Summary
Detail
Structure
Construction
MaterialsMaterials
Preventing concrete spalling in Super Tall Buildings and improving fire-resistance technology
High-strength concrete with more than 500 Megapascals may exhibit spalling or significant loss of load-bearing strength when exposed to extreme high temperature due to fire. To avoid this, we used high-performance concrete that was reinforced with fire-resistant materials in building Lotte World II Jamsil and Busan Lotte World.
A polymer powder was mixed with the fiber material to prevent spalling and to reduce fiber entanglement, which also enabled pumps to lift the concrete up to 500 meters.
Time-dependent special analysis 토토 사이트 추천
Heat transmission/thermal stress analysis 토토 사이트 추천 when high-strength concrete is exposed to a fire. We developed a program to analyze high-strength concrete’s fire-resistance performance to determine precisely the degree of fire resistance gained from adding the polymix fiber.
High-performance, high-strength concrete pumpability test 토토 사이트 추천
We succeeded in shooting viscous 600- and 800-Megapascal high-strength concrete mixed with polymix fiber up to 600 meters in the Busan construction site in 2009. This 토토 사이트 추천 was then applied to both projects in Seoul and Busan.
토토 사이트 추천 to improve spalling prevention properties of high-rise concrete structures
Recently, many natural and man-made disasters have led to building explosions.
Lotte E&C is working to discover ways to absorb explosion energy by mixing concrete with other materials and using different manufacturing and construction technologies.
Concrete structure’s numerical analysis modeling
토토 사이트 추천 to analyze explosion-prevention concrete when it is exposed to explosion-triggering load. By using a program to analyze the likelihood of explosion, we are able to forecast the performance of fiber-mixed high-strength concrete. Based on the analysis results, explosions can be avoided by improving the properties of the concrete.
