Increase In Mechanical Characteristics Research Articles

Investigation of the Resistance to High-Speed Impact Loads of a Heterogeneous Materials Reinforced with Silicon Carbide Fibers and Powder.

Pioneering studies on the additive manufacturing of a cermet heterogeneous material using SiC ceramic fiber were carried out. Unique studies of the damage staging (cratering) and the transition to the destruction of the formed material during high-speed impact created with the help of an electrodynamic mass accelerator have been carried out. It has been shown that the use of ceramic fiber in a metal matrix reduces the impact crater depth by 22% compared to material with ceramic particles. For the first time, the phase composition of the resulting composite was studied using synchrotron radiation. It was shown that, as a result of laser exposure, silicon carbide SiC is dissolved in the titanium matrix with the formation of secondary compounds of the TiC and Ti5Si3C types. It has been established that the use of SiC ceramic fibers leads to their better dissolution, in contrast to the use of SiC ceramic particles, with the formation of secondary phase compounds, and to an increase in mechanical characteristics.

Влияние фрикционной обработки и жидкостной цементации на сопротивление общей коррозии хромоникелевых аустенитных сталей

Currently, to increase the hardness, strength and wear resistance of thermally non-hardenable austenitic chromium-nickel steels, such methods as frictional treatment with a sliding indenter and liquid carburizing have been used. However, along with an effective increase in mechanical characteristics, the application of these types of treatment may be accompanied by a decrease in the corrosion resistance of austenitic steels. Therefore, it is reasonable to study the influence of frictional treatment and liquid carburizing on the general corrosion resistance of Cr–Ni austenitic steels. In this work, the surface microhardness of the 12Cr18Ni10Ti and AISI 321 steels was determined using the recovered indentation method after electropolishing, mechanical grinding, frictional treatment, and liquid carburizing at a temperature of 780 °C. Using scanning electron microscopy and optical profilometry, the authors studied steel surfaces subjected to the specified types of treatment and determined their roughness. The corrosion resistance of steel was studied by testing for general corrosion using the gravimetric method. When testing for general corrosion, it was found that hardening (up to 710 HV 0.025) frictional treatment leads to an increase in the corrosion rate of the 12Cr18Ni10Ti austenitic steel compared to the electropolished state (from km=0.35 g/(m2·h) to km=0.53–0.54 g/(m2·h)). The corrosion rate of the ground steel is km=0.58 g/(m2∙h), while mechanical grinding does not provide a significant increase in the microhardness of the steel under study (from 220 to 240 HV 0.025). It is shown that the corrosion behavior of 12Cr18Ni10Ti steel subjected to various types of treatment is determined by the following factors: the presence/absence of strain-induced α'-martensite in the structure, the quality of the formed surface and, apparently, the dispersion of the formed structure. Liquid carburizing of the AISI 321 austenitic steel leads simultaneously to an increase in its microhardness to 890 HV 0.025 and a certain increase in corrosion resistance compared to fine mechanical grinding. This is related to the fact that carbon embedding atoms stabilize the electronic structure of iron (austenite and martensite), thereby increasing its corrosion resistance.

STRUCTURE AND PROPERTIES OF THERMOPLASTIC PSEUDO-INTERPENETRATING POLYMER NETWORKS BASED ON NATURAL POLY-3-HYDROXYBUTIRATE AND NATURAL RUBBER

