Hongjian Du
Email Address
ceedhj@nus.edu.sg
Organizational Units
9 results
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Now showing 1 - 9 of 9
Publication Simulation on the Self-Compacting Concrete by an Enhanced Lagrangian Particle Method(2016) Wu, J; Liu, X; Xu, H; Du, H; CIVIL AND ENVIRONMENTAL ENGINEERINGThe industry has embraced self-compacting concrete (SCC) to overcome deficiencies related to consolidation, improve productivity, and enhance safety and quality. Due to the large deformation at the flowing process of SCC, an enhanced Lagrangian particle-based method, Smoothed Particles Hydrodynamics (SPH) method, though first developed to study astrophysics problems, with its exceptional advantages in solving problems involving fragmentation, coalescence, and violent free surface deformation, is developed in this study to simulate the flow of SCC as a non-Newtonian fluid to achieve stable results with satisfactory convergence properties. Navier-Stokes equations and incompressible mass conservation equations are solved as basics. Cross rheological model is used to simulate the shear stress and strain relationship of SCC. Mirror particle method is used for wall boundaries. The improved SPH method is tested by a typical 2D slump flow problem and also applied to L-box test. The capability and results obtained from this method are discussed. © 2016 Jun Wu et al.Publication Evaluation of aggregates, fibers and voids distribution in 3D printed concrete(Taylor & Francis, 2022-08-22) Yu Zhang; Yunsheng Zhang; Lin Yang; Guojian Liu; Hongjian Du; CIVIL AND ENVIRONMENTAL ENGINEERINGPublication Alkali-silica reaction of seawater-mixed mortar(Taylor & Francis, 2024-05-08) Wei Zhang; Hongjian Du; Sze Dai Pang; CIVIL AND ENVIRONMENTAL ENGINEERINGPublication Effect of nano-silica on the mechanical and transport properties of lightweight concrete(Elsevier, 2015) Du, Hongjian; Du, Suhuan; Liu, Xuemei; CIVIL & ENVIRONMENTAL ENGINEERINGPublication Hydration mechanism and mechanical properties of a developed low-carbon and lightweight strain-hardening cementitious composites(Taylor & Francis, 2024-01-05) wenhua chen; Qiang Wang; Zhiyi Huang; Hongjian Du; CIVIL AND ENVIRONMENTAL ENGINEERINGPublication A model to estimate the durability performance of both normal and light-weight concrete(Elsevier, 2015) Liu, Xuemei; Du, Hongjian; Zhang, Min-Hong; CIVIL & ENVIRONMENTAL ENGINEERINGPublication Effect of early CO2 curing on the chloride induced steel bars corrosion in cement mortars(Taylor & Francis, 2024-05-03) Baixing Song; Xiang Hu; Sze Dai Pang; Hongjian Du; Guojun Ke; Caijun Shi; CIVIL AND ENVIRONMENTAL ENGINEERINGPublication Enhancement of barrier properties of cement mortar with graphene nanoplatelet(Elsevier, 2015) Du, Hongjian; Pang, Sze Dai; CIVIL & ENVIRONMENTAL ENGINEERINGPublication Effect of colloidal nano-silica on the mechanical and durability performances of mortar(Trans Tech Publications Ltd, 2015) Du H; Pang S.D; CIVIL & ENVIRONMENTAL ENGINEERING