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

Effect of MgO•Sb2O5 on Fire Resistance and Physical and Mechanical Properties of Cable PVC-Plasticate

2021 ◽  
Vol 899 ◽  
pp. 557-562
Author(s):  
Timur A. Borukaev ◽  
Luiza I. Kitieva ◽  
Abubekir Kh. Shaov ◽  
A.A. Kyarov
Keyword(s):  
Mechanical Properties ◽  
Fire Resistance ◽  
Mechanical Characteristics ◽  
Negative Impact ◽  
Physical And Mechanical Properties ◽  
Antimony Oxide ◽  
Magnesium Carbonate ◽  
Physical And Mechanical Characteristics

Based on magnesium carbonate and antimony oxide (V), MgO•Sb2O5 was obtained. In the formulation of fire-resistant cable PVC-plasticate, antimony (III) oxide was replaced by MgO•Sb2O5 and the fire resistance and physical and mechanical properties of the resulting compound were investigated. It is shown that the replacement of antimony (III) oxide in the composition of PVC cable compound MgO•Sb2O5 leads to the production of a compound that is not inferior in its characteristics to the original plastic compound. In particular, the fire resistance of cable PVC-plasticate, standard industrial formulation and with the obtained MgO•Sb2O5, is practically the same (OI=32%). It has been established that the physical and mechanical characteristics of the cable compound, when replacing antimony oxide (III) with MgO•Sb2O5 in the formulation, remain at the level of the original compound, while MgO×Sb2O5 will have a less negative impact on the environment.

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 ◽  
2011 ◽  
Vol 46 (2) ◽  
pp. 213-223 ◽  
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.

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 SIFAT FISIKA DAN MEKANIKA KAYU JABON MERAH (Anthocephalus macrophyllus) YANG DITANAM DI WONOGIRI, 2 JAWA TENGAH

2020 ◽  
Vol 8 (3) ◽  
pp. 357
Author(s):  
Fanny Hidayati ◽  
Sri Sunarti ◽  
Teguh Setiaji ◽  
Arif Nirsatmanto
Keyword(s):  
Mechanical Properties ◽  
Mechanical Characteristics ◽  
Bending Strength ◽  
Physical And Mechanical Properties ◽  
Wood Properties ◽  
Dry Density ◽  
Improvement Program ◽  
Average Value ◽  
Central Java ◽  
Physical And Mechanical Characteristics

Red jabon is one of the fast growing species. It is growth well in tropical countries. It has a potential to fulfill the demand of wood. Tree imrovement program of this species has been done in Indonesia. However, information of wood properties related to tree improvement program of red jabon is limited. Therefore, wood properties such as physical and mechanical properties of this species at the progeny trial were needed to clarify. The aims of this research were to clarify the variation of physical and mechanical properties of red jabon from 5 families at5-year-old planted in Wonogiri, Central Java and relationship between air-dry density and mechanical properties. As the result, physical and mechanical properties were varied among 5 families. Based on the results, famili number 85 performed good result of physical and mechanical characteristics, eventhough the physical properties were not highest among 5 families but it was abouf the average value. Furthermore, this family showed the best values of all mechanichal characteristics tested. In addition, air-dry density has highly positive significantcorrelation with mechanical properties (static bending strength and compressive strength parallel to grain), suggesting that mechanical properties can be predicted by air-dried density.

scholarly journals REVIEW OF THE PHYSICAL AND MECHANICAL CHARACTERISTICS OF POLYURETHANE NANOCOMPOSITES

2021 ◽  
pp. 23-31
Author(s):  
R. A. Alekhina ◽  
V. E. Slavkina
Keyword(s):  
Mechanical Properties ◽  
Uniform Distribution ◽  
Mechanical Characteristics ◽  
Physical And Mechanical Properties ◽  
Physicomechanical Properties ◽  
Nano Composites ◽  
Structure And Properties ◽  
Polyurethane Composites ◽  
Polyurethane Nanocomposites ◽  
Physical And Mechanical Characteristics

Polyurethane nanocomposites are promising materials in many industries, they have superior physical and mechanical properties compared to the original polyurethane. This paper presents an analysis of the physical and mechanical properties of polyurethane nano-composites with various types of fillers such as organoclays, carbon nanotubes, polyhedral oligomeric silse-squioxanes, graphene, graphene oxide, polytetrafluoroethylene, and metal nanoparticles. The concentration-dependent effects in changing the structure and properties of polyurethane composites under the influence of the added fillers were also considered. It is noted that the values of physical and mechanical properties are influenced by the uniform distribution of nanofiller particles in the composite and their chemical modification. It was found that with a uniform distribution of nanoparticles in the polymer matrix, the physicomechanical properties of the resulting composites increase.

