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Introduction
Concrete, nanomaterials
Skills and Expertise
Current institution
Publications
Publications (39)
Nano-silica (NS) as a non-conductive nanofiller was utilized to promote performance improvement of conductive seawater cementitious composite (NS-CSWCC) manufactured by ohmic heating (OH) curing at −20 °C. NS exhibited great advantage on improving the heating efficiency of OH cured sample. The peak temperature and temperature-increase rate of NS-CS...
This work presented an enhanced ohmic heating (OH) curing method to promote the ultra-high strength of conductive hybrid carbon fibers reinforced RPC (HCF-RPC). This novel curing method was conducted at normal pressure and temperature, but its curing performance was comparable to the autoclave (AC) curing that required strict equipment to provide h...
Ohmic heating (OH) curing method has been proved to cure conductive fibers enhanced cementitious composites by electric-heating conversion under ultralow temperature, and this curing effect depends greatly on the heating efficiency. This paper presents a novel idea of utilizing carbon nanofibers (CNFs) to regulate and control the heating efficiency...
Fly ash (FA) is a common solid waste in those countries which depend much on coal resources. The recycling of FA as a partial substitute for cement concrete is significant to reduce the pressure of land source and environmental protection. In this work, ohmic heating (OH) curing method was presented to cure FA/cement mortar (FA-CM) samples under se...
The fabrication of reactive powder concrete (RPC) has been largely restricted by the high cost of raw materials and the high energy-consuming curing method. In this work, dolomite powder was incorporated to fully replace silica sand as fine aggregates to minimize the material cost of RPC and realize green sustainable development in economic society...
This study presented an intelligent magnetic field-assisted approach to achieve orientation control of nickel-coated carbon fibers (NiCFs) in conductive cementitious composites (NiCFs-CCC), aiming to unlock the synergistic enhancements in electrical, thermal, and mechanical properties. Firstly, a critical magnetic intensity formula was theoreticall...
The effect of elevated temperatures and subsequent rehydration on the microscopic mechanical properties and physicochemical changes of cement pastes was investigated. Cement pastes with different grades (CEM I 42.5, CEM I 52.5) and different water-to-cement ratios (0.3, 0.4) were exposed to target temperatures of 300 °C, 600 °C, and 900 °C, followe...
This chapter will introduce the use of glass powder (GP) in high-volume glass
powder blended cement, covering aspects such as reactivity, hydration,
fresh properties, mechanical properties, microstructure, and durability.
Limestone powder is a powdery material that is made of limestone with a certain purity and ground to a specified fineness grade. Due to its abundant resources, wide distribution and convenient processing, limestone powder is a cheap and easy-to-obtain material. Limestone has a long history being utilized as a supplementary cementitious material, ma...
The development of electric resistance is a key factor affecting the performance of conductive concrete, especially the electrical–thermal performance. In this work, the effects of different influencing factors (including the water-to-binder ratio, coarse aggregate content and carbon fiber (CF) content) on the electric resistance of conductive conc...
Layered double hydroxides (LDHs) have been found to protect bitumen against UV aging that was a culprit to shorten service life of new paved roads and burden environment with toxic volatiles in case of repaving roads time and again. Utilizing LDHs to improve the UV resistance to bitumen is desirable but the corresponding mechanism is still not be c...
This paper aims to provide insights into the coupled influence of typical anti-freezing agents (AFAs) and cold environment on rheological performance of cement mortar with/without different superplasticizer (SP) and air-entraining agent (AEA) components. Fresh mixtures were prepared with chemical admixtures singly or in groups (AFA; AFA/SP; AFA/SP/...
Soundless chemical demolition as an environment-friendly demolition method has been widely researched in the field of rock and plain concrete breakage due to their brittle characteristic. However, the utilization of this method on reinforced concrete structures was limited and should be further researched to broaden its application in the building...
Soundless chemical demolition has great potential for application in the field of building demolition in densely built areas. However, the application of this method was limited due to less guidance can be applied to reinforced concrete. Thus, this study investigated the effect of longitudinal reinforcement on the crushing degree of concrete column...
The on-site fabrication of high-performance concrete (HPC) under ultra-low temperature environment is challenging the research community. This work presents a gradient power modified ohmic heating (OH) curing to stimulate the strength formation of conductive carbon fiber/carbon nanofiber reinforced high performance concrete (HCF-HPC) at ultra-low t...
In this paper, carbon fiber/carbon nanofiber strengthening nonmass concrete slab was designed, and ohmic heating (OH) curing was used to promote the strength formation of the slab under −20°C. COMSOL multiphysical field coupling program has been used to simulate the heating process of nonmass concrete slabs under different conditions. COMSOL analys...
Ohmic heating (OH) curing is presented to precure carbon fiber/cement-based composite (CF-CC) under ultra-low temperature to rapidly achieve frost-resisting critical strength. Heat curing temperature is created by ohmic heating effect on CFs conductive network designed by numerical and experimental electric percolation. Frost resistance results sho...
In this paper, ohmic heating (OH) curing was proposed as a novel curing method for on-site high-performance concrete (HPC). With this method, constant electric power was applied to the carbon fiber reinforced high-performance concrete (CF-HPC) sample to generate ohmic heating, which aided to the rapid structural strength formation. Carbon fibers (C...
The repair/reinforcement of construction structures have been a challenge due to hydration termination of cement-based materials in an ultra-low temperature environment. This work presents a Carbon Fiber (CF)/Carbon Nanofiber (CNF) synergistically strengthening cement-based composite (CM-CF/CNF) as a repair/reinforcement material, in which ohmic he...
