scholarly journals Paper Strength Development with Beating and Polyamideamine-epichlorohydrin (PAE)

2016 ◽  
Vol 1 (3) ◽  
pp. 123
Author(s):  
Maria Ulfa ◽  
Bambang Setiaji ◽  
Wega Trisunaryanti ◽  
Triyono Triyono
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Raw Material ◽  
Strength Development ◽  
Paper Strength ◽  
Wet Strength

Thecharacter of coir handsheets prepared with beating and addition of polyamideamine-epichlorohydrin (PAE) was investigated. Pulp coir from soda-anthraquinone pulping was used as raw material for manufacture of coir handsheets. Physical and mechanical properties obtained with different beating level and PAE dosage were measured. The addition of PAE 10% w/w and beating on pulp stock of 3000 rev increased grammage and density at 1.9 and 15.8%, respectively. Instead it decreased thickness by 15.8%. Addition PAE dosage of 10% w/w at 10000 rev improved the density, but decreased the porosity and Cobb<sub>60</sub> at 5.8; 10.2; and 19 %, respectively. The highest   dry and wet tensile were obtained at 20 % w/w of PAE. Combination of  beating and addition of PAE on pulp stock formed wet-strength handsheets with range between 28.0 to 34.2%.

The Effect of Lithium Alumina Silicate Phases on Elastic Modulus of Porcelain Tiles

2014 ◽  
Vol 92 ◽  
pp. 188-193 ◽  
Author(s):  
Tuna Aydin ◽  
Alpagut Kara
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Liquid Phase ◽  
Bulk Density ◽  
Bending Strength ◽  
Physical And Mechanical Properties ◽  
Raw Material ◽  
Closed Porosity ◽  
Low Viscosity ◽  
Porcelain Tiles

Spodumene, which is a lithium alumina silicate, has been used as a raw material in the production of thermal shock resistant whitewares and sanitarywares. The presence of spodumene results in enhancement of mullitization and imparts better physical and mechanical properties to ceramics. In this study, the influence of Lithium alumina silicate phases on the mechanical properties of standard porcelain stoneware body was investigated. Especially solid-solid reactions were observed between spodumene and quartz or spodumene and clay. These solid-solid reactions bring about a newly formed lithium alumina silicate (LAS) phases. Spodumene allows the development of a low viscosity liquid phase and results in a decrease in closed porosity, also with increase in bulk density, bending strength and elastic modulus.

scholarly journals Mechanical properties of kenaf fibrous pulverized fuel ash concrete

2018 ◽  
Vol 250 ◽  
pp. 05007
Author(s):  
Norazura Mizal Azzmi ◽  
Jamaludin Mohamad Yatim ◽  
Hazlan Abdul Hamid ◽  
Azmahani Abdul Aziz ◽  
Adole Michael Adole
Keyword(s):  
Mechanical Properties ◽  
Natural Fiber ◽  
Coal Ash ◽  
Physical And Mechanical Properties ◽  
Short Fiber ◽  
Pozzolanic Reaction ◽  
Strength Development ◽  
Kenaf Fiber ◽  
Fuel Ash ◽  
Pulverized Fuel

The main objective of the experimental work is to identify the mechanical properties of Kenaf Fiber incorporate with Ordinary Portland Cement (OPC) and Pulverised Fuel Ash (PFA) in the mix proportions of concrete. Kenaf Fibrous Concrete (KFC) and Kenaf Fibrous Pulverised Fuel Ash Concrete (KFPC) will be measured on physical and mechanical properties in order to investigate the suitability of this natural fiber as a composite material. A comparison of properties between these two composites will determine the density, workability, compressive, tensile, and flexural strength of the concrete. Eight different mixes with varying percentage of Kenaf fiber were prepared with 30N/mm2 strength at 28days ,56 days and 90 days. Short fiber with 25mm and 50mm length were randomly distribute in composite to enhance the tensile and durability. PFA was obtained by the process of burning in the Power Station Coal Ash at Tanjung Bin, Johor. The unburning powder from the process is called as a PFA generally suitable for cement replacement in the concrete mix. The pozzolanic reaction will improve the adhesion of cement gel, hence increased the properties of concrete in a long-term strength development. The result shows that the inclusion of Kenaf fiber improve tensile strength of composite, furthermore the 25% PFA mix increase the durability of concrete.

scholarly journals Analysis Physical and Mechanical Of Particle Boards Raw Materials Nipah Fruit Fiber

