The Enhancement Effect of Hydrated Lime on Glassphalt Concrete

2014 ◽  
Vol 670-671 ◽  
pp. 423-427
Author(s):  
Yi Ping Liao ◽  
Heng Shan Wu ◽  
Ling Zhi Yi
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Temperature Region ◽  
Hot Mix Asphalt ◽  
Hydrated Lime ◽  
Enhancement Effect ◽  
Water Stability ◽  
High Temperature Region ◽  
Temperature Performance ◽  
Overall Performance

Adding the glass will make the cohesion property of HMA (Hot Mix Asphalt) worse. we often improve the antistrip performance of conventional HMA by the means of adding hydrated lime. In this article, we compare the effect of two different patterns of adding hydrated lime. The test reveals that: replacing the mineral power with hydrated lime can improve the overall performance of mix; With respect to mixing the hydrated lime with asphalt in advance, the water stability of concrete increase more, if the mineral power is replaced by equivalent; Although it can’t do a favor to the mix’s low temperature performance, mixing the hydrated lime with asphalt in advance can significantly improve the high temperature performance, it can be used in high temperature region while it rains rarely.

Applied Research of the Modifying Agent of Rubber Plastic Composite (MaR) in Asphalt Mixture

2013 ◽  
Vol 477-478 ◽  
pp. 1175-1178
Author(s):  
Ling Zou ◽  
Jing Wei Ne ◽  
Weng Gang Zhang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Asphalt Mixture ◽  
Bending Test ◽  
Water Stability ◽  
Modified Asphalt ◽  
Modifying Agent ◽  
Temperature Performance ◽  
Splitting Test ◽  
Low Temperature Performance

70# and 90# matrix asphalt mixture with MaR were studied through dynamic modulus test, rutting test, freeze-thaw splitting test, bending test to study the applicability of the Modifying agent of rubber plastic compound (MaR) in matrix asphalt mixture.Test results were Compared with SBSI-C modified asphalt mixture.The results indicate that: high-temperature stability of MaR+70# asphalt mixture is as well as SBSI-C modified asphalt mixture,and is bettere than MaR+90# asphalt mixture; water stability of MaR+90# asphalt mixture is bettere than SBSI-C modified asphalt mixture and MaR+70# asphalt mixture; low temperature performance of MaR+90# asphalt mixture is bettere than MaR+70# asphalt mixture, but is worse than modified asphalt mixture SBSI-C ; MaR+70# asphalt mixture can be first used in area of resisting high temperature and rutting, MaR+90# asphalt mixture can be used if the water stability performance and low temperature performance are considered.

scholarly journals The Formation of the Oxides of Carbon by the Pyrolysis of Tobacco

1975 ◽  
Vol 8 (1) ◽  
Author(s):  
R. R. Baker
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
High Temperature ◽  
Low Temperature ◽  
Heating Rate ◽  
Temperature Region ◽  
High Temperature Region ◽  
Heating Rates ◽  
Carbon Oxides ◽  
Decomposition Reactions

AbstractFlue-cured Virginia tobacco has been heated in nitrogen and nitrogen/oxygen mixtures under flow conditions, and the rate of formation of carbon monoxide and carbon dioxide has been determined as a function of temperature, heating rate, and proportion of oxygen in the gas. When the tobacco is heated in nitrogen at heating rates comparable to those in a smouldering cigarette, 27 % of the carbon content of the tobacco is converted to carbon oxides. Both carbon oxides show two distinct formation regions: a low-temperature region (about 100°-450°C), and a high-temperature region (about 550°-900°C). These temperature limits are almost identical to those predicted from studies on the combustion coal of a cigarette burning in air. When tobacco, or the carbonaceous residue remaining after the pyrolysis experiments, is heated in nitrogen / oxygen mixtures, the total amount of carbon converted to carbon monoxide and carbon dioxide is independent of heating rate, but the relative proportions of the two oxides are strongly dependent on heating rate. At the lower heating rate, proportionally less carbon monoxide, and more carbon dioxide, is produced. Under oxidation conditions, about 70 % of both carbon oxides formed in the low-temperature region (100°-450°C) are produced by tobacco decomposition reactions, whereas in the high-temperature region about 10-20 % of the carbon monoxide, and 2-9 % of the carbon dioxide, are produced by tobacco decomposition.

Experimental Research on the Performances of Warm Mix Recycled Asphalt Mixture in Road Application

2011 ◽  
Vol 243-249 ◽  
pp. 4207-4212
Author(s):  
Ji Shu Sun ◽  
Chun Feng Yang ◽  
Zhao Xia Chen ◽  
Hui Ran Pi
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Experimental Research ◽  
Hot Mix Asphalt ◽  
Asphalt Mixture ◽  
Water Stability ◽  
Recycled Asphalt ◽  
Pavement Structures

The effect of sasobit’s quantity exerted on the asphalt viscosity was researched firstly in this paper, and the mixing temperature of warm mix recycled Asphalt mixture was determined. Then, the technical performances of warm mix recycled asphalt mixture on high temperature, low temperature and water stability were studied through systematic experiments. And compared the technical indexes with that of hot mix asphalt. The results showed that sasobit could reduce asphalt viscosity significantly, so it could lower the mixing and compaction temperatures of the recycled asphalt mixture. The technical indexes of warm mix recycled asphalt mixture conform to the current specifications, so it can be used in many pavement structures.

