Abstract This chapter highlights the properties of compressed earth-based masonry block, which covers compression strength, density, water absorption, moisture buffer capacity, shrinkage and thermal conductivity of the compressed earth... more
Abstract This chapter highlights the properties of compressed earth-based masonry block, which covers compression strength, density, water absorption, moisture buffer capacity, shrinkage and thermal conductivity of the compressed earth blocks (CEB). Also, we envision the production of a block that incorporates agro-waste materials such as rice husk ash, palm oil fuel ash and cassava peels to enhance its properties. The importance of the CEB as a sustainable building material for future development is also discussed.
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Research Interests: Materials Science, Pozzolan, Cement, Brick, Calcium Hydroxide, and 4 moreLime, Pozzolana, husk, and Pozzolanic Activity
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KKN adalah kegiatan pengabdian kepada masyarakat berbasis pemberdayaan yang dilakukan oleh mahasiswa. Pada pelaksaan KKN ini dilakukan di Desa Pulau Semikat Dusun II Paya Salit Kecamatan Sirapit Kabupaten Langkat, dimana untuk mengatasi... more
KKN adalah kegiatan pengabdian kepada masyarakat berbasis pemberdayaan yang dilakukan oleh mahasiswa. Pada pelaksaan KKN ini dilakukan di Desa Pulau Semikat Dusun II Paya Salit Kecamatan Sirapit Kabupaten Langkat, dimana untuk mengatasi pencemaran lingkungan yaitu limbah rumah tangga dengan membuat deterjen ramah lingkungan. Deterjen merupakan suatu produk formulasi campuran beberapa bahan kimia, yang bertujuan untuk meningkatkan kemampuan membersihkan. Oleh karena itu penulis ingin membuat deterjen ramah lingkungan dengan bahan yang tidak merusak lingkungan sebagai alternativ bahan yang aman dan ramah lingkungan. Bahan-bahan yang diperlukan untuk pembuatan deterjen ramah lingkungan adalah Sodium Karbonat, Baking Soda, Asam Sitrat, dan Essential Oil. Deterejen ini tidak mengandung bahan-bahan seperti surfaktan (Alkyl Benzene Sulfonate), builder (Phosphates), filler (Sodium Sulfate), dan aditif (Enzyme) yang berbahaya terhadap lingkungan. Dan deterjen ini aman untuk kulit, tidak meru...
Research Interests: Physics and Humanities
RHA has been the subject of investigation for its pozzolanic activity that heavily linked to the controlled temperature burning process in order to achieve amorphous form of silica. This paper present the characterization of RHA that was... more
RHA has been the subject of investigation for its pozzolanic activity that heavily linked to the controlled temperature burning process in order to achieve amorphous form of silica. This paper present the characterization of RHA that was taken directly from the boiler of rice mill with uncontrolled burning temperature. Particle size analysis revealed grinding process of RHA could significantly curb the diameter size and increased specific surface area. Microstructure analysis suggest that RHA is very porous and EDX test showed the chemical content of RHA. The prospect of using uncontrolled burnt RHA as part of construction material is feasible.
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Increasing the utilization of village resource potential is a part that cannot be separated from sustainable agriculture and rural development (Sustainable Agriculture and Rural Development). The various resources found in the village are... more
Increasing the utilization of village resource potential is a part that cannot be separated from sustainable agriculture and rural development (Sustainable Agriculture and Rural Development). The various resources found in the village are production factors to produce a number of agricultural products or commodities. How much the value of the resources used will determine the yield of agricultural commodities both quantitatively and qualitatively. The ability of the village to provide various infrastructure and facilities and utilize the village's potential optimally is largely determined by the village's ability to fulfill funding for village development. The research method is a participatory approach, namely the Participatory Rural Appraisal (PRA) technique. Data analysis was statistically descriptive and qualitative. The potential of Lubuk Kertang village, among others; Resources and agricultural potential of rainfed lowland rice, ponds. potential natural resources of ma...
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Black uncontrolled burnt Rice Husk Ash (RHA) obtained from the boiler of rice mill is a waste product which usually causing air and water pollution. As a waste, RHA has very little value and commercial use. Hence this study examined the... more
Black uncontrolled burnt Rice Husk Ash (RHA) obtained from the boiler of rice mill is a waste product which usually causing air and water pollution. As a waste, RHA has very little value and commercial use. Hence this study examined the pozzolanic potential of RHA as a cement replacement in the Compressed Stabilized Earth Brick (CSEB) production. This is an experiment-based study that characterized the raw materials used to produce CSEB samples. In the characterization of raw materials, the XRD analysis found that the burning temperature of the RHA in the rice mill boiler was around 700-800°C. Pozzolanic assessments on the RHA found that it possesses pozzolanic characteristic within, and conformed to ASTM C 618 – 03. Besides that, this study has also managed to develop a new method of determining the pozzolanicity of RHA using electrical resistivity approach which is more practical than Luxan conductivity method. In term of pozzolanic conductivity, it was found that the RHA has a va...
