Peer-reviewed articles 17,970 +



Title: POSSIBILITY OF ALKALI ATTACK TO CONCRETE PAVEMENT FROM EXTERNAL SOURCES

POSSIBILITY OF ALKALI ATTACK TO CONCRETE PAVEMENT FROM EXTERNAL SOURCES
J. Grosek; B. Dohnalkova; J. Hegrova; T. Zavrel; O. Machel
1314-2704
English
21
1.1
• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Recently, there have been cases of lower durability related to concrete pavements in the transport infrastructure in the Czech Republic. One of the main causes seems to be the increased amount of alkalis in the concrete, which may not have come only from individual components or through winter maintenance. This paper describes a research activity which deals with possibilities of alkali attack from the surrounding environment. The pilot testing provides valuable information on alkalis concentrations in real conditions. Soil and groundwater samples around the concrete pavement were taken from a highway section and the results of laboratory testing according to selected procedures were compared. The authors try to find a relationship between expansive reactions and the effect of the external environment. The determination of alkali concentration in different media, where sodium and potassium here critical for concrete, was derived from the conclusions and will be important for the use of measures in practice.
conference
21st International Multidisciplinary Scientific GeoConference SGEM 2021
21st International Multidisciplinary Scientific GeoConference SGEM 2021, 16 - 22 August, 2021
Proceedings Paper
STEF92 Technology
SGEM International Multidisciplinary Scientific GeoConference
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci
83-90
16 - 22 August, 2021
website
cdrom
7744
concrete pavement; soil; alkalis; groundwater; expansive reactions