The Effect of Eggshell Powder as an Accelerator for Blended Cement Concrete

2020 ◽  
Vol 17 (2) ◽  
pp. 1032-1036
Author(s):  
Nur Nadhira Abdul Rasid ◽  
Abdul Rahman Mohd. Sam ◽  
Azman Mohamed ◽  
Nor Hasanah Abdul Shukor Lim ◽  
Zaiton Abdul Majid ◽  
...  
Keyword(s):  
Calcium Oxide ◽  
Palm Oil ◽  
Concrete Strength ◽  
Strength Development ◽  
Early Age ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Early Strength ◽  
Oil Fuel ◽  
Silica Oxide

Blended concrete has later strength development with long maturity strength development. An accelerator is thus needed to enhance the early strength development of concrete. This paper shows the combination of ground palm oil fuel ash and eggshell powder that was designed for later and early strength development, respectively. Two types of eggshell powder were utilised in concrete: uncarbonised eggshell powder and decarbonised eggshell powder. The study was initiated with compression test for concrete curing at age 1, 3, 7, and 28 days followed by rapid evaluation test of setting time to investigate the preliminary performance between materials. The results revealed decarbonised eggshell powder as a high accelerator that can improve the early age of concrete strength development. Meanwhile, despite showing the best performance, uncarbonised eggshell powder is a very low accelerator thus not fit the purpose. In conclusion, the combination of ground palm oil fuel ash (rich with silica oxide) and decarbonised eggshell powder (rich with calcium oxide) provided dual function, where ground palm oil fuel ash and decarbonised eggshell powder took later and early strength development, respectively. The combination between silica oxide and calcium oxide in cementitious materials has potential to be utilised to enhance the early age of a blended concrete strength development.

THE EFFECT OF OIL PALM KERNEL SHELL IN PRODUCING DIFFERENT TYPES OF POFA BASED MORTAR

2015 ◽  
Vol 77 (12) ◽  
Author(s):  
Nor Hasanah Abdul Shukor Lim ◽  
Mohd Warid Hussin ◽  
Abdul Rahman Mohd. Sam ◽  
Mostafa Samadi ◽  
Mohamed A. Ismail ◽  
...  
Keyword(s):  
Palm Oil ◽  
Oil Palm ◽  
Palm Kernel ◽  
High Volume ◽  
Strength Development ◽  
Palm Oil Fuel Ash ◽  
Palm Kernel Shell ◽  
Fuel Ash ◽  
Different Types ◽  
Oil Fuel

This paper presents the utilization of palm oil fuel ash and oil palm kernel shell as cement and sand replacement, respectively in the production of palm oil fuel ash based mortar mixes as part of new and innovative materials in the construction industry. The study includes basic properties such as water absorption, density, compressive strength, and microstructure test with regards to variations in the mix design process. In order to get better performance in terms of strength development, the ash used was subjected to heat treatment and grounded to the size of less than 2 µm. High volume of 80% palm oil fuel ash was used as cement replacement, while 25%, 50%, 75%, and 100% of oil palm kernel shell was used as sand replacement. The results indicated that the density of the mortar decreases with increasing volume of oil palm kernel ash as sand replacement. Three different types of mortar were produced with different percentages of oil palm kernel shell, which was high strength, medium strength, and low strength lightweight mortars.

scholarly journals The Effect of Variation of Molarity of Alkali Activator and Fine Aggregate Content on the Compressive Strength of the Fly Ash: Palm Oil Fuel Ash Based Geopolymer Mortar

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Iftekhair Ibnul Bashar ◽  
U. Johnson Alengaram ◽  
Mohd Zamin Jumaat ◽  
Azizul Islam
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Palm Oil ◽  
Alkaline Solution ◽  
Strength Development ◽  
Fine Aggregate ◽  
Palm Oil Fuel Ash ◽  
Alkali Activator ◽  
Fuel Ash ◽  
Oil Fuel

The effect of molarity of alkali activator, manufactured sand (M-sand), and quarry dust (QD) on the compressive strength of palm oil fuel ash (POFA) and fly ash (FA) based geopolymer mortar was investigated and reported. The variable investigated includes the quantities of replacement levels of M-sand, QD, and conventional mining sand (N-sand) in two concentrated alkaline solutions; the contents of alkaline solution, water, POFA/FA ratio, and curing condition remained constant. The results show that an average of 76% of the 28-day compressive strength was found at the age of 3 days. The rate of strength development from 3 to 7 days was found between 12 and 16% and it was found much less beyond this period. The addition of 100% M-sand and QD shows insignificant strength reduction compared to mixtures with 100% N-sand. The particle angularity and texture of fine aggregates played a significant role in the strength development due to the filling and packing ability. The rough texture and surface of QD enables stronger bond between the paste and the fine aggregate. The concentration of alkaline solution increased the reaction rate and thus enhanced the development of early age strength. The use of M-sand and QD in the development of geopolymer concrete is recommended as the strength variation between these waste materials and conventional sand is not high.

