Please use this identifier to cite or link to this item:
|Title:||Development of fiber-reinforced reactive magnesia cement composites||Authors:||Ong, Nicole Shi Qi||Keywords:||DRNTU::Engineering||Issue Date:||2016||Abstract:||Fiber-reinforced strain-hardening cementitious composites (SHCC) are commonly used in constructing new buildings and repairing deteriorating infrastructures. However, most SHCC have a high Portland cement (PC) content that requires high energy to produce and emits large amount of CO2 gas during production. On the other hand, reactive Magnesia (MgO) cement is able to sequester CO2 during hardening, hence it has a sustainability advantage over PC. Therefore, the focus of this study is to develop a fiber-reinforced MgO-based SHCC. Rheology tests were conducted to investigate the rheological properties of MgO-based SHCC and how it differs from PC-based SHC. It was found out that MgO-based SHCC behaved similarly to PC-based SHCC. It also provides adequate plastic viscosity that can improve tensile properties upon adequate carbonation and hardening. Single-fiber pullout tests were also conducted to study the bond between the fiber and matrix. It was revealed that PVA fibers with oil coatings performed better in composites in improving tensile properties. Findings from both tests were then used as a guide to design the MgO-based SHCC.||URI:||http://hdl.handle.net/10356/67641||Rights:||Nanyang Technological University||Fulltext Permission:||restricted||Fulltext Availability:||With Fulltext|
|Appears in Collections:||CEE Student Reports (FYP/IA/PA/PI)|
Files in This Item:
|CT-16AB Draft of Final Report_Ong Shi Qi Nicole.pdf|
|Main article||3.68 MB||Adobe PDF||View/Open|
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.