A mix design approach to reduce early-age thermal cracking of concrete

减少混凝土早期热裂的配合比设计方法

• 批准号: LP150100725
• 负责人: Prof Arnaud Castel
• 金额: $ 20.81万
• 依托单位: The University of New South Wales
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2016
• 资助国家: 澳大利亚
• 起止时间: 2016-02-05 至 2018-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP150100725
• 关键词: mix; design; approach; reduce; early

The aim of this project is to determine the fundamental mechanics of early age thermal cracking in mass concrete elements and in members with high cement contents, and to develop a tool to predict early age cracking. Early age thermal cracking in concrete due to heat of hydration and thermal gradients is a major engineering problem and is undesirable for durability and structural performance, as well as aesthetics and project economics. The research outputs include new theories and relationships from which advanced engineering models will be derived that will support improved design and construction of mass concrete elements.

该项目的目的是确定大体积混凝土构件和高水泥含量构件早期热开裂的基本机制，并开发一种预测早期开裂的工具。由于水化热和热梯度引起的混凝土早期热开裂是一个主要的工程问题，对于耐久性和结构性能，以及美学和项目经济都是不可取的。研究成果包括新的理论和关系，从中可以推导出先进的工程模型，这将支持改进大体积混凝土元件的设计和施工。