Thermoplastic film materials with a structure of pseudo-interpenetrating polymer networks (pseudo-IPNs) were created on the basis of natural semi-crystalline poly-3-hydroxybutyrate (PHB) and natural rubber (NR), the content of the NR was varied from 2 to 40 wt.%. Using the methods of Fourier Transform Infra-Red (FTIR) spectroscopy, scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), structure-properties relationships were studied for PHB/NR thermoplastic pseudo-IPNs at different ratios of the components. Significant non-additive increase in mechanical characteristics compared to the individual PHB was found for PHB/NR pseudo-IPNs samples with a low content (up to 15 wt.%) of NR. For the sample with a content of 5 wt.% NR, the greatest increase (~18.4%) in strength at break was fixed (σb ≈ 22.5 MPa); for a sample with a content of 10 wt.% NR, the largest increase (~ 215%) in elongation at break (εb ≈ 48.8%) was observed. By FTIR spectroscopy, it was found that certain changes in the crystal structure of the PHB matrix occurred in the samples of pseudo-IPNs at increasing the NR content; however, no changes in the chemical structure of the components were detected. The SEM method revealed spherical domains of the dispersed elastomeric NR phase distributed in the PHB matrix in the samples of PHB/NR pseudo-IPNs. These observations evidence the microphase separation of the system components due to their thermodynamic incompatibility. It is worth to note that the sizes of the domains of the dispersed elastomeric phase naturally increased from ~10–20 μm for pseudo-IPNs PHB/NR = 85/15 wt.%, up to ~ 100 μm for PHB/NR = 60/40 wt.%. Using TGA method, it is established that PHB/NR pseudo-IPNs samples are characterized by high resistance to thermo-oxidative destruction, which non-additively increases with increasing the NR content. Destruction of PHB/NR pseudo-IPNs samples occur in two main stages: at I stage (Td ~ 240–285 °С) the main weight loss of the samples is occurred due to the destruction of macromolecules of the PHB matrix; at II stage (Td ~ 320–380 °С) the oxidative destruction of NR component takes place. Calculations have shown that with increasing the NR content, the maximum rate of thermo-oxidative destruction of pseudo-IPNs samples decreases compared to the individual PHB by 5–52 % with increasing the NR content from 2 to 40 wt.%. Therefore, it means that their resistance to thermo-oxidative destruction increases. The results obtained by DSC method have shown that the introduction of NR and changes of the components ratio significantly and non-additively affect all the thermophysical characteristics of the samples studied. This indicates a significant restructuring of the microphase (amorphous and crystalline) structure of pseudo-IPNs synthesized due to the interpenetration of the components into the microphases of each other and the formation of mixed PHB/NR microphases with different ratios of the components.

Thickness Effects on the Martensite Transformations and Mechanical Properties of Nanocrystalline NiTi Wires.

This paper studied the features of the martensitic transformations and mechanical properties of 40, 60, and 90 µm thick NiTi wires with nanocrystalline B2 structures. It was established that the wires were composites and consisted of a TiNi matrix and a TiO2 + TiNi3 surface layer. Structural methods showed that the wire matrix was formed by grains of up to 20 nm in size. The method of measuring the electrical resistivity during cooling and heating revealed a two-stage nature of the martensitic transformation. Cyclic loading-unloading demonstrated that all the samples exhibited superelasticity effects and completely restored their shape when unloaded from a 4-8% relative strain at room temperature. An increase in mechanical characteristics with respect to the wire thickness was experimentally established. This was due to the change in the composition of the TiNi matrix during drawing.

High-hydrophobic ZIF-67@PLA honeycomb aerogel for efficient oil–water separation

The ZIF-67 @PLA honeycomb aerogel was formulated by using the metal–organic frame (MOF) ZIF-67 through physical mixing and heat-induced phase separation interaction. Changing the mass fraction ratio of ZIF-67 in aerogels can effectively adjust the pore size, pore surface unevenness, and specific surface area of pure polylactic acid (PLA) aerogels. In comparison to PLA aerogels, the ZIF-67 @PLA honeycomb aerogels showed greater oil wettability combined with a notable increase in mechanical characteristics. In this paper, the morphology, oil adsorption capacity, oil wettability, oil–water separation ability and sample reuse of composite aerogels were studied in depth. The ZIF-67 @PLA aerogel with 3 wt% ZIF-67 has the highest oil wettability, highest oil–water separation function, maximum specific area and good reusability. Compared to pure PLA, which has a tensile strength and elongation at break of 0.1424 MPa and 13%, ZIF-67 @PLA has a tensile strength and elongation at break of 0.3344 MPa and 15%, respectively. After 20 cycles, the separation flux of ZIF-67 @PLA is still 98% of the initial flux. The experimental results show that the use of MOF as a nanofiller-filled pure PLA aerogel exhibits high oil wettability and has been demonstrated to be an ideal material for high-efficiency oil–water separation.