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Derajat kesehatan pada masyarakat merupakan hal yang paling penting agar menciptakan generasi bangsa yang sukses dan dapat memajukan Indonesia di masa yang akan datang. Penigkatan pengetahuan pola hidup bersih dan sehat sejak dini dengan... more
Derajat kesehatan pada masyarakat merupakan hal yang paling penting agar menciptakan generasi bangsa yang sukses dan dapat memajukan Indonesia di masa yang akan datang. Penigkatan pengetahuan pola hidup bersih dan sehat sejak dini dengan edukasi cara menggosok gigi, melakukan cuci tangan, menggunakan air bersih, pengelolaan sampah organik, serta perilaku gotong royong menjadi metode dalam pengabdian masyarakat ini. Pengabdian ini dilakukan di Desa Galang Suka, dengan hasil yang didapatkan yaitu masyarakat paham dan mengaplikasikan perilaku pola hidup bersih dan sehat di kehidupan sehari-hari sehingga tercapa peningkatan derajat kesehatan. Perilaku hidup bersih dan sehat telah dipahami dan sudah mulai dilakukan dan diaplikasikan pada kehidupan sehari-hari oleh masyarakat Desa Galang Suka.
Research Interests: Physics and Humanities
Salah satu kegiatan KKN di desa Galang Suka, kecamatan Galang, kabupaten Deli Serdang oleh mahasiswa UMSU pada tahun 2019 ini salah satunya adalah untuk memberikan pengetahuan tentang manajemen pembukuan akuntansi untuk UMKM (usaha mikro,... more
Salah satu kegiatan KKN di desa Galang Suka, kecamatan Galang, kabupaten Deli Serdang oleh mahasiswa UMSU pada tahun 2019 ini salah satunya adalah untuk memberikan pengetahuan tentang manajemen pembukuan akuntansi untuk UMKM (usaha mikro, kecil dan menengah) yang tergabung didalam unit UP2K (Usaha Peningkatan Pendapatan Keluarga). Pada umumnya pelaku usaha ini bergerak didalam bidang makanan ringan yang dihasilkan sendiri seperti keripik, kerupuk dan kacang2an. Bahkan ada juga keluarga yang memproduksi bahan dasar untuk usaha makanan ringan tersebut seperti tempe. Pada temuan awal didpati bahwa semua anggota UP2K yang ditemui belum mepunyai pembukuan keuangan usaha yang memadai. Pada kegiatan ini dibuatlah satu bentuk pembukuan keuangan akuntansi untuk usaha sederhana, yang diharapkan setelah kegiatan ini, sistem pembukuan tersebut dapat dipergunakan untuk meningkatkan kinerja manajemen usaha.
Research Interests: Physics and Humanities
The addition of fibers in concrete increases bridging force in interfacial transition zones inside the concrete matrix. Pineapple Leaf Fiber (PALF) is a natural fiber that has the potential to replace artificial fibers as reinforcement on... more
The addition of fibers in concrete increases bridging force in interfacial transition zones inside the concrete matrix. Pineapple Leaf Fiber (PALF) is a natural fiber that has the potential to replace artificial fibers as reinforcement on concrete. As reinforcement fiber in concrete, PALF will undergo fibrillation and water absorption in concrete mixture and will change the mechanical properties of fresh concrete. So, the purpose of this study is to study the workability characteristics of fresh state concrete given PALF. Some variations of PALF composition are 0.04, 0.09, and 0.15 % wt. of cement is mixed into fresh concrete mixture with water-cement (w/c) ratio variations of 0.35, 0.38, and 0.41. The planned concrete is high-strength concrete, then the provisions of determination of coarse and fine aggregates using sieve analysis according to high-strength concrete material standards and concrete mixtures are given superplasticizer 0.09% wt. of cement constantly for all mixtures. ...
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Rice Husk Ash (RHA) as sand replacement and filler of Foamed Concrete (FC) has contributed to increase the strength. FC with RHA has increased the slab resistant of impact loading. When RHA granulate filled the FC porous, it would delay... more
Rice Husk Ash (RHA) as sand replacement and filler of Foamed Concrete (FC) has contributed to increase the strength. FC with RHA has increased the slab resistant of impact loading. When RHA granulate filled the FC porous, it would delay the collapsing of cell porous due to the increasing strain of porous walls. The RHA granulate increased the elasticity of the porous walls of FC. Other than that, the walls porous would be more plastic when it was subjected to compressive stress that generated by impact loading. The impact test conducted an instrument drop-weight impact tower to generate various impact velocities of non-deformable impactor on slab of FC and FC with RHA. Results show that FC with RHA created the crater without fragments. Means while, FC clearly create radial crack and fragments within the crater field. However, both slab materials did not generate spalling nor scabbing upon impact and the influence of porosity produces only local damage due to the mechanism of brittle...
