Experimental investigation on compressive strength of cement mortar using nano clay and flay ash
In the present paper, compressive strength of cement mortar was investigated through two cases: case I in which just nano-clay (Nano clay to cement proportion equal to 3% and %5) is included, and case II in which both nano-clay and fly ash were considered (with the same values for Nano-clay as case...
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Iranian Society of Structrual Engineering (ISSE)
2016-06-01
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doaj-7db5446f6bde4e56aaf56efdd0eeb1722020-11-24T23:04:53ZfasIranian Society of Structrual Engineering (ISSE)Journal of Structural and Construction Engineering2476-39772538-26162016-06-0131384838585Experimental investigation on compressive strength of cement mortar using nano clay and flay ashE. Khalilzadeh Vahidi0N. Moradi1Assistant professor, Department of Engineering, Razi University of Kermanshah, Kermanshah, IranMSc student in Structural Engineering, Department of Engineering, Razi University of Kermanshah, Kermanshah, IranIn the present paper, compressive strength of cement mortar was investigated through two cases: case I in which just nano-clay (Nano clay to cement proportion equal to 3% and %5) is included, and case II in which both nano-clay and fly ash were considered (with the same values for Nano-clay as case I, and with fly ash to cement proportion equal to 15%). Gradual interaction of fly Ash with calcium hydroxide and alkalins resulted from cement hydration process, produces more C-S-H, spreading through concrete substructure free spaces. Results indicated that, all samples which contain nano-clay are denser than the reference sample. Adding fly ash and nano-clay have resulted in decreasing short term period (relating to three and seven days age) compressive strength of cement mortar. The 28 day age compressive strength of samples of case I, showed a dramatic increase about 27.2% for proportion value equal to 3%, and a considerable increase about 15.1%, for proportion value of equal to 5%. Results, also indicated a considerable increase in the 90 day age compressive strength that was about 28.4% and 22.4% respectively relating to two proportion values, 3% and 5%. The 28 day age compressive strength of samples of case II increased about 1.6% and 4.5% respectively, relating to two values of nano-clay to cement proportion equal to 3% and 5%. The 90 day age compressive strength of samples of case II, showed an increase about 10% and 16% respectively, relating to two values of nano-clay to cement proportion equal to 3% and 5%.http://www.jsce.ir/article_38585_6e97ffe170993178aa1990515b3def27.pdfCompressive strengthNano clay Fly ash Water absorption Scanning Electron Microscopy (SEM) |
collection |
DOAJ |
language |
fas |
format |
Article |
sources |
DOAJ |
author |
E. Khalilzadeh Vahidi N. Moradi |
spellingShingle |
E. Khalilzadeh Vahidi N. Moradi Experimental investigation on compressive strength of cement mortar using nano clay and flay ash Journal of Structural and Construction Engineering Compressive strength Nano clay Fly ash Water absorption Scanning Electron Microscopy (SEM) |
author_facet |
E. Khalilzadeh Vahidi N. Moradi |
author_sort |
E. Khalilzadeh Vahidi |
title |
Experimental investigation on compressive strength of cement mortar using nano clay and flay ash |
title_short |
Experimental investigation on compressive strength of cement mortar using nano clay and flay ash |
title_full |
Experimental investigation on compressive strength of cement mortar using nano clay and flay ash |
title_fullStr |
Experimental investigation on compressive strength of cement mortar using nano clay and flay ash |
title_full_unstemmed |
Experimental investigation on compressive strength of cement mortar using nano clay and flay ash |
title_sort |
experimental investigation on compressive strength of cement mortar using nano clay and flay ash |
publisher |
Iranian Society of Structrual Engineering (ISSE) |
series |
Journal of Structural and Construction Engineering |
issn |
2476-3977 2538-2616 |
publishDate |
2016-06-01 |
description |
In the present paper, compressive strength of cement mortar was investigated through two cases: case I in which just nano-clay (Nano clay to cement proportion equal to 3% and %5) is included, and case II in which both nano-clay and fly ash were considered (with the same values for Nano-clay as case I, and with fly ash to cement proportion equal to 15%). Gradual interaction of fly Ash with calcium hydroxide and alkalins resulted from cement hydration process, produces more C-S-H, spreading through concrete substructure free spaces. Results indicated that, all samples which contain nano-clay are denser than the reference sample. Adding fly ash and nano-clay have resulted in decreasing short term period (relating to three and seven days age) compressive strength of cement mortar. The 28 day age compressive strength of samples of case I, showed a dramatic increase about 27.2% for proportion value equal to 3%, and a considerable increase about 15.1%, for proportion value of equal to 5%. Results, also indicated a considerable increase in the 90 day age compressive strength that was about 28.4% and 22.4% respectively relating to two proportion values, 3% and 5%. The 28 day age compressive strength of samples of case II increased about 1.6% and 4.5% respectively, relating to two values of nano-clay to cement proportion equal to 3% and 5%. The 90 day age compressive strength of samples of case II, showed an increase about 10% and 16% respectively, relating to two values of nano-clay to cement proportion equal to 3% and 5%. |
topic |
Compressive strength Nano clay Fly ash Water absorption Scanning Electron Microscopy (SEM) |
url |
http://www.jsce.ir/article_38585_6e97ffe170993178aa1990515b3def27.pdf |
work_keys_str_mv |
AT ekhalilzadehvahidi experimentalinvestigationoncompressivestrengthofcementmortarusingnanoclayandflayash AT nmoradi experimentalinvestigationoncompressivestrengthofcementmortarusingnanoclayandflayash |
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