Experimental investigation of mechanical behavior and load-bearing capacity of fiberglass and metal reinforced polypropylene sanitary manhole covers

• Autorzy: Al-Sabur Raheem , Khalaf Hassanein I. , Kubit Andrzej , Perłowski Ryszard , Jurczak Wojciech

Identyfikatory

DOI

10.12913/22998624/199592

• Języki publikacji: EN

Abstrakty

EN

Sanitary manhole covers, such as infrastructure lines, drainage, and stormwater, are important in drainage systems. In recent years, there have been intensive attempts to improve the performance of these covers and reduce their costs. This study investigates the mechanical behaviour and load-bearing capacity of polypropylene manhole covers modified by two methods. In the first modification, covers were strengthened by injecting ribs composed of 15 wt.% and 30 wt.% glass fibres. In the second modification, a steel spiral rod was installed along the circumference of the cover. Compression tests were conducted using a universal testing machine equipped with ZwickRoell Xforce load cells to evaluate the effectiveness of these modifications. Contrary to expectations, the results showed a 12.36 kN average decrease in the cover load capacity when there was a 15 wt.% content of glass fibers, indicating a 13.46% weakening compared to the traditional version of pure polypropylene. In contrast, the variant with a 30 wt.% filler content exhibits a 19.31 kN decrease in load-bearing capacity, resulting in a 21.03% weakening compared to the pure polypropylene cover. When the spiral steel rod was added, the result was a significant reduction in the circumferential rib's cross-sectional area, leading to cracking with an average force value of 86.21 kN. This was lower than the load capacity of the variant without a bar, which was 91.82 kN.

Słowa kluczowe

EN

mechanical behaviour; load-bearing capacity; manhole covers; strengthening rib; polypropylene; glass fibre; cracks

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2025
• Tom: Vol. 19, no. 4
• Strony: 20--31
• Opis fizyczny: Bibliogr. 29 poz., fig.

Twórcy

autor

Al-Sabur Raheem

• Mechanical Department, Engineering College, University of Basrah, Basrah 61004, Iraq

• https://orcid.org/0000-0003-1012-7681

autor

Khalaf Hassanein I.

• Mechanical Department, Engineering College, University of Basrah, Basrah 61004, Iraq

• https://orcid.org/0000-0002-1058-8798

autor

Kubit Andrzej

• Department of Manufacturing and Production Engineering, Rzeszow University of Technology, al. Powst. Warszawy 8, 35-959 Rzeszów, Poland

• https://orcid.org/0000-0002-6179-5359

autor

Perłowski Ryszard

• Department of Manufacturing and Production Engineering, Rzeszow University of Technology, al. Powst. Warszawy 8, 35-959 Rzeszów, Poland

• https://orcid.org/0000-0002-6633-6215

autor

Jurczak Wojciech

• Mechanical and Electrical Engineering Department, Polish Naval Academy, 81-103 Gdynia, Poland

• https://orcid.org/0000-0002-1608-7249

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).