A Study on the Combined Effects of Silica Fume Particles and Polyethylene Terephthalate Fibres on the Mechanical and Microstructural Characteristics of Cemented Sand

In this research, a study was undertaken to investigate the effects of silica fume particles and randomly distributed polyethylene terephthalate (PET) fibres on the behaviour of cemented sand through a comprehensive experimental programme including unconfined compression, pH and microstructure tests...

Full description

Saved in:
Bibliographic Details
Published in:International journal of geosynthetics and ground engineering 2021-12, Vol.7 (4), Article 98
Main Authors: Hasanzadeh, Ali, Shooshpasha, Issa
Format: Article
Language:English
Subjects:
Atomic force microscopy
Building Materials
Compression tests
Compressive strength
Energy absorption
Engineering
Environmental Science and Engineering
Fibers
Foundations
Geoengineering
Hydraulics
Microscopy
Microstructure
Original Paper
Polyethylene terephthalate
Sand
Silica fume
Silicon dioxide
Stiffness
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this research, a study was undertaken to investigate the effects of silica fume particles and randomly distributed polyethylene terephthalate (PET) fibres on the behaviour of cemented sand through a comprehensive experimental programme including unconfined compression, pH and microstructure tests. Three cement contents, four contents of silica fume and five percentages of PET fibres with three different lengths were selected. Then, different specimens were prepared and cured for 3, 7, 14, 28, 42 and 56 days. It was found that there are optimum amounts for silica fume content, curing time as well as content and length of PET fibres at which unconfined compressive strength (UCS) presents the best improvement. Based on the obtained results, silica fume inclusion to cemented sand increases stiffness and energy absorption (EA) capacity while decreases pH. It was found that with the increase of PET fibres, stiffness reduces and EA capacity increases. Some relations have also been introduced between stiffness and UCS of silica fume-cemented sand reinforced with PET fibres. Finally, the microstructure features of the samples were investigated through Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) analyses. Moreover, X-ray Diffraction (XRD) tests were performed for mineral identification.
ISSN:2199-9260
2199-9279
DOI:10.1007/s40891-021-00340-4