Microscopic experiment of consolidating tailings by Linglong cementitious material

InordertoinvestigatetheinfluenceofLinglongcementitiousmaterialontheconsolidationof tailingsunderdifferentconditions,aseriesofbackfillblocksatdifferentratios,differentdensitiesand differentcuringagesaredesignedwithordinaryPortlandcementcontrolandtheiruniaxialcompressive strengthismeasuredthroughstrengthtest.Thenthephasecompositionandthemicro-morphologyofthe tailingsbackfillarediscussedbysuchmeasuringandtestingtechniquesasXRDandSEM.Theresults showthatthehydrationreactionofthecementitiousmaterialproducesettringiteandC—S—Hgel,and promotestheconsolidationofthetailingsbackfill;theageandtheratioofcementitiousmaterialtotailingswillaffectthedevelopmentofthecontentandmorphologyofettringiteandC—S—Hgelinthehydrationproducts,andthecontentofhydrationproductswillincreasewiththeincreaseofageandthera
tioofcementitiousmaterialtotailings.Thecontent of the productsincreasesand overlapsto form a densenetworkstructure,whichismacroscopicallyexpressedasanincreaseinstrength;themassconcentrationaffectstheporesinthetestblock,therebyaffectingthestrength.