scholarly journals OPTIMIZATION OF SULFUR-BASED BINDER COMPOSITIONS AND THEIR PROPERTIES

2021 ◽  
Author(s):  
Т.М. Худякова ◽  
В.Ф. Вернер ◽  
Б.К. Сарсенбаев ◽  
Н.Г. Нестренко ◽  
Г.О. Каршыга ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Physical And Mechanical Properties ◽  
Composite Binder ◽  
Protective Properties ◽  
X Ray

В статье рассмотрена возможность получения композиционного вяжущего на основе серы. Определены оптимальные составы и изучены физико-механические свойства образцов. А также приведены исследования по определению защитных свойств композиционных материалов от гамма и рентгеновского излучения. Приведенные результаты исследования могут служить предпосылкой для организации производства серного вяжущего и применение его в технологии получения серобетона. The article considers the possibility of producing a composite binder based on sulfur. The optimal compositions were determined and the physical and mechanical properties of the samples were studied. The research on the determination of the protective properties of composite materials against gamma and X-ray radiation is also presented. The results of the study can serve as a prerequisite for the organization of the production of sulfur binder and its application in the technology of producing sulfur concrete.

scholarly journals Analysis of the Physical and Chemical Properties of Biocomposite Materials Obtained from Feather Flour and Polypropylene

2021 ◽  
Vol 57 (4) ◽  
pp. 325-332
Author(s):  
Sebastian Aradoaei ◽  
Vasile Bahrin ◽  
Mihaela Aradoaei ◽  
Mirela Alina Constantin ◽  
Lucian Alexandru Constantin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Chemical Properties ◽  
Physical And Mechanical Properties ◽  
Charpy Impact ◽  
Melt Flow Index ◽  
Dielectric Behavior ◽  
Flow Index ◽  
Physical And Chemical

The study is highlighting the possibility of modeling the properties of composite materials based on recycled polypropylene (PPR), flour feathers(FF), and compatibilizers (C). The composite materials with 10% and 20% feather flour content were mixed and processed with a two-stage extruder having four heating zones between 200-230�C, in order to obtain granules. The granules were injected in various forms to evaluate the properties. The composite materials have been evaluated for determination of melt flow index (1900C; 2.16kg), density, Charpy impact, breaking strength, elongation at break, and the dielectric behavior. The results showed that the introduction of feather flour in the polymer matrix based on PPR leads to decreased flow properties as well as physical and mechanical properties. The solution in solving these deficiencies was to use compatibility agents, that would improve these properties. The physico mechanical properties were analyzed in order to identify a composite with optimal properties for industrial application.

scholarly journals COMPARATIVE EVALUATION OF BND 50/70 ROAD BITUMEN MODIFIED WITH SKEPT-60 AND SKN-26 ELASTOMERS

2021 ◽  
Vol 0 (4) ◽  
pp. 12-19
Author(s):  
E.А. Guseinova ◽  
◽  
V.A. Mammadova ◽  
X.Ch. Abıyev ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Comparative Evaluation ◽  
Mechanical Characteristics ◽  
Physical And Mechanical Properties ◽  
Flash Point ◽  
High Concentrations ◽  
Composite Samples ◽  
Physical And Mechanical Characteristics

The article provides information on the physical and mechanical properties of polymer-bitumen compositions obtained by modifying road bitumen BND 50/70 with elastomers SKEPT-60 and SKN-26 and determination of the obtained polymer-bitumen composites. The properties of composite samples of various concentrations (2.5, 3.0, 5.0%, 6.5 and 7.0%) were determined: needle depth, softening, brittleness and flash point, stretching and adhesion. It was determined that the physical and mechanical characteristics of polymer-bitumen composite materials obtained at high concentrations (6.5, 7.0%) are improved

scholarly journals Application of waste wood of processing in-dustries in the manufacture of construction materials with specific properties

10.12737/6294 ◽  
2014 ◽  
Vol 4 (3) ◽  
pp. 220-229
Author(s):  
Ветошкин ◽  
Yuriy Vetoshkin ◽  
Яцун ◽  
Irina Yatsun ◽  
Шишкина ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Technological Process ◽  
Construction Materials ◽  
Physical And Mechanical Properties ◽  
Total Production ◽  
Waste Wood ◽  
X Ray ◽  
Wood Processing ◽  
Wood Particles

Currently, the share of wood based materials with specific properties in total production is significant and it is increasing every year. Cre-ation of composite materials based on wood particles with the inclusion of their design of the various components allows to obtain mate-rials with specific properties. The Department of Mechanical wood processing of USFEU de-veloped a design of PLITOTREN material with specific properties (protection against X-ray radiation). The technological process of manufacturing the material is presented, basic physical and mechanical properties of the plate are obtained, and scope of the material, taking into account the specific properties is proposed.