Low-temperature heat capacity and thermal behavior of Zn0.98Co0.02O in the high-temperature region

2009 ◽  
Vol 54 (1) ◽  
pp. 1-5 ◽  
Author(s):  
K. S. Gavrichev ◽  
A. V. Tyurin ◽  
M. A. Ryumin ◽  
A. V. Khoroshilov ◽  
G. D. Nipan ◽  
...  
Keyword(s):  
Heat Capacity ◽  
High Temperature ◽  
Low Temperature ◽  
Thermal Behavior ◽  
Temperature Region ◽  
High Temperature Region ◽  
Temperature Heat ◽  
Low Temperature Heat Capacity

Mix Design and Performance Research on Asphalt Mixture of SUP-20 with Lucobit

2015 ◽  
Vol 713-715 ◽  
pp. 2765-2768
Author(s):  
Ye Mao Zhang ◽  
Kun Wang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Asphalt Mixture ◽  
Performance Comparison ◽  
Mix Design ◽  
Water Stability ◽  
Stability Performance ◽  
Temperature Performance ◽  
And Performance ◽  
Performance Research

To research the grading applicability of Lucobit modifier and make it adapt to China's basic national conditions very well, the gradations of SUP-20 was selected to research mix design and pavement performance in the text. First, the mix design of SUP-20 without Lucobit is researched. Then the performance of SUP-20 is verified including the high temperature, low temperature and water stability performance of common asphalt mixture. At last the performance comparison between SUP-20 asphalt mixture with 7% Lucobit and without is carried out. Results show that the performance of SUP-20 asphalt mixture with 7% Lucobit and without can all meet the requirement. Compared with the performance of SUP-20 asphalt mixture without Lucobit, the low temperature and water stability performance with Lucobit have a little improvement and the high temperature performance improves a lot. So Lucobit modifier can greatly improve the high temperature performance of SUP-20 asphalt mixture.

Low-Temperature and High-Temperature Anomalies in Temperature Shift of Stress-Lifetime Fatigue Curves

2007 ◽  
Vol 567-568 ◽  
pp. 113-116 ◽  
Author(s):  
Jan Kohout ◽  
Stanislav Vĕchet
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Temperature Dependence ◽  
Temperature Region ◽  
Temperature Shift ◽  
Cyclic Creep ◽  
Degradation Mechanisms ◽  
High Temperature Region ◽  
Temperature Dependences ◽  
Straight Lines

Most families of S-N curves determined at various temperatures present certain general regularities on whose basis the Basquin equation describing finite-life S-N curves can be generalized for various temperatures. This equation can be represented by straight lines with common slope if log-log fit for stress vs. temperature dependence is used. Deviations from these straight lines (anomalies) are evidence that additional degradation mechanisms are effective besides fatigue, whose temperature dependences differ from the mentioned temperature dependence of fatigue strength. In high-temperature region it is most often cyclic creep, in low-temperature region athermal processes of plastic deformation can play significant role in fatigue failure.

Research on Separation and Regeneration Aggregate of Recycled Asphalt Mixture Road Performance

2015 ◽  
Vol 1095 ◽  
pp. 276-279
Author(s):  
Xin Feng Zhou ◽  
Xi Juan Xu
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Asphalt Mixture ◽  
Recycled Aggregate ◽  
Water Stability ◽  
Recycled Asphalt ◽  
Aggregate Content ◽  
Temperature Performance ◽  
Road Performance ◽  
Low Temperature Performance

Through the research of different separation and regeneration aggregate content, different types of regenerative high temperature stability, low temperature performance and water stability performance of asphalt mixture comprehensively, the results show that: with the increase of recycled aggregate content, improves the high temperature properties of recycled asphalt mixture, low temperature performance and water stability are reduced, the admixture when regeneration aggregate is 20 ~ 25%, recycled asphalt mixture has good road performance. Key words: road engineering;waste asphalt mixture;separation and regeneration aggregate;road performance

Analysis of Performance of PR.S Asphalt Mixture and Application

2011 ◽  
Vol 284-286 ◽  
pp. 1871-1876
Author(s):  
Yu Hua Peng ◽  
Hui Xing Liu ◽  
Lin Kai Shi
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Middle Layer ◽  
Water Stability ◽  
Temperature Performance ◽  
Marshall Test ◽  
Cracking Performance ◽  
Analysis Of Performance

In order to study the performance of asphalt mixture with PR.S, Marshall test and rutting, low temperature bending, water stability test were done. The results indicated that the additive PR.S played an important role in improving high-temperature anti-rutting performance of asphalt mixture because of the cementation, reinforcement, inter-lock and adsorption function. With the amount of PR.S increasing, high-temperature performance of asphalt mixture increased gradually and low-temperature performance declined a little. In order to decide the appropriate amount of the additive PR.S, the low-temperature anti-cracking performance should be mainly considered when asphalt mixture was designed. The other performance of asphalt mixture with the amount of 0.45% PR.S could also meet the requirements of the specification. Considering its great contribution to anti-rutting, PR.S asphalt mixture was more properly adopted in the middle layer of asphalt pavement.

MODIFIED AMBEGAOKAR–HALPERIN MODEL AND DISSIPATION IN THE POLYCRYSTALLINE Ba2YCu3O7-δ SUPERCONDUCTOR

2004 ◽  
Vol 18 (02n03) ◽  
pp. 99-103 ◽  
Author(s):  
G. L. BHALLA ◽  
PRATIMA ◽  
AMITA MALIK
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Vortex Dynamics ◽  
Temperature Region ◽  
Order Parameter ◽  
High Temperature Region ◽  
Field Dependent

The magnetoresistance curves of polycrystalline Ba 2 YCu 3 O 7-δ samples for H=0, 1050 and 4880 G are analyzed using the modified Ambegaokar–Halperin model. The analysis shows the occurrence of a crossover in the R–T curves at a field dependent temperature T BP , revealing that the dissipation in Ba 2 YCu 3 O 7-δ samples is possibly caused by two different mechanisms: vortex-dynamics in the low temperature region (below T BP ) and the order parameter fluctuations in the high temperature region (above T BP ).

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