Improving the Process for Cold Weather Concreting: Novel Concrete Mixtures and Innovative Curing Methods

改进寒冷天气混凝土施工工艺:新型混凝土混合物和创新养护方法

基本信息

  • 批准号:
    RGPIN-2020-05668
  • 负责人:
  • 金额:
    $ 3.13万
  • 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:
    2021
  • 资助国家:
    加拿大
  • 起止时间:
    2021-01-01 至 2022-12-31
  • 项目状态:
    已结题

项目摘要

In cold climate countries, freezing temperatures impede construction activities or put them on hold until warmer seasons, as concreting activities under such conditions are quite challenging. This leads to considerable socioeconomic losses. Ready-mix concrete suppliers have to frequently conduct exhaustive trial batches with heated constituents and multiple admixture systems to produce winter concrete, resulting in technical issues such as high internal temperatures of concrete or loss of target fresh, mechanical and durability properties of this concrete. Moreover, contractors have to implement thorough heating and hoarding practices at job sites to heat-cure concrete elements and their surrounding areas in winter, which entail additional materials, energy and labor resources with associated delays in productivity and extra costs. This Discovery Grant proposal aims at utilizing nanoparticles (size scale of 1-100 billionth of a meter) and phase change materials (thermal storage/release reservoirs) to mitigate challenges of cold weather concreting. This research program will: i) develop innovative concrete mixtures for cold weather that incorporate nanoparticles with antifreeze admixtures and test their fresh, hardened and durability properties, ii) investigate the functionality of phase change materials as a novel protection method for mitigating the effects of freezing temperatures on these concretes, iii) build intelligence-based models for predicting their behavior under field conditions, and iv) conduct verification studies on large-scale elements to pave the way for field applications. This novel research program stems from a paradigm shift, which employs nanotechnology to engineer the next generation of concrete. The originality of this work lies in elucidating the interactive roles of nanomaterials, antifreeze admixtures and phase change materials in modifying cementitious systems produced under low/freezing temperatures and rigorously testing their stability under harsh conditions of transportation and wastewater infrastructure, with predictive modeling. This research will advance the current knowledge on cold-weather concreting, which is a critical issue for Canada and other cold regions. It will mobilize novel projects on the use of innovative materials and protection methods for concreting at a range of low and freezing temperatures, which is envisioned to enable longer construction and maintenance of concrete elements/structures in late fall, winter and early spring with better productivity rates and offer developmental solutions to northern parts of Canada. Throughout the course of this research program, practical outcomes (e.g. innovative concrete mixture designs for cold weather and associated protection requirements) can be incorporated in construction and maintenance specifications for concrete in Canadian jurisdictions and standards for concrete, with a measurable impact on the construction industry in Canada and elsewhere.
在气候寒冷的国家,冰冻的温度会阻碍施工活动,或将其搁置到温暖的季节,因为在这种条件下的混凝土施工活动非常具有挑战性。这造成了巨大的社会经济损失。预拌混凝土供应商必须经常使用加热的成分和多种外加剂系统进行详尽的试验批次以生产冬季混凝土,从而导致技术问题,例如混凝土的高内部温度或该混凝土的目标新鲜度、机械和耐久性性能的损失。此外,承包商必须在施工现场实施彻底的加热和囤积措施,以在冬季热固化混凝土元件及其周围区域,这需要额外的材料、能源和劳动力资源,从而导致生产率和额外成本的相关延迟。 这项发现补助金提案旨在利用纳米颗粒(1- 1000亿分之一米的尺寸尺度)和相变材料(热存储/释放水库)来减轻寒冷天气混凝土的挑战。这项研究计划将:i)开发用于寒冷天气的创新混凝土混合物,其将纳米颗粒与防冻剂掺合,并测试其新鲜、硬化和耐久性,ii)研究相变材料的功能性,作为减轻冻结温度对这些混凝土的影响的新型保护方法,iii)建立基于智能的模型,用于预测它们在现场条件下的行为,以及iv)进行大型元件的验证研究,为实地应用铺路。这项新颖的研究计划源于一种范式转变,它采用纳米技术来设计下一代混凝土。这项工作的独创性在于阐明纳米材料,防冻剂和相变材料在低温/冷冻温度下生产的水泥系统中的相互作用,并在运输和废水基础设施的恶劣条件下严格测试其稳定性,并进行预测建模。 这项研究将推进目前的知识,在寒冷的天气混凝土,这是一个关键问题,加拿大和其他寒冷地区。该项目将动员开展新的项目,利用创新材料和保护方法,在低温和冰冻温度范围内浇筑混凝土,预计这将使混凝土构件/结构在秋末、冬季和早春的建造和维护时间更长,生产率更高,并为加拿大北方地区提供发展解决方案。在整个研究计划的过程中,实际成果(例如,创新的混凝土混合物设计寒冷的天气和相关的保护要求)可以纳入加拿大司法管辖区和混凝土标准的混凝土施工和维护规范,对加拿大和其他地方的建筑业产生可衡量的影响。

