Author
Hua Zhang
Bio: Hua Zhang is an academic researcher from Zhejiang University of Technology. The author has contributed to research in topics: Agglomerate & Fumed silica. The author has an hindex of 1, co-authored 1 publications receiving 224 citations.
Papers
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TL;DR: In this article, the influence of nano-silica agglomeration on microstructure and properties of the hardened cement-based materials was investigated by using precipitated silica (PS) with very large agglomers and fumed silica with much smaller ones as nanoscale additives.
296 citations
Cited by
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TL;DR: In this article, the effect of incorporating nanomaterials in low dosages to the fabrication, workability, hydration, microstructure, and mechanical properties of cement-based composites are comprehensively reviewed.
512 citations
TL;DR: In this paper, the effects of nanosilica addition on hydration kinetics, microstructure refinement, fresh/hardened properties and durability characteristics of concrete are summarized.
505 citations
TL;DR: In this article, the authors presented the effect of nano-silica on the hydration and microstructure development of UltraHigh Performance Concrete (UHPC) with a low binder amount.
407 citations
TL;DR: In this article, the durability properties of concrete containing nano-silica at dosages of 0.3% and 0.9% were investigated, and the pore size distribution indicated that the large capillary pores were refined by the nano silica, due to the combined contribution of the nano-filler effect and the pozzolanic reaction.
255 citations
Journal Article•
TL;DR: In this article, the durability properties of concrete containing nano-silica at dosages of 0.3% and 0.9% were investigated, and the pore size distribution indicated that the large capillary pores were refined by the nano silica, due to the combined contribution of the nano-filler effect and the pozzolanic reaction.
Abstract: This study investigated the durability properties of concrete containing nano-silica at dosages of 0.3% and 0.9%, respectively. Due to the nano-filler effect and the pozzolanic reaction, the microstructure became more homogeneous and less porous, especially at the interfacial transition zone (ITZ), which led to reduced permeability. Tests on the durability properties verified the beneficial effects of nano-silica. The channels for harmful agents through the cement composites were partially filled and blocked. The pore size distribution also indicated that the large capillary pores were refined by the nano-silica, due to the combined contribution of the nano-filler effect and the pozzolanic reaction.
246 citations