Naslov
Two Stage Methods of Concrete Strength in Structures

Autori
Mikulić, Dunja ; Ukrainczyk, Velimir ; Balabanić, Gojko

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

Izvornik
Proceedings of International conference Quality control in Building Trade / - Brno : Dum techniky CSVTS, 1983, 1-12

Skup
International conference Quality control in Building Trade

Mjesto i datum
Brno, Češka Republika, 1983

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
beton; cement; kvaliteta; kriterij
(concrete; concrete; quality; criteria)

Sažetak
When the compressive strength of a given concrete structure is not known or questionable, several test methods could be applied for subsequent tests. The questions arising during subsequent estimation of concrete strength have mostly been dealt with in reference literature (1, 5, 6). Subsequent concrete quality testing is done in the structure by determining compressive strength by destructive or by non-destructive methods. These methods are of different confidence, but also different costs. In this paper we deal with reliability of test methods, the number of test specimens or spots and criteria for compressive strength evaluation. Contractors and Purchasers risks are also taken into account. Non-destructive tests are not fully reliable and they are used always in combination with drilled cores. Efforts are made to decrease the number of cores to the reasonable amount. For economic reasons and simplicity of testing, two stage concrete quality control has been introduced by combination of destructive and non-destructive method. It is well known that the strength of concrete in a structure is approximately 15% lower than in specimens made of identical concrete. The criteria for evaluating concrete quality in a structure is the same as the criteria for evaluating concrete quality during control testing on cubes.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Temeljne tehničke znanosti

POVEZANOST RADA