Early age shrinkage cracking of restrained metakaolin-slag-palm oil fuel ash binder geopolymer mortars

2018 ◽  
Vol 7 (5) ◽  
pp. 271-295 ◽  
Author(s):  
Ali Mohamed Ali Aboshia ◽  
Riza Atiq Rahmat ◽  
Muhammad Fauzi Mohd Zain ◽  
Amiruddin Ismail
Keyword(s):  
Palm Oil ◽  
Early Age ◽  
Shrinkage Cracking ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Oil Fuel

scholarly journals The Effects of Nanosized-Palm Oil Fuel Ash on Early Age Hydration of Hardened Cement Paste: The Microstructure Studies

2021 ◽  
Vol 82 (2) ◽  
pp. 87-95
Author(s):  
Mohd Azrul Andul Rajak ◽  
Zaiton Abdul Majid ◽  
Mohammad Ismail
Keyword(s):  
Cement Paste ◽  
Palm Oil ◽  
Cement Hydration ◽  
Pozzolanic Reaction ◽  
Early Age ◽  
Hardened Cement ◽  
Hardened Cement Paste ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Oil Fuel

Integration of cement-based products with nanosized-palm oil fuel ash as supplementary cementing material (SCM) amend its hydration’s degree at early age phase and the microstructural groundworks are relevant to explain the findings. Hence, the present work investigates the microstructure properties of the hardened cement paste (HCP) incorporating nPOFA to study on the effect of nPOFA in cement hydration at an early age phase. An Ordinary Portland Cement (OPC) paste as a set of HCP blended with microsized-palm oil fuel ash (mPOFA) (10-30%) and nPOFA (10-60%) were prepared and cured for 28 days. The microstructural examination of OPC, mPOFA and nPOFA cement pastes at 28 days curing age via Thermogravimetric (TG) analysis, X-Ray diffraction (XRD) analysis, morphology study and Fourier transform infrared (FTIR) spectroscopy analysis. In TG analysis, the relative weight loss of calcium hydroxide (CH) of nPOFA pastes is lower than OPC and mPOFA. Based on the CH peaks at 2?= 18.1°and 34.0° in the diffractogram, it shows that nPOFA pastes give the low CH peaks compare to OPC and mPOFA pastes. In addition, the nPOFA pastes form the dense and compact microstructure of HCP compare to other pastes. Observations from FTIR analysis, nPOFA pastes display a high frequency of Si-O band due to the high rate of pozzolanic reaction. Overall, the findings confirmed the contribution of nPOFA in accelerating the rate of cement hydration and pozzolanic reaction as it reduced the amount of CH in the cementitious matrix.

Impacts of silica modulus on the early strength of alkaline activated ground slag/ultrafine palm oil fuel ash based concrete

2014 ◽  
Vol 48 (3) ◽  
pp. 733-741 ◽  
Author(s):  
Moruf Olalekan Yusuf ◽  
Megat Azmi Megat Johari ◽  
Zainal Arifin Ahmad ◽  
Mohammed Maslehuddin
Keyword(s):  
Palm Oil ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Early Strength ◽  
Oil Fuel

scholarly journals Strength Development and Microstructural Behavior of Soils Stabilized with Palm Oil Fuel Ash (POFA)-Based Geopolymer

2021 ◽  
Vol 11 (8) ◽  
pp. 3572
Author(s):  
Isam Adnan Khasib ◽  
Nik Norsyahariati Nik Daud ◽  
Noor Azline Mohd Nasir
Keyword(s):  
Palm Oil ◽  
Soil Stabilization ◽  
Soft Soil ◽  
Microstructural Analysis ◽  
Dry Weight ◽  
Strength Development ◽  
Palm Oil Fuel Ash ◽  
Direct Shear Tests ◽  
Fuel Ash ◽  
Oil Fuel

Using geopolymer in soil stabilization has gained much attention recently due to its efficiency in improving soil properties and being environmentally friendly at the same time. This research aims to investigate the effect of palm oil fuel ash (POFA)-based geopolymer on soft soil stabilization. The mechanical and microstructural performance of two types of clay soil treated with geopolymer produce from POFA material was the focus of this study. In this respect, a series of unconfined compression and direct shear tests were conducted to investigate the mechanical properties of soils treated with POFA-based geopolymer. Furthermore, the microstructural changes in the treated samples were analyzed using field emission electron microscopy (FESEM) and energy dispersive X-ray (EDX). In accordance with the results, it was indicated that the shear strength of both soils soared by increasing the dosage of POFA-based geopolymer. Geopolymer with 40% POFA of the dry weight of soils yielded the highest UCS value at both curing periods, 7 and 28 days. Furthermore, the microstructural analysis revealed material modifications (N-A-S-H gel formation) related to strength enhancement. These results suggest the potentiality of using a POFA-based geopolymer binder to stabilize soft soil.

