?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Application+of+Raman+spectroscopy+for+tracing+the+status+of+silica+fume+in+cementitious+materials&rft.creator=Yue%2C+Y&rft.creator=Bai%2C+Y&rft.creator=Wang%2C+JJ&rft.description=Silica+fume+(SF)+is+an+important+component+for+manufacturing+high+performance+concrete+(HPC)%2C+owing+to+its+superb+pozzolanic+reactivity+and+physical+filling+effects.+However%2C+application+of+SF+in+concrete+may+cause+potential+hazards+issues.+Although+using+SF+in+slurry+form+can+somehow+reduce+the+potential+biotoxicity%2C+the+long-term+stability+and+status+of+the+SF+particles+within+cementitious+materials+is+still+uncertain.+In+the+current+study%2C+attempts+were+made+to+use+Raman+spectroscopy+as+an+innovative+alternative+technique+for+tracing+and+identifying+the+status+of+SF+both+in+its+original+SF+slurry+and+in+a+6-month-old+hydrated+cement+paste.+Light-optical+microscope+was+also+used+to+examine+the+morphology+of+the+SF+particles+in+the+aforementioned+samples.+The+results+showed+that+under+Raman+spectroscopy%2C+the+various+components+of+the+SF+in+slurry%2C+such+as+amorphous+silica%2C+silicon+crystal%2C+and+carbon%2C+were+clearly+recognised.+In+addition%2C+the+SF+agglomerates+formed+in+the+slurry+were+also+detected.+On+the+other+hand%2C+the+chemical+composition%2C+status%2C+and+morphology+of+both+SF+and+SF+agglomerates+in+the+6-month-old+paste+were+also+identified.+The+study+reported+in+this+paper+indicates+that+Raman+spectroscopy+could+be+a+potential+technique+for+tracing+the+status+of+SF%2C+so+that+the+potential+safety+hazards+of+SF+can+be+monitored.&rft.publisher=Shenzhen+University%2C+Shenzhen%2C+Guangdong+Province%2C&rft.date=2016-06-30&rft.type=Proceedings+paper&rft.publisher=5th+International+Conference+on+the+Durability+of+Concrete+Structures&rft.language=eng&rft.source=+++++In%3A++Proceedings+of+5th+International+Conference+on+the+Durability+of+Concrete+Structures+-+2016.++(pp.+pp.+174-178).++Shenzhen+University%2C+Shenzhen%2C+Guangdong+Province%2C%3A+China.+(2016)+++++&rft.format=text&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F1523326%2F1%2FBai_ICDCS%25202016_Yun%2520Bai%2520UCL_REF.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F1523326%2F&rft.rights=open