Urška Dolinar (Avtor), Tomaž Hozjan (Avtor), Gregor Trtnik (Avtor)

Povzetek

In this paper the possibility of using different regression models to predict the mechanical properties of limestone concrete after exposure to high temperatures, based on the results of non-destructive techniques, that could be easily used in-situ, is discussed. Extensive experimental work was carried out on limestone concrete mixtures, that differed in the water to cement (w/c) ratio, the type of cement and the quantity of superplasticizer added. After standard curing, the specimens were exposed to various high temperature levels, i.e., 200%, 400%, 600% or 800%. Before heating, the reference mechanical properties of the concrete were determined at ambient temperature. After the heating process, the specimens were cooled naturally to ambient temperature and tested using non-destructive techniques. Among the mechanical properties of the specimens after heating, known also as the residual mechanical properties, the residual modulus of elasticity, compressive and flexural strengths were determined. The results show that residual modulus of elasticity, compressive and flexural strengths can be reliably predicted using an artificial neural network approach based on ultrasonic pulse velocity, residual surface strength, some mixture parameters and maximal temperature reached in concrete during heating

Ključne besede

gradbeništvo;mehanske lastnosti;tlačna trdnost;umetne nevronske mreže;beton;požarno obnašanje;residual mechanical properties;compressive strength;artificial neural network;non-destructive testing techniques;fire behavior;concrete;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FGG - Fakulteta za gradbeništvo in geodezijo
UDK: 624
COBISS: 29330179 Povezava se bo odprla v novem oknu
ISSN: 2287-531X
Št. ogledov: 429
Št. prenosov: 54
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: gradbeništvo;mehanske lastnosti;tlačna trdnost;umetne nevronske mreže;beton;požarno obnašanje;
Vrsta dela (COBISS): Znanstveno delo
Konec prepovedi (OpenAIRE): 0000-00-00
Strani: str. 247-256
Letnik: ǂLetn. ǂ10
Zvezek: ǂšt. ǂ3
Čas izdaje: 2020
DOI: 10.12989/acc.2020.10.3.247
ID: 12048584