Received 17.06.2025
Revised 21.10.2025
Accepted 15.12.2025
Retrieved from Iss. 118, P. 2, 2025
Pages 80 -92
Abstract
The work is dedicated to conducting research on the condition of the bridge structures of the Povitroflotsky Avenue bridge over the Lybid River in Kyiv. To achieve this, methods of rejected assessment of reinforced concrete structures of the bridge deck, as well as express techniques of microstructural, micro-X-ray spectroscopic, and fractographic analysis, were applied. The aim of the work is to investigate and identify the causes of the emergency destruction of bridge structures over the Lybid River. Object of study: the deck structures of the bridge. As a result of the research, it was found that in the concrete composition, at the boundary of the sand aggregate and cement stone, there is an increased amount of alkaline metals and halogens, which exceeds the requirements of national standards several times. It was established that the average concentration of sulfur oxide is 4.93 % (by weight). There is a local increase in the concentration of sulfur oxide to 6.15 % (by weight), which significantly exceeds the normative value of 3.5% (by weight). In addition, a significant percentage of carbon in the structure of cement stone in all samples indicates its carbonation, which further reduces the mechanical properties of the concrete in the bridge structures. To prevent cases of premature destruction of concrete in bridges, overpasses, and highways, it is suggested to monitor the quality of concrete in existing structures and during the construction of new objects using the express method of microstructural analysis. Additionally, to visually monitor the speed of corrosion processes, a gypsum marker should be installed on a crack in the support column of the bridge from the side of the sidewalk. To eliminate the active impact of halogens on structural transformations in operating concrete, it is recommended to investigate the possibility of using less aggressive substances that would have a smaller impact on corrosion processes in concrete and reinforcement in reinforced concrete structures but effectively contribute to cleaning sidewalks and roadways from snow.
Keywords:
bridge deck structures, beam bridges, concrete, cement stone corrosion, microstructural analysis, micro-X-ray spectroscopic analysis, alkaline-silica reaction, emergency destruction, concrete durability forecastingZhang Y. Study on the corrosion change law and prediction model of cement stone in oil wells with CO 2 corrosion in ultra-high temperature sour gas wells Yihan Zhang, Mingbiao Xu, Jianjian Song, Chunli Wang, Xiaoliang Wang, Bahati Adnan Hamad Construction and building materials, Vol. 323, March 14, 2022, 125879 https://doi.org/10.1016/j.conbuildmat.2021.125879
Cheng X.W. Study of interface structure during unidirectional corrosion of oil well cement in H2S based on computed tomography technology XiaoWei Cheng, KaiYuan Mei, ZaoYuan Li, Xingguo Zhang, XiaoYang Guo Research in Industrial and Engineering Chemistry, Vol. 55/Issue 41, https://pubs.acs.org/doi/10.1021/acs.iecr.6b02162
DSTU B V. 2.6-145:2010 Konstruktsiyi budynkiv i sporud. Zakhyst betonnykh i zalizobetonnykh konstruktsiy vid koroziyi. Zahalni tekhnichni vymohy (HOST 31384-2008, (NEQ).
Pshinko O.M., Runova R.F. Runova R.F., Rudenko Y. Y., Troyan V.V. Rol dobavok v umenshenyy klynkernoy sostavlyayushchey pry proyzvodstve tovarnykh betonnykh smesey// Mat. 10-y Mezhd. nauchno-prakt. konf. «Dny sovremennoho betona». – Zaporozhe: «Planeta», 2008. – s. 45–59.
Runova R.F., Rudenko Y.Y., Troyan V.V. Analyz faktorov, opredelyayushchykh svoystva tovarnykh betonnykh smesey// Materyaly 1-y Mezhdunarodnoy nauchno-praktycheskoy konferentsyy «TOVARNY BETON — NOVYE VOZMOZhNOSTY V STROYTELNYKh TEKhNOLOHYYAKh».- Kharkov 2008. – S. 16–43.
