A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Strength of Dvāravatī Fired-Clay Bricks Related to Mineral Components in Fa Daed Song Yang and U Thong Ancient City, Thailand
A comparative study on mineral components and strengths of ancient fired-clay bricks in Dvāravatī Period is conducted on Fa Daed Song Yang (FDSY) and U Thong (UT), Thailand. The FDSY ancient city is now located in Kalasin Province, northeast Thailand. The UT ancient city is currently situated in Suphan Buri Province, central Thailand. These ancient brick remnants were sampled for comparative analysis to obtain information on mineral components and mechanical characteristics. The primary conclusion of the FDSY ancient bricks is that their strengths are regulated by the quartz-tridymite-cristobalite phase transformation of 57–69% and also clays of biotite, clinochlore, kaolinite, and muscovite of 15%. They show apparent plastic deformation with a yield strength of 1.0–1.6 MPa and elastic modulus of 100–230 MPa. The uniaxial compressive strength of the UT ancient bricks depends on quartz group under quartz-tridymite-cristobalite and also coesite-stishovite phase of totally 81–91%. Clay components in the UT similar to the FDSY are found in the range of 1–4%. Yield strengths and elastic modulus of the UT are present at 1–3 MPa and 247–291 MPa, respectively, which are higher than the FDSY bricks. The compressive strengths and mineral components of both ancient bricks are related to the firing temperature at 1,000–1,200 ℃. Mineral characteristics in the FDSY bricks presented by low silica group and high clays indicate sediment trapped in placid lakes. Their contents are inversely proportional to the UT bricks which are referred to sediments in mighty rivers and deposited in delta/estuary with very fine sand accumulation.
Strength of Dvāravatī Fired-Clay Bricks Related to Mineral Components in Fa Daed Song Yang and U Thong Ancient City, Thailand
A comparative study on mineral components and strengths of ancient fired-clay bricks in Dvāravatī Period is conducted on Fa Daed Song Yang (FDSY) and U Thong (UT), Thailand. The FDSY ancient city is now located in Kalasin Province, northeast Thailand. The UT ancient city is currently situated in Suphan Buri Province, central Thailand. These ancient brick remnants were sampled for comparative analysis to obtain information on mineral components and mechanical characteristics. The primary conclusion of the FDSY ancient bricks is that their strengths are regulated by the quartz-tridymite-cristobalite phase transformation of 57–69% and also clays of biotite, clinochlore, kaolinite, and muscovite of 15%. They show apparent plastic deformation with a yield strength of 1.0–1.6 MPa and elastic modulus of 100–230 MPa. The uniaxial compressive strength of the UT ancient bricks depends on quartz group under quartz-tridymite-cristobalite and also coesite-stishovite phase of totally 81–91%. Clay components in the UT similar to the FDSY are found in the range of 1–4%. Yield strengths and elastic modulus of the UT are present at 1–3 MPa and 247–291 MPa, respectively, which are higher than the FDSY bricks. The compressive strengths and mineral components of both ancient bricks are related to the firing temperature at 1,000–1,200 ℃. Mineral characteristics in the FDSY bricks presented by low silica group and high clays indicate sediment trapped in placid lakes. Their contents are inversely proportional to the UT bricks which are referred to sediments in mighty rivers and deposited in delta/estuary with very fine sand accumulation.
Strength of Dvāravatī Fired-Clay Bricks Related to Mineral Components in Fa Daed Song Yang and U Thong Ancient City, Thailand
RILEM Bookseries
Endo, Yohei (editor) / Hanazato, Toshikazu (editor) / Promkotra, Sarunya (author) / Trakoolngam, Kritika (author) / Cotanont, Thidarat (author) / Kangsadan, Tawiwan (author)
International Conference on Structural Analysis of Historical Constructions ; 2023 ; Kyoto, Japan
Structural Analysis of Historical Constructions ; Chapter: 27 ; 322-331
RILEM Bookseries ; 47
2023-09-04
10 pages
Article/Chapter (Book)
Electronic Resource
English
Experimental Case Studies on Clay Fired Bricks Compressive Strength
| Tema Archive | 2014
Experimental Case Studies on Clay Fired Bricks Compressive Strength
| British Library Online Contents | 2014
Experimental Case Studies on Clay Fired Bricks Compressive Strength
| Trans Tech Publications | 2014
Experimental Case Studies on Clay Fired Bricks Compressive Strength
| British Library Online Contents | 2014