Ultrasonic Monitoring On Glass Fiber Reinforced Cement (GRC) Bending Test

Glass fiber reinforced cement (GRC) is a composite material based on Portland cement and alkali resistant glass fibers. This composite has good mechanical properties including toughness and flexural strength. The characterization of this material is carried out by four points bending test. During th...

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Bibliographic Details
Published in:WIT Transactions on Engineering Sciences 2015-01, Vol.90, p.149
Main Authors: Genovés, V, Gosálbez, J, Miralles, R, Soriano, L, Payá, J
Format: Article
Language:English
Subjects:
Bend tests
Cement
Cement reinforcements
Change detection
Composite materials
Fiber composites
Fiber reinforced cements
Glass fiber reinforced cements
Glass fibers
Mechanical properties
Modulus of rupture in bending
Portland cements
Ultrasonic attenuation
Ultrasonic testing
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Summary:Glass fiber reinforced cement (GRC) is a composite material based on Portland cement and alkali resistant glass fibers. This composite has good mechanical properties including toughness and flexural strength. The characterization of this material is carried out by four points bending test. During this test, elastic and plastic behaviour are identified from load vs. deflection curves. The scope of the research is to monitor this bending test by means on ultrasonic pulses in order to detect changes on the material and to correlate them with mechanical behaviour. In this sense, pulse velocity, energy, attenuation and non-linearities of the ultrasonic received signals have been analysed. First changes in energy, attenuation and nonlinearities were detected during the change from elastic to plastic step and the first pulse velocity change were observed during the plastic step.
ISSN:1746-4471
1743-3533
DOI:10.2495/MC150131