Effects of POFA replaced with FA on durability properties of GBFS included alkali activated mortars
MetadataShow full item record
© 2018 Concrete durability is a major concern in the construction sector worldwide. Recycled industrial and agriculture wastes based concrete production was shown to be beneficial in terms of enhanced durability performance and environmental friendliness. The effects of palm oil fuel ash (POFA) replacement by fly ash (FA) on the durability properties of ternary alkali activated mortars (AAMs) containing ground blast furnace slag (GBFS) was evaluated. The mixes were designed with six levels of POFA replaced by 0, 10, 20, 30, 40 and 50% (by weight) of FA. Durability properties such as porosity, drying shrinkage, resistances to freezing-thawing cycles, wet-dry cycles, abrasion, sulphuric acid and sulphate attack were investigated. The mortar containing 10% of FA as a replacement of POFA disclosed the best compressive strength amongst all the mixes at the age beyond 180 days. The overall durability performance of the AAMs obtained from POFA replaced by FA displayed an enhancement in porosity as well as dry shrinkage and a reduction in the resistances to freezing-thawing cycles, abrasion, acid and sulphate attack.
Showing items related by title, author, creator and subject.
Rajak, M.; Majid, Z.; Ismail, Mohamed (2015)© 2015 The Authors Recently, nano-sized additives and supplementary cementing materials (SCM) have shown to improve the mechanical and durability of mortars and concretes. This study investigates the incorporation of ...
Bamaga, S.; Hussin, M.; Ismail, Mohamed (2013)Palm Oil Fuel Ash (POFA) is by-product obtained by burning of fibers, shells and empty fruit bunches as fuel in palm oil mill boilers. In this investigation, three ashes were collected from different palm oil mills around ...
Rahman, Muhammad; Boon, A.L.; Muntohar, A.S.; Hashem Tanim, M.N.; Pakrashi, V. (2014)This paper presents an experimental study on the development of masonry block with Palm Oil Fuel Ash (POFA) as a partial replacement to cement whilst maintaining satisfactory properties of masonry block. The dosages of ...