Automatic control of the physical and mechanical properties of the raw sand‑clay molding mixture in the process of mixture preparation in the new developments of OJSC “BELNIILIT”

OJSC “BELNIILIT” specialists have developed a method and an automatic device for monitoring and managing the quality of raw sand‑clay molding blend, which is based on the integrated control – compaction of the molding blend principles, measurement of humidity and strength in the raw state, measurement of temperature directly in the process of mixture preparation. The equipment is integrated into existing automated mixture preparation complexes manufactured by OJSC “BELNIILIT”, it is possible to install on old design mixers.

Download Full-text

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

Jurnal Fisika : Fisika Sains dan Aplikasinya ◽

10.35508/fisa.v3i3.605 ◽

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

Download Full-text

Physical and mechanical characteristics of cement mortars and concretes with addition of clinoptilolite from Beli Plast deposit (Bulgaria), silica fume and fly ash

Clay Minerals ◽

10.1180/claymin.2011.046.2.213 ◽

2011 ◽

Vol 46 (2) ◽

pp. 213-223 ◽

Cited By ~ 6

Author(s):

V. Lilkov ◽

I. Rostovsky ◽

O. Petrov

Keyword(s):

Mechanical Properties ◽

Compressive Strength ◽

Fly Ash ◽

Silica Fume ◽

Mechanical Characteristics ◽

Physical And Mechanical Properties ◽

Specific Pore Volume ◽

Cement Mortars ◽

Physical And Mechanical Characteristics

AbstractCement mortars and concretes incorporating clinoptilolite, silica fume and fly ash were investigated for changes in their physical and mechanical properties. It was found that additions of 10% clinoptilolite and 10% Pozzolite (1:1 mixture of silica fume and fly ash) were optimal for improvement of the quality of the hardened products, giving 8% and 13% increases in flexural and compressive strength respectively. The specific pore volume of the mortars incorporating zeolite decreased between the 28th and 180th day to levels below the values for the control composition due to the fact that clinoptilolite exhibits its pozzolanic activity later in the hydration. In these later stages, pores with radii below 500 nm increased at the expense of larger pores. The change in the pore-size distribution between the first and sixth months of hydration occurs mostly in the mortars with added zeolite.

Download Full-text

KARAKTERISASI Al-Zn7 HASIL PELEBURAN DAPUR CRUCIBLE DENGAN TIPE PENUANGAN TUNGKIK

Infotekmesin ◽

10.35970/infotekmesin.v9i02.13 ◽

2019 ◽

Vol 9 (02) ◽

pp. 66-71

Author(s):

Ipung Kurniawan ◽

Bayu Aji Girawan ◽

Imam Yulianto

Keyword(s):

Mechanical Properties ◽

Experimental Research ◽

Physical And Mechanical Properties ◽

Industrial Activities ◽

Average Value ◽

Crucible Furnace ◽

Mechanical Strengths ◽

Test Result

Nowdays, Alumunium is widely used and utilized in industrial activities because of light properties and having well mechanical strengths. The use of alumunium does not only limit on the use of new alumunium, but also the used one. The main purpose of this research, i.e., (1) testing of physical and mechanical properties of Al-Zn7 from the fussion of Crucible furnace; (2) analyzing crucible furnace of the Al-Zn7 fussion by comparing to the result of the first and second fussion. The method of this research was experimental research with the average value of each the first casting was 49,2 HRB and the second one was 50,3 HRB. Based on the test result showed that the quality of crucible furnace was good because it did not experience the significant changes.

