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Publications (37)
The limited availability of high‐quality kaolin clay restricts the large‐scale operation of limestone calcined clay cement (LC³) in concrete production, especially in these resource‐scare coastal areas like Hong Kong and Singapore. In this study, locally abundant wastes of glass and marine clay were valorized to develop a novel glass calcined clay...
Considering the wide utilization of multi-component supplementary cementitious materials in recycled aggregate concrete, an intelligent prediction of comprehensive mechanical properties of this sustainable low-carbon concrete was proposed in this study using hybrid machine learning algorithms, rather than conducting tremendous experiments to establ...
Aiming to promote applications of carbonated recycled concrete fines (CRCF) as a low-carbon alternative to ordinary Portland cement (OPC), this study explored the effect of CRCF on the early hydration kinetics of OPC paste. The results show that CRCF is not only a highly active pozzolanic material but also an effective accelerator affecting the ear...
A novel carbon capture (CC) coating was developed using CO2-activated dicalcium silicate, aiming to enhance the durability of concrete structures and sequestrate CO2. The carbonation products, microstructure and effects validation of the CC coating were investigated. The results showed that the CC coating could achieve a relatively high carbonation...
The sustainable management of solid wastes and the development of alternative construction materials are essential issues that have plagued urban green development, especially for some resource-constrained island countries or cities. The efficient resource utilization of solid wastes as the alternative of construction materials during the concrete...
Utilization of mussel shell as a construction material has a promising application potential to meet the challenges of mussel shell wastes treatment in coastal cities. However, the inferior mechanical properties of mussel shell aggregate concrete (MSAC) has restricted its wider promotion in high performance applications due to the inferior properti...
Conventional supplementary cementitious materials would decrease the alkalinity of pore solution, which is not beneficial for the stabilization of passive film on the surface of steel bars in the marine environment. By leverage of the alkali-rich and pozzolanic characteristics, this study first valorized waste glass powder (GP) to enhance the corro...
The low cyclic loading tests on two steel frames infilled with recycled aggregate concrete hollow slat walls were conducted to investigate the seismic behavior of each specimen. Combined with the feasibility verification of finite element simulation, the effects of wall opening on the failure mode, ductility, bearing strength and stiffness of speci...
Accelerated carbonation treatment was proposed as an environmentally friendly and promising method to strengthen the old mortar attached to the surface of recycled aggregate (RA), thereby improving the properties of recycled aggregate concrete (RAC). However, the steel corrosion and corrosion-induced cracking in concrete with the carbonated RA (CRA...
The mechanical and durability properties of nine groups of concrete，with various recycled coarse aggregate (RCA)replacement rates and water-to-cement ratios，were examined. Based on the experimental results and analysis，the length，volume and generalized interface parameters were determined；the correlation between three interface parameters and the R...
Although recycled aggregate concrete (RAC) has been extensively studied, several critical problems with its fundamental behaviors still urgently need to be figured out. Therefore, this series of two reviews re-thinks fundamental behaviors of RAC based on the latest literature. In the last review (part I), the mechanical and deformation behaviors of...
Microbial induced carbonate precipitation (MICP) is a novel and environmentally-friendly method to improve the properties of recycled aggregate. This study focused on the optimization of MICP treatment process, mainly including the modification duration, the addition method of calcium source and the number of modification cycles, to improve the qua...
The mechanical and durability properties of recycled aggregate concrete (RAC) are generally inferior to conventional concrete due to the old mortar attached to the surface of original aggregate, which induces more complicated interfacial transition zones (ITZs) in the RAC. The microbial induced carbonate precipitation (MICP) modification is a novel...
Three beams subjected to long-term loading and chloride attacks, with various recycled coarse aggregate (RCA) replacement ratios of 0%, 50% and 100% respectively, were designed to investigate the effects of the RCA replacement ratio on the flexural behavior and durability properties. The results show that a higher RCA replacement ratio has a notabl...
