Abstract
In the current study, retarding type and standard type admixture design of concrete have been proposed to control the generation of hydrationheat for foundation members that use high strengths concrete. Finite element analysis also has been conducted to understand the rational placing heightsof concrete. In addition, real-size structures have experimented and their results were compared to the analytical results to evaluate the reducing effectof thermal stress . For a large 6.5 m×6.5 m×3.5 m member with retarding and standard type horizontal partition placement of concrete showed themanageable possibility of temperature difference within 25-degree Celcius between the middle and surface portion while the maximum temperaturewas 77-degree Celcius. Also, temperature cracking index from the finite element analysis appeared to be 1.49 that predicts no formation of crackingdue to the effects of temperature. Finally, it appeared that horizontal partition placement of retarding and standard type concrete has the significanteffect of reducing the thermal stress that generated by the hydration heat in the high strengths mass concrete.
| Translated title of the contribution | Applicability of High-strength Mass Concrete through Setting Time and Horizontally-divided Placement |
|---|---|
| Original language | Korean |
| Pages (from-to) | 103-113 |
| Number of pages | 11 |
| Journal | 한국구조물진단유지관리공학회 논문집 |
| Volume | 21 |
| Issue number | 2 |
| DOIs | |
| State | Published - Mar 2017 |