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Fiber concrete has been widely known for its ability to prevent cracks especially micro crack. Natural fiber concrete was one way to accommodate the use of waste natural fibers and at the same time producing sustainable materials. This... more
Fiber concrete has been widely known for its ability to prevent cracks especially micro crack. Natural fiber concrete was one way to accommodate the use of waste natural fibers and at the same time producing sustainable materials. This research tried to examine the workability of Coconut Fiber Concrete (CFC) that incorporated 2% of Coconut Fiber (CF) with Rice Husk Ash (RHA) as a sand replacement with ratio 10, 20 and 30% respectively. Three types of water-cement ratios were used 0.38, 0.41 and 0.44. The result showed that slump value ranging from 3.5 cm and 4 cm. The addition of 20% of RHA resulted in the steady slump value for all water-cement ratio. The CFC is on the same par compare to the steel fiber concrete which incorporated 1.28% fiber.
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Limited natural energy sources give impact on the selection of the material that can subtract energy consumption. Regarding to conservation energy, in the field of building and construction, the selection of concrete with good heat... more
Limited natural energy sources give impact on the selection of the material that can subtract energy consumption. Regarding to conservation energy, in the field of building and construction, the selection of concrete with good heat capacity is a requirement, besides light in weight. The objective of this study was to investigate the thermal conductivity of Foamed Concrete containing Rice Husk Ash (FCRHA). Rice husk ash (RHA) is the type fly ash that can absorb heat due to moisture. RHA The measurement of thermal conductivity on FC and FCRHA was conducted using box insulation and recorded using thermal data logger. The result showed that FCRHA absorb heat from the beginning when the heat is distributed, while FC slow absorp the heat. Modification FC by replacing sand partially with RHA provides an evolution to profitable use of construction materials in the heat absorption.
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Investigation of Rice Husk Ash (RHA) thoroughly under controlled burning is regular issue to obtain result to produce the amorphous silica that has high pozzolanic reactivity characteristic. This paper offered an observation about... more
Investigation of Rice Husk Ash (RHA) thoroughly under controlled burning is regular issue to obtain result to produce the amorphous silica that has high pozzolanic reactivity characteristic. This paper offered an observation about characteristic of ground and un-ground of un-controlled burning temperature RHA that were taken from rice millings in Muar, Johor Malaysia. Such tests as X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), Particle Size Analysis and Specific Area Surface, Fourier Transform Infrared Spectroscopy (FTIR), and Scanning Electron microscope (SEM) were conducted in this investigation to carry out the characteristic of RHA samples. The results show that the RHA was consist approximately 89.90% of silica and the RHA possessed the amorphous particle were dominant than its crystalline part. This proves that the RHA has a big potential as a pozzolanic material considering the silica content and porous structure. In addition, particle size analysis decides whether the pozzolanic reactivity can be increased by grinding process.
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Research Interests: Materials Science, Pozzolan, Cement, Brick, Calcium Hydroxide, and 4 moreLime, Pozzolana, husk, and Pozzolanic Activity
Research Interests:
Research Interests:
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Abstract This chapter highlights the properties of compressed earth-based masonry block, which covers compression strength, density, water absorption, moisture buffer capacity, shrinkage and thermal conductivity of the compressed earth... more
Abstract This chapter highlights the properties of compressed earth-based masonry block, which covers compression strength, density, water absorption, moisture buffer capacity, shrinkage and thermal conductivity of the compressed earth blocks (CEB). Also, we envision the production of a block that incorporates agro-waste materials such as rice husk ash, palm oil fuel ash and cassava peels to enhance its properties. The importance of the CEB as a sustainable building material for future development is also discussed.
Research Interests:
Research Interests:
Compressed Earth Brick (CEB) as building material has many advantages compared to conventional fired clay brick in the view of sustainability, moreover if incorporated uncontrolled burnt RHA waste that usually dumped off since it has no... more
Compressed Earth Brick (CEB) as building material has many advantages compared to conventional fired clay brick in the view of sustainability, moreover if incorporated uncontrolled burnt RHA waste that usually dumped off since it has no commercial value. This paper tried to assess the effect of soil types of clay and laterite in CEB properties which abundantly available in Malaysia. The result showed that the compressive strength of CEB with 20% RHA using clay at 5.5 MPa is better than that of laterite 4.9 MPa, and both exceed that of commercial unfired clay brick from UK.
