Defects occurred during the application of bridge deck waterproofing in Kosovo motorway bridges and their prevention
Session
Civil Engineering, Infrastructure and Environment
Description
The waterproofing system of the bridge deck generally consist of a waterproofing layer plus a protective layer. The durability of bridges depends on the effectiveness of the bridge deck waterproofing system. Reinforced concrete is extremely durable structure material if properly constructed, however porosity will always occur and on the wear surface hairline cracking occurs, which allow water and corrosive materials to penetrate the concrete and attack steel reinforcement bar. The bridge deck waterproofing product can be divided into three main categories: sheets systems, liquid systems add mastic layer. In most cases the protective layer is asphalt layer. In Kosovo motorways was used sheets system. During the installation of the waterproofing system some defects were encountered such as: concrete surface irregularities and cracks, excessive quartz sand not removed, non-uniformly heated waterproofing membrane strips, etc. These defects have affected the adhesion between sheets and foundation layer. Prevention steps are: experienced workmanship, good supervision, and full compliance with the applicable standard during installation.
Keywords:
Waterproofing, Bridge, Cracks, Reinforcement, Supervision
Session Chair
Muhamet Ahmeti
Session Co-Chair
Bruno Dal Lago
Proceedings Editor
Edmond Hajrizi
ISBN
978-9951-550-19-2
Location
Pristina, Kosovo
Start Date
26-10-2019 11:00 AM
End Date
26-10-2019 12:30 PM
DOI
10.33107/ubt-ic.2019.186
Recommended Citation
Rapuca, Asrim; Pllana, Nebi; and Buzhala, Mustafë, "Defects occurred during the application of bridge deck waterproofing in Kosovo motorway bridges and their prevention" (2019). UBT International Conference. 186.
https://knowledgecenter.ubt-uni.net/conference/2019/events/186
Defects occurred during the application of bridge deck waterproofing in Kosovo motorway bridges and their prevention
Pristina, Kosovo
The waterproofing system of the bridge deck generally consist of a waterproofing layer plus a protective layer. The durability of bridges depends on the effectiveness of the bridge deck waterproofing system. Reinforced concrete is extremely durable structure material if properly constructed, however porosity will always occur and on the wear surface hairline cracking occurs, which allow water and corrosive materials to penetrate the concrete and attack steel reinforcement bar. The bridge deck waterproofing product can be divided into three main categories: sheets systems, liquid systems add mastic layer. In most cases the protective layer is asphalt layer. In Kosovo motorways was used sheets system. During the installation of the waterproofing system some defects were encountered such as: concrete surface irregularities and cracks, excessive quartz sand not removed, non-uniformly heated waterproofing membrane strips, etc. These defects have affected the adhesion between sheets and foundation layer. Prevention steps are: experienced workmanship, good supervision, and full compliance with the applicable standard during installation.