Influence of metallization on the mechanical properties of polyimide films

The need to obtain and study the properties of metallized polymeric materials is associated with their wide application in space exploration, electronics, and the production of consumer goods. The main directions in the search for new materials are aimed at obtaining composite films with different distributions of the metal phase over the thickness while maintaining the mechanical characteristics. The most promising metallized polymer materials are polyimides with high thermal stability, good dielectric properties, and low expansion coefficient. Therefore, the study of viscosity, strength, and other mechanical characteristics of metallized polymeric materials, the determination of the effect of the coating structure on their mechanical behavior, and the development of methods for predicting their behavior are currently relevant and important tasks. Methods for improving the mechanical properties of polyimide films by silver plating have been studied. The thickness of the metal layer of the polyimide base, which is part of the structure, ranged from 1 to 5 μm. Surface coatings were 80–97% of comparable silver mirrors in the visible and infrared regions. The deformation of the samples was carried out at room temperature on an Instron 5982 universal testing machine in the uniaxial tension mode. As a result of the metallization of the films, a significant increase in mechanical characteristics was observed compared to a pure polyimide film. An increase in ultimate strength by ∆σ = 105 MPa and plasticity by ∆ε = 75% was obtained, which is associated with a change in the structure of metallized films and the conditions of their chemical treatment.

Shape memory effect in hybrid polylactide-based polymer scaffolds functionalized with reduced graphene oxide for tissue engineering

Herein, an extensive characterization of the electrospun PLA-PCL scaffolds was performed to reveal the effect of the reduced graphene oxide (rGO) content (0.7, 1.0 and 1.5 wt%) on the morphology, structure, thermal behavior, and shape memory performance of developed materials. XRD and DSC characterization revealed transformation of semi-crystalline orthorhombic PLA structure to quasi-amorphous for both pure PLA-PCL and hybrid PLA-PCL-rGO composite scaffolds after heating and SME cycle. The addition of rGO promoted the change in the structure of prepared composites, and increase in mechanical characteristics. Electrospun hybrid PLA-PCL scaffolds with rGO are promising composites for tissue engineering applications, such as adaptable implants, due to pronounced SME.

Influence of Wire Geometry on the Mechanical Behavior of the TiNi Design

The present article is aimed at studying the deformation behavior of TiNi wire and knitted metal TiNi mesh under uniaxial tension and revealing the role of wire geometry on their main mechanical characteristics and mechanisms of deformation behavior. The temperature dependence curve of the electrical resistance indicates that a two-stage martensitic transformation of B2→R→B19′ is occurring, and is responsible for the superelasticity effect. The TEM results showed that at room temperature, the TiNi wire has a nanocrystalline structure composed of B2 austenite grains. A change in the deformation mechanism was established under the uniaxial tension, where the TiNi wire exhibits the effect of superelasticity, while the knitted metal TiNi mesh made from this wire is characterized by hyperelastic behavior. Fracturing of the knitted metal TiNi mesh requires significant loads of up to 3500 MPa compared to the fracture load of the TiNi wire. With the uniaxial tension of the wire, which maximally repeats the geometry of the wire in knitted metal mesh, an increase in mechanical characteristics was observed.

Application of Multi-Channel Analysis Surface Waves and Electrical Resistivity Tomography Methods to Identify Weak Zones at University of Mosul, Northern Iraq

Cracks have been developed in a large lecture hall on the University of Mosul Campus. These cracks exist along two sides of the building. Multi Analysis Surface Wave and Electrical Resistivity Tomography surveys were conducted at the surrounding building to investigate the nature and distribution of shallow subsurface soil/rock. The MASW’s data show three layers: the first layer is characterized by low shear wave velocity ranges between 210 and 420 m/s which is attributed to infill materials, the next layer is attributed to a river terrace (fairly competent rock) which has Vs ranging from 430m/s to 840 m/s. It is recognized by a gradual increase in mechanical characteristics as depth increases. In-depth between about 2.5m and 6.0 m the shear wave velocity drops in the top contact of this layer. The causes of low velocity may be due to weathering of the medium because of a sinkhole. The Electrical Resistivity Tomography profile shows four electrical zones, the first zone has 50-70 Ω.m. with a variable thickness from 0.5-1.5 m which indicates infill materials. The second zone has very low resistivity value, and a depth ranges 0.5m - 3.5 m, which might be interpreted to be increased clay, silt and water content (high water-saturated zone). The third zone is characterized by a high-resistivity value (>100 Ω.m) that could be related to a dry conglomerate rock and gravels belong to river terraces. The fourth zone has a low-resistivity value (<20 Ω.m) associated with a water-saturated marl bed. We could be definitively correlated the resistivity and velocity anomalies to sinkhole activity in were identified and characterized using combined geophysical methods. The Multi Analysis Surface Waves and Electrical Resistivity Tomography were shown to complete each other in the evaluation. The variations in Vs (low velocity) and resistivity (conductive zone) within the river terrace were detected and proposed to be indicative of dissolution and the subsidence responsible for structural damage implied by the change in the velocity and resistivity. The roughness of the top terrace surface strongly influences the nature of the velocity and resistivity values. This roughness is suggestive of dissolution or erosion.

