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Zhenhua Duan, Nv Han, Amardeep Singh, Jianzhuang Xiao^*
Journal of Renewable Materials, Vol.8, No.11, pp. 1375-1390, 2020, DOI:10.32604/jrm.2020.013044
Abstract Recycled aggregates (RA) are frequently obtained from various unknown sources, which caused variation in properties among recycled aggre- gates concrete (RAC). This paper investigated the macro and microscopic proper- ties of RAC prepared with RAs originated from different parent concretes with 90-day strength ranging from 30 MPa to 100 MPa. These parent concretes were prepared in advance and crushed to produce RA of distinct qualities. The attached mortar content can reach up to 69% in the concrete with highest strength grade. The microscopic investigation on different RAC was conducted with the X-ray Micro-Computed Tomography scanning technique and image process. Experi-… More >

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Dingbang Zhang¹, Yi Zhang^2,*, Zhiguo Cao³, Tao Cheng¹
Journal of Renewable Materials, Vol.8, No.11, pp. 1391-1409, 2020, DOI:10.32604/jrm.2020.012695
Abstract In this paper, roots and copper slag were used to overcome the weak- ness and reinforce the mechanical property of soft soil. The experiments were designed by the Response Surface Method (RSM), the content optimizing of the root permeated copper slag mixed soil for achieving appropriate values of shear strength and the final results evaluating were also conducted by RSM. Four independent variables including moisture content (12–21% by dry weight of the mixture), slag content (10–20% by dry weight of the mixture), roots content (0–1.1% by dry weight of the mixture), and aspect ratio of roots L/d (5–40) were studied… More >

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Tao Li^1,2, Ali Abd El-Aty^1,2,4, Cheng Cheng^1,2, Yizhou Shen^1,2, Cong Wu^1,2, Qiucheng Yang^1,2, Shenghan Hu^1,2, Yong Xu³, Jie Tao^1,2,*, Xunzhong Guo^1,2,*
Journal of Renewable Materials, Vol.8, No.11, pp. 1411-1427, 2020, DOI:10.32604/jrm.2020.012939
Abstract In this investigation, a new silicone rubber-based MRE material was prepared to be used as a forming medium in manufacturing thin-walled complex- shaped Ni-based tubes through the bulging process. Thus, it is significant to investigate the effect of magnetic field intensity, magnetic field loading time, and angle on the mechanical properties of the prepared MRE material during the curing process. The obtained results showed that increasing the magnetic field intensity during the curing process can improve the orientation of the chain structure in the elastomer matrix effectively. However, its mechanical properties are the best under the corresponding magnetic field intensity… More >

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Bengang Zhang^1,2,#, Xuedong Xi^3,#, Zhigang Wu^1,*, Hong Lei^2,*, Lifen Li¹, Meifen Tian¹
Journal of Renewable Materials, Vol.8, No.11, pp. 1429-1441, 2020, DOI:10.32604/jrm.2020.011985
（This article belongs to this Special Issue: Renewable and Biosourced Adhesives)
Abstract According to the preparation method commonly used for soy proteinbased adhesives, alfalfa leaf protein was used as the raw material to prepare alfalfa leaf protein-based wood adhesive. Differential scanning calorimetry analyzer (DSC), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) were used to characterize properties of the alfalfa leaf protein-based adhesive in this paper. The results revealed the following: (1) Chemical compositions and chemical structures of the alfalfa leaf protein were basically identical with those of the soy protein, both belonging to spherical proteins with the basis and potential for protein adhesives preparation, and spatial cross-linked network structures would… More >

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Xiaofei Cao¹, Shuo Zhao¹, ShuJun Yan², Jun Hu^1,*, Yong Dan^1,*
Journal of Renewable Materials, Vol.8, No.11, pp. 1443-1472, 2020, DOI:10.32604/jrm.2020.012113
（This article belongs to this Special Issue: Green Coating and Film for Degeneration Protection)
Abstract CeO₂, as a significant functional material, Has a widespread application in many fields due to its excellent properties. In this review, we sum up a serious of methods to prepare and differentiate nanostructured cerium oxide with various morphologies based on dimensionality and its main applications in industry. We mainly summary the different strategies to synthetic the CeO₂ with 0-D, 1-D, 2-D and 3-D and the key parameters which may affect the nanostructures. We hope that this review helps researchers master can look up CeO₂ related knowledge more quickly upon the synthetic methods and comparing various morphologies or fabricating ways to… More >

