Papers by Keyword: Blending Ratio

Abstract: Stone Matrix Asphalt (SMA) is regularly and successfully used for surface courses in many countries. In this study SMA was designed using two different local aggregates blending ratios. The aggregate blends were tested for density, abrasion, crushing, water absorption and polishing before used in SMA design. Laboratory testing of the SMA surface mixtures was performed to determine volumetric and mixture specific characteristics. The results and analysis determined that SMA is a good surface meeting the design demands. All mixtures were tested for textural depth and skid resistance performance. It was concluded from this study that different aggregate blending can significantly alter the SMA mixture properties. The limestone and basalt blends can be successfully used to design an anti-slide SMA surface course.

Abstract: The recovery and utilization to building solid waste is the current hot issues in the construction of towns. In this paper, 30 groups of fly ash recycled concrete test cube were designed and produced, through the mechanical performance test research, we analysised the main influence factors to the strength and performances of fly ash regeneration concrete test cube,such as recycled aggregate category, water cement ratio, the admix proportion of recycled aggregate. The test results would lay a solid foundation for the test research and engineering application of recycled concrete.

Abstract: Ten mixed fuels were prepared using soybean biodiesel and 0# diesel oil with different blend ratios (in vol %). The effects of the blending ratio on physical-chemical properties of biodiesel-diesel mixed fuels and engine power were investigated. The results shows that, with the increase of the blending ratio, a increase in gelatine, carbon residue, acidity and ash content is found and a decrease in sulfur content and mechanical impurities appears. Furthermore, no distinct affection of the blending ratio on engine power is found.

Abstract: Trial spinning was done at 11 blending ratios (of Outlast fiber/cotton), namely 0/100, 10/90, 20/80, 30/70, 40/60, 50/50, 60/40, 70/30, 80/20, 90/10 & 100/0. By test, analysis and calculation to the targets of breaking strength, moisture regain, fusion enthalpy, crystallization enthalpy, etc. and curve simulation to them with origin7.5, an unique objective function was set in the way of objective optimization. Then lingo9.0 was applied to determine the optimal blending ratio of Outlast fiber/cotton blending yarn and it was concluded that at about 60% of Outlast fiber content, the ratio is the best, i.e. the blending yarn has the best targets in general.

Abstract: Table tennis bat rubber was prepared by using natural rubber (NR) and butadiene rubber (BR). The effects of the blending ratio of NR and BR, contents of accelerator and sulfur on the performance of rubber racket were studied. The results showed that when under conditions of 160°C, 10min and 15MPa in the curing press, total amount of material is 100 phr .Including the NR/BR ratio was 0.65/0.35 (wt), the content was 90 phr the accelerator of DM/D ratio was 0.382/0.618, the content was 2.5 phr and the content of sulfur was 2.5 phr, the compound had a high vulcanization rate, an excellent physical and mechanical properties and aging performance.

Abstract: The effect of blending ratio and yarn twist multiplier on Polysulfone /Meta-aramid blended yarn properties is studied. Two-factor analysis of variance shows that yarn twist multiplier and blending ration have a significant effect on yarn breaking strength while yarn breaking elongation is affected by yarn twist multiplier considerably. Yarn evenness varies with blending ration delicately. Blending ratio and yarn twist multiplier have little effect on yarn hairiness. Yarn evenness nearly has no change with yarn twist multiplier and yarn breaking elongation remains consistent under different blending ratios. Yarn breaking strength gets higher with Meta-aramid content increasing. When the yarn twist multiplier is small, it’s easy to increase yarn strength by blending high-strength fibers. Yarn breaking elongation gets higher when yarn twist multiplier is larger. Blended yarn evenness gets better with finer Meta-aramid content increasing.

Abstract: Multi-wire sawing process with slurry has been popularly adopted for wafer slicing of silicon substrates for solar cells. This paper is to investigate the chip size estimation for effective blending ratio of mixing slurry of wire sawing. Different combination of slurry has been studied with microscopic pictures of abrasive grits by SEM and distribution of particle size of slurry. The chip size can be estimated by the developed method and then the TTV of sliced substrates is used to evaluate the blending ratio of slurry for cost efficiency of wire sawing. Experimental results indicate that the slurry with certain ratio of reborn grits increases the TTV value of sliced substrates. As the weight percentage of silicon chips is above 6 % for the blending ratio of 50% reborn abrasive grits after sawing run 2, the slurry is suggested to be changed to new slurry for wire sawing. Under this developed rule, the average TTV can be maintained under 0.016 mm for nominal thickness of 200 m silicon substrates. Results of this paper can be used to estimate the feasible blending ratio for maintaining the TTV under the desired specifications of silicon substrates for cost efficiency.

Abstract: Resin matrixes for aeronautic advanced composites based on thermoplastic PEK-C (modified polyetherketone) and blending epoxies of DGEBA (diglycidyl ether of bisphenol A) and TGMDA (tetraglycidyl methylenedianiline) are analyzed by DMTA in this paper. The effects of blending ratios and high-temperature post-curing processes on DMTA properties are investigated. The results show that epoxies exhibit different curing features with the existence of high viscous thermoplastic, by contrarily the neat epoxies systems cure according to a random copolymerization rule. The primary peak of tangent delta of DMTA mainly attributes to segment motions of thermoplastic in a blend and the secondary peak mainly for those of the DGEBA cured networks. The higher the ratio of TGMDA to DGEBA is the more obviously the separation degree of tangent delta peaks adopt. Increasing the amount of TGMDA is helpful for separating of phases in the blends. High temperature post-curing promotes separating of phases. In a blend the continuous phase mainly consists of a mass of thermoplastic and some TGMDA, DGEBA mainly collects in dispersed phases.