Naslov
Influence of cement matrix composition on early age shrinkage properties

Autori
Didulica, Katarina ; Baričević, Ana

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

Izvornik
Concrete Solutions 2022 – 8th International Conference on Concrete Repair, Durability & Technology / Grantham, Michael ; Basheer, P.A.M. ; Mangabhai, Raman - Leeds : EDP Sciences, 2022

Skup
Concrete Solutions 2022 – 8th International Conference on Concrete Repair, Durability & Technology

Mjesto i datum
Leeds, Ujedinjeno Kraljevstvo, 11.07.2022. - 13.07.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
early age shrinkage properties

Sažetak
Early age shrinkage behaviour is an important factor in determining durability properties of cementitious composites. Shrinkage occurs in cement paste, but it can be tested in paste, mortar, and concrete. Differences in results obtained can be due to the mitigation influence of aggregates and other additions, like fibres. In order to better understand the early shrinkage properties on cementitious composites in use it is necessary to determine the influence of cement matrix composition. The use of mineral additives as a replacement for cement has been a practice for many years, which, in addition to improved mechanical properties of composites, also affects the reduction of waste and use of natural resources. Although similar to cement in composition, differences lead to variation in reactions during the hydration and thus to the shrinkage properties at early age. Delayed or accelerated reaction can be seen in temperature and humidity development and in values of shrinkage, autogenous as well as drying. Autogenous shrinkage was performed in accordance with modified HRN EN 12390-16 on prisms and ASTM C1698 on corrugated tube. Tests were performed on the cement paste of a reference mixture with w/b 0, 3 and mixtures with different amounts of mineral additive as a cement replacement.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

POVEZANOST RADA