scholarly journals PENENTUAN SIFAT MEKANIS DAN FISIS BATU BATA DENGAN PENAMBAHAN ARANG TEMPURUNG KELAPA ASAL ALOR

2018 ◽  
Vol 3 (1) ◽  
pp. 80-85
Author(s):  
Ernawati Kawa ◽  
Minsyahril Bukit ◽  
Albert Zicko Johannes
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Compression Strength ◽  
Physical And Mechanical Properties ◽  
Strength Test ◽  
Coconut Shell ◽  
Mechanical And Physical Properties ◽  
Maximum Limit

Abstrak Telah dilakukan penelitian tentang penentuan sifat mekanis dan fisis batu bata dengan penambahan tempurung kelapa asal alor. Penenlitian ini bertujuan mengetahui kualitas batu bata yang memenuhi standar kelayakan sebagai bahan konstruksi dengan penambahan arang tempurung kelapa aal alor dengan presentasi 0%, 5%, 10%, 15% terhadap tanah liat (lempung). Batu bata dicetak dengan prosedur pemadatan, pengringn dan pembakaran. Setelah prosedur pencetakkan selesai kemudian di lanjutkan dengan pengujian sefat mekanis dan sifat fisis, yaitu uji kuat tekan (compression strength), densitas (density), porositas (porosity) hasil  kuat tekan batu bata didapatkan berdasarkan pengujian: a) uji kuat tekan, batu bata tanpa penambahan (0%) : 4,94 meemenuhi standar kuat tekan kelas 50 (SNI 15-2094-2000), b) uji porositas, batu bata 0% dan 5% : 3,82% dan 17,93% memenuhi standar porositas dengan batas maksimum 20% (SNI 15-2094-2000) dan uji densitas, batu bata tidak ada yang memenuhi standar (SII 0021-1978) Kata kunci: sifat mekanis, sifat fisis, tempurung kelapa, densitas, porositas, kuat tekan Abstract A research had been conducted to determine physical and mechanical properties of the bricks with the addition coconut shell charcoal from alor. This research aims at the quality of the bricks to meet the standars of eligibility as a contruction material. The addition of coconut shell charcoal is variate with the presentage 0%, 5%, 10%, 15% to the clay mass. The brick being printed with procedure compaction, drying, and baking. After the printing procedure is done then next is testing the mechanical and physical properties, that is compression strength test, density test, and porosity test. The brick quality result is obtained based on the test: a) compression strength test, the brick without addition (0%) : 4,94  (SNI 15-2094-2000) is comply with the standard compression strength the class 50 , b) porosity test, the brick 0% and 5% (3,82% and 17,93%) meet the standard with the maximum limit 20% ( SNI 15-2094-2000)  , and c) density test, every bricks does not meet the standard (SII 0021- 1978). Keywords: mechanical properties, physical properties, coconut shell, density, porosity, compression strength

PEMANFAATAN KAYU AKASIA MANGIUM (Acacia mangium Willd) UNTUK MEBEL

2012 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Djoko Purwanto
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Physical Properties ◽  
Treatment Process ◽  
Acacia Mangium ◽  
Physical And Mechanical Properties ◽  
Wood Fibers ◽  
Test Parameters ◽  
Mechanical And Physical Properties ◽  
Scale Scores

Timber Acacia mangium (Acacia mangium, Willd) for Furniture. The study aims to determine the mechanical and physical properties and the decorative value (color and fiber) wood of acacia mangium with using finishing materials. This type of finishing material used is ultran lasur natural dof ,ultran lasur classic teak, aqua politur clear dof, aqua politur akasia dan aqua politur cherry. After finishing the wood is stored for 3 months. Test parameters were observed, namely, physical and mechanical properties of wood, adhesion of finishing materials, color and appearance of the fiber, and timber dimensions expansion. The results showed that the mechanical physical properties of acacia wood qualified SNI. 01-0608-89 about the physical and mechanical properties of wood for furniture, air dry the moisture content from 13.78 to 14.89%, flexural strength from 509.25 to 680.50 kg/cm2, and compressive strength parallel to fiber 342.1 - 412.9 kg/cm2. Finishing the treatment process using five types of finishing materials can increase the decorative value (color and fiber) wood. Before finishing the process of acacia mangium wood has the appearance of colors and fibers and less attractive (scale scores 2-3), after finishing acacia wood fibers have the appearance of colors and interesting and very interesting (scale 4-5).Keywords: mangium wood, mechanical properties, decorative value, finishing, furniture.

