Utjecaj komponenti betona na rezultate nerazornih ispitivanja

master's thesis

• Title (english): Influence of concrete components on the results of non-destructive testing
• Author: Ana Marija Macan
• Mentor: Ivana Banjad Pečur (mentor)
• Committee member: Ivana Banjad Pečur (predsjednik povjerenstva)
• Committee member: Marijana Serdar (član povjerenstva)
• Committee member: Nina Štirmer (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; Zagreb
• Defense date and country: 2021-11-25, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract

Tlačna čvrstoća betona može se ispitivati razornim ili nerazornim metodama. Drobljenje uzoraka je uobičajeni razorni test za određivanje čvrstoće betona. Ispitivanje sklerometrom i ultrazvučnim uređajem koristi se u području ispitivanja bez razaranja za određivanje tlačne čvrstoće. U ovom radu korišteno je šest sastava betona za pripremu uzoraka (15 cm x 15 cm) mijenjanjem
vrste agregata i dodataka u mješavinama. Provedeno je eksperimentalno ispitivanje za određivanje tlačne čvrstoće betona razornim (tlačnim) i nerazornim (sklerometar i ultrazvuk) ispitivanjima u različitim starostima (1, 7 i 28 dana). Nadalje, uspostavljena je korelacija između tlačne čvrstoće određene razornom metodom i tlačne čvrstoće određene nerazornim metodama. Također, napravljena je usporedba između mješavina s drobljenim agreagatom u odnosu na mješavine s riječnim agregatom.

Abstract (english)

The compressive strength of concrete can be tested by destructive or non-destructive methods. The crushing of the samples is the usual destructive test to determine the concrete strength. The rebound hammer test and the ultrasonic device are used in the field of non-destructive tests to determine respectively the compression strength. In this work, six concrete compositions were used to prepare specimens (15 cm x 15 cm) by varying the type of aggregates and admixtures in mixtures. An experimental study was conducted to determine the compressive strength of concrete by destructive (compression) and non-destructive (rebound hammer and pulse velocity) tests at different ages (1, 7 and 28 days). After that, correlation between compressive strength determined by non-destructive method and by destructive method was established. Also, a comparison was made between mixtures with crushed aggregate compared to mixtures with river aggregate.

• Keywords: Tlačna čvrstoća; razorna ispitivanja; nerazorna ispitivanja; ispitivanje sklerometrom; ispitivanje ultrazvukom; drobljeni agregat; riječni agregat
• Keywords (english): Compressive strength; destructive methods; non-destructive methods; rebound hammer test; pulse velocity test; crushed aggregate; river aggregate
• Language: croatian
• URN:NBN: urn:nbn:hr:237:751459
• 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: 2022-04-11 07:58:40