POTENTIAL OF NATURAL AND SYNTHETIC FIBRES ON FLEXURAL PERFORMANCE OF FOAMCRETE MORTAR

2016 ◽  
Vol 78 (5) ◽  
Author(s):  
Md Azree Othuman Mydin
Keyword(s):  
Flexural Strength ◽  
Control Sample ◽  
Cellulose Content ◽  
Palm Oil Fuel Ash ◽  
Coir Fibre ◽  
Fuel Ash ◽  
Pulverized Fuel ◽  
Coconut Fibre ◽  
Oil Fuel ◽  
Natural And Synthetic

This research investigates the potential of natural and synthetic fibres on flexural strength of foamcrete mortar. The are 7 different types of fibres had been used such as pulverized fuel ash, wood ash, silica fume, palm oil fuel ash, polypropylene fibre, coconut fibre and steel fibre. These natural and synthetic additives have different abilities that contribute positive outcomes to the properties of foamcrete mortar. Pozzolanic materials and fibres were used as additives to be included with control foamcrete mortar mixtures in order to enhance its flexural properties. From the overall analysis, it has been confirmed that coir fibre recorded the highest flexural strength in 7 days compared to other additives and the control sample. Coir fibre of 0.4% reached highest strength in 180 days without allowing other additives to overcome its overall flexural strength. It should be pointed out that, the more the addition of fibres in the base mix, the higher the strength obtained due to its low cellulose content.

EXPERIMENTAL INVESTIGATION OF AXIAL COMPRESSIVE STRENGTH OF LIGHTWEIGHT FOAMED CONCRETE WITH DIFFERENT ADDITIVES

2016 ◽  
Vol 78 (5) ◽  
Author(s):  
M. A. Othuman Mydin
Keyword(s):  
Compressive Strength ◽  
Large Diameter ◽  
Control Sample ◽  
Cellulose Content ◽  
Palm Oil Fuel Ash ◽  
Coir Fibre ◽  
Fuel Ash ◽  
Foamed Concrete ◽  
Axial Compressive Strength ◽  
Oil Fuel

This paper focuses on experimental study to investigate the effects of different additives on axial compressive strength of lightweight foamed concrete (LFC). The additives used are pulverized fuel ash, wood ash, silica fume, palm oil fuel ash, polypropylene fibre, coconut fibre and steel fibre. These additives have different abilities that contribute positive outcomes to the properties of LFC. Pozzolanic materials and fibres were used as additives to be associated with plain LFC mixtures to improve its mechanical properties. Coir fibre recorded the highest compressive strength in 7 days compared to other additives and the control sample. Coir fibre of 0.4% (CF 0.4) reached highest strength in 180 days without allowing other additives to overcome its strength. The more the inclusion of fibres, the higher the strength obtained due to its low cellulose content, and high percentage and large diameter of lignin. The short length fibres hold the particles stronger.

EVALUATION OF SPLITTING TENSILE STRENGTH IN PLAIN AND FIBRE-REINFORCED FOAMED MORTAR

2016 ◽  
Vol 78 (5) ◽  
Author(s):  
M. A. Othuman Mydin
Keyword(s):  
Tensile Strength ◽  
Tensile Force ◽  
Splitting Tensile Strength ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Different Types ◽  
Pulverized Fuel ◽  
Pulverized Fuel Ash ◽  
Coconut Fibre ◽  
Oil Fuel

Splitting tensile strength of concrete is normally low compared to compressive and flexural strength. Tensile force was used in the design of structural foamed mortar and to evaluate the shear resistance provided by concrete. This research focuses on the splitting tensile strength of foamed mortar incorporated with 7 different types of fibres used such as wood ash, pulverized fuel ash, silica fume, palm oil fuel ash, polypropylene fibre, coconut fibre and steel fibre. The findings show that the amount of fibres influences the enhancement level of the tensile strength. A high percentage of fibre can create a strong bonding between the particles of the foamed mortar, thus it is able to absorb energy to resist crack formation.

scholarly journals Thermal Properties of Foamed Concrete with Various Densities and Additives at Ambient Temperature

2015 ◽  
Vol 747 ◽  
pp. 230-233 ◽  
Author(s):  
Shankar Ganesan ◽  
Md Azree Othuman Mydin ◽  
Mohd Yazid Mohd Yunos ◽  
Mohd Nasrun Mohd Nawi
Keyword(s):  
Thermal Properties ◽  
High Heat ◽  
Thermal Constant ◽  
Palm Oil Fuel Ash ◽  
Coir Fibre ◽  
Fuel Ash ◽  
Pulverized Fuel ◽  
Foamed Concrete ◽  
Pulverized Fuel Ash ◽  
Oil Fuel

