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，都暴露在严酷的**环境条件下，如冰磨损和冰冲击载荷。当漂浮的冰盖以高摩擦力滑动到建筑物表面时，就会发生冰磨损。另一方面，漂浮的冰盖或冰山会对近海结构物产生相当大的动态冲击载荷。这些冲击载荷在强电流的作用下会造成更大的破坏。连续冰磨损和/或冰冲击荷载被认为是混凝土结构最危险的劣化之一。不幸的是，与混凝土结构的设计和材料选择有关的一些未知因素仍然存在**冰磨损**。此外，有关冰冲击荷载对混凝土结构影响的信息在文献中也是有限的。该项目的主要目标是研究北极条件下**混凝土的冰磨和抗冲击性能。该项目特别旨在研究北极实际环境条件对混凝土的影响，以开发出一些具有高抗冰磨损和抗冰冲击荷载的新型混凝土混合料。混合料组成、混合料比例、辅助胶凝材料以及橡胶/纤维碎屑对冰磨损和冲击载荷的影响将**清楚地展示出来，以帮助设计者/工程师在北极**条件下设计和优化混凝土混合料。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，也将是该项目的一部分。该项目的成果将具有创造新技术和后续机会的**巨大潜力，为北极条件下一代混凝土**设计指南。

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.