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
基本信息
- 批准号:RGPIN-2018-06715
- 负责人:
- 金额:$ 1.89万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2020
- 资助国家:加拿大
- 起止时间:2020-01-01 至 2021-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The move towards performance-based specifications brings both innovation and challenges to new concrete infrastructure. Producers have the ability to add new materials as they are no longer constrained by prescriptive limitations. In some cases, these new materials may be yet unproven in concrete construction, but may have benefits of extending service life or decreasing the need or frequency of repair. Another complication of these new methods of specification are that a quantitative assessment must be undertaken not only at the prequalification stage, but over time as the project proceeds. Ideally, these tests should be performed field placed concrete rather than cylinders that have not received the same compaction or curing and certainly not the same non-standard exposure conditions.
The objectives of the program are:
1) Investigate the hydration, strength development and durability of emerging cement systems, with particular attention to nanoparticles.
2) Examine and develop in situ testing methods for durability compliance, specifically, rapid, non-destructive methods, such as absorption and surface resistivity. Establish methods to convert temperature/moisture influences to a standardized condition.
3) Utilize embedded temperature/moisture sensors onsite to better understand processes related to deterioration due to ASR and freezing.
Traditionally, concrete deterioration can be lessened through a three-prong approach of low water to cement ratio, the use of supplementary cementing materials and adequate curing. Unfortunately, many of the supplementary cementing materials, particularly fly ash, do not react with water rather with by-products of cement hydration. In practice, this often translates in low early strength and a delayed period required until adequate strength and durability can be obtained. Nanoparticles have gained interest among the research community due to their ability to act as nucleation sites for cement hydration and therefore overcoming some obstacles associated with other cement replacements.
Water absorption and surface resistivity are rapid and simple non-destructive techniques. However, one disadvantage of both these techniques are that the effects of in-situ moisture and ambient temperature can significantly affect the test results. This research program will further investigate the saturation required to obtain reliable data that can be linked to service life predication or repair requirements.
As concrete is a porous material, water ingress plays a significant role in deterioration. Small wireless temperature and humidity sensors will be used in both lab and outdoor concrete to understand the role of moisture in degradation.
向基于性能的规范的转变为新的混凝土基础设施带来了创新和挑战。生产商有能力添加新材料,因为他们不再受到规定限制的约束。在某些情况下,这些新材料可能尚未在混凝土施工中得到证实,但可能具有延长使用寿命或减少维修需求或频率的好处。这些新的规范方法的另一个复杂之处在于,不仅在资格预审阶段必须进行定量评估,而且在项目进行的过程中也必须进行定量评估。理想情况下,这些测试应该在现场放置的混凝土上进行,而不是在没有经过相同压实或养护的圆柱体上进行,当然也不是在相同的非标准暴露条件下进行。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Nokken, Michelle其他文献
Mechanical behavior of recycled coarse aggregate concrete reinforced with steel fibers under direct shear
- DOI:
10.1016/j.cemconcomp.2017.01.006 - 发表时间:
2017-05-01 - 期刊:
- 影响因子:10.5
- 作者:
Gao, Danying;Zhang, Lijuan;Nokken, Michelle - 通讯作者:
Nokken, Michelle
Compressive behavior of steel fiber reinforced recycled coarse aggregate concrete designed with equivalent cubic compressive strength
- DOI:
10.1016/j.conbuildmat.2017.02.136 - 发表时间:
2017-06-15 - 期刊:
- 影响因子:7.4
- 作者:
Gao, Danying;Zhang, Lijuan;Nokken, Michelle - 通讯作者:
Nokken, Michelle
Nokken, Michelle的其他文献
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{{ truncateString('Nokken, Michelle', 18)}}的其他基金
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:
RGPIN-2018-06715 - 财政年份:2022
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual
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:
RGPIN-2018-06715 - 财政年份:2021
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual
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:
RGPIN-2018-06715 - 财政年份:2019
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual
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:
RGPIN-2018-06715 - 财政年份:2018
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual
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 - 财政年份:2017
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual
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 - 财政年份:2015
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual
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 - 财政年份:2014
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual
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 - 财政年份:2013
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual
Development of a relationship between specifications and in situ testing for concrete durability
建立混凝土耐久性规范和现场测试之间的关系
- 批准号:
312213-2007 - 财政年份:2011
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual
Development of a relationship between specifications and in situ testing for concrete durability
建立混凝土耐久性规范与现场测试之间的关系
- 批准号:
312213-2007 - 财政年份:2010
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual
相似海外基金
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:
RGPIN-2018-06715 - 财政年份:2022
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual
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:
RGPIN-2018-06715 - 财政年份:2021
- 资助金额:
$ 1.89万 - 项目类别:
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Novel polymeric materials with improved durability in the oral environment: tailoring responses to host and bacterial enzymes with anti-proteolytic and ecology-based antimicrobial approaches.
在口腔环境中具有更高耐用性的新型聚合物材料:通过抗蛋白水解和基于生态的抗菌方法定制对宿主和细菌酶的反应。
- 批准号:
10443658 - 财政年份:2019
- 资助金额:
$ 1.89万 - 项目类别:
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:
RGPIN-2018-06715 - 财政年份:2019
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual
Novel polymeric materials with improved durability in the oral environment: tailoring responses to host and bacterial enzymes with anti-proteolytic and ecology-based antimicrobial approaches.
在口腔环境中具有更高耐用性的新型聚合物材料:通过抗蛋白水解和基于生态的抗菌方法定制对宿主和细菌酶的反应。
- 批准号:
10653700 - 财政年份:2019
- 资助金额:
$ 1.89万 - 项目类别:
Novel polymeric materials with improved durability in the oral environment: tailoring responses to host and bacterial enzymes with anti-proteolytic and ecology-based antimicrobial approaches.
在口腔环境中具有更高耐用性的新型聚合物材料:通过抗蛋白水解和基于生态的抗菌方法定制对宿主和细菌酶的反应。
- 批准号:
10228724 - 财政年份:2019
- 资助金额:
$ 1.89万 - 项目类别:
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:
RGPIN-2018-06715 - 财政年份:2018
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual
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 - 财政年份:2017
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual
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 - 财政年份:2015
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual
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 - 财政年份:2014
- 资助金额:
$ 1.89万 - 项目类别:
Discovery Grants Program - Individual