scholarly journals Mechanical Characterizations of Oxidizing Steel Slag Soil and Application

2017 ◽  
Author(s):  
Tao Cheng ◽  
Renjie Hu ◽  
Wanhui Xu ◽  
Yi Zhang
Keyword(s):  
Mechanical Properties ◽  
Numerical Simulation ◽  
Electric Furnace ◽  
Practical Problem ◽  
Steel Slag ◽  
Problem Analysis ◽  
Compression Tests ◽  
Optimal Moisture Content ◽  
Eaf Slag ◽  
Furnace Slag

In this paper, the mechanical properties and engineering applicationof electric furnace (EAF) slag mixed soil are investigated.The samples of steel slag are taken from a steel manufacturingcompany in Huangshi, a city of China. The mixed soilwas firstly prepared by mixing the steel slag and clay mixturein different proportions. The optimal moisture content for mixingthe soil is investigated from the experiment through directshear test. Based on three axial compression tests, the optimumsteel slag ratio is determined. Finally, the mechanical propertiesof steel slag mixed soil are tested in a practical engineeringproblem through a numerical simulation. The steel slag mixedsoil is used to replace the original soil of the embankment andcompared with that of the original one. The comparison studyshows that the method proposed in this paper is simple andeffective. Moreover, from the practical problem analysis, theoptimal utilization of electric furnace slag can be achieved.

Mechanical Properties and Microstructure Analysis of Copper Tailings Solidifying with Different Cementitious Materials

2014 ◽  
Vol 878 ◽  
pp. 171-176 ◽  
Author(s):  
Xu Quan Huang ◽  
Hao Bo Hou ◽  
Min Zhou ◽  
Wei Xin Wang
Keyword(s):  
Mechanical Properties ◽  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Calcium Silicate Hydrate ◽  
Steel Slag ◽  
Cementitious Materials ◽  
Cementitious Material ◽  
Hydration Products ◽  
New Type ◽  
Furnace Slag

With new type steel slag-blast furnace slag-fluorgypsum-based cemented material, P O42.5 cement, commonly used cementation agent in China, mechanical properties and microstructure of tailings solidification bodies are studied. The hydration products and morphology tailings concretion body in 60 days are analyzed by SEM and XRD test, which reveals the tailings cementation mechanism solidifying with different cementitious material. Furthermore, a large number of slender bar-like ettringite crystals and filamentous network-like calcium-silicate-hydrate gels bond firmly each other, which is the most important reason why steel slag-blast furnace slag-fluorgypsum base cemented material has the best tailings cementation mechanical properties.

Composition Characteristics of Reconstructed Steel Slag with Electric Furnace Slag

2014 ◽  
Vol 541-542 ◽  
pp. 324-328 ◽  
Author(s):  
Qing Liang Huang ◽  
Chen Chen Gong ◽  
De Li Lou ◽  
Jie Zhang ◽  
Ling Chao Lu
Keyword(s):  
Calcination Temperature ◽  
Electric Furnace ◽  
Hydrofluoric Acid ◽  
Particle Shape ◽  
Steel Slag ◽  
Petrographic Analysis ◽  
Granule Morphology ◽  
Mineral Compositions ◽  
Hexagonal Sheets ◽  
Furnace Slag

Mineral compositions and granule morphology of reconstructed steel slag with electric furnace slag as an adjusting component were discussed. The vitreous content with hydrofluoric acid erosion and petrographic analysis were carried out. The results showed that the vitreous content of steel slag was lower than that of raw and first decreases and then increases as the calcination temperature increases; C3S becomes hexagonal sheets or square columnar with the size of 40 to 60 microns and C2S becomes spherical with size of 20 to 50 microns. Particle shape is more regular and the size is smaller than that of raw.

Workability and Mechanical Properties of Concret with Different Admixtures

2013 ◽  
Vol 325-326 ◽  
pp. 67-70
Author(s):  
Yun Feng Li ◽  
Mi Xue Han ◽  
Li Xu
Keyword(s):  
Mechanical Properties ◽  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Steel Slag ◽  
Mineral Admixtures ◽  
Slag Powder ◽  
Steel Slag Powder ◽  
Furnace Slag

The mineral admixtures mixed into concrete have important effects on concrete performance. The workability and mechanical properties of the concrete are studied with different dosages of admixtures, such as steel slag powder, blast furnace slag powder and fly ash. The results show that fly ash has more advantages in improving the performance of the concrete. When steel slag powder, blast furnace slag powder and fly ash, respectively, replace the amount of cement to 30%, 30%, 20%, the mechanical properties of the concrete are improved significantly.

