Ice abrasion and impact resistance of concrete under arctic conditions

桥墩、灯塔和石油平台，特别是北极和亚北极地区的桥墩、灯塔和石油平台，暴露在恶劣的环境条件下，如冰磨损和冰冲击载荷。冰磨损发生在漂移的冰盖以高摩擦力与结构表面滑动时。另一方面，漂流的冰盖或冰山会对海上结构物产生相当大的动态冲击载荷。当这些冲击负荷被强电流承受时，其破坏性甚至更大。连续的冰磨损和/或冰冲击荷载被认为是混凝土结构最危险的退化之一。不幸的是，仍然有许多未知因素与混凝土结构的设计和材料选择暴露于冰 ** 磨损。此外，有关冰冲击荷载对混凝土结构的影响的信息在文献中是有限的。本项目的主要目的是研究北极条件下混凝土的抗冰磨损和抗冲击性能。该项目特别旨在研究实际北极环境条件对混凝土的影响，以开发一些具有高抗冰磨损和冰冲击载荷的新型混凝土混合物。混合物成分、混合物比例、辅助胶凝材料以及橡胶屑/纤维对冰磨损和冲击载荷的影响将 ** 清楚地呈现，以帮助设计师/工程师在北极条件下设计和优化混凝土混合物。其他考虑因素，如混凝土养护和表面处理技术对 ** 耐磨性和抗冲击性的影响，也将是本项目的一部分。该项目的成果将具有创造新技术的巨大潜力，并为北极条件下的下一代混凝土设计准则创造后续机会。

Bridge piers, lighthouses, and oil platforms, especially those in Arctic and subarctic areas, are exposed to harsh**environmental conditions such as ice abrasion and ice impact loading. Ice abrasion occurs when a drifting ice**sheet slides against the surface of the structure with high friction. On the other hand, drifting ice sheets or**icebergs can create considerable dynamic impact loads on offshore structures. These impact loads can be even**more damaging when borne by strong currents. Continuous ice abrasion and/or ice impact loading are**considered one of the most dangerous deterioration of concrete structures. Unfortunately, there are still a**number of unknown factors related to design and material selection of concrete structures exposed to ice**abrasion. Moreover, the information regarding the effect of ice impact loading on concrete structures is limited**in the literature. The main objective of this project is to investigate ice abrasion and impact resistance of**concrete under arctic conditions. The project particularly aims to study the effects of actual Arctic**environmental conditions on concrete in order to develop some novel concrete mixtures with high resistance to**ice abrasion and ice impact loading. The effects of mixture composition, mixture proportions, supplementary**cementing materials, and the inclusion of crumb rubber/fibres on ice abrasion and impact loading will be**clearly presented to help designers/engineers in designing and optimizing concrete mixtures in arctic**conditions. Other considerations such as effects concrete curing and surface finishing techniques on the**abrasion and impact resistance will also be part of this project. The outcome of this project will have a**significant potential to create new technology and subsequent opportunities for next generation of concrete**design guidelines for arctic conditions.