Experimental Study on Slag-Based Composite Admixture

2012 ◽  
Vol 174-177 ◽  
pp. 354-357
Author(s):  
Ri Hua Zhang ◽  
Xian Jun Guo
Keyword(s):  
Experimental Study ◽  
Composite Materials ◽  
Fly Ash ◽  
High Performance ◽  
High Performance Concrete ◽  
Service Performance ◽  
Raw Material ◽  
Advantages And Disadvantages ◽  
Construction Property ◽  
New Material

Admixture is a new material used for high-performance concrete. It is mainly used to improve the construction property and service performance and the durability of the concrete. At present, admixture is mainly made of a single component such as the slag, fly ash, silica fume, or mixed with a small amount of plaster. Different admixtures have different effects on the concrete and they have both advantages and disadvantages separately. Based on the principle of “Strength Synergistic Effect” of the composite materials, if the different kinds of admixtures are mixed into the concrete with suitable proportion, the advantages can be developed and the disadvantages will be avoided. In this study, the wide sources of admixtures such as slag, fly ash and limestone are used in the composite tests to develop a new kind of composite admixture which uses the slag as main raw material and has better performance.

A Development of the Research on High Performance Concrete Incorporated with High Volume Fly Ash

2006 ◽  
Vol 302-303 ◽  
pp. 26-34
Author(s):  
Feng Xing ◽  
Xiang Yong Guo ◽  
Fa Guang Leng ◽  
Ren Yu Zhang
Keyword(s):  
Fly Ash ◽  
High Performance ◽  
High Performance Concrete ◽  
High Volume ◽  
Raw Material ◽  
Engineering Practice ◽  
Fly Ash Concrete ◽  
Mix Proportion ◽  
High Volume Fly Ash ◽  
And Performance

In this paper, the main characteristic of definition, property, requirement of raw material, mix proportion design and performance improvement of high volume fly ash concrete (for short HVFAC) are summarized. The applications of HVFAC in dam, highway, building and port are introduced. The research results have shown that HVFAC have outstanding properties of physical mechanics, but some problems need to be further studied. It is believed that an operable strict corresponding technical criterion would be set down as soon as possible for engineering practice.

Experimental Study on Growth Mechanism of Green High Performance Concrete Strength

2011 ◽  
Vol 71-78 ◽  
pp. 229-241
Author(s):  
Shi Qi Cui ◽  
Xu Wen Kong ◽  
Can Dong ◽  
Feng Chuan Gu ◽  
Hong Di Lv
Keyword(s):  
Experimental Study ◽  
Fly Ash ◽  
Diffraction Analysis ◽  
Growth Mechanism ◽  
High Performance ◽  
High Performance Concrete ◽  
Concrete Strength ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mineral Powder

Using SEM observation and X-ray diffraction analysis, explore the growth mechanism of green high performance concrete strength, study the microstructure of green high performance concrete as well as the species and state of products, to prove fly ash, mineral powder and additive can greatly enhance the strength, density and durability of concrete, and finally make low-strength concrete satisfy the need of green high performance.

An Experimental Study on the Frost Resistance of High Performance Concrete Using Fly-Ash and Agent

2017 ◽  
Vol 904 ◽  
pp. 179-184
Author(s):  
Seung Jo Lee
Keyword(s):  
Experimental Study ◽  
Compressive Strength ◽  
Fly Ash ◽  
Modulus Of Elasticity ◽  
Dynamic Modulus ◽  
Frost Resistance ◽  
High Performance ◽  
High Performance Concrete ◽  
Strength Increase ◽  
Freeze Thaw

The purpose of this study is to investigate the freeze-thaw resistance, one of the most important durability indicators, of high-performance concrete made of fibers (nylon and polypropylene), AE agent, viscosity agent, and fly ash, an industrial by-product. While FN-1 showed the best freeze-thaw resistance with an about 2.8% relative dynamic modulus of elasticity, PV-2 showed the worst results, with an about 7.4% modulus, in comparison tests with GC. Most of the test samples showed better compressive strength than GC. Especially, N-1 showed the greatest compressive strength increase of 8%. Also, the test samples mixed with FA and PP showed a 2-4% compressive strength increase effect.

