Mechanical behaviour and durability of high volume fly ash cementitious composites
The purpose of this research is to separate different morphological particles of ASTM class F fly ash, and study their effect on mechanical behaviour and durability of high volume cementitious mixtures. In this research wet separation of raw fly ash is carried out, which resulted in three layers of...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2016-10-01
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| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero38/numero_38_art_41.pdf |
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| author | Usman Haider Zdeněk Bittnar Lubomír Kopecky Petr Bittnar Jiří Němeček Asif Ali Jaroslav Pokorny |
| author_facet | Usman Haider Zdeněk Bittnar Lubomír Kopecky Petr Bittnar Jiří Němeček Asif Ali Jaroslav Pokorny |
| author_sort | Usman Haider |
| collection | DOAJ |
| description | The purpose of this research is to separate different morphological particles of ASTM class F fly ash, and study their effect on mechanical behaviour and durability of high volume cementitious mixtures. In this research wet separation of raw fly ash is carried out, which resulted in three layers of different morphological particles. The first layer of particles float, comprise of about 1-5% of fly ash, is identified as cenospheres or hollow spheres. The second layer of particles is measured to be 55-60% of raw fly ash and consisting of porous spherical and rounded particles rich in Si and Al. The third layer particles is measured to be about 35-40% of raw fly ash. High volume fly ash cementitious composites containing second or third layer particles are tested under compression and bending, highlighting a higher strength and ductility in comparison to cementitious ones containing raw fly ash particles |
| format | Article |
| id | doaj-art-ce0724f250ec4952bcbf52fc19d3465e |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2016-10-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-ce0724f250ec4952bcbf52fc19d3465e2025-01-03T00:39:35ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932016-10-01103830531810.3221/IGF-ESIS.38.41Mechanical behaviour and durability of high volume fly ash cementitious compositesUsman Haider0Zdeněk Bittnar1Lubomír Kopecky2Petr Bittnar3Jiří Němeček4Asif Ali 5Jaroslav Pokorny6Czech Technical University in Prague, Czech RepublicCzech Technical University in Prague, Czech RepublicCzech Technical University in Prague, Czech RepublicCzech Technical University in Prague, Czech RepublicCzech Technical University in Prague, Czech RepublicUniversity of Engineering and Technology, Lahore, Pakistan Czech Technical University in Prague, Czech Republic The purpose of this research is to separate different morphological particles of ASTM class F fly ash, and study their effect on mechanical behaviour and durability of high volume cementitious mixtures. In this research wet separation of raw fly ash is carried out, which resulted in three layers of different morphological particles. The first layer of particles float, comprise of about 1-5% of fly ash, is identified as cenospheres or hollow spheres. The second layer of particles is measured to be 55-60% of raw fly ash and consisting of porous spherical and rounded particles rich in Si and Al. The third layer particles is measured to be about 35-40% of raw fly ash. High volume fly ash cementitious composites containing second or third layer particles are tested under compression and bending, highlighting a higher strength and ductility in comparison to cementitious ones containing raw fly ash particleshttp://www.gruppofrattura.it/pdf/rivista/numero38/numero_38_art_41.pdfCementitious matrixRaw fly ashSecond layer particlesThird layer particles |
| spellingShingle | Usman Haider Zdeněk Bittnar Lubomír Kopecky Petr Bittnar Jiří Němeček Asif Ali Jaroslav Pokorny Mechanical behaviour and durability of high volume fly ash cementitious composites Fracture and Structural Integrity Cementitious matrix Raw fly ash Second layer particles Third layer particles |
| title | Mechanical behaviour and durability of high volume fly ash cementitious composites |
| title_full | Mechanical behaviour and durability of high volume fly ash cementitious composites |
| title_fullStr | Mechanical behaviour and durability of high volume fly ash cementitious composites |
| title_full_unstemmed | Mechanical behaviour and durability of high volume fly ash cementitious composites |
| title_short | Mechanical behaviour and durability of high volume fly ash cementitious composites |
| title_sort | mechanical behaviour and durability of high volume fly ash cementitious composites |
| topic | Cementitious matrix Raw fly ash Second layer particles Third layer particles |
| url | http://www.gruppofrattura.it/pdf/rivista/numero38/numero_38_art_41.pdf |
| work_keys_str_mv | AT usmanhaider mechanicalbehaviouranddurabilityofhighvolumeflyashcementitiouscomposites AT zdenekbittnar mechanicalbehaviouranddurabilityofhighvolumeflyashcementitiouscomposites AT lubomirkopecky mechanicalbehaviouranddurabilityofhighvolumeflyashcementitiouscomposites AT petrbittnar mechanicalbehaviouranddurabilityofhighvolumeflyashcementitiouscomposites AT jirinemecek mechanicalbehaviouranddurabilityofhighvolumeflyashcementitiouscomposites AT asifali mechanicalbehaviouranddurabilityofhighvolumeflyashcementitiouscomposites AT jaroslavpokorny mechanicalbehaviouranddurabilityofhighvolumeflyashcementitiouscomposites |