Early Strength Characteristics of Palm Oil Fuel Ash and Metakaolin Blended Geopolymer Mortar

2013 ◽  
Vol 690-693 ◽  
pp. 1045-1048 ◽  
Author(s):  
Mohammad Ismail ◽  
Taliat Ola Yusuf ◽  
Ainul H Noruzman ◽  
I. O. Hassan
Keyword(s):  
Compressive Strength ◽  
Palm Oil ◽  
Water Demand ◽  
Strength Characteristics ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Strength Behavior ◽  
Maximum Compressive Strength ◽  
Early Strength ◽  
Oil Fuel

In this paper, the early strength behavior of Metakaolin and Palm Oil Fuel Ash (POFA) based geopolymer mortar was investigated for the purpose of exploring the utilization of POFA which is a waste material generated from production of palm oil. Geopolymer mortar was prepared by activating metakaolin combined with POFA at 0%, 30%, 40%, 50%, 60%, 70% and 80% replacement levels in NaOH and Na2SiO3 medium. The mortar specimens were tested for compressive strength at 3 and 7days. The maximum compressive strength at 3 and 7days are 65.264MPa and 68.863MPa respectively corresponding to a POFA replacement of 40%. A replacement of 80% POFA to 20% Metakaolin gave compressive strength as high as 26.174MPa and 30.791MPa for 3 and 7 days. It was also discovered that water demand of the system reduced with increase in POFA replacement. It is concluded that POFA addition to metakaolin can improve behavior of Metakaolin and POFA geopolymer system.

Mechanical Properties of Engineered Cementitious Composite with Palm Oil Fuel Ash as a Supplementary Binder

2012 ◽  
Vol 626 ◽  
pp. 121-125 ◽  
Author(s):  
Nurdeen M. Altwair ◽  
M.A. Megat Johari ◽  
Syed Fuad Saiyid Hashim ◽  
A.M. Zeyad
Keyword(s):  
Mechanical Properties ◽  
Palm Oil ◽  
Concrete Strength ◽  
Tensile Tests ◽  
Uniaxial Tensile ◽  
Cementitious Composite ◽  
Palm Oil Fuel Ash ◽  
Engineered Cementitious Composite ◽  
Fuel Ash ◽  
Oil Fuel

Palm oil fuel ash (POFA) was used to produce engineered cementitious composite (ECC) in this research where ECC mixtures containing different volume of POFA (up to 55% by weight) of cement, were prepared. Mechanical properties of the resulting ECC mixtures were assessed using the compression, flexural and uniaxial tensile tests. The findings of the study show that the use of POFA improves the mechanical properties of the ECCs. The ECC mix with 1.2 POFA/cement ratio achieved a compressive strength of 30 MPa at 28 days, which is within the normal range of concrete strength for many applications. Moreover, the results portray that the use of POFA should be helpful for achieving strain-hardening behaviour. The increase in the POFA content concomitantly increased the flexural deflection and tensile strain capacities of the POFA-ECC. Furthermore, crack width of the ECC was significantly decreased with an increase of POFA content. In addition, the resulting POFA-ECC is expected to enhance the material greenness and durability.

Influence of Silica Fume Inclusion on the Compressive Strength Development of High Strength Concrete Containing High Volume of Palm Oil Fuel Ash

2015 ◽  
Vol 802 ◽  
pp. 214-219 ◽  
Author(s):  
Aktham Hatem Alani ◽  
Megat Azmi Megat Johari
Keyword(s):  
Compressive Strength ◽  
Palm Oil ◽  
High Strength Concrete ◽  
High Strength ◽  
High Volume ◽  
Strength Development ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Compressive Strength Development ◽  
Oil Fuel

The influence of silica fume (SF) inclusion on the compressive strength development of high strength concrete (HSC) containing high volume of palm oil fuel ash (POFA) has been investigated. A HSC containing 100% ordinary Portland cement (OPC) and another HSC mix with 50% POFA as part of the binder were prepared. Due to the reduction in early strength of the HSC with the inclusion of high volume of POFA in the binary blended binder HSC, attempt was made to partially replace the OPC with SF at 5, 10, 15 and 20%, thus creating a ternary blended binder HSC. The results show that the compressive strength development of the HSC containing high volume of POFA was significantly improved with the inclusion of SF. The ternary blended binder HSC with 15% SF exhibited the highest increase in early age strength, even though it did not surpass the OPC-HSC, and it provided the highest strength at 7 and 28 days in comparison to other HSC mixes. Thus, ternary blended binder containing more than 60% supplementary cementitious material (POFA and SF) could be utilized to produce HSC.

Modelling the early strength of alkali-activated cement composites containing palm oil fuel ash

2019 ◽  
Vol 172 (3) ◽  
pp. 133-143 ◽  
Author(s):  
Babatunde Abiodun Salami ◽  
Megat Azmi Megat Johari ◽  
Zainal Arifin Ahmad ◽  
Taoreed Olakunle Owolabi ◽  
Mohammed Maslehuddin ◽  
...  
Keyword(s):  
Palm Oil ◽  
Cement Composites ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Early Strength ◽  
Oil Fuel ◽  
Alkali Activated ◽  
Alkali Activated Cement
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