Đăng nhập
 
Tìm kiếm nâng cao
 
Tên bài báo
Tác giả
Năm xuất bản
Tóm tắt
Lĩnh vực
Phân loại
Số tạp chí
 

Bản tin định kỳ
Báo cáo thường niên
Tạp chí khoa học ĐHCT
Tạp chí tiếng anh ĐHCT
Tạp chí trong nước
Tạp chí quốc tế
Kỷ yếu HN trong nước
Kỷ yếu HN quốc tế
Book chapter
Bài báo - Tạp chí
7 (2018) Trang: 1-6
Tạp chí: International Journal of Engineering Science and Innovative Technology (IJESIT)
Liên kết:

The aims of this study are to investigate the effects of four curing conditions on the engineering properties of hardened slag-based mortar which was produced by the mixture of ground granulated blast furnace slag, Type F fly ash, circulating fluidized bed combustion Fly ash, and river sand. Four curing conditions, including three different continuous initial curing periods of 3, 7 and 28 days in a chamber with the constant temperature of 30oC and constant humidity 65 % RH, respectively, then in the air until the testing at 28 days, and the fourth one being a continuous water curing of 30oC until the testing at 28 days, were studied. The results showed that, for the water-to-binder ratio of 0.35, the 28-day compressive strengths of hardened mortar of curing in 30˚C and 65 R.H condition were much higher than those of air curing after initial curing periods of 3 and 7 days and continuous water curing of 30˚C by 12.4%, 8.94% and 8.83%, respectively. It was also noticed that a slightly increase of compressive strength of hardened mortar by a narrow range from 0.34% to 2.3% with water-to-binder ratio of 0.5 being curing for 28 days in the chamber of constant 30˚C and 65 RH as compare with those of other types of curing conditions. The compressive strengths of hardened mortar with lower water-to-binder ratio obviously increase with longer initial curing period in the chamber. On the other hand, the water curing led to a lower compressive strength of hardened mortar probably due to the calcium hydroxides of hydration products being gradually dissolved in water.

 

CTUJoS indexed by Crossref

Vietnamese | English


BC thường niên 2019


Bản tin ĐHCT


TCKH tiếng Việt


TCKH tiếng Anh

 
 
Vui lòng chờ...