TY - GEN
T1 - Hygroscopic Performance of Sulphate-Based MgO Construction Boards
AU - Olofinjana, Ayodele
AU - Jays, Nicholas
AU - Young, David
AU - Mata, Jitendra
AU - Haque, Rezwanul
N1 - Funding Information:
Acknowledgements. The authors acknowledge AINSE for awarding grant No. 8285 to carry out neutron diffraction studies at ANSTO.
Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.
PY - 2022/4
Y1 - 2022/4
N2 - Magnesium oxide (MgO) construction boards are currently being used to replace fibre cement boards in various construction applications. This include usage in external claddings where reports of hygroscopic degradation were linked to presence of residual chlorides originating from the manufacturing process. The industry has responded with new products that are being marketed as Magnesium Oxysulphate (MOS) boards that are still essentially MgO based but are manufactured from non-chloride precursor. In this paper the hygroscopic performance of the new MOS based MgO is compared with some other commercially Chloride containing samples. It is shown that MOS based samples exhibited lower water absorption comparable to fibre cement boards. No evidence of chloride in the new MOS based MgO boards was found by Energy Dispersive Spectroscopy (EDS). Small angle neutron scattering (SANS), of dry samples and hydrated samples using deuterated water and normal water showed that the better hygroscopic properties of MOS based MgO board was not related to structural morphological modification and are more likely due to the absence of residual chloride in the new generation MgO boards.
AB - Magnesium oxide (MgO) construction boards are currently being used to replace fibre cement boards in various construction applications. This include usage in external claddings where reports of hygroscopic degradation were linked to presence of residual chlorides originating from the manufacturing process. The industry has responded with new products that are being marketed as Magnesium Oxysulphate (MOS) boards that are still essentially MgO based but are manufactured from non-chloride precursor. In this paper the hygroscopic performance of the new MOS based MgO is compared with some other commercially Chloride containing samples. It is shown that MOS based samples exhibited lower water absorption comparable to fibre cement boards. No evidence of chloride in the new MOS based MgO boards was found by Energy Dispersive Spectroscopy (EDS). Small angle neutron scattering (SANS), of dry samples and hydrated samples using deuterated water and normal water showed that the better hygroscopic properties of MOS based MgO board was not related to structural morphological modification and are more likely due to the absence of residual chloride in the new generation MgO boards.
KW - Hygroscopic performance
KW - Magnesium oxide board
KW - Magnesium Oxysulphate (MOS)
UR - http://www.scopus.com/inward/record.url?scp=85128977637&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-90532-3_30
DO - 10.1007/978-3-030-90532-3_30
M3 - Conference Paper published in Proceedings
AN - SCOPUS:85128977637
SN - 9783030905316
T3 - Lecture Notes in Networks and Systems
SP - 390
EP - 401
BT - Advances in Manufacturing Processes, Intelligent Methods and Systems in Production Engineering - Progress in Application of Intelligent Methods and Systems in Production Engineering
A2 - Batako, Andre
A2 - Burduk, Anna
A2 - Karyono, Kanisius
A2 - Chen, Xun
A2 - Wyczólkowski, Ryszard
PB - Springer Science and Business Media Deutschland GmbH
T2 - Global Congress on Manufacturing and Management, GCMM 2021
Y2 - 7 June 2021 through 9 June 2021
ER -