Author
Zhou Hang
Bio: Zhou Hang is an academic researcher from Xi'an University of Architecture and Technology. The author has contributed to research in topics: Fire protection & Concrete recycling. The author has an hindex of 1, co-authored 2 publications receiving 9 citations.
Topics: Fire protection, Concrete recycling
Papers
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TL;DR: A comprehensive review of the scientific and technical achievements of microwave-assisted concrete treatment can be found in this article, where the theoretical fundamentals for the microwave assisted concrete heating process are investigated in detail, covering areas such as the microwave heating characteristics, governing equations, dielectric properties and multi-field coupling effects.
35 citations
TL;DR: In this article, a thermo-mechanical coupling model is derived to study the temperature and stresses of tunnel liners under the RABT fire curve, where the heat transfer coefficient (HTC) of the heated surface of tunnel liner is considered in the proposed model.
3 citations
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TL;DR: In this article , the intrinsic effect of microwave pre-curing on the hydration kinetics and microstructure development of UHPFRCs is investigated. And the observed experimental results show that the microwave treatment can create a dense shell around the cured UHPC's periphery, which can resist the lateral deformation of the specimen and guarantee the excellent mechanical properties of the treated sample.
Abstract: This research aims to clarify the intrinsic effect of microwave pre-curing on the hydration kinetics and microstructure development of Ultra-High Performance Concrete (UHPC). Six hours after casting, the UHPC samples are subjected to microwave pre-curing for 60–240 s. Then, the macro and micro characteristics of the cured UHPC are evaluated. The observed experimental results show that the microwave treatment can create a dense shell around the cured UHPC's periphery, which can resist the lateral deformation of the specimen and guarantee the excellent mechanical properties of the treated sample. Moreover, when steel fibres are included into UHPC, the reflection and shielding effect of the 3D fibres network can significantly block the promotion effect of microwave on the strength development of UHPFRC. Additionally, due to the high energy of microwave, high polymerization hydration products and advanced pore structure (micro and meso scales) can be observed in the pre-cured UHPC.
25 citations
TL;DR: In this paper , a comprehensive study of the different effects of different curing methods on the strength development of normal concrete and UHPC is presented. But, it is not practical to specify the peak curing regimes for concrete or UHC since the best results need critical monitoring of curing parameters.
25 citations
TL;DR: In this article , the most commonly used curing regimes for AAMs are conducted in thermal or ambient temperature environments, adopted in the form of immersion of the AAM in water, ambient and high humidity, sealing, oven and, more recently, microwave curing.
23 citations
TL;DR: In this paper, the authors investigated the heating process of aggregate-mortar interfaces under microwave irradiation and provided a contribution and reference for the further application of microwave-assisted aggregates recycling.
14 citations
TL;DR: In this paper , a review of the latest knowledge on the recycling techniques for different GFRP and CFRP composites is presented, and the high value applications of the composites remanufactured through recycled fibers are outlined.
Abstract: ABSTRACT There is an urgent need to recycle glass fiber-reinforced polymer (GFRP) and carbon fiber-reinforced polymer (CFRP) composites due to environmental challenges caused by incineration and traditional landfilling. This review incorporates an overview of the latest knowledge on the recycling techniques for different GFRP and CFRP composites. The applications of these chopped fibers are limited due to significant depreciation in their mechanical properties after recycling. The high-value applications of the composites remanufactured through recycled fibers are outlined. This review also incorporates the present challenges and modern trends in the recycling of fiber-reinforced composites. It is expected that further innovations in recycling technologies will be helpful to establish a circular economy and sustainable benign environment. Graphical abstract
14 citations