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您的检索式：作者名="LAI Junying"
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| 1 | Influence of Superplasticizer Type and Dosage on Early-age Drying Shrinkage of Cement Paste with Consideration of Pore Size Distribution and Water Loss显示文摘We introduced a parameter r_s(the radius of the pores where the meniscus forms),which is composed of two factors,i e,water loss and cumulative pore size distribution(PSD),to provide a better explanation of the influence of superplasticizers(SPs)on early-age drying shrinkage.In our experiments,it is found that the addition of three types of SPs leads to a significant increase in the early-age drying shrinkage of cement paste,and drying shrinkage increases with the dosage of SPs.Based on the results above,we further studied the mechanism of the effects of SPs on the early-age drying shrinkage of cement paste by PSD and water loss,which are two components of r_s.The experimental results indicate that r_s can be a better index for the early-age drying shrinkage of cement-based materials with SPs than a single factor.In addition,the effects of SPs on other factors such as hydration degree and elastic modulus were also investigated and discussed. | 钱晓倩 YU Congdi ZHANG Lifeng QIAN Kuangliang FANG Minghui LAI Junying | 2020 | Journal of Wuhan University of Technology(Materials Science)2020，35，4： | 1 |
| 2 | Cartilage-inspired hydrogel lubrication strategy显示文摘In nature,when two solid interfaces contact and slide with each other,adverse friction and wear ensue.Lubrication is an important means to reduce them.Fluid film lubrication and boundary lubrication are the most typical lubrication paradigms that are different in the principle of formation.1 More generally,in fluid film lubrication mode,the two sliding surfaces are completely separated by a fluid film with a thickness much larger than the surface asperities.At this time,the energy dissipation is mainly caused by the fluid being sheared.Boundary lubrication occurs when two surfaces are in molecular contact,and the energy dissipation mainly comes from van der Waals force,Coulomb force,and dis-entanglement of surface polymers.Therefore,boundary lubrication is directly related to the physical and chemical properties of the surface. | Wenzhao Li Junying Lai Yan Zu Puxiang Lai | 2022 | The Innovation2022，3，5： | 0 |
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