Determination of the Optimal Structure of a Layered Composite Material for Maximum Strength Characteristics

2021 ◽  
Vol 1040 ◽  
pp. 124-131
Author(s):  
Ljubov Aleksandrovna Bokhoeva ◽  
I.O. Bobarika ◽  
A.B. Baldanov ◽  
Vitaly Evdokimovich Rogov ◽  
Anna S. Chermoshentseva
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Mechanical Characteristics ◽  
Minimum Weight ◽  
Layered Composite ◽  
Number Of Layers ◽  
Reinforcing Material ◽  
Intensive Development ◽  
Physical And Mechanical Characteristics

Due to the intensive development of composite materials and technologies for producing parts from them, they are increasingly used in various industries, including the manufacture of products with increased requirements for the characteristics of final products (strength, stiffness, minimum weight, etc.). In this regard, the authors analyzed the possibility to optimize the layered structure of a composite material in order to give it a pronounced predictable anisotropy of properties required for the final product. Thus, the influence of the orientation of the fibers of the reinforcing material in different layers of the package and the number of layers of the package on the physical and mechanical characteristics of the hypothetical product were analyzed. The problem was solved through the example of the development of a wing for a hypothetical UAV.

Changes in physical and mechanical properties of limestone and marble after exposure to different high temperatures

2019 ◽  
Vol 53 (3) ◽  
pp. 378-385
Author(s):  
Weiqiang Zhang ◽  
Chenchen Xu ◽  
Jishi Geng
Keyword(s):  
Mechanical Properties ◽  
Thermal Diffusivity ◽  
High Temperatures ◽  
Mechanical Characteristics ◽  
Heating Temperature ◽  
Physical And Mechanical Properties ◽  
P Wave ◽  
High Temperature Treatment ◽  
Peak Strain ◽  
Physical And Mechanical Characteristics

Under or after high-temperature treatment, the physical and mechanical characteristics of limestone and marble change significantly. This study seeks to understand the effect of high temperatures on physical and mechanical properties (such as density, porosity, permeability, P-wave velocity, thermal diffusivity, elastic modulus, uniaxial compressive strength, peak strain and Poisson's ratio) of limestone and marble. The results indicate that, from room temperature to 300°C, most of the physical and mechanical indices of limestone and marble change relatively little, except for thermal diffusivity. Above 300°C (especially at 400–600°C), physical and mechanical characteristics change significantly, corresponding to the changes to minerals between 400 and 600°C. These results confirm the important link between physical and mechanical properties and heating temperature, and can provide the basis of theory and reference for related engineering.

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 The distribution regularities of structural, physical and mechanical characteristics of the fillings of shredded wood in the bunkers at the gravity movement

2016 ◽  
Vol 6 (3) ◽  
pp. 100-108
Author(s):  
Лозовецкий ◽  
Vyacheslav Lozovetskiy ◽  
Шадрин ◽  
Anatoliy Shadrin ◽  
Лебедев ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Characteristics ◽  
Structural Characteristics ◽  
External Friction ◽  
Experimental Setup ◽  
Analytical Studies ◽  
Physical And Mechanical Characteristics

Described the experimental setup and presents the results of theoretical and experimental analytical studies of structural characteristics (coefficient of fully wood - porosity or the porosity) and physico-mechanical properties (coefficients of internal and external friction) of the materials crushed wood, a generalization which allowed us to obtain the calculated dependences for determination of their size by volume of bunkers axisymmetric geometry.

scholarly journals Theoretical and experimental study of the effect of wollastonite on the physical and mechanical properties of concrete

2021 ◽  
Vol 2094 (2) ◽  
pp. 022077
Author(s):  
S S Dobrosmyslov ◽  
A S Voronin ◽  
Y V Fadeev ◽  
I G Endzhievskaya ◽  
S V Khartov
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Specific Volume ◽  
Mechanical Characteristics ◽  
Bending Strength ◽  
Theoretical Study ◽  
Chemical Interaction ◽  
Physical And Mechanical Properties ◽  
Internal Stresses ◽  
Physical And Mechanical Characteristics

Abstract As part of the work, an experimental and theoretical study of the effect of adding wollastonite on the physical and mechanical characteristics of concrete was carried out. The internal stress was calculated according to Hooke’s law. The change in the specific volume was determined from the change in the volume of the hydrated phase. The calculation of the chemical interaction was carried out within the framework of thermodynamic equilibrium. According to the results of the work, it was shown that the addition of wollastonite leads to a linear decrease in the value of internal stresses, which is consistent with experimental results on the increase in compressive and bending strength.

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