A novel type of controlled low strength material derived from alum sludge and green materials
Construction and Building Materials（2018）
Abstract
•Alum sludge can be recycled as fine aggregate into eco-friendly CLSM.•Alum sludge addition increased water demand and hindered CH formation.•PFA was a promising supplementary cementitious material for producing CLSM.•Addition of CaCl2 or TEA effectively shortened overlong stiffening time.
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Key words
Waterworks sludge,Waste recycling,Cement chemistry,CLSM,Construction materials,Flowability,Stiffening time,Fly ash
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