Basic set of experiments for determination of mechanical properties of sand

2014 ◽  
Vol 62 (1) ◽  
pp. 129-137
Author(s):  
A. Sawicki ◽  
J. Mierczyński
Keyword(s):  
Mechanical Properties ◽  
Soil Mechanics ◽  
Physical And Mechanical Properties ◽  
Local Strain ◽  
Initial State ◽  
Laboratory Equipment ◽  
Additional Information ◽  
Basic Set ◽  
Initial Anisotropy

Abstract A basic set of experiments for the determination of mechanical properties of sands is described. This includes the determination of basic physical and mechanical properties, as conventionally applied in soil mechanics, as well as some additional experiments, which provide further information on mechanical properties of granular soils. These additional experiments allow for determination of steady state and instability lines, stress-strain relations for isotropic loading and pure shearing, and simple cyclic shearing tests. Unconventional oedometric experiments are also presented. Necessary laboratory equipment is described, which includes a triaxial apparatus equipped with local strain gauges, an oedometer capable of measuring lateral stresses and a simple cyclic shearing apparatus. The above experiments provide additional information on soil’s properties, which is useful in studying the following phenomena: pre-failure deformations of sand including cyclic loading compaction, pore-pressure generation and liquefaction, both static and caused by cyclic loadings, the effect of sand initial anisotropy and various instabilities. An important feature of the experiments described is that they make it possible to determine the initial state of sand, defined as either contractive or dilative. Experimental results for the “Gdynia” model sand are shown.

scholarly journals Physical and Mechanical Properties of Natural Leaf Fiber-Reinforced Epoxy Polyester Composites

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1369
Author(s):  
Sanjeev Kumar ◽  
Lalta Prasad ◽  
Vinay Kumar Patel ◽  
Virendra Kumar ◽  
Anil Kumar ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Synthetic Fibre ◽  
Low Cost ◽  
Fibre Length ◽  
Physical And Mechanical Properties ◽  
Natural Fibres ◽  
Risk Environment ◽  
Insulation Property ◽  
Natural Leaf

In recent times, demand for light weight and high strength materials fabricated from natural fibres has increased tremendously. The use of natural fibres has rapidly increased due to their high availability, low density, and renewable capability over synthetic fibre. Natural leaf fibres are easy to extract from the plant (retting process is easy), which offers high stiffness, less energy consumption, less health risk, environment friendly, and better insulation property than the synthetic fibre-based composite. Natural leaf fibre composites have low machining wear with low cost and excellent performance in engineering applications, and hence established as superior reinforcing materials compared to other plant fibres. In this review, the physical and mechanical properties of different natural leaf fibre-based composites are addressed. The influences of fibre loading and fibre length on mechanical properties are discussed for different matrices-based composite materials. The surface modifications of natural fibre also play a crucial role in improving physical and mechanical properties regarding composite materials due to improved fibre/matrix adhesion. Additionally, the present review also deals with the effect of silane-treated leaf fibre-reinforced thermoset composite, which play an important role in enhancing the mechanical and physical properties of the composites.

scholarly journals Effect of Structural Differences on the Mechanical Properties of 3D Integrated Woven Spacer Sandwich Composites

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4284
Author(s):  
Lvtao Zhu ◽  
Mahfuz Bin Rahman ◽  
Zhenxing Wang
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Three Dimensional ◽  
Sheet Thickness ◽  
Physical And Mechanical Properties ◽  
Sandwich Composites ◽  
Computed Tomography Images ◽  
And Performance ◽  
Industrial Textiles ◽  
Load Conditions

Three-dimensional integrated woven spacer sandwich composites have been widely used as industrial textiles for many applications due to their superior physical and mechanical properties. In this research, 3D integrated woven spacer sandwich composites of five different specifications were produced, and the mechanical properties and performance were investigated under different load conditions. XR-CT (X-ray computed tomography) images were employed to visualize the microstructural details and analyze the fracture morphologies of fractured specimens under different load conditions. In addition, the effects of warp and weft direction, face sheet thickness, and core pile height on the mechanical properties and performance of the composite materials were analyzed. This investigation can provide significant guidance to help determine the structure of composite materials and design new products according to the required mechanical properties.

Sign in / Sign up

Export Citation Format

Share Document