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Mechanical Behaviour of Lump-Grout Backfill Material for Underground S by Hongchao Zhao, Ting Ren et al

Large-size lump (e.g., coal reject or waste rocks) is one of the most popular backfill materials for underground mines attributed to its cost-effective and easy-to-obtain. The massive void between lumps, however, does generally affect the overall performance in eliminating the ground subsidence. This paper presents a conceptual backfill material, termed as lump-grout (LG) material, the attractive feature of which is that the voids between lumps are totally filled up with high-water content cementitious grout (CG) material. To explore the mechanical behaviour of LG material, a total of 36 LG specimens were prepared and tested under the uniaxial compression and the tensile loading. Other 20 CG specimens were tested in parallel for comparison. Key configurations investigated in the present research covered the particle size of lumps and the water-to-powder ratio of CG material. Test results indicated that the stress–strain behaviour of LG specimen is predominately affected by the streng

Backfill materialGrout materialArge size lumpsMechanical propertiesUnderground spaces

Transcripts for BBCNEWS Click 20211030 00:50:00

then our material biodegrade into c02 in the water and biomass. into c02 in the water and biomass- into c02 in the water and biomass. , .. , , biomass. ingredients can be put throu~h biomass. ingredients can be put through existing biomass. ingredients can be put through existing moulding - through existing moulding machines. the material would struggle with housing hazardous chemicals though and its end of life is proving problematic. it end-of-life is proving problematic.- end-of-life is proving problematic. it can be mechanically - problematic. it can be mechanically or - problematic. it can be - mechanically or chemically recycled. the problem is that the volumes are so small that it doesn t make any sense that the current plastic recycling infrastructure collect and our material out. 50 infrastructure collect and our material out. material out. so for this to really work material out. so for this to really work it material out. so for this to really work it needs - materia

End of lifeHousing hazardous chemicalsMoulding machinesThrouh biomassIt end of lifePlastic recycling infrastructureNet carbon removal technologyGrout materialMaterial out

Industrial Grout Material Market Business Opportunities, Segmentation And Forecast 2021-2027 | LATICRETE International, Five Star Products, Copps Industries

Industrial Grout Material Market Business Opportunities, Segmentation And Forecast 2021-2027 | LATICRETE International, Five Star Products, Copps Industries
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