项目成果

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Bassuoni, MohamedTamer其他文献

Bassuoni, MohamedTamer的其他文献

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{{ truncateString('Bassuoni, MohamedTamer', 18)}}的其他基金

Improving the Process for Cold Weather Concreting: Novel Concrete Mixtures and Innovative Curing Methods
改进寒冷天气混凝土施工工艺:新型混凝土混合物和创新养护方法
  • 批准号:
    RGPIN-2020-05668
  • 财政年份:
    2022
  • 资助金额:
    $ 3.13万
  • 项目类别:
    Discovery Grants Program - Individual
High-performance Nano-Modified Cementitious Composites Comprising Multi-Scale Fibres for Concrete Flatwork
用于混凝土平面的包含多尺度纤维的高性能纳米改性水泥基复合材料
  • 批准号:
    561310-2020
  • 财政年份:
    2021
  • 资助金额:
    $ 3.13万
  • 项目类别:
    Alliance Grants
Innovative nano-based coatings for protection of concrete
用于保护混凝土的创新纳米涂料
  • 批准号:
    570374-2021
  • 财政年份:
    2021
  • 资助金额:
    $ 3.13万
  • 项目类别:
    Alliance Grants
Improving the Process for Cold Weather Concreting: Novel Concrete Mixtures and Innovative Curing Methods
改进寒冷天气混凝土施工工艺:新型混凝土混合物和创新养护方法
  • 批准号:
    RGPIN-2020-05668
  • 财政年份:
    2020
  • 资助金额:
    $ 3.13万
  • 项目类别:
    Discovery Grants Program - Individual
Nano-modified Concrete Incorporating Industrial Waste for Sustainable Infrastructure
纳米改性混凝土纳入工业废物可持续基础设施
  • 批准号:
    RGPIN-2014-04024
  • 财政年份:
    2019
  • 资助金额:
    $ 3.13万
  • 项目类别:
    Discovery Grants Program - Individual
Nano-modified Concrete Incorporating Industrial Waste for Sustainable Infrastructure
纳米改性混凝土纳入工业废物可持续基础设施
  • 批准号:
    RGPIN-2014-04024
  • 财政年份:
    2018
  • 资助金额:
    $ 3.13万
  • 项目类别:
    Discovery Grants Program - Individual
Nano-modified Concrete Incorporating Industrial Waste for Sustainable Infrastructure
纳米改性混凝土纳入工业废物可持续基础设施
  • 批准号:
    RGPIN-2014-04024
  • 财政年份:
    2017
  • 资助金额:
    $ 3.13万
  • 项目类别:
    Discovery Grants Program - Individual
Nano-modified Concrete Incorporating Industrial Waste for Sustainable Infrastructure
纳米改性混凝土纳入工业废物可持续基础设施
  • 批准号:
    RGPIN-2014-04024
  • 财政年份:
    2016
  • 资助金额:
    $ 3.13万
  • 项目类别:
    Discovery Grants Program - Individual
Nano-modified Concrete Incorporating Industrial Waste for Sustainable Infrastructure
纳米改性混凝土纳入工业废物可持续基础设施
  • 批准号:
    RGPIN-2014-04024
  • 财政年份:
    2015
  • 资助金额:
    $ 3.13万
  • 项目类别:
    Discovery Grants Program - Individual
Functionality of Zinc Anodes in Repaired Concrete Structures
锌阳极在修复混凝土结构中的功能
  • 批准号:
    485408-2015
  • 财政年份:
    2015
  • 资助金额:
    $ 3.13万
  • 项目类别:
    Engage Grants Program

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  • 项目类别:
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