Compressive Strength and Durability of Coal Gangue Aggregate Concrete MA Hongqiang 1 YI Cheng 1 ZHU Hongguang 1 DONG Zuochao 2 CHEN Hongyu 1 WANG Jiaxin 1 LI Deyi 1 1 School of Mechanics and Civil Engineering China University of Mining and Technology Beijing Beijing 100083; 2 School of Architecture and Civil Engineering
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— Due to the high content of SiO2 in coal gangue approximately 40 70 wt% silica is often extracted from coal gangue and aerogel is then prepared by other present silica aerogel 50
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A technology of mole gangue and thermal insulation board which is applied in the field of foamed mole gangue insulation board can solve the problems of easy fire poor flame retardancy and use environment restrictions and achieve the effects of low cost less pollution and easy to obtain materials
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# Thermal insulation board # "Z" board is made of perlite gangue and fine powder After grinding prilling sieving press into mould Heating by 1200°one time sintering swelling into lump
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— In this paper fly ash and coal gangue as the main raw materials potassium feldspar albite as the composite flux phosphogypsum as the bonding agent the semi melting method was used to prepare fly ash
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— 1 Introduction Coal gangue a waste produced during coal mining has been regarded as the largest source of industrial waste in China It is estimated that the production of 1 t coal generates t coal gangue [1] and the total stockpile of coal gangue exceeds 6 billion tons in China [2] [3] The coal gangue not only occupies
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— FG is a porous material with uniform micropores and connected pores so its thermal conductivity is lower than that of traditional geopolymers Phavongkham et al 2020 It is well known that closed holes have a better effect on the thermal insulation ability of FG than connected holes Łach et al 2016 emphasizing the importance of optimizing
— The tensile strength and modulus of the two fibers change with the temperature rising are shown in Fig can be seen from Fig 1 that the tensile strength of CFMPF and CFMF exhibited that first rise and then reduce trend at the whole temperature range from room temperature to 600 °C At room temperature their values are 903 MPa
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— Newly Generated Ca Feldspar during Sintering Processes Enhances the Mechanical Strength of Coal Gangue Based Insulation Bricks Materials IF Pub Date 2023 11 16 DOI /ma16227193
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— Silica aerogel materials are well recognized for their superinsulation performance and are regarded as one of the hot candidates to revolutionize building insulation To date high production cost related to exorbitant precursors as well as cumbrous multi
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