Sheynich L.O. Suchasni uyavlennya pro koroziyu tsementnoho kamenyu v betoni pid diyeyu vody Sheynich L.O. Yu Kolesnyk, KK Pushkarova, LO Sheynych. Budivelni materialy, vyroby ta sanitarna tekhnika. 2011. – No. 42. – pp. 61–67.
Pluhin A. A. Rukhovenko O. V. & Pluhin O. A. Tekhnolohiya betonu, zalizobetonu ta zalizobetonnykh vyrobiv. Kharkiv: KhNUMH, 2012. 159 p.
Runova R.F., Rudenko I.I. Shchodo pryroshchennya mishnosti betonu pry nahrivanni. Budivelni konstruktsiyi. 2013. No. 78. S. 300–303.
Kovalchuk V. V. Ukrayinskiy beton: Suchasnyy stan. Suchasni budivelni materialy i tekhnolohiyi. 2018. No. 5. S. 12–18.
DSTU ISO 3696:2003 Voda dlya analitychnoyi laboratoriyi. Tekhnichni vymohy ta metody vyprobuvannya (ISO 3696:1987, IDT).
DSTU B EN 12620:2013 Zapovnyuvachi dlya betonu.
DSTU B V.2.7-32-95 Shchebin i hraviy iz shchebenu ta hraviyu shchilnykh hirskykh porid i vidkhodiv promyslovosti dlya budivelnykh robit. Tekhnichni umovy.
DSTU B V.2.7-46:2010 Tsementy zahalnobudivelni. Tekhnichni umovy.
DSTU B V.2.7-71-98 Shchebin i hraviy iz shchebenu ta hraviyu hirskykh porid dlya budivelnykh robit. Metody vyznachennya vmitstu shlamovykh i pylozernystykh chastok.
DSTU B V.2.7-75-98 Shchebin i hraviy iz hirskykh porid i vidkhodiv promyslovosti dlya budivelnykh robit. Metody vyznachennya morozostiykosti.
DSTU B V.2.7-210:2010 Rozchyny budivelni. Metody vyprobuvan.
DSTU B EN 197-1:2015 Tsement. Chastyna 1. Sklad, tekhnichni vymohy ta kryteriyi vidpovidnosti dlya zahalnykh tsementiv.
DSTU 9183:2022 Systema zabezpechennya yakosti budivelnytstva. Budivelni materialy. Terminolohiya.
DSTU EN 197-2:2023 Tsement. Chastyna 2. Otsinyuvannya vidpovidnosti.
DSTU 8858:2019 Betony. Vymohy do skladu, vlastyvostey, vyrobnytstva ta vidpovidnosti.
DSTU B V.2.7-119:2011 Dobavky dlya betoniv i budivelnykh rozchyniv. Zahalni tekhnichni umovy.
DSTU B V.2.7-114:2012 Sumishi betonni. Tekhnichni umovy.
DSTU B V.2.7-160:2008 Betony. Metody vyznachennya marnosti.
DSTU B V.2.7-170:2008 Betony. Metody vyznachennya vodonepronyknosti.
DSTU B V.2.7-176:2008 Betony ta betonni sumishi. Zahalni tekhnichni umovy.
DSTU B V.2.7-214:2009 Betony. Metody vyznachennya mitsnosti za kontrolnymy zrazkamy.
DSTU B V.2.7-224:2009 Betony. Pravyla kontrolyu mitsnosti.
DSTU-N B A.1.1-83:2008 Systema standartyzatsiyi ta normuvannya u budivnytstvi. Nastanova. Kerivnyy dokument v shchodo vyznachennya kontrolyu vyrobnytstva na pidpryyemstvi v tekhnichnykh umovakh na budivelni vyroby.
DSTU-N B V.2.7-175:2008 Nastanova shchodo zastosuvannya khimichnykh dobavok u betonakh i budivelnykh rozchynakh. Pshinko O.M., Runova R.F., Rudenko I.I., Troyan V.V. The role of additives in reducing the clinker component in the production of ready-mix concrete mixes// Proc. of the 10th Int. scientific-practical. conf. "Days of modern concrete". – Zaporozhye: "Planeta", 2008. – pp. 45–59.