scholarly journals Effect of waterlogging on physical and mechanical properties of Samanea saman (Jacq.) Merr. tree

2017 ◽  
Vol 52 (1) ◽  
pp. 49-52
Author(s):  
Elias ◽  
AK Das ◽  
MM Rahman ◽  
MA Islam
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Physical And Mechanical Properties ◽  
Wood Properties ◽  
Dry Density ◽  
Waterlogged Area ◽  
Mechanical And Physical Properties ◽  
Samanea Saman

This research intends to explore the mechanical and physical properties of waterlogged rain tree (Samanea saman). The variation of mechanical and physical wood properties grown in waterlogged and non-waterlogged area were studied. Four trees of the species were selected from two areas. Important mechanical and physical properties were examined for the wood of two types of trees Oven dry density for the wood of waterlogged tree was 420 kg/m3 whether it was 550 kg/m3 for the wood of non-waterlogged tree. The MOR of wood of waterlogged tree was 58.2 N/mm2 and wood of non-waterlogged tree produced 78.1 N/mm2. The MOE of the wood of waterlogged tree and non-waterlogged tree were 1478 and 4876 N/mm2. The physical and mechanical properties were lower for the wood of waterlogged tree. Such findings may in proper uses of the species.Bangladesh J. Sci. Ind. Res. 52(1), 49-52, 2017

scholarly journals Mechanical and physical properties of fine-grained concrete for concrete additive manufacturing

2019 ◽  
Vol 91 ◽  
pp. 02041
Author(s):  
Sergey Udodov ◽  
Yuriy Galkin ◽  
Philip Belov
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Physical Properties ◽  
Crucial Role ◽  
Physical And Mechanical Properties ◽  
Concrete Composition ◽  
Fine Grained ◽  
Mechanical And Physical Properties ◽  
Time Periods

Additive manufacturing (3D printing) is becoming more and more common in the field of modern construction. However, for wider implementation of this technology, it is necessary to solve a number of material-oriented scientific problems related to development of concrete composition with targeted rheological, stress-strain, physical and mechanical properties. It has been established that time periods between successful applications of layers play the crucial role in ensuring monolithic features of the “printed” structures. Application of mathematics planning of the experiment allowed establishing the main principles of formation of basic physical and mechanical properties of fine-grained concrete depending on material composition.

Effects of Antioxidants Content on the Physical and Mechanical Properties of Wood Plastic Composites

2011 ◽  
Vol 471-472 ◽  
pp. 151-156 ◽  
Author(s):  
Mohd Hafizuddin Ab Ghani ◽  
Ahmad Haji Sahrim
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
High Density Polyethylene ◽  
Natural Fibers ◽  
Physical And Mechanical Properties ◽  
Screw Extruder ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Mechanical And Physical Properties ◽  
Twin Screw

We investigated the effects of amount of antioxidants variability on selected mechanical and physical properties of wood plastic composites. Recycled high density polyethylene (rHDPE) and natural fibers were compounded into pellets by compounder, then the pellets were extruded using co-rotating twin-screw extruder and test specimens were prepared by hot and cold press process. From the study, samples with 0.5 wt% of antioxidants produce the highest strength and elasticity of composites. The effect of antioxidants presence on water uptake is minimal.

scholarly journals Influence of different sheet compositions and commercial adhesives on the performance of multilaminated plywood

2021 ◽  
Author(s):  
Carine Setter ◽  
Uasmim Lira Zidanes ◽  
Eduardo Hélio de Novais Miranda ◽  
Flávia Maria Silva Brito ◽  
Lourival Marin Mendes ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Water Absorption ◽  
Bulk Density ◽  
Phenol Formaldehyde ◽  
Urea Formaldehyde ◽  
Physical And Mechanical Properties ◽  
Forest Species ◽  
Specific Pressure

