Experimental Investigation of Dynamic Mechanical Properties of Polyurea-Fly Ash Composites

2011 ◽  
pp. 149-150
Author(s):  
Alireza V. Amirkhizi ◽  
Jing Qiao ◽  
Wiroj Nantasetphong ◽  
Kristin Schaaf ◽  
Sia Nemat-Nasser
Keyword(s):  
Mechanical Properties ◽  
Experimental Investigation ◽  
Fly Ash ◽  
Dynamic Mechanical Properties ◽  
Dynamic Mechanical

scholarly journals Research on the Dynamic Mechanical Properties and Energy Dissipation of Expansive Soil Stabilized by Fly Ash and Lime

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Sheng-quan Zhou ◽  
Da-wei Zhou ◽  
Yong-fei Zhang ◽  
Wei-jian Wang ◽  
Dongwei Li
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Fly Ash ◽  
Expansive Soil ◽  
Dynamic Mechanical Properties ◽  
Test Results ◽  
Absorbed Energy ◽  
Dynamic Mechanical ◽  
Stabilized Soil ◽  
Dynamic Compressive Strength

To probe into the dynamic mechanical properties of expansive soil stabilized by fly ash and lime under impact load, the split-Hopkinson pressure bar (SHPB) test was carried out in this study. An analysis was made on the dynamic mechanical property and final fracture morphology of stabilized soil, and the failure mechanism was also explored from the perspective of energy dissipation. According to the test results, under the impact pressure of 0.2 MPa, plain soil and pure fly ash-stabilized soil exhibit strong plasticity. After the addition of lime, the stabilized soil shows obvious brittle failure. The dynamic compressive strength and absorbed energy of stabilized soil first increase and then decrease with the change of mix proportions. Both the dynamic compressive strength and the absorbed energy reach the peak value at the content of 20% fly ash and 5% lime (20% F + 5% L). In the process of the test, most of the incident energy is reflected back to the incident bar. The absorbed energy of stabilized soil increases linearly with the rise of dynamic compressive strength, while the absorbed energy is negatively correlated with the fractal dimension. The fractal dimension of pore morphology of the plain soil is lower than that of the fly ash-lime combined stabilized soil when it comes to the two different magnification ratios. The test results indicate that the modifier content of 20% F + 5% L can significantly improve the dynamic mechanical properties of the expansive soil.

Study of dynamic mechanical properties and morphological behaviours of fly ash reinforced polypropylene composites

2011 ◽  
Vol 19 (4) ◽  
pp. 338-344 ◽  
Author(s):  
Dilip C. D. Nath ◽  
Sri Bandyopadhyay ◽  
John Rider ◽  
Aibing Yu ◽  
Darryl Blackburn ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Dynamic Mechanical Properties ◽  
Polypropylene Composites ◽  
Dynamic Mechanical

Static and Dynamic Mechanical Properties of Vinylester Resin Matrix Composites Filled with Fly Ash

2006 ◽  
Vol 291 (7) ◽  
pp. 784-792 ◽  
Author(s):  
Dipa Ray ◽  
Debadrita Bhattacharya ◽  
Amar K. Mohanty ◽  
Lawrence T. Drzal ◽  
Manjusri Misra
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Dynamic Mechanical Properties ◽  
Resin Matrix ◽  
Matrix Composites ◽  
Vinylester Resin ◽  
Dynamic Mechanical

Fabrication and Dynamic Mechanical Properties Offly Ash/Epoxy Composites

2007 ◽  
Vol 353-358 ◽  
pp. 1467-1470 ◽  
Author(s):  
Gao Hui Wu ◽  
Jian Gu ◽  
Qiang Zhang ◽  
Xiao Zhao
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Dynamic Mechanical Properties ◽  
Epoxy Composites ◽  
Dynamic Mechanical ◽  
Waste Production ◽  
The Matrix ◽  
Dynamic Elastic Moduli ◽  
Test Specification ◽  
Modified Epoxy

An inexpensive fly ash (FA), which is from a waste production, has been employed to fabricate fly ash/epoxy composites in our work. Three kinds of fly ash with the most probable diameters of 74"m, 119"m and 146"m were filled in the modified epoxy resin (EP). The purpose of this study is to characterize the dynamic mechanical properties of such composites, and the dynamic mechanical behaviors of the composites are investigated in the temperature range from -40 to 150oC using a tension-compression mode. The results indicate that the dynamic elastic moduli for the fly ash/epoxy composites are (1.4~2.0) GPa, and the peak values of loss factor (tanδ) for these composites can reach (0.79~0.90) in the test specification. In addition, a scanning electron microscope (SEM) has been used to observe the distribution of fly ash particles in the matrix, as well as the photographs of fracture surface of composites.

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