Određivanje obodne krutosti PP i GRP cijevi

master's thesis

• Title (english): Determination of ring stiffness of PP and GRP pipes
• Author: Matej Blažević
• Mentor: Ana Skender (mentor)
• Committee member: Domagoj Damjanović (predsjednik povjerenstva)
• Committee member: Ivan Duvnjak (član povjerenstva)
• Committee member: Ana Skender (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Engineering Mechanics); Zagreb
• Defense date and country: 2020-09-24, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract

Polipropilen (PP) je plastomer koji pripada skupini poliolefina, odnosno vrsti plastomera koji imaju specifična svojstva i za razliku od drugih plastomera imaju izraženu granicu popuštanja materijala. Neka od najznačajnijih svojstava polipropilena su kemijska otpornost, elastičnost, žilavost i otpornost na umor. Polimer ojačan staklenim vlaknima (GRP) je snažan i vrlo svestran materijal koji se ponaša drukčije od plastomera koji se obično koriste u svakodnevnim predmetima. To je kompozitni materijal izrađen od staklenih vlakana koja se međusobno tkaju kako bi se stvorila fleksibilna tkanina, a kao matrica koristi se nezasićeni poliester, vinilester ili epoksidna smola. Cijevi na kojima je stavljen naglasak u ovom radu su kanalizacijske cijevi različitih nominalnih promjera oznake PP 315, PP 400 i GRP 500 sa različitim vrijednostima obodne krutosti. U ovom radu istražena su općenito svojstva pojedinih materijala te njihova primjena, posebice u građevinarstvu. Također je provedeno eksperimentalno istraživanje obodne krutosti na serijama uzoraka cijevi PP 315 i PP 400 prema normi HRN EN ISO 9969:2016 te na uzorku cijevi GRP 500 prema normi HRN EN 1228:2003.

Abstract (english)

Polypropylene (PP) is a thermoplastic that belongs to the group of polyolefins, a group of thermoplastics that have specific properties and, unlike other thermoplastics, have a developed yield strength of the material. Some of the most important properties of polypropylene are chemical resistance, elasticity, toughness and fatigue resistance. Glass-reinforced polymer (GRP) is a strong and very versatile material that behaves differently than thermoplastic materials that are commonly used in everyday objects. It is a composite material made of glass fibres that are woven together to create a flexible fabric and the matrix can be made of unsaturated polyester, vinyl ester or epoxy resin. The pipes highlighted in this paper are sewer pipes with different nominal diameters labelled as PP 315, PP 400 and GRP 500 with different values of ring stiffness. In this paper, the properties of individual materials and their application, especially in construction, are investigated in general. Experimental research of the ring stiffness is conducted on pipe samples PP 315 and PP 400 according to the standard HRN EN ISO 9969: 2016 and on a pipe sample GRP 500 according to the standard HRN EN 1228: 2003.

• Keywords: polipropilen; polimer ojačan staklenim vlaknima; cijevi; obodna krutost; numerički model
• Keywords (english): polypropylene; glass reinforced polymer; pipes; ring stiffness; finite element model
• Language: croatian
• URN:NBN: urn:nbn:hr:237:682402
• Study programme: Title: Civil Engineering; specializations in: Construction Management, Transportation Engineering, Geotechnical Engineering, Hydraulic Engineering, Structural Engineering, Construction Materials, Theory and Modeling of Structures; Course: Construction Management; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka građevinarstva (magistar/magistra inženjer/inženjerka građevinarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-06-05 08:18:06