Abstract The quality of plywood panels depends on factors such as the forest species and the adhesive used in their production, and understanding the interferences of these factors in the final properties of the plywood is of fundamental importance. The study aimed to develop multilaminate plywood panels with two forest species and two types of adhesive and to evaluate the influences of these factors (forest species and adhesive) on the physical and mechanical properties of the plywood. The panels were produced with sheets of parica and pine with two types of adhesives, urea-formaldehyde and phenol-formaldehyde, with a weight of 150 g/cm². Then, each set was pressed for 10 minutes under a specific pressure of 0.98 MPa at a temperature of 150 °C. Three panels were produced for each type of blade and adhesive, totaling four treatments. The plywood was evaluated for physical properties (humidity, bulk density, and water absorption) and mechanical properties (parallel and perpendicular static flexion and resistance to mechanical shear). The results showed that the forest species had a greater influence on physical and mechanical properties, with the best results being observed for plywood produced with pine. The panels with sheets of parica and phenol-formaldehyde adhesive showed less moisture. The apparent density of the panels should be considered as it positively influenced the mechanical properties and negatively impacted water absorption. It is concluded that the plywood produced can be used for internal and external applications. However, it is indicated for structural purposes as it did not meet the requirements of the NBR 31.000.001/2:2001.

SIFAT FISIS DAN MEKANIS ANYAMAN BAMBAN (Donax canniformis) DENGAN BAHAN STABILISATOR PEG 1000 DAN TANIN KULIT AKASIA

2014 ◽  
Vol 7 (2) ◽  
pp. 23
Author(s):  
Dwi Harsono
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Physical And Mechanical Properties ◽  
Raw Material ◽  
Biological Resources

Bamban (Donax canniformis) is one of the biological resources that grow in the swampy areas and has been used by the community as a raw material in the form of woven handicrafts. Bamban bark that used as raw material woven texture is hard and the surface was very slippery so hard to make. This study was conducted to determine the nature of the characteristics of stem Bamban and determine the effectiveness of the stabilizers PEG 1000 and tannin from extract acacia bark in improving the quality of physical and mechanical properties strands of Bamban. Treatments include immersion with PEG 1000 and acacia bark tannins for 2 hours. Results of the study the effectiveness of treatments of soaking the material stabilizers PEG 1000 and tannins from extract acacia bark all of them can improve the physical and mechanical properties of raw material of Bamban woven handicraft and make it easier for artisans in the process of weaving due to the treated material can make more limp strands of Bamban and not to stiff, in addition to making the product brighter and more attractive.Keywords : bamban, physical properties , mechanical  properties

scholarly journals Effect of waterlogged condition on wood properties of Acacia nilotica (L.) debile tree

2015 ◽  
Vol 50 (2) ◽  
pp. 71-76
Author(s):  
J Alam ◽  
AK Das ◽  
MM Rahman ◽  
MA Islam
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Physical And Mechanical Properties ◽  
Wood Properties ◽  
Acacia Nilotica ◽  
Dry Density ◽  
Waterlogged Condition ◽  
Mechanical And Physical Properties ◽  
The Right

This study is aimed to assess the mechanical and physical properties of waterlogging Acacia nilotica (babla). The important physical and mechanical properties were determined. The oven dry density of the wood of waterlogged tree and non-waterlogged tree was 780 and 850kg/m3. The MOR of the wood of waterlogged tree was 117N/mm2 while non-waterlogged tree showed the value of MOR 127N/mm2. The MOE of the wood of waterlogged tree and non-waterlogged tree was 1880 and 1950 N/mm2 respectively. The study of properties on A. nilotica wood grown in different conditions will help to choose the right type of its wood for suitable purposes.Bangladesh J. Sci. Ind. Res. 50(2), 71-76, 2015

scholarly journals SIFAT MEKANIK PAPAN KOMPOSIT BERBAHAN DASAR SERAT SABUT KELAPA DAN SERAT BATANG PISANG

2017 ◽  
Vol 3 (2) ◽  
pp. 207 ◽  
Author(s):  
Kosim Kosim ◽  
Wahyudi Wahyudi ◽  
Susilawati Susilawati ◽  
Aris Doyan
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Natural Fiber ◽  
Natural Fibers ◽  
Physical And Mechanical Properties ◽  
Particle Board ◽  
Banana Fiber ◽  
Composite Board ◽  
Reinforcing Material

