Zhengfan Lyu^1,3, Yulin Li^2,3, Mengmeng Fan^1,3,*, Yan Huang¹, Chenguang Li²

FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.5, pp. 901-913, 2024, DOI:10.32604/fdmp.2023.043512

Abstract Red mud (RM) is a low-activity industrial solid waste, and its utilization as a resource is currently a hot topic. In this study, the micro characteristics of red mud at different calcination temperatures were analyzed using X-ray diffraction and scanning electron microscopy. The performance of calcined red mud was determined through mortar strength tests. Results indicate that high-temperature calcination can change the mineral composition and microstructure of red mud, and increase the surface roughness and specific surface area. At the optimal temperature of 700°C, the addition of calcined red mud still leads to a decrease More > Graphic Abstract

MUHAMAD SOFFI BIN MANDA^1,2, MOHD RUZAIMI BIN MAT REJAB¹, SHUKUR ABU HASSAN^3,4, MAT UZIR BIN WAHIT^3,4, JOSEPH SELVI BINOJ^5,*, BRIGHT BRAILSON MANSINGH⁶, SITI SAFARAH BINTI AMIRNUDDIN³, ALAMRY ALI⁷, KHENG LIM GOH^8,9, DIDIK NURHADIYANTO¹⁰

Journal of Polymer Materials, Vol.39, No.3-4, pp. 241-253, 2022, DOI:10.32381/JPM.2022.39.3-4.5

Abstract This study investigates the potential of Tin Slag Polymer Concrete (TSPC) strengthening through confinement using basalt fiber reinforced polymer (BFRP) and aramid fiber reinforced polymer (AFRP) confinement. TSPC short cylindrical column samples have been wrapped with BFRP and AFRP in a single layer (30 mm overlap) using Sikadur-330 epoxy and final samples were coded as TSPC-UC, TSPC-BF and TSPC-AF for unconfined, BFRP and AFRP for confined respectively. After curing for 30 days at room temperature, compressive test has been performed to know the strength, modulus, strain, fracture energy and failure modes of unconfined and confined… More >

Jianlong Jin, Jingjing Ding, Long Xiong, Ming Bao, Peng Zeng^*

FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.4, pp. 803-814, 2024, DOI:10.32604/fdmp.2023.027311

Abstract The effects of different contents of a MgO expansive agent and phosphorus slag on the mechanical properties, shrinkage behavior, and the heat of hydration of concrete were studied. The slump flow, setting time, dry shrinkage, and hydration heat were used as sensitive parameters to assess the response of the considered specimens. As shown by the results, in general, with an increase in the phosphorus slag content, the hydration heat of concrete decreases for all ages, but the early strength displays a downward trend and the dry shrinkage rate increases. The 90-d strength and dry shrinkage More > Graphic Abstract

Guangyan Fan, Fuyong Su^*, Cunwang Li, Bin Li

Frontiers in Heat and Mass Transfer, Vol.21, pp. 281-292, 2023, DOI:10.32604/fhmt.2023.043221

Abstract To investigate the flow and heat transfer process of blast furnace slag through the slag trench after the slag is discharged, a three-dimensional physical model is established and simulated according to the actual size of the slag trench and the physical properties of the high-temperature slag. The temperature fied and flow field distribution of the high-temperature slag liquid inside the slag trench is obtained by numerical simulation under different working conditions, and the effects of operating conditions such as slag trench inclination, high-temperature slag inlet flow rate, and inlet temperature are investigated. The results show… More >

Ying Ji^*, Xi Liu^*

Journal of Renewable Materials, Vol.11, No.11, pp. 3977-3989, 2023, DOI:10.32604/jrm.2023.028439

Abstract The problem of low disposal and utilization rate of bulk industrial solid waste needs to be solved. In this paper, a high-activity admixture composed of steel slag-phosphate slag-limestone powder was proposed for most of the solid waste with low activity and a negative impact on concrete workability, combining the characteristics of each solid waste. The paper demonstrates the feasibility and explains the principle of the composite system in terms of water requirement of standard consistency, setting time, workability, and mechanical properties, combined with the composition of the phases, hydration temperature, and microscopic morphology. The results… More > Graphic Abstract

