Thermal Properties of Oil Palm Shell Lightweight Concrete with Different Mix Designs

2014 ◽  
Vol 70 (1) ◽  
Author(s):  
Eravan Serri ◽  
Md Azree Othuman Mydin ◽  
Mohd Zailan Suleiman
Keyword(s):  
Thermal Conductivity ◽  
Oil Palm ◽  
Lightweight Concrete ◽  
Waste Product ◽  
Lightweight Aggregate ◽  
Strong Relationship ◽  
Unit Weight ◽  
Insulation Material ◽  
Palm Shell ◽  
Oil Palm Shell

Nowadays, the utilization of Oil Palm Shell (OPS) as lightweight aggregate in concrete especially in the structure application has become prevalent. As an industrial waste product, Oil Palm Shell (OPS) possibly will be the alternative material to be employed in the construction industry. With its advantage as heat resistant material, this study will focus on the potential of OPS as lightweight aggregate with regard to the optimum content of OPS for thermal insulating material. A total of 15 mixes were prepared and tested with 3 different cement/sand ratios (1.7, 1.8, 1.9) and 5 different cement contents (300, 350, 400, 450, 500 kg/m³). The result of this study show that the highest sand used will produced good workability but increased thermal conductivity of mix value. The test result indicates that the thermal conductivity and insulation criterion is substantially improved with the volume use of OPS and strong relationship between thermal conductivity and unit weight is obtained. The measured thermal conductivity value range from 0.54W/mC to 1.1 W/mC. The ideal value for semi structure insulation material establish by RILEM only  achieve for mix that used cement content 400 kg/m³ and below, which thermal conductivity is 0.75 W/mC below.  

Durability Performance of Oil Palm Shell Lightweight Concrete as Insulation Concrete

2015 ◽  
Vol 747 ◽  
pp. 217-220
Author(s):  
Eravan Serri ◽  
Mohd Zailan Sulieman ◽  
Md Azree Othuman Mydin
Keyword(s):  
Thermal Conductivity ◽  
Oil Palm ◽  
Lightweight Concrete ◽  
Volume Fraction ◽  
Strong Relationship ◽  
Air Permeability ◽  
Concrete Category ◽  
Palm Shell ◽  
Oil Palm Shell ◽  
Durability Performance

This paper presents a solid agricultural solid waste, namely oil palm shell (OPS) as coarse aggregate to produce insulation concrete. This study will investigate the porosity, air permeability and thermal conductivity of OPS lightweight concrete (OPSLC). Nine mix designs were developed which comprised three OPS shapes and three volume fractions of OPS. The results indicated that increased volume fraction of OPS caused decreased durability performance and thermal conductivity. The shape of OPS is found to have significant effects to the porosity content and air permeability values. Thus, there is a strong relationship between porosity content and air permeability for all specimens. Based on the results, all specimens are found to be in the range of insulation concrete category except for specimen C-30, which has more than 0.75W/mK thermal conductivity according to RILEM requirement. The thermal conductivity of OPSLC is comparable with artificial lightweight aggregate.

scholarly journals Optimum Oil Palm Shell Content as Coarse Aggregate in Concrete Based on Mechanical and Durability Properties

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Mehdi Maghfouri ◽  
Payam Shafigh ◽  
Muhammad Aslam
Keyword(s):  
Oil Palm ◽  
Coarse Aggregate ◽  
Lightweight Concrete ◽  
Drying Shrinkage ◽  
Lightweight Aggregate ◽  
High Strength ◽  
Normal Weight ◽  
Concrete Mixture ◽  
Palm Shell ◽  
Oil Palm Shell

Oil palm shell (OPS) is a biosolid waste in palm oil industry in the tropical countries which could be used as aggregate in concrete mixture. Since 1984, OPS has been experimented as natural lightweight aggregate in research studies to produce lightweight concrete (LWC). Medium and high-strength LWCs using OPS as coarse aggregate were successfully produced. However, higher drying shrinkage and lower mechanical properties for concretes containing higher volume of OPS are reported in previous studies. Therefore, OPS is not fit to be used as full coarse aggregate in concrete mixture and therefore, there should be an optimum OPS content in concrete. In this study, in a normal-weight concrete, normal coarse aggregate was replaced with OPS from zero to 100% with an interval of 20%. Tests such as slump, density, compressive strength in different curing conditions, splitting tensile strength, initial and final water absorptions, and drying shrinkage of cured and uncured specimens were conducted to find out optimum OPS content in concrete. From the test results, it could be summarized that OPS content should not exceed 60% of total volume of coarse aggregate.

