MATEC Web Conf.
Volume 116, 20176th International Scientific Conference “Reliability and Durability of Railway Transport Engineering Structures and Buildings” (Transbud-2017)
|Number of page(s)||7|
|Section||Construction Materials, Protection and Repair of Structures and Buildings|
|Published online||10 July 2017|
The properties of concrete mixes, pumped over long distances
Kharkiv National University of Civil Engineering and Architecture, Department of Physical and Chemical Mechanics and Technologies of Building Materials and Products, Sumska st. 40, 61002 Kharkiv, Ukraine
* Corresponding author: firstname.lastname@example.org
The influence of technological factors, chemical and mineral admixtures on pumping and thixotropic properties of concrete mixtures was studied. The causes of the loss of pressure when pumping concrete mixtures through channels of a complex section are established. Existing methods for calculating pressure loss during pumping of concrete mixtures are considered. Some results of pumping tests of modern concrete mixtures are given. It is shown that the use of powdered concrete with high mobility for pumping over long distances during the filling of long-span metal or bridge structures, concreting in tunnels where injection pressure is limited, can be the only solution in the implementation of these tasks.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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