This paper will focus on experimental investigation to observe the effects of different densities and additives on the thermal properties of foamed concrete by means of Hot Disk Thermal Constant Analyzer, so as to obtain a few fundamental thermal properties for prediction of its fire resistance performance. For this study, samples of three different densities of 700kg/m3, 1000kg/m3 and 1400kg/m3 and various additives were investigated to study the effects of densities and additives on the thermal properties of foamed concrete. The additives used in this research were pulverized fuel ash (PFA), silica fume, palm oil fuel ash (POFA), wood ash, polypropylene fibre, steel fibre and coir fibre. It should be pointed out that the lowest density of foamed concrete (700kg/m3) has provided best thermal insulation properties due to large amount of pores and high percentage of air entrapped because air is poorest conductor of heat than solid and liquid. Also, foamed concrete with coir fibre achieved lowest thermal conductivity because it possess high heat resistance due to its large percentage of hemicellulose and lignin and exhibited high heat capacity as well due to the formation of uniform pores and voids in foamed concrete.

EFFECT OF CERAMIC AGGREGATE ON HIGH STRENGTH MULTI BLENDED ASH GEOPOLYMER MORTAR

2015 ◽  
Vol 77 (16) ◽  
Author(s):  
Mohd Azreen Ariffin ◽  
Mohd Warid Hussin ◽  
Mostafa Samadi ◽  
Nor Hasanah Abdul Shukor Lim ◽  
Jahangir Mirza ◽  
...  
Keyword(s):  
Alkaline Solution ◽  
High Strength ◽  
Fine Aggregate ◽  
Palm Oil Fuel Ash ◽  
Viable Solution ◽  
Fuel Ash ◽  
Pulverized Fuel ◽  
Alumino Silicate ◽  
Pulverized Fuel Ash ◽  
Oil Fuel

Geopolymer is a type of amorphous alumino-silicate cementitious material, synthesized by the reaction of an alumina-silicate powder with an alkaline solution. The geopolymer technology has recently attracted increasing attention as a viable solution to reuse and recycle industrial solid wastes and by-products. This paper discusses the performance of geopolymer mortar comprises of multiple blended ash of palm oil fuel ash (POFA), pulverized fuel ash (PFA) and ground granulated blast furnace slag (GGBFS) by replacing ordinary Portland cement. Fine aggregate obtained from the ceramic waste was used to partially replace normal sand in the mixture. The concentration of alkaline solution used was 14 Molar. The fresh mortar was cast in 50x50x50 mm cubes geopolymer mortar specimens and cured at ambient temperature for 24 hours. The effects of mass ratios of alkaline solution to multiple blended ashes and percentage of ceramic aggregate as sand replacement on compressive, flexural and tensile strength of mortar were examined. The results revealed that as the multi blended ash (GGBFS: PFA: POFA) mass ratio increased, the compressive strength of geopolymer mortar is increased with regards to the ceramic aggregate properties.

scholarly journals Drying Shrinkage, Sulphuric Acid and Sulphate Resistance of High-Volume Palm Oil Fuel Ash-Included Alkali-Activated Mortars

2022 ◽  
Vol 14 (1) ◽  
pp. 498
Author(s):  
Ghasan Fahim Huseien ◽  
Mohammad Ali Asaad ◽  
Aref A. Abadel ◽  
Sib Krishna Ghoshal ◽  
Hussein K. Hamzah ◽  
...  
Keyword(s):  
Sulphuric Acid ◽  
Palm Oil ◽  
Control Sample ◽  
Drying Shrinkage ◽  
High Volume ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Oil Fuel ◽  
Durability Performance ◽  
Alkali Activated

