DOI: 10.1016/J.CONBUILDMAT.2019.07.258 Corpus ID: 200077813; Study on the drying shrinkage of alkali-activated coal gangue-slag mortar and its mechanisms @article{Hongqiang2019StudyOT, title={Study on the drying shrinkage of alkali-activated coal gangue-slag mortar and its mechanisms}, author={Ma Hongqiang and Chen Hongyu and Zhu …
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Characterization studies on coal gangue for sustainable ... The SSA of coal gangue was observed to be 80 m 2 /kg and 140 m 2 /kg for 4.75 mm passing and 0.425 mm passing fractions, respectively. The SSA values observed for coal gangue can be considered as marginal compared to clayey soils. However, the SSA is . Capacity
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Key words cemented coal gangue backfill；static stability；ultrasonic pulse velocity；static segregation ： ：
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hongyu gangue grinder. hongyu gangue grinder, ultra wet grinder models and prices; stone crusher unit mechinary; kegunaan fungsi ball mill; sbm ball mill trunnion bearing india;whats the price of disc grinders; clay & coal gangue; crusher for rock salt; crusher products grinding application what is the application of coal gangue crusher .hongyu gangue grinder …
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Strength and creep characteristics of cemented gangue backfill in acid environment GUO Yuxia 1,2,RAN Hongyu 1,2,FENG Guorui 1,2,WANG Peng 1,2,WANG Zehua 1,2
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DOI: 10.1016/J.IJMST.2021.01.008 Corpus ID: 233916538; Creep properties and resistivity-ultrasonic-AE responses of cemented gangue backfill column under high-stress area @article{Hongyu2021CreepPA, title={Creep properties and resistivity-ultrasonic-AE responses of cemented gangue backfill column under high-stress area}, author={Ran Hongyu and Yuxia …
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Gangue is the solid waste discharged from coal mining and washing process. Mining industry has been significantly improved in the last decades, at the same time, large amounts of gangue have been accumulated (Bian et al., 2009).In addition to main chemical composition of Al 2 O 3 and SiO 2, gangue has various quantities of Na 2 O, K 2 O, MgO, P 2 …
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The preparation process of the cemented gangue backfill column (CGBC) sample is shown in Fig. 2.The fresh cemented gangue backfill material mixture was poured into the molds with a dimension of 100 × 100 × 300 mm 3 where two galvanized wire mesh probes at a distance of 260 mm were pre-placed,, .To reduce the impact of the electrode mesh on the mechanical …
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A step-by-step load was utilized to mimic the load history of the backfill column in the in-situ curing process. The inner damage of the specimen during curing and uniaxial compressive testing was monitored by electrical resistivity and ultrasonic equipment. Results show that: 1) Uniaxial compressive strength (UCS) and elastic modulus (EM) of the samples curing under pressure …
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Cemented gangue backfill mining technology is an important part of the "green mining" system for coal mining; it not only controls the movement of the overlying strata and the surface
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