Naslov
Effect of elevated temperatures on concrete made with ash from wood biomass and recycled poly-mer fibers from waste rubber

Autori
Jelčić Rukavina, M. ; Gabrijel, I. ; Kozlik, M. ; Žvorc, V. ; Štirmer, N.

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

Izvornik
International RILEM Conference on Synergising Expertise towards Sustainability and Robustness of Cement-based Materials and Concrete Structures (SynerCrete’23 - Volume 1) / Jędrzejewska, A. ; Kanavaris, F. ; Azenha, M. ; Benboudjema, F. ; Schlicke, D. - Cham, Switzerland : Springer, 2023, 604-612

ISBN
978-3-031-33210-4

Skup
SynerCrete’23 The International RILEM Conference on Synergising expertise towards sustainability and robustness of cement-based materials and concrete structures

Mjesto i datum
Milos, Grčka, 14.06.2023. - 16.06.2023

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
wood biomass ash, recycled polymer tyre fibers, elevated temperatures, me-chanical, durability properties.

Sažetak
With the increasing awareness of global warming, largely due to the emission of large amounts of CO2, some attempts have been made to develop strate-gies to help combat the growing trend of global warming. To reduce the harmful effects of concrete production, efforts are being made to reduce the amount of cement used by replacing the cement with mineral additives to maintain or improve the properties of the concrete. In addition, the use of waste materials as substitutes for cement and other concrete constituents is being promoted and investigated. This paper presents an experimental study on the influence of ash from wood biomass (used as a cement substitute up to 30%) and the addition of recycled polymer fibers from waste rubber in an amount of 2 kg/m2 (used as a substitute for industrial polypropylene fibers) on the residual mechanical and durability properties of concrete exposed to high temperatures up to 600°C. In addition, reference concretes were prepared using only cement and industrial polypropylene fibers for the comparison purposes. A total of 5 different mixes were tested. The following tests were performed on the con-crete specimens before and after thermal treatment: compressive strength, static modulus of elasticity, ultrasonic pulse velocity and gas permeability. These properties represent the input parameters for the evaluation of the condition of reinforced concrete elements after exposure to fire. The ob-tained results show that the use of the investigated waste materials in con-crete leads to comparable or slightly better properties after fire exposure compared to the reference concrete.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Temeljne tehničke znanosti

POVEZANOST RADA