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Effect of Using Micropalm Oil Fuel Ash as Partial Replacement of Cement on the Properties of Cement Mortar

Title
Effect of Using Micropalm Oil Fuel Ash as Partial Replacement of Cement on the Properties of Cement Mortar
Author
이한승
Keywords
RICE-HUSK ASH; BLENDED CEMENT; MECHANICAL-PROPERTIES; FLY-ASH; PALM; CONCRETE; HYDRATION; MICROSTRUCTURE; STRENGTH; FINENESS
Issue Date
2018-11
Publisher
HINDAWI LTD
Citation
ADVANCES IN MATERIALS SCIENCE AND ENGINEERING, v. 2018, Article no. 5164030
Abstract
This study investigates the effects of micropalm oil fuel ash (mPOFA) on compressive strength and pore structure of cement mortar. Various experimental techniques, such as compression test, isothermal calorimetry, mercury intrusion porosimetry, and X-ray diffraction, are performed to figure out the effect of using mPOFA as partial replacement of cement on the hydration of cement and determine its optimal replacement level to increase mechanical property of the mortar specimens. 10 wt.% of cement replacement with mPOFA is found to give the highest level of compressive strength, achieving a 23% increase over the control specimens after 3 days of curing. High K2O contents in mPOFA stimulate C3S in cement to form C-S-H at early ages, and high surface area of mPOFA acts as a nucleus to develop C-S-H. Also, small mPOFA particles and C-S-H formed by pozzolanic reaction fill the pores and lead to reduction in large capillary pores. In XRD analysis, a decrease in Ca(OH)(2) and SiO2 contents with age confirmed a high pozzolanic reactivity of mPOFA.
URI
https://www.hindawi.com/journals/amse/2018/5164030/http://repository.hanyang.ac.kr/handle/20.500.11754/98781
ISSN
1687-8434; 1687-8442
DOI
10.1155/2018/5164030
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ARCHITECTURE(건축학부) > Articles
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