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Yuan Zhang¹, Ping Li¹, Yiqiang Wu^1,2, Guangming Yuan^1,2, Xianjun Li^1,2, Yingfeng Zuo^1,2,*
Journal of Renewable Materials, Vol.8, No.11, pp. 1473-1488, 2020, DOI:10.32604/jrm.2020.011788
（This article belongs to this Special Issue: Renewable building materials and properties)
Abstract The Chinese fir wood was impregnated using a cyclic increasingpressure method (CIPM) with phenolic prepolymers as the impregnating modifier. Unmodified Chinese fir and progressive increasing-pressure method (PIPM) impregnated Chinese fir were used as reference samples and were compared and analyzed. The product’s chemical structure, internal morphology, crystal structure, and heat resistance were characterized. The transversal and longitudinal sections showed better filling effects, so that it bore greater external loading and reduced the water storage space. CIPM infused more phenolic prepolymer into the Chinese fir. Not only producing more physical filling but also forming more hydrogen bond associations and chemical bond… More >

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Raimundo N. Lima Júnior¹, João L. I. O. Almeida¹, Jones de Andrade², Flávia O. M. S. Abreu^1,*
Journal of Renewable Materials, Vol.8, No.11, pp. 1489-1504, 2020, DOI:10.32604/jrm.2020.011629
（This article belongs to this Special Issue: 15th Brazilian Polymer Conference (15th CBPol))
Abstract Biocoagulants emerges as a promising technology in water treatment, in order to exploit renewable and biodegradable materials. The present work aims to study the coagulant action of chitosan and carboxymethylchitosan on water with very high turbidity (above 300 NTU), contrasting the physicochemical results with those obtained for aluminum sulphate. Carboxymethylchitosan was produced by the Williamson’s ethers synthesis and characterized by potentiometric titration, FTIR and ¹ H-NMR. The coagulant tests were performed using synthetic water in a Jar-test equipment, through the induction of high and low velocity gradients, followed by sedimentation. The results showed turbidity and color removal efficiencies above 99%… More >

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Ling Wang^1,2, Shenglong Jiang², Chenchen Huang², Pengyuan Dai², Fenghua Liu^2,*, Xiaopeng Qi¹, Gaojie Xu²
Journal of Renewable Materials, Vol.8, No.11, pp. 1505-1518, 2020, DOI:10.32604/jrm.2020.010544
（This article belongs to this Special Issue: Current Advances in Green Nanomaterials Applications)
Abstract The paper discusses the mechanical and thermal performance manifested in natural nanorods attapulgite (ATP) reinforced Acrylonitrile butadiene styrene (ABS) nanocomposites in the process of fused deposition modeling (FDM). Molten extrusion technique was taken to manufacture the filaments of ABS/organic-attapulgite (OAT) nanocomposites with different mass fraction and the printing operation was made by one commercial FDM three-dimensional (3D) printer. Results indicate that the mechanical performance of these FDM 3D printed specimens are improved obviously via the introduction of OAT, and tensile strength of the ABS/OAT nanocomposites parts with only 2 wt% OAT addition is enhanced by 48.1%. At the same time,… More >

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Feiyu Li¹, Siqi Zuo¹, Yongzhou Chi¹, Chunying Du¹, Zhaopeng Shen¹, Xihong Han^2,3, Xiaohui Wang^2,*, Peng Wang^1,*
Journal of Renewable Materials, Vol.8, No.11, pp. 1519-1529, 2020, DOI:10.32604/jrm.2020.011453
（This article belongs to this Special Issue: Renewable materials for sustainable development)
Abstract Drought is one of the major abiotic stresses that affect plant growth and reduce agricultural productivity. Use of algal extract as a biostimulant is gaining increased attention from researchers. This study aimed to investigate the potential of Ulva prolifera extract (UE) as a biostimulant when enzymatically extracted under conditions of water deficit. UE treatments (0.02%, 0.06%, and 0.1%) significantly improved the shoot length, root length, and dry weight of roots after 120 h of drought stress relative to that in treatment with the negative control. An increase in catalase (CAT) and peroxidase (POD) activity was also observed that resulted in… More >

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Yanrong Zhao^1,2,3,#, Ping Chen^1,4,*,#, Shifeng Wang⁵, Yaxiong Ji^3,4, Yuanhao Wang^3,4,*, Bolin Wu^1,2, Rongjin Liu¹
Journal of Renewable Materials, Vol.8, No.11, pp. 1531-1541, 2020, DOI:10.32604/jrm.2020.011462
Abstract Bayer red mud (BRM) is a kind of industrial solid waste characterized by huge volume and high alkalinity. Its disposal generates serious environmental pollution and occupies a large number of farmland. The utilization and recycling of BRM is currently a crucial issue and needs to be addressed as soon as possible. The chemical composition of BRM is similar to cement clinker. In this study, the feasibility of preparing Belite-ferroaluminate clinker (BFAC) with different BRM was explored. The physical properties, mechanics performance, radioactivity levels and trace harmful metals leaching were measured. XRD, BEI and EDS were used to characterize the mineral… More >

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