Imbibition in kaolinite plaster under finite water amounts

IF 3.4 3区 工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY
Wenqiang Zuo, Youssef Bazi, Patrick Belin, Emmanuel Keita
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Abstract

This study addresses the imbibition kinetics of finite water amounts in kaolinite plasters. Using an X-ray tomograph with in-situ liquid addition, 2D radiograph images precisely measure the water imbibition and distribution. Two distinct regimes are observed in the presence of a limited water reservoir. Following a classical penetration scaling with the square root of time, the progression continues slowly. The addition of sand minimally impacts these kinetics, only modifying the porosity volume. Imbibition front kinetics is described by analyzing unsaturated flow under limited water conditions, particularly in scenarios where water availability is restricted. The study underscores the importance of investigating imbibition under finite water amounts, a common degradation scenario. The physical understanding aims to contribute to the enhanced design of earthen plaster.

Abstract Image

Abstract Image

有限水量下高岭石灰泥中的沉积作用
本研究探讨了高岭石抹灰中有限水量的浸润动力学。利用带有原位液体添加功能的 X 射线层析成像仪,二维射线图像可精确测量水的浸润和分布。在存在有限储水的情况下,可以观察到两种截然不同的状态。根据经典的渗透率与时间平方根的比例关系,渗透率的增长缓慢。沙子的加入对这些动力学的影响很小,只是改变了孔隙度体积。通过分析有限水量条件下的非饱和水流,特别是在水供应受限的情况下,对浸润前沿动力学进行了描述。这项研究强调了研究有限水量条件下浸润的重要性,这是一种常见的降解情况。对这一物理现象的理解有助于加强土质抹灰的设计。
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来源期刊
Materials and Structures
Materials and Structures 工程技术-材料科学:综合
CiteScore
6.40
自引率
7.90%
发文量
222
审稿时长
5.9 months
期刊介绍: Materials and Structures, the flagship publication of the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), provides a unique international and interdisciplinary forum for new research findings on the performance of construction materials. A leader in cutting-edge research, the journal is dedicated to the publication of high quality papers examining the fundamental properties of building materials, their characterization and processing techniques, modeling, standardization of test methods, and the application of research results in building and civil engineering. Materials and Structures also publishes comprehensive reports prepared by the RILEM’s technical committees.
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