Teknomekanik ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 14-19
Author(s):  
M Saddikin ◽  
Hendri Nurdin ◽  
Primawati Primawati
Keyword(s):  
Mechanical Properties ◽  
Moisture Content ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Average Density ◽  
Raw Material ◽  
Average Moisture Content ◽  
Particle Board ◽  
Wood Particles ◽  
Tapioca Flour

The raw materials of the timber industry, especially furniture, are increasingly difficult to obtain in the quantity and quality needed. The development efforts carried out were utilizing Nipah coir waste as a raw material for making particle boards. Particle boards are panel boards made of wood particles or materials containing lignocellulose. Nipah plants contain 27.3% lignin and 36.5% cellulose which has the potential to be used as raw material for particleboard production. This study aims to reveal the physical and mechanical properties of particleboards made from Nipah fruit fibre with adhesive using tapioca flour. The making of particle board is done with a ratio of 90%: 10%, 80%: 20%, 70%: 30%, 60%: 40%, by giving a pressure of 100 kg / cm2. Particle testing is carried out according to the JIS A 5908 standard (2003). From this study, the optimum results were obtained in variations of 60%:40%. The particle physical properties which have an average density value of 1.15 gr / cm3 and an average moisture content of 5.8%. While the mechanical properties obtained by the value of Modulus of Elasticity an average of 21,188.93 kg / cm2. This shows the particle board variations of 60%: 40% produced to meet the JIS A 5908 (2003) standard. Based on the analysis of the quality variations 60%: 40% of particle boards can be recommended as raw materials for interior furniture.

scholarly journals Estudo da produção de pavers para pisos intertravados utilizando resíduos de blocos de concreto

2021 ◽  
Vol 42 (1) ◽  
pp. 21
Author(s):  
Vasni Oliveira da Silva Junior ◽  
Victor Mateus Pavão ◽  
André Camacho Pontremolez ◽  
Bruno de Medeiros Costa ◽  
Gerson Cendes Saragosa ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Precast Concrete ◽  
Physical And Mechanical Properties ◽  
Raw Material ◽  
Technical Knowledge ◽  
Concrete Blocks

This work presents part of a study whose main objective is to observe the behavior of the physical and mechanical properties of the materials (raw material) and of products made for the civil construction from the precast concrete industry, such as concrete blocks and pavers for interlocking floors. Through the investigation, was identified the potential of using the concrete blocks waste of the production as aggregates added to the concretes utilized to produce pavers. Thus, it is expected that this work contributes as a basis for obtaining scientific and technical knowledge regarding the materials and procedures that must be adopted for the manufacture of pavers, allowing their production for commercialization.

scholarly journals Willow wood (Salix alba) as a raw material for pulp production

2005 ◽  
Vol 59 (7-8) ◽  
pp. 175-179
Author(s):  
Bojana Klasnja ◽  
Sasa Orlovic ◽  
Nenad Radosavljevic ◽  
Miroslav Markovic
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Populus Deltoides ◽  
Chemical Properties ◽  
Physical And Mechanical Properties ◽  
Raw Material ◽  
Poplar Wood ◽  
Salix Alba ◽  
Pulp Production ◽  
Sulphate Pulp

The properties of willow wood (structural-physical and mechanical properties and chemical composition) were investigated to determine the parameters of the technological process of semichemical and sulphate pulp manufacture. The experimental material was willow wood Salix alba cl. 107/65/7. Semichemical and sulphate pulp were obtained in the laboratory. The yield, chemical properties and physical-mechanical properties of the obtained intermediate products intended for paper manufacture, were determined. The properties of poplar wood Populus deltoides Bartr. cl.725, were studied and its pulp production performed with the aim of comparison.

High-Effective Lightweight Aggregate Obtained from Glass-Containing Waste

2020 ◽  
Vol 787 (12) ◽  
pp. 66-71
Author(s):  
H.N. Mammadov ◽  
◽  
I.H. Suleymanova ◽  
B.M. Tahirov ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Strength Class ◽  
Physical And Mechanical Properties ◽  
Lightweight Aggregate ◽  
High Strength ◽  
Raw Material ◽  
Material Base ◽  
Current Standard ◽  
Iron And Steel

