nr 11/2020 r.

DROGOWNICTWO 11/2020

 

CONTENTS

Andrzej Jarominiak: Problems of Repair and Strengthening of Reinforced Concrete Bridge Substructures ......      299

Mariusz Radulski: Investment process in Warsaw on the example of selected road projects .......................      313

Andrzej Stańczyk: Bridges at the confluence of Vistula and Narew rivers .........................................      319

obituary: Józef Władysław Sulima MSc – remembering (by Jacek Ziemian) ......................................      325

FROM GDDKIA SERVIS: Intensive works on national roads (selected by: TS)............................................      327

 

ABSTRACTS

 

Andrzej Jarominiak: Problems of Repair and Strengthening of Reinforced Concrete Bridge Substructures. “Drogownictwo”, vol. LXXV, No. 11, 2020, pp. 299–312

The article informs about the results of the survey conducted in the US on the problems of maintenance of bridge substructures. It lists the damages and informs about some methods of repairing reinforced concrete of these structures, including Ultra-High Performance Fibre Reinforced Concrete. It also discusses the reasons for the low durability of repairs and methods of increasing it: chloride extraction, impressed current cathodic and galvanic anodes systems protection.

Keywords: damage of reinforced concrete bridge substructures, increasing the durability of reinforced concrete repairs, chloride extraction from concrete, cathodic protection of reinforced concrete, galvanic anodes protection of reinforced concrete, Ultra-High Performance Fibre Reinforced Concrete.

 

Mariusz Radulski: Investment process in Warsaw on the example of selected road projects. “Drogownictwo”, vol. LXXV, No. 11, 2020, pp. 313–318

Investment process carried out by the Municipal Road Investments Management Board in Warsaw has been presented on the example of two road projects in Warsaw: the reconstruction of Głębocka Street and Wybrzeże Helskie Street. All administrative decisions obtained by the investor during the whole investment process are listed. On the example of Głębocka Street, the problems encountered by the investor during the construction process with the implementation of the provisions of administrative decisions obtained during the investment preparation phase were described.

Keywords: Warsaw, road investments, legal regulations, administrative decisions.

 

Andrzej Stańczyk: Bridges at the confluence of Vistula and Narew rivers. “Drogownictwo”, vol. LXXV, No. 11, 2020, pp. 319–324

In the era of a pandemic, the author presents several reminiscences, from a canoeing trip along the middle section of the Vistula River, concerning the existing bridges at the confluence of the Vistula and Narew. In a nutshell, the author recalled the structural layout and historical fate of these bridges, namely: bridge over the Vistula River named after Józef Piłsudski, bridge over the Narew River named after Feliks Pancer, a new railway bridge over the Narew River, bridge over the Vistula River named after the Defenders of Modlin 1939 and a new bridge over the Vistula River in Wyszogród. An additional aesthetic value of the discussed bridge objects is their location in the Nature 2000 area.

Keywords: Bridges of central Vistula, history, structures.