Effects of Fly Ash Content on the Strength Property of Cement Concrete Pavement

2012 ◽  
Vol 174-177 ◽  
pp. 403-408
Author(s):  
Hong Guo Zhang ◽  
Xiu Shan Wang ◽  
Pei Wen Hao
Keyword(s):  
Fly Ash ◽  
Cement Mortar ◽  
Experimental Tests ◽  
Ash Content ◽  
Concrete Pavement ◽  
Cement Concrete ◽  
Addition Method ◽  
Cement Ratio ◽  
Cement Concrete Pavement ◽  
Mixing Proportion

Using ordinary material, calculating through the external addition method and then adjusting through experimental tests, the mixing proportion of cement mortar is determined. The testing results show that: when the water cement ratio is 0.50, the fly ash content is too large and the strength of cement mortar will sharply decrease with the increase of its content. Therefore, the fly ash content in engineering cannot exceed 30% of the gelled material.

Grouting Material Mix Proportion Test Research of Void the Old Cement Concrete Pavement Slab

2014 ◽  
Vol 912-914 ◽  
pp. 162-167
Author(s):  
Da Wei Lv ◽  
Guan Jun Xu ◽  
Xiao Li Sun
Keyword(s):  
Experimental Studies ◽  
Concrete Pavement ◽  
Service Performance ◽  
Cement Concrete ◽  
Bleeding Rate ◽  
Asphalt Overlay ◽  
Grouting Material ◽  
Mix Proportion ◽  
Cement Concrete Pavement ◽  
Mixing Proportion

The effective treatment of void cement concrete pavement slab through grouting technology is the important premise of ensuring the service performance of asphalt overlay engineer on cement concrete pavement. Based on the current problems of grouting technology, we did experimental studies on the mixing proportion of grout slurry and analyzed the effects of slurry composition and admixture type on mechanical properties including the strength, mobility, viscosity, expansion rate and bleeding rate of the slurry and on the service performance. Based on these, we put forward the control indexes for grouting slurry mix proportion determination which provided guidance for the design and construction quality control of grouting under the old cement concrete pavement slab.

Study for Frost Resistance of Cement Concrete Pavement with NanoSiO2 as Admixture

2014 ◽  
Vol 952 ◽  
pp. 47-50
Author(s):  
Wen Yong Yu ◽  
Ling Sun ◽  
Chen Long Wu ◽  
Chun Hong Shao
Keyword(s):  
Fly Ash ◽  
Frost Resistance ◽  
Plain Concrete ◽  
Concrete Pavement ◽  
Cement Concrete ◽  
Cement Concrete Pavement ◽  
Mixed Concrete

With the study of frost resistance of plain concrete and mixed concrete with fly-ash substituted and mixed concrete with fly-ash substituted and nanoSiO2 as admixture, the outcomes of the test go that the frost resistance of concrete with nanoSiO2 will be increased considerably.

Study for Permeability of Cement Concrete Pavement with Nano-SiO2 as Admixture

2014 ◽  
Vol 584-586 ◽  
pp. 1577-1580
Author(s):  
Ling Sun ◽  
Guang Yuan Qi ◽  
Xiao Qin Zhang ◽  
Xiao Song Zhan
Keyword(s):  
Fly Ash ◽  
Chloride Ion ◽  
Plain Concrete ◽  
Concrete Pavement ◽  
Cement Concrete ◽  
Cement Concrete Pavement

With the study of permeability of plain concrete and concrete mixing with fly-ash and concrete mixing with fly-ash and nanoSiO2 as admixture for resistance to chloride ion, the outcome of the test goes that the permeability of concrete with nanoSiO2 for resistance to chloride ion will be increased considerably.

Study of Fly Ash Cement Concrete Pavement

2017 ◽  
Vol 4 (2) ◽  
pp. 1-6
Author(s):  
Anjali Yadav ◽  
◽  
Nikhil Kumar Yadav
Keyword(s):  
Fly Ash ◽  
Concrete Pavement ◽  
Cement Concrete ◽  
Cement Concrete Pavement

Experimental Study of Sulfate Attack Resistance Performance on Cement Concrete Pavement

2014 ◽  
Vol 505-506 ◽  
pp. 270-273 ◽  
Author(s):  
Ji Feng Liang ◽  
Chao Zhang ◽  
Xin Yu Fang Wang
Keyword(s):  
Fly Ash ◽  
Mass Loss Rate ◽  
Immersion Test ◽  
Sulfate Attack ◽  
Concrete Pavement ◽  
Cement Concrete ◽  
Fly Ash Concrete ◽  
Cement Concrete Pavement ◽  
Resistance Performance

Airport concrete pavement in high latitude northwest area attacked by sulfate of different extent, which influence early strength and ultimate strength of cement concrete. In this paper, the double doped silica fume and fly ash concrete have been made long-term immersion test research. From the mass loss rate, compressive strength and flexural strength, effect on the corrosion resistance are studied with fly ash, silicon ash adding in a composite Portland cement. Methods to improve the performance of sulfate attack resistance are obtained by experiment.

The Influence of the Ash Addition from Thermal Power Plant on the Mechanical, Thermal and Dielectric Characteristics of Mortars

2018 ◽  
Vol 69 (8) ◽  
pp. 2040-2044
Author(s):  
Georgeta Velciu ◽  
Virgil Marinescu ◽  
Adriana Moanta ◽  
Ladislau Radermacher ◽  
Adriana Mariana Bors
Keyword(s):  
Thermal Conductivity ◽  
Fly Ash ◽  
Power Plant ◽  
Cement Mortar ◽  
Thermal Power ◽  
Total Content ◽  
Ash Content ◽  
Dielectric Losses ◽  
Dielectric Characteristics ◽  
Cement Mortars

The influence of fly ash adittion (90 % fraction [ 100 mm) on the cement mortar characteristics was studied. The XRD, XRF, SEM and FTIR determinations indicated that fly ash used has a hollow microstructure of microsphere and cenosphere whose total content in SiO2, Al2O3 and Fe2O3 is 88.63 % and that of CaO and MgO of 8.55 %. The mechanical, thermal and dielectric determinations made on mortar samples with content of fly ash in the 0-40 % range have highlighted fact that the mechanical strength of cement mortars is maximal at 20 %, the increase in fly ash content leads to a decrease in relative density and thermal conductivity as well as and to increased dielectric losses tgd.

Stress Analysis of Cement Concrete Pavement under Overweight Loads

2012 ◽  
Vol 446-449 ◽  
pp. 949-953
Author(s):  
Ya Ni Lu ◽  
Tao Li Xiao
Keyword(s):  
Finite Element ◽  
Regression Analysis ◽  
Finite Element Model ◽  
Element Model ◽  
Concrete Pavement ◽  
The Other ◽  
Tension Stress ◽  
Statistical Regression ◽  
Cement Concrete ◽  
Cement Concrete Pavement

Special load has produced serious damage to the concrete pavement because of the great gross weight and heavy axle load, but the present specification has not mentioned this kind of load. On this occasion, Several conditions of critical load are identified through ANSYS finite element model analysis and the formula through statistical regression analysis to the bottom maximum tension stress is drawn up. Which can not only guide the concrete pavement design under the special load but also the result may be referred by the other kinds of engineering.

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