Nowadays, an alkali-activated binder has become an emergent sustainable construction material as an alternative to traditional cement and geopolymer binders. However, high drying shrinkage and low durability performance in aggressive environments such as sulphuric acid and sulphate are the main problems of alkali-activated paste, mortar and concrete. Based on these factors, alkali-activated mortar (AAM) binders incorporating high-volume palm oil fuel ash (POFA), ground blast furnace slag (GBFS) and fly ash (FA) were designed to enhance their durability performance against aggressive environments. The compressive strength, drying shrinkage, loss in strength and weight, as well as the microstructures of these AAMs were evaluated after exposure to acid and sulphate solutions. Mortars made with a high volume of POFA showed an improved durability performance with reduced drying shrinkage compared to the control sample. Regarding the resistance against aggressive environments, AAMs with POFA content increasing from 0 to 70% showed a reduced loss in strength from 35 to 9% when subjected to an acid attack, respectively. Additionally, the results indicated that high-volume POFA binders with an increasing FA content as a GBFS replacement could improve the performance of the proposed mortars in terms of durability. It is asserted that POFA can significantly contribute to the cement-free industry, thus mitigating environmental problems such as carbon dioxide emission and landfill risks. Furthermore, the use of POFA can increase the lifespan of construction materials through a reduction in the deterioration resulting from shrinkage problems and aggressive environment attacks.

INCORPORATION OF HOMOGENOUS CERAMIC TILE WASTE TO ENHANCE MECHANICAL PROPERTIES OF MORTAR

2015 ◽  
Vol 77 (16) ◽  
Author(s):  
Abdul Rahman Mohd Sam ◽  
Mostafa Samadi ◽  
Mohd Warid Hussin ◽  
Han Seung Lee ◽  
Mohamed A. Ismail ◽  
...  
Keyword(s):  
Ceramic Tile ◽  
Agricultural Waste ◽  
Control Sample ◽  
Ceramic Materials ◽  
Sustainable Construction ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Innovative Materials ◽  
Brick And Tile ◽  
Oil Fuel

Reduction, reuse and recycle of industrial and agricultural waste materials are regarded as very important to provide sustainable construction. The by-products such as fly ash, silica fume, slag and palm oil fuel ash, etc., have been studied for the past few decades and the findings are very well accepted as new innovative materials in construction. Currently, ceramic materials are widely used in many parts of the world. Consequently a large quantities of wastes are produced simultaneously by brick and tile manufacturers and from construction industry. Most of these wastes are dumped in landfills that cause environmental problem. In the present research the effect of homogeneous ceramic tile waste as sand replacement was investigated on the harden properties of mortar. The tests conducted under laboratory ambient condition were compressive and splitting tensile strengths. The percentage replacement of sand by ceramic aggregate by weight was in the range of 0% to 100%. The size of ceramic aggregate used is modified in accordance to ASTM C33-13. All samples were cast in a 50mm cube and cured in water until the age of testing. The results showed that the compressive strength values of the control sample and 100% ceramic aggregate as sand replacement at the age of 7days were 41.9 MPa and 40.9 MPa, respectively; almost similar. In addition, the splitting tensile strength of the mortar sample with 100% ceramic aggregate was found to be 6% higher than the control sample.  Thus, the homogenous ceramic tile waste can not only be used as sand replacement for normal application in mortar mix but also to enhance its hardened properties.

scholarly journals Preliminary Investigation of Thermal Behavior of Lightweight Foamed Concrete Incorporating Palm Oil Fuel Ash and Eggshell Powder

2020 ◽  
Author(s):  
Ashfaque Ahmed Jhatial ◽  
Wan Inn Goh ◽  
Samiullah Sohu ◽  
Sajjad Ali Mangi ◽  
Aamir Khan Mastoi
Keyword(s):  
Palm Oil ◽  
Control Sample ◽  
Supplementary Cementitious Materials ◽  
Dry Density ◽  
Palm Oil Fuel Ash ◽  
Thermal Insulating ◽  
Structural Applications ◽  
Fuel Ash ◽  
Foamed Concrete ◽  
Oil Fuel

This study was performed to investigate the thermal and mechanical properties of foamed concrete when supplementary cementitious materials (SCMs) are utilized. Sustainable foamed concrete of 1800 kg/m3 dry density was prepared by incorporating Palm Oil Fuel Ash (POFA) ranging from 30 % to 35 % and Eggshell Powder (ESP) from 5 % to 15 % as SCMs. It was found that the combined utilization of POFA and ESP in the foamed concrete produced favorable results by reducing the thermal conductivity up to 42.68 % compared to the control sample, thus enhanced thermal insulating property of foamed concrete. This study confirmed that recycling and reusing of POFA and ESP are possible in foamed concrete which could be used for non-structural applications where thermal insulating is required.

scholarly journals Binary Effect of Fly Ash and Palm Oil Fuel Ash on Heat of Hydration Aerated Concrete