Download Full-text

Study of performance properties of an asphalt modified with polyethylen

Chemical Bulletin of Kazakh National University ◽

10.15328/cb1028 ◽

2018 ◽

pp. 24-30

Author(s):

Safura Satayeva ◽

Aibarsha Аbdrakhmanova ◽

Anar Kurmangaliyeva

Keyword(s):

Mechanical Properties ◽

Physical And Mechanical Properties ◽

Polymeric Materials ◽

Softening Temperature ◽

Oil Refining ◽

Rational Approach ◽

Road Asphalt ◽

Polymer Waste ◽

Needle Penetration

The quality of road bitumen is one of the most important factors determining the service life and quality of road asphalt concrete pavements. Current trends in oil refining and, in particular, increasingly deeper processing of crude oil, require consideration of the characteristics of its chemical composition and structure for the production of road bitumen, and, accordingly, the physical and mechanical properties of the bitumen produced. In this study the BOR 70/100 oil asphalt from the Aktau Bitumen Factory LLP “CaspiBitum” was considered. An asphalt was modified with polymer waste to upgrade operating properties. The I-40 industrial oil was used as a softener. Indicators like penetration, extensibility (ductility), brittleness temperature and softening temperature of bitumen were explored in this study. It was shown, that physical-mechanical properties of bitumen increased after modification: needle penetration depth decreased, extensibility decreased, softening temperature increased. Also, the influence of polymers on the structure of bitumen and the effect of their action in the composition were examined. Structure of polymer waste in Republic of Kazakhstan was analyzed. It was proved, that the usage of the recycled polyethylene as a modifier is a rational approach, and it lets to recycle stocks of secondary polymeric materials. Also problems of improving the properties of polymer-bitumen binder and ecology solved.

Download Full-text

Dispersing the Charge as a Way to Improve the Quality of Ceramic Bricks

Materials Science Forum ◽

10.4028/www.scientific.net/msf.931.558 ◽

2018 ◽

Vol 931 ◽

pp. 558-563 ◽

Cited By ~ 1

Author(s):

Viktoriya A. Guryeva ◽

Viktor V. Dubineckij ◽

Aleksandr V. Doroshin

Keyword(s):

Mechanical Properties ◽

Original Composition ◽

Water Absorption ◽

Raw Materials ◽

Physical And Mechanical Properties ◽

Dust Particles ◽

Drill Cuttings ◽

Additional Processing ◽

Grinding Time

Investigations of the influence of dispersion of feedstock on the basis of clay of the Buguruslan deposit and drill cuttings from the facilities of PJSC «Orenburgneft» have been carried out, it is revealed that as the grinding time increases, the content of clay and dust particles increases. Intensive sintering of the samples between 1000 °C and 1100 °C has been established, which is confirmed by the compaction of the samples and the decrease in the water absorption of the ceramic masses. Minimal water absorption, within 2.35%, showed a sample of 3-hour grinding, and a sample of a 2-hour grinding of 8.34%. As a result of the study of dispersion of the charge on the basis of clay raw materials and drill cuttings, it was found that by subjecting the original composition to additional processing, within 2 hours, the physical and mechanical properties of ceramic bricks can be improved.

Download Full-text

Testing Research of Physical and Mechanical Properties of Snows on Railroad Switch

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.380-384.4387 ◽

2013 ◽

Vol 380-384 ◽

pp. 4387-4390 ◽

Cited By ~ 1

Author(s):

Cun Yuan Mu ◽

Bo Feng ◽

Ming Ge Sui ◽

An Min Wang

Keyword(s):

Mechanical Properties ◽

Compressive Strength ◽

Ambient Temperature ◽

Conservation Status ◽

Physical And Mechanical Properties ◽

Quality Parameters ◽

Snow Density ◽

Strength Tests ◽

Railway Turnout

The conservation status of the railway turnout junctions were analyzed, the hardness, density, compressive strength tests of snow squeezed by railway turnout junctions were studied, thus reaching a conclusion that different quality of snow owns different hardness and densities. For new snow ( or loose snow) whose density ρ = 0.3g/cm2, snow compressive strength is small; when the compacted snow density ρ > 0.3g/cm2, the regulation of snow compressive strength should be the snow compressive strength improve with decreasing temperature, while the denser the snow density is and the lower ambient temperature is, the faster the snow increase compressive strength. All these provided the snow quality parameters for the design of railway turnout junction snow cleaning machines and tools.