Mechanical Properties of Concrete with Compound Mineral Admixtures

2013 ◽  
Vol 325-326 ◽  
pp. 55-58
Author(s):  
Yun Feng Li ◽  
Zhi Feng Xu ◽  
Ling Ling Wang
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Blast Furnace Slag ◽  
Steel Slag ◽  
The Other ◽  
Mineral Admixtures ◽  
Mixture Ratio ◽  
Compressive Strength Of Concrete ◽  
Optimal Mixture Ratio ◽  
Furnace Slag

The influence of multi-component composite mineral admixtures on the mechanical properties and workability of concrete is studied in this paper, such as steel slag (SS), blast furnace slag (BFS) and fly ash (FA). Considering the above-mentioned factors, the optimal mixture ratio and substituted amount of composite mineral admixtures replacing equally cement are obtained. The results showed that composite mineral admixtures reduced the early compressive strength of concrete with composite admixtures, but significantly improved the workability and later compressive strength of concrete with composite admixtures. On the other hand, the optimal mixture ratio and substituted amount of double-mixing mineral admixtures are different.

scholarly journals Experimental Study on the Calibration of Microparameters of Dolomite in the Barun Open-Pit Mine on the Basis of the Parallel Bond Model

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Zhiheng Dang ◽  
Zuoming Yin ◽  
Desheng Wang ◽  
Mingyu Fu ◽  
Qi Yin
Keyword(s):  
Mechanical Properties ◽  
Numerical Simulation ◽  
Uniaxial Compression ◽  
Open Pit Mine ◽  
Particle Flow ◽  
Open Pit ◽  
Test Results ◽  
Compression Tests ◽  
Simulation Test ◽  
Bond Model

The microparameter calibration of the particle flow parallel bond model (PBM) is mostly based on a uniaxial compression test. The microparameters calibrated only by uniaxial compression tests cannot be directly used to study the mechanical properties of rocks with surrounding pressure conditions. To analyze the relationship between the macroparameters and microparameters in the model and select appropriate particle flow model parameters, this study conducted a particle flow numerical simulation experiment based on the basic test principles of the uniaxial compression, Brazilian splitting, and triaxial compression tests. An orthogonal experimental design was performed for the calibration of the microparameters of the particle flow PBM, and multifactor analysis of variance was used to screen out the factors that have a considerable influence on the experimental indicators. Regression analysis was performed on the significant influencing factors and test indicators, and the corresponding linear and nonlinear relationships between the macroparameters and microparameters were obtained. Lastly, the microparameters of the model were determined in accordance with the macroparameters of the mechanical test of the Barun open-pit mine dolomite, and a numerical simulation test was conducted. Simulation test results were consistent with the actual test results, thus providing a basis for a subsequent numerical simulation study on the mechanical properties of dolomite.

Physical Simulation of Pipes Production Cycle for Lean Alloyed Pipeline Steel X80

2015 ◽  
Vol 651-653 ◽  
pp. 260-265
Author(s):  
Anton A. Naumov ◽  
Yuriy A. Bezobrazov ◽  
Evgenii V. Chernikov
Keyword(s):  
Mechanical Properties ◽  
Numerical Simulation ◽  
Chemical Composition ◽  
Mechanical Testing ◽  
Physical Simulation ◽  
Pipeline Steel ◽  
Production Cycle ◽  
Continuous Mill ◽  
Compression Tests

Lean alloyed pipeline steel X80 with experimental chemical composition was taken for the present research. Rolling schedules for researched steel were developed for continuous mill 2000 by means of numerical simulation using HSMM, AusEvol+ and AusEvol Pro software. Developed schedules were analyzed in order to choose several of them, which guarantee the required final mechanical properties. The chosen schedules were realized on Gleeble-3800 system by tension-compression tests for experimental chemical composition. Mechanical testing of received samples was made. After that physical simulation of strip flattening, forming, expanding and coating using Gleeble-3800 system was produced and mechanical testing of received samples was made to compare results with samples after rolling simulation and with requirements submitted to pipeline steel X80.

