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    Low energy pre-blended mortars: Part 1-Control of the sand drying process using a lime drying technique

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    Publication date
    2015-12-30
    Author
    Hughes, David C.
    Illingworth, J.M.
    Keyword
    Mortar
    ; Sand drying
    ; Quicklime
    ; Slaking
    ; Process control
    ; Calcium hydroxide
    ; Surface-properties
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    Produttion control methods allow factory produced mortars to be supplied to a more consistent formulation than site produced mortars. However, there is scope to enhance their "sustainability" credentials by addressing the methods of drying the wet sand and the use of lower energy hydraulic components. This paper describes the development of a technique in which quicklime is added in controlled quantities to remove free water by both chemical combination and evaporation. The slaked lime so generated is porous and a third mechanism of absorption is suggested which, however, might have adverse effects during storage of the pre-blended mortar. The principal process-control factors are lime addition based upon a ratio of the stoichiometric requirements for complete slaking of the quicklime, free moisture content of the sand, mixing time of the combined sand and quicklime, and storage of the mixed material. (C) 2015 Elsevier Ltd. All rights reserved.
    URI
    http://hdl.handle.net/10454/9161
    Version
    No full-text available in the repository
    Citation
    Hughes DC and Illingworth JM (2015) Low energy pre-blended mortars: Part 1-Control of the sand drying process using a lime drying technique. Construction and Building Materials. 101(1): 466-473.
    Link to publisher’s version
    http://dx.doi.org/10.1016/j.conbuildmat.2015.10.043
    Type
    Article
    Collections
    Engineering and Digital Technology Publications

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