- document
-
Wang, Jianyun (author), Zhang, Rui (author), Hou, Fuxing (author), Ye, G. (author)Microbial induced calcium carbonate precipitation (MICP) technology has been successfully used to enhance the properties of recycled concrete aggregates. However, the complex source and varied physical and chemical properties of recycled aggregates may have influence on the modification efficiency since microbes are often sensitive to the...journal article 2024
- document
-
Tong, Liang-yu (author), Xiong, Qing Xiang (author), Zhang, Zhidong (author), Chen, Xiangsheng (author), Ye, G. (author), Liu, Qing feng (author)This paper develops a novel lattice diffusive model to quantitatively study the chloride diffusion coefficient in unsaturated cementitious materials, in which the pore voxels are redistributed to make a better representation of a real microstructure of hardened cement paste. Considering the hierarchical microstructure and different drying...journal article 2023
- document
-
Zhang, Y. (author), Ye, G. (author), Yang, Zhengxian (author)Concrete is rarely saturated. Reliable durability design of marine concrete structures requires a solid understanding of the long-term chloride transport in unsaturated concretes. This paper presents a critical analysis of the time-dependent chloride diffusion coefficient in unsaturated cementitious materials exposed to marine environment....journal article 2020
- document
-
Zhang, Y. (author), Yang, Zhengxian (author), Ye, G. (author)Conceptual analysis is performed to examine the effects of pore features on the water continuity in unsaturated porous systems. The roles of pore features in relative chloride diffusion coefficient (D<sub>rc</sub>) of mortar specimens at various degrees of water saturation (S<sub>w</sub>) were studied based on mercury intrusion porosimetry...journal article 2020
- document
-
Zhang, Y. (author), Ye, G. (author)An analytical model for predicting the relative chloride diffusion coefficient in cementitious materials at different degrees of water saturation is presented in this paper. The model is developed based on the Nernst-Einstein equation and conductivity of cementitious electrolyte, as well as on moisture distribution in the pore structure. Good...journal article 2019
- document
-
Nedeljković, Marija (author), Šavija, B. (author), Zuo, Y. (author), Lukovic, M. (author), Ye, G. (author)The aim of this paper was to investigate the effect of natural carbonation on the pore structure, and elastic modulus (E<sub>m</sub>) of alkali-activated fly ash (FA) and ground granulated blast furnace slag (GBFS) pastes after one year of exposure in the natural laboratory conditions. The chemical changes due to carbonation were examined by...journal article 2018
- document
-
Dong, H. (author), Zhang, H. (author), Zuo, Y. (author), Gao, P. (author), Ye, G. (author)Mercury intrusion porosimetry (MIP) measurements are widely used to determine pore throat size distribution (PSD) curves of porous materials. The pore throat size of porous materials has been used to estimate their compressive strength and air permeability. However, the effect of sample size on the determined PSD curves is often overlooked....journal article 2018