scholarly journals The Possibility of Using Slag for the Production of Geopolymer Materials and Its Influence on Mechanical Performances—A Review

Proceedings ◽  
2020 ◽  
Vol 63 (1) ◽  
pp. 30
Author(s):  
Brăduț Alexandru Ionescu ◽  
Adrian-Victor Lăzărescu ◽  
Andreea Hegyi
Keyword(s):  
Mechanical Properties ◽  
Blast Furnace ◽  
Adverse Effects ◽  
Hazardous Waste ◽  
Blast Furnace Slag ◽  
Steel Slag ◽  
Geopolymer Concrete ◽  
Steel Processing ◽  
Mechanical Performances ◽  
Furnace Slag

All industries produce wastes or byproducts, and if those are not properly managed, they will cause adverse effects on the environment. As the need for steel increases globally, waste from steel processing will also increase. Hazardous waste from steel processing is produced in the form of a coarse, dense aggregate, called steel slag. The aim of this paper is to present the possibility of using steel slag/blast furnace slag in the production of geopolymer concrete and to present the relevant results regarding the influence of this industrial byproduct on the mechanical properties of Geopolymer materials.

Workability and Strength Characteristics of High Performance Concrete with Steel Slag Admixture

2008 ◽  
Vol 400-402 ◽  
pp. 415-419 ◽  
Author(s):  
Yun Feng Li ◽  
Ling Wang ◽  
Yan Yao ◽  
Hui Lin
Keyword(s):  
Mechanical Properties ◽  
Blast Furnace Slag ◽  
High Performance ◽  
High Performance Concrete ◽  
Steel Slag ◽  
Mineral Admixtures ◽  
Slag Powder ◽  
Steel Slag Powder ◽  
Different Types ◽  
Furnace Slag

Workability, mechanical properties and durability of concrete can be greatly improved with the advanced mineral admixtures such as steel slag powder. The workability and mechanical properties of steel slag concrete with different types of steel slag and different dosage of admixtures are studied. The experimental results showed the effect of steel slag powder on concrete performance. When compound mineral admixtures with steel slag powder and blast-furnace slag powder are mixed into concrete, the performance of concrete can be improved further due to the synergistic effect and mutual activation.

Experimental investigation of the mechanical behavior of glass fiber/high fluidity polyamide-based composites for automotive market

2021 ◽  
pp. 073168442110140
Author(s):  
Hossein Ramezani-Dana ◽  
Moussa Gomina ◽  
Joël Bréard ◽  
Gilles Orange
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Mechanical Performance ◽  
Physical And Mechanical Properties ◽  
Ultimate Strain ◽  
Uniaxial Tensile ◽  
Compression Tests ◽  
Automotive Market ◽  
Glass Fiber Reinforced ◽  
Glass Fiber Reinforcement

In this work, we examine the relationships between the microstructure and the mechanical properties of glass fiber–reinforced polyamide 6,6 composite materials ( V f = 54%). These materials made by thermocompression incorporate different grades of high fluidity polyamide-based polymers and two types of quasi-UD glass fiber reinforcement. One is a classic commercial fabric, while the other specially designed and manufactured incorporates weaker tex glass yarns (the spacer) to increase the planar permeability of the preform. The effects of the viscosity of the polymers and their composition on the wettability of the reinforcements were analyzed by scanning electron microscopy observations of the microstructure. The respective influences of the polymers and the spacer on the mechanical performance were determined by uniaxial tensile and compression tests in the directions parallel and transverse to the warp yarns. Not only does the spacer enhance permeability but it also improves physical and mechanical properties: tensile longitudinal Young’s modulus increased from 38.2 GPa to 42.9 GPa (13% growth), tensile strength increased from 618.9 MPa to 697 MPa (3% growth), and decrease in ultimate strain from 1.8% to 1.7% (5% reduction). The correlation of these results with the damage observed post mortem confirms those acquired from analyses of the microstructure of composites and the rheological behaviors of polymers.

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