Durability of Lightweight Concrete Containing Stalite Aggregate

石蜡骨料轻质混凝土的耐久性

基本信息

批准号：
542458-2019
负责人：
Hassan, Assem
金额：
$ 1.82万
依托单位：
Memorial University of Newfoundland
依托单位国家：
加拿大
项目类别：
Engage Grants Program
财政年份：
2019
资助国家：
加拿大
起止时间：
2019-01-01 至 2020-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=680604
关键词：
Durability Lightweight Concrete Containing Stalite

项目摘要

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.

Stantec试图开发一些适用于寒冷区域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，用于在海上结构中的潜在应用。然而，尽管该公司在优化了不同的轻质混合物方面进行了试验，但仍然存在有关轻质混凝土耐用性的问题，尤其是在暴露于冰冻和解冻盐的冰冻周期之后。该项目的主要目的是开发一些具有优化强度和耐用性的石材骨料的轻质混合物。该项目尤其着重于发达的混合物的耐用性，以耐冰镇的冰冻和解冻。这些混合物将使用不同的粘合剂含量，不同百分比的轻质坚硬骨料以及不同的补充胶结材料进行设计。该测试程序将包括对新鲜特性，机械性能（压缩，拉伸和弯曲强度）的评估，以及在存在去冰盐的情况下冻结和融化的抗性。该项目的结果将导致增强Stantec的研发团队的知识和专业知识，尤其是在轻质混凝土技术方面。此外，这种合作将在其他项目和业务扩展方面导致公司的潜在增长，从而使加拿大经济受益。