title: Comparing the use of sewage sludge ash and glass powder in cement mortars.
abstract: This study explored the suitability of using sewage sludge ash (SSA) and mixed-colored glass powder (MGP) as construction materials in cement mortars. Positive findings from this study may help promote the recycling of waste SSA and MGP in construction works. The results indicated that the SSA decreased while MGP improved the mortar workability. The SSA exhibited very low pozzolanic activity, but the cement mortar prepared with 20% SSA yielded strength values slightly superior to those of the glass mortars due to its water absorption ability. MGP can serve as a pozzolan and when 20% of cement was replaced by MGP, apparent compressive strength gains were found at later curing ages. The SSA could be used to mitigate ASR expansion while the MGP was superior in resisting drying shrinkage.
authors: a Department of Civil and Environmental Engineering , The Hong Kong Polytechnic University , Hung Hom , Kowloon , Hong Kong.
authors: Zhen
authors: Z
authors: Chen
authors: a Department of Civil and Environmental Engineering , The Hong Kong Polytechnic University , Hung Hom , Kowloon , Hong Kong.
authors: Chi Sun
authors: CS
authors: Poon
mesh_terms: D019245:Compressive Strength; D003252:Construction Materials; D005898:Glass; D019216:Metals, Heavy / Q000032:analysis; D010316:Particle Size; D011208:Powders; D059027:Recycling / Q000379:methods*; D012722:Sewage; D018505:Waste Management / Q000379:methods*; D014867:Water / Q000737:chemistry
chemical_list: D019216:Metals, Heavy; D011208:Powders; D012722:Sewage; D014867:Water
keywords: Sewage sludge ash; alkali-silica reaction; cement mortars properties; glass powder; recycling