Flexural performance of green engineered cementitious composites containing high volume of palm oil fuel ash

Altwair, Nurdeen M.; Johari, Megat Azmi Megat; Hashim, Syed Fuad Saiyid

doi:10.1016/j.conbuildmat.2012.08.003

Cited by 121 publications

(42 citation statements)

References 19 publications

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“…The material is palm oil fuel ash (POFA) [20]. POFA is a by-product of the burning of fruit bunches, shells, kernels, and fibers and is utilized to generate electricity for palm oil mill boilers [21].…”

Section: Introductionmentioning

confidence: 99%

Influence of palm oil fuel ash on ultimate flexural and uniaxial tensile strength of green ultra-high performance fiber reinforced cementitious composites

Aldahdooh

Bunnori

Johari

2014

Materials & Design (1980-2015)

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Section: Introductionmentioning

confidence: 99%

Influence of palm oil fuel ash on ultimate flexural and uniaxial tensile strength of green ultra-high performance fiber reinforced cementitious composites

Aldahdooh

Bunnori

Johari

2014

Materials & Design (1980-2015)

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“…The reality of the durability performance of alkaliactivated binder is dependent on the source material used and the concentration of exposure acids. A number of researchers (Altwair et al 2012;Johari et al 2013) have studied fresh and hardened alkali-activated properties of POFA and its blends with other materials, but limited studies are presently available on its durability performance. One of the very few studies was where Ariffin et al (2013) utilized POFA blended with pulverized fuel ash (PFA) in the development of alkaliactivated concrete and its durability performance when exposed to 2% sulfuric acid was studied.…”

Section: Introductionmentioning

confidence: 99%

POFA-Engineered Alkali-activated Cementitious Composite Performance in Acid Environment

Salami

Johari

Ahmad

et al. 2017

ACT

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The durability performance of palm oil fuel ash engineered alkali-activated cementitious composite (POFA-EACC) mortar exposed to different acid solutions is assessed in this study. 50 mm cubic specimens used for the study were prepared from 100% POFA, alkali-activator (Na 2 SiO 3(aq) /NaOH (aq) ) ratios of 2.5, different molarities (10, 12 and 14 M) of NaOH (aq) and 2% volume fraction of polyvinyl alcohol (PVA) fibres. Specimens were exposed to 10% H 2 SO 4(aq) , 10% HNO 3(aq) and 10% HCl (aq) at pH of 0.56, 0.52 and 0.42 respectively for 3, 6 and 9 months, with unexposed specimens as control. Small changes in compressive strength were identified with POFA mortar specimens during exposure to H 2 SO 4(aq) , while exposure to HNO 3(aq) and HCl (aq) greatly reduced the strength of the POFA mortar specimens. The results were supported through microstructural examinations using SEM, while the characterization was done using XRD and FTIR. The high resistance of POFA-EACC mortar to H 2 SO 4(aq) is the contribution received through the formation of gypsum, which hinders the infiltration of more acids into the matrix microstructure.

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“…Grade I composite fly ash was used. e compressive strength of the specimen was 36.6 MPa at 28 days [16].…”

Section: Specimen Dimensions and Materialsmentioning

confidence: 99%

“…e average failure fracture energy of the ECC is 7.77 kJ/m 2 , which is approximately 740 times that of the matrix. e ultimate load can be determined as 7 kN according to the average value of ultimate load of three specimens [16]. …”

Section: P-cmod Curvesmentioning

confidence: 99%

Effect of Low‐Stress Fatigue on the Off‐Crack‐Plane Fracture Energy in Engineered Cementitious Composites

Liu

Gao

Xin

et al. 2018

Advances in Civil Engineering

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is paper presented an experimental study on the flexural properties of engineered cementitious composites (ECCs). e bending fatigue damage, residual deformation, and damage characteristics were investigated after a certain number of low stress levels in fatigue load. e composite fracture energy and fiber-bridging fracture energy were calculated by the J integral. It is observed that the number of cracks increased with the increment of stress levels, and most of the cracks were formed during the earlier stage of the dynamic test. e deformation capability decreased with the increment of stress levels while the reduction of the ultimate load was minor after the dynamic load. Furthermore, the strain-hardening phenomenon of the specimen enhanced initially and then weakened with the increment of stress levels. e residual equivalent yield strength became smaller with the increase of stress levels. Meanwhile, the trend was mild at low stress levels and then became steep at high stress levels.

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Flexural performance of green engineered cementitious composites containing high volume of palm oil fuel ash

Cited by 121 publications

References 19 publications

Influence of palm oil fuel ash on ultimate flexural and uniaxial tensile strength of green ultra-high performance fiber reinforced cementitious composites

Influence of palm oil fuel ash on ultimate flexural and uniaxial tensile strength of green ultra-high performance fiber reinforced cementitious composites

POFA-Engineered Alkali-activated Cementitious Composite Performance in Acid Environment

Effect of Low‐Stress Fatigue on the Off‐Crack‐Plane Fracture Energy in Engineered Cementitious Composites

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