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

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.

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

Jurnal Teknologi ◽

10.11113/jt.v77.6391 ◽

2015 ◽

Vol 77 (16) ◽

Cited By ~ 1

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.

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

Jurnal Teknologi ◽

10.11113/jt.v78.8346 ◽

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.

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

Jurnal Teknologi ◽

10.11113/jt.v78.8348 ◽

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.

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

Jurnal Teknologi ◽

10.11113/jt.v78.8354 ◽

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.

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Lightweight Mortar Incorporating Various Percentages of Waste Materials

Jurnal Teknologi ◽

10.11113/jt.v67.2769 ◽

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.

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Incorporation of Palm Oil Fuel Ash and Egg shell Powder as Supplementary Cementitious Materials in Sustainable Foamed Concrete

Tehnicki vjesnik - Technical Gazette ◽

10.17559/tv-20190326112511 ◽

2020 ◽

Vol 27 (5) ◽

Cited By ~ 1

Keyword(s):

Palm Oil ◽

Cementitious Materials ◽

Supplementary Cementitious Materials ◽

Palm Oil Fuel Ash ◽

Fuel Ash ◽

Foamed Concrete ◽

Egg Shell ◽

Oil Fuel ◽

Shell Powder

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Mechanical and thermal properties of prepacked aggregate concrete incorporating palm oil fuel ash

Sadhana ◽

10.1007/s12046-016-0549-9 ◽

2016 ◽

Vol 41 (10) ◽

pp. 1235-1244 ◽

Cited By ~ 21

Author(s):

Hossein Mohammadhosseini ◽

A S M Abdul Awal ◽

Abdul Rahman Mohd Sam

Keyword(s):

Thermal Properties ◽

Palm Oil ◽

Mechanical And Thermal Properties ◽

Palm Oil Fuel Ash ◽

Aggregate Concrete ◽

Fuel Ash ◽

Oil Fuel

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Chemical and Fresh State Properties of Foamed Concrete Incorporating Palm Oil Fuel Ash and Eggshell Ash as Cement Replacement

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i4.30.22307 ◽

2018 ◽

Vol 7 (4.30) ◽

pp. 350 ◽

Cited By ~ 4

Author(s):

Sufian Kamaruddin ◽

Wan Inn Goh ◽

Ashfaque Ahmed Jhatial ◽

Muhammad Tahir Lakhiar

Keyword(s):

Palm Oil ◽

Waste Materials ◽

Palm Oil Fuel Ash ◽

Cement Replacement ◽

Fuel Ash ◽

Fresh State ◽

Foamed Concrete ◽

Chemical Analysis Result ◽

Carbon Dioxide Co2 ◽

Oil Fuel

Malaysia faces three major environmental problems, out of which solid waste and management is one of them. Palm Oil Fuel Ash (POFA) and eggshells are two agro-food waste materials which are produced in enormous quantities in Malaysia. Due to the characteristics possessed by eggshells and POFA, these waste materials can potentially be utilized in the production as cement replacement, reducing the use of cement which is one of the major production of Carbon Dioxide (CO2) gas emissions. This study was conducted to determine the chemical and fresh state properties of foamed concrete incorporating POFA and eggshell ash (ESA) as cement replacement. Based upon the results, it was observed that the increase in usage amount of POFA and ESA as cement replacement, the workability of foamed concrete reduced without blocking. For the chemical analysis result shows the POFA which had high amount of silicon dioxide and ESA having large amount of calcium oxide were compatible and could be used together as cement replacement. The use of ESA and POFA as cement replacement to reduce the cement consumption with various percentage of ESA (0% - 15%) and POFA (20% - 35%) in 1800 kg/m3 density of foamed concrete.

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