Mechanical And Thermal Characteristics Of Polypropylene Reinforced With Spheri-glass-3000 Produced By Twin Screw Extruder

The use of polymer reinforced with fillers has increased in recent years as their properties have improved. The thermoplastic matrix chosen for this study was Polypropylene (PP) and reinforcement as Spheri-glass-3000 (SGS). The melt mixing method was used to produce PP/SGS nanocomposites with the aid of twin-screw-extruder. Test samples was manufactured by injection-molding-machine. The mechanical and thermal properties of the PP/SGS nanocomposites produced have been investigated. Field-emission-scanning- electron-microscope was employed to examine SGS dispersion in the PP matrix. When SGS was added at 2.5 wt. % there was an increase in mechanical characteristics and tvhermal characteristics improved at 7.5 wt. % addition of SGS in PP matrix.

Experimental Investigation on Mechanical Behaviour of Kevlar and Ramie Fibre Reinforced Epoxy Composites

Natural fibre composites have been replacing synthetic fibre composites in practical applications for the last several years because of the features such as low densities, low weight, relatively inexpensive, recyclability, and excellent mechanical qualities unique to the substance. Thus, the current study examines how Kevlar/Ramie/Nano SiC hybrid fibre reinforced composites are made and their mechanical properties, and it compares them to those made using a single natural fibre reinforced composite. It was found that natural fibre composite densities and hardness were all within acceptable ranges by performing composites’ tensile and flexural strength tests. The hand‐lay‐up technique used ASTM standards samples to construct the composite specimens with various fibre weight percentages. Increase in mechanical characteristics was achieved by adding the glass and the epoxy fibres into the epoxy matrix. The hybrid composite’s performance is promising, especially those of individual fibre‐reinforced composites.

Structure and properties of EP741NP heat-resistant nickel alloy produced by selective laser melting

EP741NP alloy samples featuring various types of defects with the volume fraction varying from 0.31 to 0.65 % were produced by the method of selective laser melting (SLM) at various process conditions. The structure of SLM samples was investigated using optical and scanning electron microscopy, and mechanical properties were determined by tensile tests. All investigated SLM samples featured by low strength characteristics due to the metastable single-phase structure formation, as well as structural defects in the form of cracks. To improve mechanical properties, various types of post-processing were carried out including hot isostatic pressing (HIP), heat treatment according to the «solution + aging» (HT) type, and comprehensive processing combining HIP and HT. According to the research results, the influence of various post-processing types on the microstructure and properties of SLM samples were determined. It was established that the use of HIP contributes to a decrease in porosity to 0.04 %, structure recrystallization, and the precipitation of a strengthening intermetallic phase based on Ni3Al (γ ′-phase) in the form of large particles of different sizes forming agglomerates. HT leads to the structure recrystallization and precipitation of a finely dispersed γ ′-phase uniformly distributed in the alloy matrix. In this case, strength characteristics of samples after HIP and HT are approximately at the same level (σв ~ 1250÷1290 MPa), however, the ductility of samples after HT is significantly lower. This is associated with the retention of defects in the structure in the form of cracks and large pores. The maximum increase in mechanical characteristics (σ up to 1460 MPa, δ up to 21.3 %) was recorded during comprehensive post-processing (HIP + HT) that ensures defect elimination and optimal alloy structure formation.

