Evaluation of Wedge Splitting Fracture Tests using the Double-K Model: Analysis of the Effect of Hemp Fibre Dosage and Length in Concrete Specimens.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F16%3APU118916" target="_blank" >RIV/00216305:26110/16:PU118916 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Evaluation of Wedge Splitting Fracture Tests using the Double-K Model: Analysis of the Effect of Hemp Fibre Dosage and Length in Concrete Specimens.

Original language description

This paper presents the results obtained from the employment of a selected fracture model to evaluate wedge splitting fracture tests carried out on hemp fibre concrete specimens. The research was mainly focused on the effect of the dosage and length of hemp fibres on the initiation part of crack propagation in concrete specimens, and on critical crack opening displacement. Concrete mixtures with different volumetric dosages (0.5, 1.0 and 2.0 %) and fibre lengths (10, 20 and 40 mm) were prepared, and six identical specimens were cast from each mixture. Specimens were also cast from a reference mixture, which was without fibres. The specimens were provided with an initial notch and tested using the wedge splitting test method. Load versus crack mouth opening displacement diagrams were recorded and (after data filtering and appropriate modifications) subsequently evaluated using the Double-K fracture model. This model allows the evaluation of two material parameters – the initiation fracture toughness, which defines the onset of stable crack propagation, and the unstable fracture toughness, which defines the onset of unstable cracking or failure. Finally, the critical crack opening displacement was determined with the assumption of the bilinear function of softening in tension.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/LO1408" target="_blank" >LO1408: AdMaS UP – Advanced Building Materials, Structures and Technologies</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceeding from 22nd Czech Concrete Day 2015

ISBN

978-3-03835-675-2

ISSN

1012-0394

e-ISSN

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Number of pages

5

Pages from-to

142-146

Publisher name

Neuveden

Place of publication

Switzerland

Event location

Litomyšl

Event date

Nov 25, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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