TA358 : Workability, mechanical and durability properties of Polypropylene reinforced self-compacting mortar containing ground glass and nano silica
Thesis > Central Library of Shahrood University > Civil & Architectural Engineering > MSc > 2016
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Abstarct: In this experimental research, ground glass (GG) and nano-silica were incorporated in self-compacting mortar (SCM) as cement replacement. The substitution percentage for GG was 10, 15 and 20% and 2, 3 and 4% for nano-silica. The experiments included slump diameter, compressive strength, flexural strength, water absorption and acid resistance tests. The specimens were also reinforced with polypropylene fibers.
The results indicates that although the optimum percentage for GG was 15% replacement, samples with 20% GG also show desirable mechanical strength and also acceptable durability properties. Consequently incorporation of GG in SCMs is absolutely feasible and contributes to the better performances. In addition, using nano-silica up to 2% of cement weight is an effective way for even better properties.
Scanning electron micrograph (SEM) photos of samples at 28 days of curing demonstrates the increased amount of C-S-H gel in samples containing GG. A uniform pore distribution of samples was also perceptible when GG was added to samples. The SEM photos also shows many pores as big as 20 μm in samples containing 3% nano silica.
Keywords:
#ground glass #self-compacting #nano-silica #polypropylene fibers #compressive strength #flexural strength #water absorption #acid resistance #SEM photos Link
Keeping place: Central Library of Shahrood University
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Keeping place: Central Library of Shahrood University
Visitor: