21, 2, 2022, 167-178

Water absorption kinetics of bitumen modified cement mortars

Liudmyla Trykoz Mail
Ukrainian State University of Railway Transport, Department of Building Materials, Constructions and Structures, 7 Feuerbach Sq., Kharkiv, 61050, Ukraine
Maryna Rezunenko Mail
Ukrainian State University of Railway Transport, Department of Higher Mathematics and Physics, 7 Feuerbach Sq., Kharkiv, 61050, Ukraine
Oksana Pustovoitova Mail
O.M.Beketov National University of Urban Economy, Department of Building Constructions, 17 Marshal Bazhanov St., Kharkiv, 61002, Ukraine
Victoria Semenova-Kulish Mail
Ukrainian State University of Railway Transport, Department of Mechanical Engineering and Technical Service of Machines, 7 Feuerbach Sq., Kharkiv, 61050, Ukraine
Dmytro Borodin Mail
National Technical University “Kharkiv Polytechnic Institute”, Department of Machine Components and Hydropneumatic Systems, 2 Kyrpychova St., Kharkiv, 61002, Ukraine
Published: 2022-06-30

Abstract

Concrete permeability is a major factor that affects durability and reliability of structures – bridges, tunnels, culvert pipes, etc. It is important to identify effective methods of protection of such structures against water penetration, for example by using a modifying substance. Samples of cement mortar composites were used for water absorption simulation. Bitumen emulsion was used as a modifying agent. According to the water absorption kinetics, the following parameters of the pore microstructure of the mortar composite were estimated: the index of mean size of open capillary pores, closed porosity, and the index of size uniformity. The research has shown that the addition of bitumen emulsion decreases the pore space and macrocapillaries (from 23.91% to 6.61%), water absorption (3 times), and the index of mean size of open capillary pores (from 0.69 to 0.3) of modified mortars.

Keywords


bitumen emulsion, cement mortar, concrete permeability, porosity, water absorption.

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References


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Water absorption kinetics of bitumen modified cement mortars

  
Trykoz, Liudmyla et al. Water absorption kinetics of bitumen modified cement mortars. Roads and Bridges - Drogi i Mosty, [S.l.], v. 21, n. 2, p. 167-178, jun. 2022. ISSN 2449-769X. Available at: <>. Date accessed: 19 Aug. 2022. doi:http://dx.doi.org/10.7409/rabdim.022.010.