The properties of high-strength artificial porous aggregate from glass-containing waste of metallurgical productions are described. The developed technology makes it possible to expand the raw material base for the production of aggregates for light concrete. Granulated slags of metallurgical productions – the main (M0>1) slags of the Novokuznetsk Iron and Steel Plant and acid (M0<1) slags of the Gorky plant are studied. According to the results of studies, it was found that the optimal swelling interval for acidic slags is 1000–1100оC, and for basic slags-1100–1150оC. A high – strength artificial porous aggregate-slag gravel with a bulk density of 340–780 kg/m3 and a compressive strength in the cylinder of 2.8–12.3 MPa was obtained. The main physical and mechanical properties of the resulting aggregate, which meets the requirements of the current standard GOST 9757–90 “Gravel, crushed stone and sand. Artificial porous”, were studied. The aggregate obtained is almost twice as strong as the known aggregate of expanded clay gravel. With the use of porous gravel and sand, light concrete of strength class B7,5–B40 and a density of 1100–1600 kg/m3 was obtained.

Interpreting research results for the physical and mechanical properties of wood: An approach not dependent on a juvenile/mature wood boundary

BioResources ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. 6921-6932
Author(s):  
Tomislav Sinković ◽  
Branimir Jambreković ◽  
Tomislav Sedlar
Keyword(s):  
Mechanical Properties ◽  
Radial Direction ◽  
Statistical Tests ◽  
Physical And Mechanical Properties ◽  
Wood Properties ◽  
Mature Wood ◽  
Raw Material ◽  
Technological Properties ◽  
Wood Processing ◽  
The Difference

The interpretation and presentation of research on the physical and mechanical properties of wood in the radial direction is important for the estimation of technological properties in primary wood processing. It is common practice to define the boundary between the juvenile and mature wood zone of tree growth because of the differences in wood properties in these two zones. The juvenile and mature wood zones can be determined statistically based on the significance of the difference in the properties in a particular zone. This paper presents the insufficiency in the statistical determination of the boundary between juvenile and adult wood. Such limitations detract from the potential value and technological exploitation of wood as raw material. Statistical tests yielded zones that were too wide for the transition of juvenile wood to mature wood. Representations of the distribution of properties in the radial direction also complement the knowledge for assessing the technological properties based on the researched use of the presentation of polynomials of the second degree and the display of the Tukey HSD test in the form of comparison tables. The graphical representations by groups of the tested annual rings of fir wood also help to assess the technological properties.

CHARACTERIZATION OF PHYSICAL AND MECHANICAL PROPERTIES OF BIODEGRADABLE FOAM FROM MAIZENA FLOUR AND PAPER WASTE FOR SUSTAINABLE PACKAGING MATERIAL

2020 ◽  
Vol 5 (8) ◽  
Author(s):  
Yusuf Arya Yudanto ◽  
Isti Pudjihastuti
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Operating Time ◽  
Physical And Mechanical Properties ◽  
Operating Conditions ◽  
Raw Material ◽  
Visual Appearance ◽  
Paper Waste ◽  
Best Value

Biodegradable Foam (Biofoam) production is an effort to reduce plastic waste in Indonesia. This product is made to replace Styrofoam, whose raw material is carcinogenic in the form of styrene which cannot be dissolved by the digestive system and is difficult to excrete through urine or feces which can trigger the growth of cancer in the long term and is harmful to the environment. Biofoam in this study is made from cornstarch with the addition of cellulose taken from paper waste. Based on the research that has been done, cornstarch-based biofoam with the addition of cellulose from paper waste as a biofiller can affect the physical and mechanical characteristics of the biofoam produced. The biofoam with a starch:cellulose ratio of 13:10 grams resulted in the best value of water adsorption in the amount 47.26%, also give the best result on tensile strength value and biodegradability value in the amount of 4.548 MPa and 11.943%. The addition of cellulose to the biofoam mixture in an appropriate amount will reduce the water absorption value of the biofoam. Because cellulose can cover the cavities generated by the starch expansion process in the biofoam. Therefore, the addition of cellulose also affects the mechanical properties of biofoam, namely tensile strength. Where the low filler composition in the biofoam will increase the tensile strength, but when the filler composition has passed an optimum point, the filler particles will experience agglomeration thereby reducing the tensile strength of the biofoam product. The variation in operating conditions in the manufacture of starch-based biofoam with the addition of a biofiller in the form of cellulose from paper waste did not significantly affect it. The variation in operating conditions only affects the visual appearance of the biofoam produced. Biofoam samples with the best visual appearance were produced at an operating temperature of 160 ? with an operating time of 30 minutes. Where high temperatures can affect th

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