Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Seul-Woo Choi"'
Publikováno v:
Construction and Building Materials. 192:50-57
Internal curing methods, which supply water inside concrete using highly absorbent materials, have been investigated to reduce early-age shrinkage in high strength concrete. This study investigates changes in the concrete pore structure caused by int
Publikováno v:
Journal of the Korea Concrete Institute. 29:267-273
Recently, the researches of self-healing concrete technology are being carried out actively due to the advent of importance for the maintenance of concrete structures. A water permeability test has been widely used for the evaluation of self-healing
Publikováno v:
Journal of the Korean Recycled Construction Resources Institute. 3:1-6
Recently, lots of researches on concrete with high volume mineral admixture such as ground granulated blast furnace slag (GGBFS) have been carried out to reduce CO2. It is known that the precast concrete has an advantage of high strength at early age
Publikováno v:
Construction and Building Materials. 58:77-84
There is a growing interest in the use of by-products in concrete for cost-reduction and performance enhancement. In China, lightly-burnt MgO (magnesium oxide), a by-product, has been used in dam concrete. Since lightly-burnt (850–1000 °C) MgO ten
Publikováno v:
Journal of The Korean Society of Civil Engineers. 33:909-916
Concrete containing lightly burnt MgO has long term expansibility. It also could compensate for the thermal shrinkage of mass concrete, because the hydration of MgO proceeds at a slow pace to long-term age. Thus, lightly burnt MgO has been applied to
Publikováno v:
Journal of The Korean Society of Civil Engineers. 33:475-481
Although the lightly burnt MgO at 850 ~ 1000℃ has expansibility, it does not lead to unsound concrete. The expansion of MgO could compensate for shrinkage of concrete for a long-term, because the hydration of MgO occurs at a slow pace. Recently, th
Publikováno v:
Journal of the Korea Concrete Institute. 23:609-615
MgO concrete containing lightly burnt MgO powder at may have a long-term expansibility characteristic. Such expansibility of MgO concrete can compensate the shrinkage at later ages since the hydration of the MgO is very slow. However, the addition of
Publikováno v:
Journal of the Korea Concrete Institute. 23:225-233
The volume change in concrete takes place with changes in temperature and water content immediately after concrete casting. In the early age stage, the thermal and drying shrinkages can cause cracks that are very crucial to the durability of concrete