The influence of microstructure on the dimensional stability of lightweight aggregate concrete

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dc.contributor.advisorBremner, T.
dc.contributor.advisorW., Bremner
dc.contributor.authorGoodine, Lloyd
dc.date.accessioned2023-06-07T21:16:54Z
dc.date.available2023-06-07T21:16:54Z
dc.date.issued1990
dc.description.abstractThe m i c r o s t r u c t u r e of f o u r types o f manufactured aggregates were s t u d i e d using a scanning e l e c t r o n microscope and the r e s u l t s of t h i s work were used t o p r o v i d e an i n s i g ht i n t o the d i m e n s i o n a l s t a b i l i t y of prisms made o f these aggregates. The commercial names o f t h e f o u r types of aggregates are S o l i t e , A a r d e l i t e , Poraver and L y t a g . The dimensional s t a b i l i t y as determined from d r y i n g shrinkage t e s t s (ASTM C157, C331) v a r i e d w i d e l y between t h e f o u r types o f aggregate. The one w i t h the g r e a t e s t shrinkage was A a r d e l i t e and t h e one w i t h the l e a s t was S o l i t e . The r e l a t i o n s h i p of t h e s h r i n k a g e t o t h e p o r o s i t y of t h e aggregate i s i m p o r t a n t . The p o r o s i t y ranges from t h e l i g h t e r expanded glass ( w i t h i n t e r c o n n e c t e d pores) i n t h e case of Poraver t o expanded shale produced by t h e r o t a r y k i l n method t h a t has e s s e n t i a l l y n o n i n t e r c o n n e c t e d pores i n t h e case of S o l i t e . I t i s t h e n a t u r e o f how p o r o s i t y i s a c h i e v e d r a t h er than t h e degree o f p o r o s i t y t h a t i s i m p o r t a n t i n terms of dimensional s t a b i l i t y.
dc.description.copyrightNot available for use outside of the University of New Brunswick
dc.description.noteGoodine, Lloyd (1990). The influence of microstructure on the dimensional stability of lightweight aggregate concrete . (Engineering Senior Report no. T-1455 1990). Fredericton : University of New Brunswick, Dept. of Civil Engineering T-1455 1990 1882/16505
dc.format.mediumelectronic
dc.identifier.urihttps://unbscholar.lib.unb.ca/handle/1882/35102
dc.language.isoen_CA
dc.publisherUniversity of New Brunswick
dc.rightshttp://purl.org/coar/access_right/c_16ec
dc.subject.disciplineEngineering
dc.titleThe influence of microstructure on the dimensional stability of lightweight aggregate concrete
dc.typesenior report
thesis.degree.disciplineEngineering
thesis.degree.fullnameBachelor of Science in Engineering
thesis.degree.grantorUniversity of New Brunswick
thesis.degree.levelundergraduate
thesis.degree.nameB.Sc.E.

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