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Market Potential Assessment of Gypsum Industry
Published in Manjit Singh, Gypsum & Gypsum Products, 2023
Calcined gypsum/gypsum plaster particularly β-plaster can be produced from the beneficiated phosphogypsum. The following building materials may be produced from the calcined gypsum: Building plastersGypsum plaster boardsPartition BlocksAcoustic TilesGypsum ConcreteGypsum marble
Numerical solution of TIM-PCM solar thermal storage system with ESP-r
Published in J. Carmeliet, H. Hens, G. Vermeir, Research in Building Physics, 2020
The utilization of PCMs in active and passive solar buildings has been a subject of considerable interest since their first reported application in the 1940s (Lane 1983). In building passive systems, pure organic or inorganic PCMs can be impregnated in traditional construction materials, such as gypsum, concrete or ceramic. Thermal performances of different types of organic or inorganic chemical compounds were analysed in the past (Abhat 1983, Hawes et al. 1993, Romanowska & Jablonski 1995). The results show that organic materials, such as paraffins or fatty acids, are usually thermally more stable and easier to encapsulate than inorganic ones, such as salt hydrates.
Thermal Energy Storage in Phase Change Materials and Its Applications
Published in Amritanshu Shukla, Atul Sharma, Pascal Henry Biwolé, Latent Heat-Based Thermal Energy Storage Systems, 2020
Manoj K. Singh, L. Syam Sundar, M. B. Pereira, Antonio C. M. Sousa
The floor of the building is also an important part for heating and cooling of buildings. Athienities and Chen48 investigated the transient heat transfer in floor heating systems by considering the influence of the cover layer and incident solar radiation on floor temperature distribution and on energy consumption. Complete and partial (area) carpets were considered as well as hardwood cover layers over concrete or gypcrete (gypsum–concrete mixture) thermal storage.
Investigation of the interaction between concrete-gypsum interface and internal notch using experimental test and numerical simulation
Published in Mechanics Based Design of Structures and Machines, 2023
Alireza Bagher Shemirani, Hadi Haeri, Vahab Sarfarazi, Pouyan Ebneabbasi, Mohammad Fatehi Marji
By selecting the micro parameters listed in Table 6, the glue properties were calibrated for numerical simulation. Figure 10 shows failure pattern in experimental and numerical simulation when interface angularity was 0°. The red line is representative of tensile crack. As can be shown, the tensile fracture occurs in gypsum–concrete interface. It is to be note that, in this condition, there is not any open joint at the experimental specimen and the numerical model.
Experimental Study on Seismic Behavior of Lightweight Concrete-Filled Cold-Formed Steel Shear Walls Strengthened Using Horizontal Reinforcement
Published in Journal of Earthquake Engineering, 2023
Zhifeng Xu, Zhongfan Chen, Xitong Dong, Yining Zuo
With the rapid development of lightweight concrete technology, lightweight concrete (lightweight mortar, gypsum concrete, foamed concrete, etc.) has been widely used in the building surface to improve the thermal insulation performance, and is gradually utilized as a structural material in the load-bearing wall (Chen, Wu, and Liu 2012). An experimental study on the seismic behavior of the CFS shear wall with lightweight mortar was performed by Liu et al. (2016). The result indicated that using lightweight mortar sprayed on the wall surface can increase the stiffness and shear strength of the CFS shear walls, but has little effect on changing the early distortional buckling failure of the studs. This early failure can decrease the wall’s deformation and energy-dissipating capacity, and thus must be avoided, especially for the walls under a higher axial compression ratio. Wu et al. (2018) proposed a CFS framing wall with infilled low-strength gypsum concrete, and performed the experimental study on its shear behavior. The restriction effect of gypsum concrete on the steel frame prevents the studs from the local section distortional buckling and the sudden overall buckling failure, improving the wall’s shear capacity. Besides, Xu et al. (2018c) and Zuo et al. (2021) developed high-strength foamed concrete (HFC) with strength grade of FC03 (Corresponding compressive strength of 3.26 MPa, the reference of Standard JGJ/T 341 (2014)), and investigated the effect of HFC as filling material on the seismic behavior of CFS shear walls. The results showed that HFC improved the shear capacity, stiffness, ductility, and energy absorption of the CFS walls to a different extent, and confirmed better thermal property of the walls by a heat-conduction coefficient test (Xu et al. 2018c). Thus, recent advances of related research on the seismic behavior of CFS shear wall infilled with lightweight concrete are greatly promising for mid-rise buildings. However, previous researches are concentrated on the CFS shear walls infilled with lightweight concrete with compressive strength ranged from 1.0 to 3.0 MPa. Hence, the enhancement effect of this low-strength lightweight concrete on the seismic performance of walls is limited. For added safety, it is necessary to investigate the shear behavior of CFS shear wall filled with high-strength lightweight concrete, especially the compressive strength of 7.0–10.0 MPa and density grade of 600–900 kg/m3.