An Experimental Study on Mechanical Properties for High Performance Concrete Using Fly-Ash

2013 ◽  
Vol 328 ◽  
pp. 911-915
Author(s):  
Jeong Eun Kim ◽  
Wan Shin Park ◽  
Seong Ho Cho ◽  
Do Gyeum Kim ◽  
Jea Myoung Noh
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Tensile Strength ◽  
Fly Ash ◽  
Nuclear Power ◽  
High Performance ◽  
Ordinary Portland Cement ◽  
High Performance Concrete ◽  
Replacement Ratio ◽  
Four Levels

Fly ash has been used in the construction of nuclear power plant faced with marine environment. The influence of supplementary fly ash on the mechanical properties of high performance concrete (HPC) has been investigated in this study. Selected test variables were fly ash replacement ratio with four levels (0 %, 10%, 20% and 30%) and curing days (28 days, 56 days and 91 days). This paper outlines an experimental study on compressive strength, splitting tensile strength, modulus of elasticity and Poissons ratio of HPC using ordinary Portland cement and fly ash.

scholarly journals Study of the Physical Behavior of a New Composite Material Based on Fly Ash from the Combustion of Coal in an Ultra-Supercritical Thermal Power Plant

2021 ◽  
Vol 5 (6) ◽  
pp. 151
Author(s):  
Mustapha El Kanzaoui ◽  
Chouaib Ennawaoui ◽  
Saleh Eladaoui ◽  
Abdelowahed Hajjaji ◽  
Abdellah Guenbour ◽  
...  
Keyword(s):  
Composite Material ◽  
Fly Ash ◽  
Power Plant ◽  
High Performance ◽  
Thermal Power ◽  
Recovery Process ◽  
Industrial Wastes ◽  
Raw Material ◽  
Polymerization Reaction ◽  
High Performance Composite

Given the amount of industrial waste produced and collected in the world today, a recycling and recovery process is needed. The study carried out on this subject focuses on the valorization of one of these industrial wastes, namely the fly ash produced by an ultra-supercritical coal power plant. This paper describes the use and recovery of fly ash as a high percentage reinforcement for the development of a new high-performance composite material for use in various fields. The raw material, fly ash, comes from the staged combustion of coal, which occurs in the furnace of an ultra-supercritical boiler of a coal-fired power plant. Mechanical compression, thermal conductivity, and erosion tests are used to study the mechanical, thermal, and erosion behavior of this new composite material. The mineralogical and textural analyses of samples were characterized using Scanning Electron Microscopy (SEM). SEM confirmed the formation of a new composite by a polymerization reaction. The results obtained are very remarkable, with a high Young’s modulus and a criterion of insulation, which approves the presence of a potential to be exploited in the different fields of materials. In conclusion, the composite material presented in this study has great potential for building material and could represent interesting candidates for the smart city.

Autogenous Volume Deformation and Creep Properties Analysis of C60 High Performance Concrete and C60 High Strength Concrete

2013 ◽  
Vol 639-640 ◽  
pp. 364-367 ◽  
Author(s):  
Xiao Bo Chen ◽  
Jian Yin ◽  
Wei Min Song
Keyword(s):  
Fly Ash ◽  
High Strength Concrete ◽  
High Performance ◽  
High Performance Concrete ◽  
High Strength ◽  
Engineering Practice ◽  
Volume Deformation ◽  
Creep Properties ◽  
Strength Concrete ◽  
Creep Coefficient

Based on engineering practice, autogenous volume deformation and creep properties of C60 high performance concrete(C60 HPC) and C60 high strength concrete(C60 HSC) were evaluated in the study. The results showed that the cement partly-replaced with fly ash could significantly decrease the creep deformation, creep coefficient and creep degree. In comparison with C60 HSC, the creep coefficient and creep degree of C60 HPC were decreased 17.9％and15.8％ in 28 days, 22.9% and 21.0% in 270 days. For C60 HPC and C60 HSC at the same age, autogenous volume deformation of C60 HPC is greater than that of C60 HSC, but they were both less than 80×10-6 , and the autogenous volume deformation was basically completed in 7 days.

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