A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Study on weathering mechanism of masonry bricks of ancient temples in Shanxi province using Dingxiang Hongfu temple masonry brick
Graphical abstract The surface of the weathering brick is porous with cavities. There are four distinctly different morphologies from the magnified surface image, which shows different weathering mechanisms of ancient bricks lead to different conditions of bricks. Display Omitted
Highlights Showing the surface of the efflorescence brick presents four typical morphologies. Using thermodynamic data to analyze weathering mechanism of bricks. Analyzing weathering process of ancient bricks from the surface to internal.
Abstract The weathering mechanism of ancient bricks is explained more specifically through chemical composition, phase composition and microscopic morphology of different parts of masonry bricks, combined with thermodynamic calculations. A mercury intrusion porosimeter is providing information on the capillary pores. The content of chloride (Cl) and sulfur (S) species on the surface of ancient bricks is much higher than that in the interior. The surface of the efflorescence brick contains more salts such as NaCl, Na2SO4, CaSO4 and K-type feldspar and mainly presents four typical morphologies: columnar, spherical, needle-like and fine powder. It is shown that the underground water continuously flows inside the brick and migrates to the surface through the capillary networks. The pressure generated when soluble salts crystallize and the water freezing are the main factors causing the weathering and destruction (mechanical damage) of the bricks. In addition, faces of the brick exposed to greater acid rain react to form new salts which also are a contributing factor to the destruction of ancient bricks, with crystallization, dissolution, and loss of these salts. In this paper, thermodynamic calculation is used to propose an important method for the study of weathering mechanism, which provides a theoretical basis for the further protection of ancient bricks.
Study on weathering mechanism of masonry bricks of ancient temples in Shanxi province using Dingxiang Hongfu temple masonry brick
Graphical abstract The surface of the weathering brick is porous with cavities. There are four distinctly different morphologies from the magnified surface image, which shows different weathering mechanisms of ancient bricks lead to different conditions of bricks. Display Omitted
Highlights Showing the surface of the efflorescence brick presents four typical morphologies. Using thermodynamic data to analyze weathering mechanism of bricks. Analyzing weathering process of ancient bricks from the surface to internal.
Abstract The weathering mechanism of ancient bricks is explained more specifically through chemical composition, phase composition and microscopic morphology of different parts of masonry bricks, combined with thermodynamic calculations. A mercury intrusion porosimeter is providing information on the capillary pores. The content of chloride (Cl) and sulfur (S) species on the surface of ancient bricks is much higher than that in the interior. The surface of the efflorescence brick contains more salts such as NaCl, Na2SO4, CaSO4 and K-type feldspar and mainly presents four typical morphologies: columnar, spherical, needle-like and fine powder. It is shown that the underground water continuously flows inside the brick and migrates to the surface through the capillary networks. The pressure generated when soluble salts crystallize and the water freezing are the main factors causing the weathering and destruction (mechanical damage) of the bricks. In addition, faces of the brick exposed to greater acid rain react to form new salts which also are a contributing factor to the destruction of ancient bricks, with crystallization, dissolution, and loss of these salts. In this paper, thermodynamic calculation is used to propose an important method for the study of weathering mechanism, which provides a theoretical basis for the further protection of ancient bricks.
Study on weathering mechanism of masonry bricks of ancient temples in Shanxi province using Dingxiang Hongfu temple masonry brick
Fan, Yongli (author) / Song, Shaolei (author) / Huang, Jizhong (author) / Lu, Yi (author) / Liu, Jingbo (author) / Zhen, Qiang (author) / Bashir, Sajid (author)
Construction and Building Materials ; 222 ; 500-510
2019-06-09
11 pages
Article (Journal)
Electronic Resource
English
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