Durability of Lightweight Concrete Containing Stalite Aggregate

Stantec试图开发一些适用于寒冷地区的高性能轻质混凝土混合物，以便为客户提供耐用的轻质混凝土解决方案，用于海上结构的潜在应用。然而，尽管该公司在优化不同的轻质混合物方面进行了试验，但关于轻质混凝土的耐久性，特别是在使用除冰盐进行冻融循环后，仍然存在未解之谜。该项目的主要目标是开发一些含有石笋骨料的轻质混合物，具有优化的强度和耐久性。该项目特别侧重于开发的混合物在抗冻融盐方面的耐久性。这些混合物将使用不同的粘结剂含量、不同百分比的轻质石笋骨料和不同的补充胶凝材料来设计。测试程序将包括评估新鲜性能，机械性能（压缩，拉伸和弯曲强度），以及在除冰盐存在下的抗冻性和解冻性。该项目的成果将提高Stantec研发团队的知识和专业知识，特别是在轻质混凝土技术方面。此外，此次合作将导致公司在其他项目和业务扩展方面的潜在增长，从而使加拿大经济受益。

Stantec has attempted to develop some high performance lightweight concrete mixtures, suitable for cold regions, in order to provide their customers with durable lightweight concrete solutions for potential applications in offshore structures. However, despite the company's trials in optimizing different lightweight mixtures, there are still unanswered questions regarding the durability of lightweight concrete, especially after exposure to freezing and thawing cycles with de-icing salts. The main objective of this project is to develop some lightweight mixtures containing Stalite aggregate with optimized strength and durability. The project particularly focuses on the durability of the developed mixtures in term of resistance to freezing and thawing with de-icing salts. These mixtures will be designed using different binder contents, different percentages of lightweight Stalite aggregate, and different supplementary cementing materials. The test program will include the evaluation of fresh properties, mechanical properties (compressive, tensile, and flexural strengths), and freezing and thawing resistance in the presence of de-icing salts. The results of this project will lead to enhance the knowledge and expertise of the Stantec's R&D team, especially in lightweight concrete technology. In addition, this collaboration will result in a potential growth in the company in terms of additional projects and expansion of their business, thereby benefiting the Canadian economy.