Download Full-text

Properties and Application of Edible Modified Bacterial Cellulose Film Based Sago Liquid Waste as Food Packaging

Polymers ◽

10.3390/polym13203570 ◽

2021 ◽

Vol 13 (20) ◽

pp. 3570

Author(s):

Nur Arfa Yanti ◽

Sitti Wirdhana Ahmad ◽

La Ode Ahmad Nur Ramadhan ◽

Jamili ◽

Muzuni ◽

...

Keyword(s):

Mechanical Properties ◽

Bacterial Cellulose ◽

Food Packaging ◽

Room Temperature ◽

Liquid Waste ◽

Physical And Mechanical Properties ◽

Microbial Count ◽

Casting Technique ◽

Composites Film

Bacterial cellulose (BC) based on sago liquid waste has been developed to be used as food packaging. This study investigated the physicochemical and mechanical properties of modified BC film and its application as food packaging. The modified BC film performed carboxymethyl cellulose (CMC) as a stabilizer and glycerol as a plasticizer. Films were prepared by casting technique using BC as the primary material and composites with various concentrations of CMC and glycerol (0.5%, 1%, and 1.5%, v/v). BC film was applied as the packaging of meat sausage, and the quality of meat sausage was measured based on weight loss, moisture content, pH, protein content, and total microbial count. The addition of CMC and glycerol influences the physical and mechanical properties of BC composites film. The best mechanical properties of edible BC film were collected by adding 1% CMC and 1% glycerol with a tensile strength of 17.47 MPa, elongation at a break of 25.60%, and Young’s modulus of 6.54 GPa. FTIR analysis showed the characteristic bands of BC, and the addition of CMC and glycerol slightly changed the FTIR spectrum of the composites. The utilization of modified BC-based sago liquid waste film as the packaging of meat sausage could maintain sausage quality during 6 days of storage at room temperature. Therefore, edible BC film has the potential to be used as food packaging.

Download Full-text

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

10.21203/rs.3.rs-220197/v1 ◽

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.

Download Full-text

Characteristics of Medium Density Fiberboards for Furniture Production and Interior Application

South East European Journal of Architecture and Design ◽

10.3889/seejad.2016.10013 ◽

2016 ◽

Vol 2016 ◽

pp. 1-5 ◽

Cited By ~ 1

Author(s):

Violeta Jakimovska Popovska ◽

Borche Iliev ◽

Ivo Spiroski

Keyword(s):

Mechanical Properties ◽

Physical And Mechanical Properties ◽

High Humidity ◽

Medium Density ◽

Production Sector ◽

Republic Of Macedonia ◽

Dry Conditions ◽

The Republic ◽

End Use

BACKGROUND: The paper analyzes the properties of medium density fiberboards (MDF) intended for furniture production and interior application. Because MDF panels are one of the mostly used wood-based panels in furniture production sector in the Republic of Macedonia it is important to know and understand their basic physical and mechanical properties. AIM: For better understanding of MDF panels and their proper end use by the furniture constructors and designers, physical and mechanical properties of MDF panels present in the market are tested.MATERIALS AND METHODS: Commercially produced MDF panels taken from one company from wood-based panel market were tested. Evaluation of the quality of the panels was made on the basis of the obtained results for the physical and mechanical properties of the panels. Properties of MDF were tested according to the national MKS standards and European norms.RESULTS: Tested MDF panels present on our market are characterized by good physical and mechanical properties that meet the requirements of the standards for MDF for use in dry conditions including furniture production and interior applications.CONCLUSIONS: It is recommended to avoid application of these MDF panels in high humidity conditions for a longer exploitation period. For this kind of applications, such as bathroom areas, the furniture constructors and interior designers should consider use of MDF.H type of panel for application in high humidity conditions, which will provide good dimensional stability of the products during whole exploitation period.