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Taha Mehmannavaz ◽  
Mohammad Ismail ◽  
Salihuddin Radin Sumadi ◽  
Muhammad Aamer Rafique Bhutta ◽  
Mostafa Samadi ◽  
...  
Keyword(s):  
Portland Cement ◽  
Palm Oil ◽  
Control Sample ◽  
Heat Of Hydration ◽  
Type I ◽  
Mass Concrete ◽  
Palm Oil Fuel Ash ◽  
Fuel Ash ◽  
Aerated Concrete ◽  
Oil Fuel

The binary effect of pulverized fuel ash (PFA) and palm oil fuel ash (POFA) on heat of hydration of aerated concrete was studied. Three aerated concrete mixes were prepared, namely, concrete containing 100% ordinary Portland cement (control sample or Type I), binary concrete made from 50% POFA (Type II), and ternary concrete containing 30% POFA and 20% PFA (Type III). It is found that the temperature increases due to heat of hydration through all the concrete specimens especially in the control sample. However, the total temperature rises caused by the heat of hydration through both of the new binary and ternary concrete were significantly lower than the control sample. The obtained results reveal that the replacement of Portland cement with binary and ternary materials is beneficial, particularly for mass concrete where thermal cracking due to extreme heat rise is of great concern.

Lightweight Mortar Incorporating Various Percentages of Waste Materials

2014 ◽  
Vol 67 (3) ◽  
Author(s):  
Taha Mehmannavaz ◽  
Mohammad Ismail ◽  
Salihuddin Radin Sumadi ◽  
Mostafa Samadi ◽  
Seyed Mahdi Sajjadi
Keyword(s):  
Strength Development ◽  
Palm Oil Fuel Ash ◽  
Cement Replacement ◽  
Fuel Ash ◽  
Pulverized Fuel ◽  
Aerated Concrete ◽  
Pulverized Fuel Ash ◽  
Partial Cement Replacement ◽  
Oil Fuel ◽  
Curing Regime

The experimental study evaluated the performance of lightweight aerated concrete incorporating various percentages of palm oil fuel ash (POFA) and pulverized fuel ash (PFA) as partial cement replacement. Performance evaluation of the aerated concrete was investigated with respect to ultimate compressive strength, density and strength development. Twelve mixes are developed and tested at different periods, i.e. 3, 7and 28 days. In this work, two different curing regime namely air curing and water curing were used to monitor the effect of the curing regime. The results show that the mixtures produced by replacing cement with POFA and PFA were comparable to the mix without cement replacement. Furthermore, this investigation observed that the cement-POFA-PFA based lightweight aerated concrete can be produced as lightweight non-load bearing concrete units, because hazard of ashes (POFA & PFA) might be a serious issue for human health. Disposal of ashes contributes the shortage of landfill space in all the worlds, especially in Malaysia.  

scholarly journals Effect of Curing Method on Concrete with Palm Oil Fuel Ash as a Cement Replacement

2018 ◽  
Vol 7 (3.36) ◽  
pp. 68 ◽  
Author(s):  
Wael Elleithy ◽  
Chin Chee Fung ◽  
Jayaprakash Jaganathan ◽  
Teck Leong Lau ◽  
Mohammed Parvez Anwar
Keyword(s):  
Flexural Strength ◽  
Palm Oil ◽  
Experimental Program ◽  
Palm Oil Fuel Ash ◽  
Cement Replacement ◽  
Fuel Ash ◽  
Curing Methods ◽  
Water Curing ◽  
Curing Method ◽  
Oil Fuel

In this paper, the effect of different curing methods on the strength of concrete with palm oil fuel ash as a cement replacement is investigated. An experimental program was carried out to study the effect of five different curing methods, i.e., water curing (WC), air curing (AC), plastic-wrapped curing (PC), oven and water curing (OWC), and oven and air curing (OAC), on the compressive and flexural strengths of palm oil fuel ash concrete (POFA20), where 20% of the cement was replaced by palm oil fuel ash. The results obtained from this investigation showed that POFA20-WC has the highest compressive and flexural strength, whilst POFA20-AC has the lowest at the age of 28 days. Both of the POFA20-OWC and POFA20-OAC have the highest compressive and flexural strength at the age of 3 days. The results emphasize the positive effect of oven curing procedure to achieve high compressive and flexural strength at early stage. However, the rate of hydration started to decrease at later stages, which leads to much lower rate of gaining strength in POFA20-OWC and POFA20-OAC. Water curing method is thus recommended in the construction industry except for extraordinary requirements and/or circumstances.   

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