Drop shape tensiometer for measurement of surface energies in cementitious materials

用于测量水泥材料表面能的水滴形张力计

• 批准号: 345402-2007
• 负责人: Jolicoeur, Carmel
• 金额: $ 2.77万
• 依托单位: Université de Sherbrooke
• 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: 2006
• 资助国家: 加拿大
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=325693
• 关键词: Drop; shape; tensiometer; measurement; surface

The equipment will be used to investigate the origin of shrinkage phenomena occurring in cementitious materials upon setting and hardening. In such materials, shrinkage induces important internal stresses, which can lead to micro-cracking and premature deterioration. It is thus most important to understand and control the fundamental processes, which govern the shrinkage behavior of cementitious materials. To achieve this goal, we will perform selected chemical approaches to alter the porous network of cementitious materials, and study the influence of these modifications on 1- the shrinkage behavior of the materials as function of time and 2- the course of microscopic processes contributing to the observed shrinkage. Our approach will focus largely on studies of interfacial phenomena in the porous matrices; for such studies, the specific equipment required is essential.

该设备将用于研究水泥材料凝固和硬化时发生的收缩现象的起源。在这种材料中，收缩引起重要的内应力，这可能导致微裂纹和过早劣化。因此，了解和控制控制水泥基材料收缩行为的基本过程是最重要的。为了实现这一目标，我们将进行选定的化学方法来改变水泥材料的多孔网络，并研究这些修改对1-材料的收缩行为随时间的变化和2-微观过程的过程中，有助于观察到的收缩的影响。我们的方法将主要集中在多孔基质中界面现象的研究上;对于此类研究，所需的特定设备至关重要。