Research on the manufacture of composite particle board based on natural fiber: coconut fiber (SSK) and banana fiber (SBP) by using PVAc matrix has been conducted. The purpose of this research is to get the physical and mechanical value of standard on composite board based on SNI03-2105-2006The research method is by taking the comparison of banana fiber reinforcing material (SBP) and coco fiber (SSK) in the form of particle size with composition ie (a) SBP 0%: SKK 100% (b) SBP 50%: SKK 50%, (c) SBP 80%: SSK 20, (d) SBP 60%: SSK 40%, (e) SBP 40%: SSK 60%, (f) SBP 20%: SKK 80%, and (g) SBP 100%: SSK 0%.All composite boards consist of 70 % Matrix and 30% fiber. The result of physical properties for density (ρ) ranges from 0.54 gr / cm3 - 0.75 gr / cm3 and for water content (KA) ranges from 10.5% - 13.9%.As for the mechanical properties of the value of modulus rupture (MOR) ranged between 3483.44 kgf / cm2 - 7472,30 kgf / cm2 and elastic modulus value (MOE) ranged between 15981.23 kgf / cm2 - 27243,74 kgf / cm2. Based on the analysis of tredline graphs, both for physical and mechanical properties, it turns out for each composition of natural fibers to give different values.This means that the composition of the SSK-SBP mixture has an influence on the physical properties as well as the mechanical properties of the composite board. The quality of natural fiber-based composite board (SSK and SBP) both physical and mechanical properties have been in accordance with the standard reference SNI 03-02105-2006.

The physical and mechanical properties of recycled gypsum and potential application of pre-molded panels

2017 ◽  
Vol 4 (2) ◽  
pp. 21
Author(s):  
Olindo Savi ◽  
Rafael Alves Souza ◽  
Nilson Tadeu Mascia ◽  
Mateus Henrique Souza
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Physical Properties ◽  
Bending Strength ◽  
Mechanical Performance ◽  
Physical And Mechanical Properties ◽  
Strength Testing ◽  
Recycled Gypsum ◽  
Potential Use

This study analyses the physical properties of recycled gypsum and mechanical performance of pre-molded gypsum panels made of recycled gypsum. A compatation with commercial gypsum physical properties and mechanica behavior of pre-molded commercial gypsum panels is also carried out. After collection, recycling and grinding gypsum residues, the quality of the powder produced was evaluated in terms of units of mass and fineness modulus. Additional tests of the dry paste were conducted for assessment of hardness, water absorption, and compressive strength of recycled gypsum. The commercial potential of the material was evaluated by the bending strength testing pre-molded panels. The results demonstrate that gypsum recycling is sustainable, ecologically correct and feasible for the production of pre-molded elements with great potential use in civil construction. Keywords: gypsum panels, mixed pastes, sustainable, gypsum pastes.

scholarly journals Mechanical and Physical Properties of Oriented Strand Lumber (OSL): The Effect of Fortification Level of Nanowollastonite on UF Resin

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1884 ◽  
Author(s):  
Hassani ◽  
Taghiyari ◽  
Schmidt ◽  
Maleki ◽  
Papadopoulos
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Urea Formaldehyde ◽  
Physical And Mechanical Properties ◽  
Formaldehyde Resin ◽  
Hydroxyl Groups ◽  
Optimum Level ◽  
Uf Resin ◽  
Mechanical And Physical Properties ◽  
Resin Curing

The aim of this work is to investigate the effect of the fortification level of nanowollastonite on urea-formaldehyde resin (UF) and its effect on mechanical and physical properties of oriented strand lumbers (OSL). Two resin contents are applied, namely, 8% and 10%. Nanowollastonite is mixed with the resin at two levels (10% and 20%). It is found that the fortification of UF resin with 10% nanowollastonite can be considered as an optimum level. When nanowollastonite content is higher (that is, 20%), higher volume of UF resin is left over from the process of sticking the strips together, and therefore is absorbed by wollastonite nanofibers. The mechanism involved in the fortification of UF resin with nanowollastonite, which results in an improvement of thickness swelling values, can be attributed to the following two main factors: (i) nanowollastonite compounds making active bonds with the cellulose hydroxyl groups, putting them out of reach for bonding with the water molecules and (ii) high thermal conductivity coefficient of wollastonite improving the transfer of heat to different layers of the OSL mat, facilitating better and more complete resin curing. Since nanowollastonite contributes to making bonds between the wood strips, which consequently improves physical and mechanical properties, its use can be safely recommended in the OSL production process to improve the physical and mechanical properties of the panel.

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