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...University of southern queensland faculty engineering and surveying the effect admixtures in concrete containing manufactured sand a dissertation submitted by mark james krinke fulfilment requirements courses eng research project towards degree bachelor civil october abstract this investigates effects that varying water cement ratios superplasticiser have on as complete replacement for natural due to current levels construction australia there is an ever decreasing availability sands suitable use fine aggregate which are product rock crushing operations offer viable solution declining however number drawbacks particularly poor workability finish obtained caused high fines content...