- Tytuł:
- Performance of self-compacting concrete cast in hot weather conditions
- Autorzy:
-
Khalil, Hossam S.
Abd Elhameid, Mohamed W.
Badawy, Amal A. - Powiązania:
- https://bibliotekanauki.pl/articles/36065966.pdf
- Data publikacji:
- 2023
- Wydawca:
- Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
- Tematy:
-
self-compacting concrete
rheological properties
compressive strength
splitting tension
silica fume
fly ash
hot weather
casting
retarder - Opis:
- This work focused on how self-compacting concrete (SCC) performs in situ in hot weather conditions at an ambient temperature of about 35°C. Tests for the rheological properties and compressive and splitting tensile strength aspects were carried out. The results of SCC mix ingredients on the rheological and hardened features of SCC mix were studied. Variations in the amount of portland cement content (CC), water to cement ratio (w/c), coarse to fine aggregate ratio (C : F), chemical admixture ratio, and pozzolanic admixture ratio were considered. Optimum values were obtained for these ingredients, which satisfied the SCC rheological characteristics and gave a 28-day compressive strength of 42 MPa, and 52 MPa after 28 days and 56 days, respectively. These optimum constituent values were 450 kg·m–3 of cement, 0.45 water cementitious ratio, and a coarse to fine material ratio of 1 : 0.8, a high range superplasticizer of 2%, and a mineral admixture of either 5% silica fume or 25% fly ash as a substitute for a similar amount cement.
- Źródło:
-
Scientific Review Engineering and Environmental Sciences; 2023, 32, 3; 284-302
1732-9353 - Pojawia się w:
- Scientific Review Engineering and Environmental Sciences
- Dostawca treści:
- Biblioteka Nauki
Artykuł