Bioinert coatings of Ti-Ta-N for medical implants obtained by electric explosion spraying and subsequent electron-ion-plasma modification

The purpose of the research was to form a Ti-Ta-N- system bioinert coating on Ti6Al4V alloy surface as well as to study its structure and properties. The main contribution of the research is in the following. Electro-explosion spraying of tantalum coating on VT6 titanium alloy surface was pioneered in the research. After that the processing of the coating by low-energy high-current electron beam and subsequent nitriding was carried out in a single technological cycle. It has been established that a nanocrystalline coating based on tantalum, nitrogen and titanium was formed as a result of the technological operations. The phase composition of the coatings has been detected. The variations in crystal lattice parameters being formed in coating of phases and coherent scallering regions of these phases depending on power density of electron beam have been determined. Structural characteristics of the coatings at nano- and microlevel have been detected. Tests of coatings for nanohardness, the Young modulus, wear resistance and friction factor have been carried out. By all technical characteristics Ti-Ta-N-system coating exceeds titanium of VT6 grade. The cause of the increase in mechanical characteristics of the Ti-Ta-N-system coating is their nanostructural state and strengthening phases. Tests for proliferation activity of fibroplasts and antimicrobial activity have shown better results in comparison with VT6 titanium alloy as well. It is due to escape of vanadium ions from VT6 alloy into nutrient cell medium and their destructive effect on cell cultures. Variations in proliferation and antimicrobial activity develop due to amplification of cell proliferation. A complex of the obtained characteristics makes it possible to recommend Ti-Ta-N-system coating for its application as a bioinert coating on different implants in furure.

Захисно-зміцнювальні покриття на арматурних сталях

A conceptually new technology for the application of aluminum coatings on 18G2C steel by the electrolytically deposited NaF-NaCl - AlF3 ionic melt method has been developed. To solve the tasks set in the work, a set of experimental and computational research methods was used: metallographic analysis, energy dispersion microanalysis, mechanical tests, and calculation of the oxidation rate of samples. The mechanical characteristics of the samples of reinforcing steel were determined on a rupture machine FP-100 at an active capture rate of 2.5 mm / min. The relationship between the rates of electrochemical oxidation of the aluminide coating, its mechanical properties, with the distribution of aluminum in the depth of the samples and its phase composition have been determined. The increase of mechanical characteristics of samples from 18G2S steel with an aluminum covering in comparison with usual reinforcing steel is shown. The sequence of structural-phase changes of metal in the process of aluminide coating is determined and its influence on mechanical and corrosion resistance is determined. Experimental evaluation of the rate of oxidation of 18G2C steel samples with aluminum coating under the conditions of sulfuric acid electrolyte at an electric current of 11 to 18 A has been conducted. The developed technology of electrolytic deposition of aluminum has scientific and practical interest for the construction industry. The developed coating makes it possible to increase the mechanical properties of steel by almost 12% and to increase the corrosion resistance. Keywords: aluminum coatings, 18G2C steel, electrochemical oxidation, electrolytic deposition.

Effect of Processing Parameters on the Structure and Properties of Powder Fe–Al Intermetallic Compounds Obtained by Sintering and Impulse Hot Pressing

The paper examines the effect of high-energy grinding and post-treatment conditions on the structure and physical and mechanical properties of iron aluminide Fe–15 wt.% Al obtained by sintering and impulse hot pressing. It was shown that the grinding of a mixture of iron and aluminum powders in a planetary mill results in the formation of lamellar particles whose morphology is preserved in the alloy structure after sintering and impulse hot pressing. After grinding, sintered intermetallic compounds obtained from powder mixtures demonstrate low physical and mechanical properties due to the low quality of grain boundaries. The use of impulse hot pressing for compaction of samples from milled powders at temperatures of 850–1150°C significantly increases the density of intermetallic compounds compared to sintered materials of a similar composition—from 5 to 6.5 g/cm3. The increase in the temperature of impulse hot pressing contributes to an increase in mechanical characteristics, where the maximum values of bending strength and fracture toughness are 880 MPa and 21 MPa · m0.5, respectively. Subsequent hightemperature annealing (1350–1450°C) leads to an improvement of the quality of grain boundaries with the formation of a predominantly discontinuous grid, coagulation of impurity segregation, and, as a result, to a sharp increase in bending strength and fracture toughness, which are 1400 MPa and 27 MPa · m0.5, respectively. It was shown that the interparticle rupture observed in the samples after impulse hot pressing at relatively low temperatures changes to transcrystalline after hightemperature annealing.