Download Full-text

SIFAT FISIK DAN MEKANIK PAPAN PARTIKEL BERDASARKAN KOMPOSISI LIMBAH KULIT BUAH PINANG DAN LIMBAH KAYU GERGAJIAN DENGAN VARIASI KADAR PEREKAT

JURNAL HUTAN LESTARI ◽

10.26418/jhl.v9i2.46787 ◽

2021 ◽

Vol 9 (2) ◽

pp. 207

Author(s):

Asmawati Wurya Sari ◽

M Dirhamsyah ◽

Yuliati Indrayani

Keyword(s):

Mechanical Properties ◽

Moisture Content ◽

Water Absorption ◽

Raw Materials ◽

Urea Formaldehyde ◽

Physical And Mechanical Properties ◽

Betel Nut ◽

Particle Board ◽

Composition Ratio

This research aimed to analyze the physical and mechanical properties of particleboard based on the composition of raw materials and adhesive content as well as their interaction with the optimum quality of particle boards that meet JIS A 5908-2003 standards. The particleboard was made with a size of 30 cm x 30 cm x 1 cm with a target density of 0.7 g/cm³. The pressing was done at a temperature of 140°C for 8 minutes with a pressure of 25 kg/cm². The composition ratio of betel nut peel waste and sawdust varied, namely 60% betel nut peel waste: 40% sawdust, 50% betel nut peel waste: 50% sawdust, and 40% betel nut peel waste: sawdust 60%. The adhesive used was Urea Formaldehyde with a concentration of 12%, 14%, and 16%. The results showed that all test values met the JIS A 5908: 2003 standard except the MOE test. The optimum value of particle board of betel nut peel and sawdust was with a composition ratio of 50% betel nut peel waste: 50% sawdust, 16% adhesive content, with a density value of 0.6876 g/cm³, a moisture content of 9,4530%, water absorption 34,5306%, thickness expansion 8,2508%, MOE 12432,6243 kg/cm², MOR 205,8462 kg/cm², adhesive firmness 2,2530 kg/cm², screw holding strength 81,6861 kg/cm².Keywords: adhesive content, betel nut peel waste, material composition, mechanical properties, particleboard, physical.Abstrak Penelitian ini bertujuan untuk menganalisis sifat fisik dan mekanik papan partikel berdasarkan komposisi bahan baku dan kadar perekat serta interaksi keduanya terhadap kualitas papan partikel yang optimum serta memenuhi standar JIS A 5908-2003. Papan partikel dibuat dengan ukuran 30 cm x 30 cm x 1 cm dengan target kerapatan 0,7 g/cm³. Pengepresan pada suhu 140°C selama 8 menit dengan tekanan 25 kg/cm². Perbandingan komposisi kulit buah pinang dan serbuk kayu gergaji bervariasi yaitu kulit buah pinang 60% : serbuk kayu gergaji 40%, kulit buah pinang 50% : serbuk kayu gergaji 50% dan kulit buah pinang 40% : serbuk kayu gergaji 60%. Perekat yang digunakan adalah Urea Formaldehida dengan konsentrasi 12%, 14% dan 16%. Hasil penelitian menunjukkan semua nilai uji memenuhi standar JIS A 5908 : 2003 kecuali uji MOE. Nilai papan partikel kulit buah pinang dan serbuk kayu gergaji optimum dengan perbandingan komposisi kulit buah pinang 50% : serbuk kayu gergaji 50%, kadar perekat 16%, dengan nilai densitas 0,6876 g/cm³, kadar air 9,4530%, daya serap air 34,5306%, pengembangan tebal 8,2508%, MOE 12432,6243 kg/cm², MOR 205,8462 kg/cm², Keteguhan rekat 2,2530 kg/cm², kekuatan menahan sekrup 81,6861 kg/cm².Kata kunci : papan partikel, kadar perekat, kulit buah pinang, komposisi bahan, sifat fisik dan mekanik.

Download Full-text