DURABILITY PERFORMANCE OF OIL PALM SHELL LIGHTWEIGHT CONCRETE FOR INSULATION BUILDING MATERIAL

2016 ◽  
Vol 78 (5) ◽  
Author(s):  
Eravan Serri ◽  
Mohd Zailan Suleiman ◽  
Roslan Talib ◽  
Mahyuddin Ramli
Keyword(s):  
Thermal Conductivity ◽  
Water Absorption ◽  
Oil Palm ◽  
Lightweight Concrete ◽  
Volume Fraction ◽  
Cement Matrix ◽  
Void Content ◽  
Palm Shell ◽  
Oil Palm Shell ◽  
Durability Performance

The advantage of oil palm shell (OPS) as coarse aggregate in concrete can be extended to insulation concrete capacity. Thus, this paper will explain the durability of oil palm shell lightweight concrete (OPSLC) for insulation concrete capacity in building. Nine mix designs were developed containing high volume of OPS, which is 30, 32 and 34% from total volume of concrete with three different OPS shapes (raw, crushed and partly crushed). The water absorption and drying shrinkage were examined; besides, thermal conductivity testing that was conducted for confirmation as insulation concrete category.  The observation of all the specimens lasted one year for durability performance test and 28 days for thermal conductivity value. The highest water absorption value is 43% from previous study that was designed for structural concrete. Higher OPS volume fraction produced higher air void content and caused water loss and increase of the hydration effects on OPSLC shrinkage. It also affected the microstructure conditions, especially specimens that used 34% of OPS volume fraction which show weak interface bond in cement matrix.

scholarly journals Mechanical and Thermal Properties of Synthetic Polypropylene Fiber–Reinforced Renewable Oil Palm Shell Lightweight Concrete

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2337
Author(s):  
Leong Tatt Loh ◽  
Ming Kun Yew ◽  
Ming Chian Yew ◽  
Jing Han Beh ◽  
Foo Wei Lee ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Oil Palm ◽  
Lightweight Concrete ◽  
Polypropylene Fiber ◽  
Extraction Process ◽  
Mechanical And Thermal Properties ◽  
Time Saving ◽  
Palm Shell ◽  
Oil Palm Shell

Oil palm shell (OPS) is an agricultural solid waste from the extraction process of palm oil. All these wastes from industry pose serious disposal issues for the environment. This research aims to promote the replacement of conventional coarse aggregates with eco-friendly OPS aggregate which offers several advantages, such as being lightweight, renewable, and domestically available. This paper evaluates the mechanical and thermal performances of renewable OPS lightweight concrete (LWC) reinforced with various type of synthetic polypropylene (SPP) fibers. Monofilament polypropylene (MPS) and barchip polypropylene straight (BPS) were added to concrete at different volume fractions (singly and hybrid) of 0%, 0.1%, 0.3% and 0.4%. All specimens were mixed by using a new mixing method with a time saving of up to 14.3% compared to conventional mixing methods. The effects of SPP fibers on the mechanical properties were investigated by compressive strength, splitting tensile strength and residual strength. The strength of the oil palm shell lightweight concrete hybrid 0.4% (OPSLWC–HYB–0.4%) mixture achieved the highest compressive strength of 29 MPa at 28 days. The inclusion of 0.3% of BPS showed a positive outcome with the lowest thermal conductivity value at 0.55 W/m °C. Therefore, the results revealed that incorporation of BPS fiber enhanced the performance of thermal conductivity tests as compared to inclusion of MPS fiber. Hence, renewable OPS LWC was proven to be a highly recommended environmentally friendly aggregate as an alternative solution to replace natural aggregates used in the concrete industry.

The Effects of Oil Palm Shell Aggregate Shape on the Thermal Properties and Density of Concrete

2014 ◽  
Vol 935 ◽  
pp. 172-175 ◽  
Author(s):  
Eravan Serri ◽  
M. Zailan Suleiman ◽  
M. Azree Othuman Mydin
Keyword(s):  
Thermal Conductivity ◽  
Thermal Properties ◽  
Thermal Diffusivity ◽  
Specific Heat ◽  
Oil Palm ◽  
Dry Density ◽  
Insulation Material ◽  
High Porosity ◽  
Palm Shell ◽  
Oil Palm Shell

Oil Palm Shell (OPS) are one of low thermal conductivity course aggregate for lightweight concrete. This paper report on all thermal properties parameter, thermal conductivity, specific heat and thermal diffusivity. Tree mixes of OPS of air dry density 1733 to 1811 kg/m3 and oven dry density 1502 to 1632 kg/m3 were prepaid and tested for thermal properties and compared with normal concrete using crushed granite as control and conventional materials. Raw shape with air density 1733 kg/m3 showed the lowest thermal properties with thermal conductivity, specific heat and thermal diffusivity of 0.59 W/mK, 1.352 MJ/m3K and 0.4414 mm2/s, respectively. All OPS mix can be consider as semi structure insulation material as per the RILEM classification which is thermal conductivity lower than 0.75 W/mK. High porosity content in concrete created act as an insulation characteristic and showed OPS have good potential as green insulation materials.

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