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Recently, foamed concrete has become a popular construction material that can be used in wide range of constructions application. Whilst the Rice Husk Ash (RHA) as agro-waste is contain high amount of silicon dioxide. RHA is produced in... more
Recently, foamed concrete has become a popular construction material that can be used in wide range of constructions application. Whilst the Rice Husk Ash (RHA) as agro-waste is contain high amount of silicon dioxide. RHA is produced in significant amount every year from agriculture countries. RHA has potential as a material to produce foamed concrete. In this research RHA has been used as a replacement for fine aggregate which used in construction as ordinary concrete material. In this study, foamed concrete with target density 1400, 1600 and 1800 kg/m3 has been produced. The compressive strength of foamed concrete with RHA has been tested. Concrete with Ratio 1:3 of RHA/Sand has higher compressive strength than ratios 3:1 and 2:2 of RHA/sand for every density. XRD and XRF test has been used to determinate chemical composition and crystalline structure of RHA. The result showed that RHA is an amorphous material which amorphous is important thing to pozzolanic process when hydration...
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In relation to the conventional concrete then foamed concrete (FC) is weaker. Therefore FC was added by Rice Husk Ash (RHA) to alter the strength without eliminating its characteristic as aerated concrete. Actually function of RHA is... more
In relation to the conventional concrete then foamed concrete (FC) is weaker. Therefore FC was added by Rice Husk Ash (RHA) to alter the strength without eliminating its characteristic as aerated concrete. Actually function of RHA is substitute the sand partly. The strength of concrete affects to prevent the dynamic impact loading. However FC as aerated concrete can absorb energy impact by its porosity. Both of characteristics were presented in this investigation. SEM and EDS detected that pozzolanic reaction was done when FC was processing hydration of cement in admixture. The presence of RHA increased the strength of concrete owing to cement hydration process and pozzolanic reactivity of RHA. The result of impact loading on slab FC target displayed that FC with RHA was more shallow than without RHA. Beside of that local damage showed that FC with RHA denser and is not impression of fragments than FC without RHA.
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Foamed concrete as aerated concrete widely used in range of constructions application, no exception to structure shield. As structure shield is important to resist on impact loading. Whilst, Rice Husk Ash (RHA) as agro-waste potentials as... more
Foamed concrete as aerated concrete widely used in range of constructions application, no exception to structure shield. As structure shield is important to resist on impact loading. Whilst, Rice Husk Ash (RHA) as agro-waste potentials as filler for foamed concrete. RHA that is produced by uncontrolled burning under 700oC during ± 6 hours obtain the granules contain the carbon and porous. The granules of RHA may fill the porous in matrix foamed concrete without remove the characteristic the foamed concrete its self-as aerated concrete. This investigation RHA has been used as a replacement for fine aggregate. Target density 1800 kg/m3of foamed concrete both of with and without RHA have been produced to compare their strength and characteristic of impact resistance. SEM and EDS test has been conducted to determine microstructure and chemical composition of foamed concrete with RHA. The results showed that granules of RHA filled the porous and bonded with the denser part into matrix. T...
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... guidance. I extend my gratitude to my second supervisor En. Mustafa Abdullah Al Bakri for his support and encouragement. ... I am grateful to my husband Josef Hadipramana and my childrenFadhilah Athhar Fauzi Avicenna and Fatharani... more
... guidance. I extend my gratitude to my second supervisor En. Mustafa Abdullah Al Bakri for his support and encouragement. ... I am grateful to my husband Josef Hadipramana and my childrenFadhilah Athhar Fauzi Avicenna and Fatharani Mazaya Azka for their ...
Assessment of pozzolanic reactivity is commonly based on a direct and indirect method which mostly used the electrical conductivity method. However,these methodsare limited by long-duration requirements or need to be done in the... more
Assessment of pozzolanic reactivity is commonly based on a direct and indirect method which mostly used the electrical conductivity method. However,these methodsare limited by long-duration requirements or need to be done in the laboratory. By modifying the sandbox test to measure the electrical resistivity of Rice Husk Ash (RHA) as pozzolan, this investigation tries to offer a simpler method that can be done in situ. The RHA was heated in the oven with several temperatures varying from 100C to 600C and tested for its electrical resistivity by mixing it with laboratory-gradelime. The value of electrical resistivity is then compared with the value of the Luxan method by using the same materials. The results showed a similar trend with the electrical conductivity method. Hence new pozzolanic classification was proposed in linewith this new pozzolanic assessment.