A Study on the Effect of Incorporation of SiC Particles during Friction Stir Welding of Al 5059 Alloy

Friction stir welding (FSW) was performed in the current research on Al 5059 alloy. Nano-sized SiC (n-SiC) particles were incorporated during FSW for improving mechanical characteristics of welds. Effect of tool rotating speed and multiple FSW passes was studied on SiC dispersion, micro structural changes and mechanical characteristics of composite joints. Results reflected that rotational speed and multiple FSW passes have significant impact over the distribution of SiC reinforcement. Further, the pattern of SiC distribution in the base metal strongly affects the micro structural evolution and mechanical characteristics of welds. An increase of ~55% in microhardness values was achieved in the stir zone of composite joint. Correspondingly, higher ultimate tensile strength (342 MPa) value was obtained as compared to base metal (321 MPa). The increase in mechanical characteristics is mainly owing to grain refinement caused by recrystallization and pinning effect of SiC particles. Micro structural study was carried out using metallurgical microscope and dispersion of n-SiC was observed using TEM. The results of mechanical testing of the present study are in strong corroboration with the micro structural analysis.

Preparation and Study of the Properties of Compositions Based on Crumb Rubber and Natural Polysaccharides

Crumb rubber compositions with starch and cellulose were obtained under the action of shear deformations in a closed type mixer (Brabender). It has been shown that the mechanical characteristics of both compositions differ slightly from each other. When the polysaccharide content in the mixture is increased, the elastic modulus grows and the strength and elongation at break are reduced. The addition of polyethylene glycol slightly affects the values of the mechanical parameters. After exposure of the samples in soil, an increase in mechanical characteristics, which is likely to be due to the occurrence of crosslinking of crumb rubber by radicals formed under the influence of the environment, is observed.

Increase of mechanical characteristics of titanium alloy VT3-1 by local laser impact treatment

ABSTRACT The paper discusses the effect of local laser treatment of Titus is a new alloy on the mechanical properties of the material and welded joints. To study the variation of hardness of the machined surface of titanium alloy VT3-1, depending on the processing parameters of pulsed laser radiation. It is shown that if the surface heat treatment the hardness can be increased relative to the base material 2–3 times. To reduce the content material of titanium nitride it is necessary to apply protection treatment zone with argon. Application of laser shock wave treatment also increases surface hardness, but it creates compressive stresses on the surface of the part, which can favourably affect the fatigue characteristics.

Structure and properties of high-entropy alloys based on refractory metals

The features of the formation the structural state and physic-mechanical characteristics of high-entropy alloys based on refractory metals, both in the cast state and in the state of vacuum-arc coatings, are considered. The studies were carried out using scanning electron microscopy methods with energy dispersive elemental analysis, X-ray diffractometry, and determination of the coefficient of thermal expansion, hardness and adhesive strength. It has been established that the basic state of a high-entropy alloy based on Nb and Zr refractory metals is a single-phase solid solution with a bcc crystal lattice. With the formation of nitrides, the type of crystal lattice changes to fcc. The formation of a nanocrystalline textured state in vacuum-arc coatings is accompanied by a significant increase in mechanical characteristics. The highest hardness of 52.9 GPa and high adhesive strength (181.4 N) were achieved in (TiVZrNbHf)N coatings obtained at PN = 2 • 10−3 Torr.

Investigation of Mechanical and Durability Properties of Concrete Influenced by Hybrid Nano Silica and Micro Zeolite

Today, concrete is the most widely used construction material in the world, cement is major component of concrete. Consuming energy in cement industry is very high and CO2 emissions generated during the production of Portland cement has serious environmental threatens. Therefore utilize of pozzolanic material as a supplementary cementitious material has a direct relationship with sustainable development. In this investigation, 2% Nano Silica and 5, 8 and 10% Micro Zeolite (by weight percent) replaced Portland cement constitutes and standard cylindrical specimens were prepared from the mixture. Two types of concrete mixture with water to cementitious material ratio (W/(C + P)) of 0.45 and 0.4 were prepared and they were tested after aging for 7, 28 and 90 days. The effect of these additives on mechanical properties (compressive and tensile strength) and durability were investigated by Electrical Resistivity (ER) and Rapid Chloride Penetration Test (RCPT) at the ages 28 and 90 days. Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD) revealed that nano particles could improve quality of concrete. As a result of the tests, increase of mechanical characteristics is not considerable but make significant decrease in penetration of chloride ion and increase electrical resistivity that are appropriate option for controlling of corrosion in reinforced concrete structures.