Improved durability testing for field placed concrete and emerging cement systems

改进现场浇筑混凝土和新兴水泥系统的耐久性测试

• 批准号: 312213-2013
• 负责人: Nokken, Michelle
• 金额: $ 1.75万
• 依托单位: Concordia University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=526438
• 关键词: Improved; durability; testing; field; placed

Increasingly, concrete structures are built according to performance-based specifications. This leads to innovation in the industry as producers are able to utilize traditional materials in new ways or unconventional materials since they are no longer constrained by prescriptive requirements. The proposed program will include durability investigations of emerging cement systems; such as limestone cements, newly developed blended cements, and alkali-activated systems. Performance specifications typically consist of standardized tests performed on site-produced specimens. Non-conformance to performance measures can be traced to improper mixture delivery, but could also result from poor construction practice. As the latter is not well studied, it is planned to examine the sensitivity of current durability tests for the detection (identification) of poorly cured or consolidated concrete.

混凝土结构越来越多地根据基于性能的规范建造。这导致了行业的创新，因为生产商能够以新的方式利用传统材料或非传统材料，因为它们不再受到规定要求的限制。拟议的计划将包括新兴水泥系统的耐久性研究，如石灰石水泥，新开发的混合水泥和碱激活系统。性能规范通常包括对现场生产的样品进行的标准化测试。不符合性能措施可以追溯到不适当的混合料交付，但也可能是由于不良的施工实践。由于后者没有得到很好的研究，计划检查目前的耐久性测试的检测（识别）不良固化或巩固混凝土的敏感性。