?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Development+of+calcium+sulfoaluminate+cement+composites+for+nuclear+waste+encapsulation&rft.creator=McCague%2C+C&rft.creator=Zhou%2C+Q&rft.creator=Basheer%2C+PAM&rft.creator=Bai%2C+Y&rft.description=In+the+UK%2C+nuclear+wastes+are+usually+%E2%80%98cemented%E2%80%99+before+disposal+so+that+harmful%0D%0Aradionuclides+can+be+physically+and+chemically+contained.+In+this+process%2C+conventional+Portland%0D%0Acement+is+blended+with+high+levels+of+relatively+inert+mineral+additions%2C+mostly+to+reduce+the+high%0D%0Aheat+evolution+in+large+pours.+Calcium+sulfoaluminate+cement+(CSAC)+has+recently+attracted%0D%0Ainterest+in+various+applications+due+to+its+lower+pH+and+ability+to+bind+significant+quantities+of%0D%0Awater+compared+with+conventional+Portland+cement.+Such+qualities+are+particularly+suited+to+the%0D%0Aencapsulation+of+legacy+wastes+such+as+aluminium+and+uranium%2C+which+would+otherwise+corrode%0D%0Aif+embedded+within+a+Portland+cement+environment.+While+some+early+trials+have+demonstrated+%0D%0A111%0D%0Agood+potential+of+CSAC%2C+the+rapid+reaction+rate+(and+associated+heat+generation)+is+still+restricting%0D%0Aits+use.+In+this+paper%2C+common+mineral+additions+such+as+ground+granulated+blastfurnace+slag%0D%0A(GGBS)%2C+pulverised+fuel+ash+(PFA)+and+limestone+powder+(LSP)+were+incorporated+at+very+high%0D%0Areplacement+levels+(up+to+75%25)+in+an+attempt+to+dilute+the+cement+matrix+and+hence+reduce+the+heat%0D%0Aof+hydration.+Studies+of+compressive+strength%2C+heat+of+hydration+and+aluminium+corrosion+revealed%0D%0Athat+these+CSAC+composites+demonstrate+excellent+potential+for+aluminium+waste+encapsulation.%0D%0AKeywords%3A+Calcium+sulfoaluminate+cement%2C+composites%2C+nuclear+waste+encapsulation%2C+corrosion%2C%0D%0Aaluminium&rft.date=2016-09-21&rft.type=Proceedings+paper&rft.publisher=International+Workshop+on+Innovation+in+Low-carbon+Cement+%26+Concrete+Technology&rft.language=eng&rft.source=+++++In%3A++International+Workshop+on+Innovation+in+Low-carbon+Cement+%26+Concrete+Technology+-+2016.++(pp.+pp.+110-114).+++(2016)+++++&rft.format=text&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F1523319%2F1%2FBai_Colum%2520McCague.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F1523319%2F&rft.rights=open