Naslov
Properties of Spanish Broom Fiber Reinforced Concrete

Autori
Juradin, Sandra ; Boko, Ivica ; Netinger Grubeša, Ivanka ; Jozić, Dražan ; Mrakovčić, Silvija ; Vukojević, Iva

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Solid State Phenomena, Vol. 322 SSP / Nenadálová, S. ; Johová, P. - : Trans Tech Publications, 2021, 72-77

ISBN
978-303571821-8

Skup
27th International Conference on Concrete Days

Mjesto i datum
Prag, Češka Republika, 02.12.2020

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
spanish broom ; fiber treatment ; workability ; mechanical properties of concrete
(Spanish broom ; fiber treatment ; workability ; mechanical properties of concrete)

Sažetak
Building materials based on renewable resources such as plant fibers are increasingly needed, especially if the plant is local and easily accessible. One such plant is the Spanish broom, a typical shrub of the Mediterranean region. In this work, Spanish broom fibers were used for the first time to reinforce concrete. Four mixtures were made: a reference mixture and three mixtures reinforced with 3 cm long fibers, in the amount of 0.5% of the total volume. Cement CEM I 42.5R, crushed limestone aggregate (D = 16 mm), and tap water were used for all the mixtures and in equal quantities. Four mortar mixtures were also made: standard mortar and 3 fiber-reinforced mortars. The mortar is reinforced with fibers of the same length and quantity as the concrete. The fibers were obtained by maceration of Spanish broom in solutions of 8%, 10%, and 15% NaOH. The quality and mechanical properties of the cellulose fibers depend on the geographical and climatic conditions and the fiber extraction procedures so the aim of this study was to evaluate the influence of different chemical pre-treatments of the fibers on the mechanical properties of the concrete. The properties of the fresh mix were determined using the flow method. Hardened concrete was tested for compressive and flexural strength and dynamic modulus of elasticity. Compressive and flexural strengths were determined on cement mortars. The results obtained on concrete were compared with those obtained on the mortar. It was concluded that the quality of composite materials is more influenced by the quality of the placement than by fiber treatment.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Građevinarstvo, Temeljne tehničke znanosti

POVEZANOST RADA