Yu Bai, Lei Wang, Ying Fang^*

Journal of Renewable Materials, Vol.11, No.7, pp. 3129-3141, 2023, DOI:10.32604/jrm.2023.026923

Abstract Energy shortage and the emission of greenhouse gases have become a global problem of urgent concern. Therefore, there is an urgent need to develop a low carbon building material. Geopolymers have become a hot topic due to their environmental sustainability and the feasibility of immobilizing industrial waste. In this paper, steel slag (SS) fines were investigated as auxiliary materials of blast furnace slag (BFS) based geopolymer. The hydration heat properties, flowability, compressive strength, sorptivity coefficient, X-ray diffraction (XRD), and scanning electron microscopy (SEM) of the geopolymer pastes were determined. The results showed that the incorporation More >

Fuyong Su^a,* , Guozhi Zhang^b, Guojun Chen^c

Frontiers in Heat and Mass Transfer, Vol.15, pp. 1-5, 2020, DOI:10.5098/hmt.15.4

Abstract The iron and steel industry produces a large number of low-grade waste heat resources, which are not fully utilized. In addition, the iron and steel industry consumes a lot of water. This paper presents a method of utilizing waste heat of blast furnace slag flushing water for seawater desalination. After the flash process, heat exchange process and heat repair process, the blast furnace slag water was converted into steam which is 70 °C, which provided a heat source for MED (Multi-effect Desalination). This utilization method of waste heat was verified by thermodynamics and production data. More >

Wei Zhang¹, Mulian Zheng^1,*, Yifeng Li², Wuxi Zheng³

Journal of Renewable Materials, Vol.11, No.5, pp. 2513-2529, 2023, DOI:10.32604/jrm.2023.025275

Abstract Steel slag is characterized by high strength, good wear resistance and micro-expansion. This study aims at exploring the potential of steel slag in cement stabilized aggregates, mainly including mechanical properties, shrinkage and compensation mechanisms. For this purpose, the compressive strength and compressive resilient modulus of cement stabilized aggregates with different steel slag contents (CSMS) were initially investigated. Subsequently, the effects of steel slag and cement on dry shrinkage, temperature shrinkage, and total shrinkage were analyzed through a series of shrinkage test designs. Additionally, in combination with X-ray diffraction (XRD) and Scanning electron microscope (SEM), the… More >

Yafei Hu^1,2, Keqing Li^1,2, Lujing Zheng³, Bin Han^1,2,*

Journal of Renewable Materials, Vol.11, No.5, pp. 2491-2511, 2023, DOI:10.32604/jrm.2023.025129

Abstract Tailings known as solid waste are generated by the mining industry. The development of tailings as wet shotcrete aggregates has significant economic and environmental benefits. The fine particle size of the tailings results in a large consumption of traditional cement as a cementitious material and insignificant improvement in strength. Therefore, a composite cementitious system of cement and solid waste resources (fly ash and slag powder) is explored for this study. In this paper, the response surface methodology (RSM) is used to optimize the experimental design and a multivariate nonlinear response model with cement, fly ash… More >

Bo Shi¹, Dandan Zhu^2,*, Pengxiang Lei³, Ximin Li⁴, Hengbo Xiao⁴, Lihua Qian^4,*

Journal of Renewable Materials, Vol.11, No.4, pp. 1951-1961, 2023, DOI:10.32604/jrm.2023.025271

Abstract High purity ammonium metavanadate (NH₄VO₃) is the most vital chemical to produce V₂O₅, VO₂, VN alloy, VFe alloy and VOSO₄, which have some prospective applications for high strength steel, smart window, infrared detector and imaging, large scale energy storage system. NH₄VO₃ is usually produced by spontaneous crystallization from the aqueous solution due to its sharp dependence of solubility on the temperature. However, hazardous chemicals in industrial effluent, include phosphorate, silicate and arsenate, causing severe damage to the environment. In this work, these impurities are selectively precipitated onto inorganic flocculants, while the vanadate dissolved in an aqueous solution keeps More > Graphic Abstract