Environmental Chamber for Laboratory Studies of Cement-Based Building Materials

水泥基建筑材料实验室研究环境室

• 批准号: 423351-2012
• 负责人: Panesar, Daman
• 金额: $ 1.95万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=495922
• 关键词: Environmental; Chamber; Laboratory; Studies; Cement

Precast concrete building systems are becoming more prevalent in Canadian construction owing to their ability to accelerate construction schedules, increase flexibility in shapes in sizes, and the economic benefit of mass producing standard structural shapes. Accelerated curing, or steam curing, is an essential part of the precast process which consists of four stages, pre-steaming, ramping, holding at maximum temperature, and cooling. The curing environment typically has a high relative humidity (>95%) and a maximum temperature of 70°C or 60°C for the 'dry' and 'damp' moist category, respectively as specified in CSA23.4-05. It is critical that experimental studies do not exceed the maximum concrete temperature limit because it has been proven to adversely affect the microstructure and durability performance.This research proposal requests funds for an environmental chamber which is necessary to conduct research focused on improving current concrete materials design and precast product manufacturing processes in context with the environment, economics and energy.

预制混凝土建筑系统在加拿大建筑中越来越普遍，因为它们能够加快施工进度，增加形状尺寸的灵活性，以及大规模生产标准结构形状的经济效益。 加速养护或蒸汽养护是预制工艺的重要组成部分，该工艺包括四个阶段：预蒸、升温、保持在最高温度和冷却。固化环境通常具有较高的相对湿度（>95%），对于“干燥”和“潮湿”潮湿类别，最高温度分别为70°C或60°C，如CSA 23.4 -05中所规定。实验研究不应超过混凝土的最高温度极限，因为它已被证明会对微观结构和耐久性性能产生不利影响。本研究提案要求为环境室提供资金，该环境室是进行研究所必需的，重点是在环境、经济和能源方面改进当前的混凝土材料设计和预制产品制造工艺。