Effect of Hydrated Lime on Asphalt Matrix Properties and Asphalt Mix Volume Characteristics

2011 ◽  
Vol 374-377 ◽  
pp. 1462-1466
Author(s):  
Wen Feng Yang ◽  
Shao Peng Wu
Keyword(s):  
Hydrated Lime ◽  
Water Stability ◽  
Test Results ◽  
Retention Ratio ◽  
Mastic Asphalt ◽  
Volume Properties ◽  
Matrix Properties ◽  
Asphalt Mix ◽  
Mineral Powder ◽  
Volume Characteristics

Hydrated lime, as additive agent, was applied into asphalt mix to improve water stability. In this paper, asphalt retention ratio (According Schellenberg Leaking Test) and volume properties of asphalt mix containing hydrated lime, cement and conventional limestone mineral powder were comparatively investigated. The effect of hydrated lime on mastic asphalt was estimated using Dynamic Sheer Rheometer (DSR). The test results indicated that the asphalt retention ratio containing hydrated lime is superior to those of cement and mineral powder. At the same temperature, the viscosity and G*/sinδ of mastic asphalt containing hydrated lime increased apparently. To integrate the volume characteristics, asphalt retention ratio and mastic asphalt, the anti-stripping procedure of aggregate pre-damping using hydrated lime has been recommended.

Effect and its Mechanisms of Hydrated Lime on Water Stability of Hot Asphalt Mixture

2013 ◽  
Vol 842 ◽  
pp. 22-26
Author(s):  
Wen Feng Yang
Keyword(s):  
Asphalt Mixture ◽  
Hydrated Lime ◽  
Water Stability ◽  
Test Results

The mechanism that hydrated lime can improve water stability of asphalt mixture was analyzed through contrasting the performance of hydrated lime and ordinary limestone ore filler. The test results indicated that hydrated lime can obviously improve the water stability of asphalt mixture.

Study on Water Stability of Warm Mix Drainage Asphalt with Sasobit

2013 ◽  
Vol 798-799 ◽  
pp. 178-181
Author(s):  
Jing Ya Chen ◽  
Kun Wang
Keyword(s):  
Polyester Fibre ◽  
Asphalt Mixture ◽  
Hydrated Lime ◽  
Water Stability ◽  
Test Results ◽  
Compaction Temperature ◽  
Porous Asphalt ◽  
Quick Lime ◽  
Stability Performance ◽  
Stability Order

To study water stability of Sasobit warm mix drainage asphalt (WMDA) and improve it, OGFC-13 WMA is primarily prepared with polyester fibre and Sasobit. According to the test results of specimens, formed at 5 different compaction temperatures by marshall tests, the optimal compaction temperature is determined. Then, general water stability tests were used to test the water stability performance of 4 kinds of asphalt mixtures, which were porous asphalt mixture of hot mix (OGFC-1),Sasobit WMDA without any anti-stripping agents (OGFC-2), Sasobit WMDA added hydrate lime (OGFC-3) and Sasobit WMDA added hydrated lime with quick lime (OGFC-4).Test results show that optimal compaction temperature is 150°C; water stability order (OGFC-3>OGFC-1>OGFC-2>OGFC-4) shows that using hydrated lime has beneficial yet limited effects to it. Hydrated lime with quick lime should be avoided for its adverse effect.1.5% hydrated lime shows best water stability.

Study on Water Stability of Evotherm® Warm Asphalt Mixture

2013 ◽  
Vol 753-755 ◽  
pp. 819-822
Author(s):  
Kui Li ◽  
De Dong Guo
Keyword(s):  
Asphalt Mixture ◽  
Hydrated Lime ◽  
Asphalt Mixtures ◽  
Water Stability ◽  
Test Results ◽  
Stability Tests ◽  
Compaction Temperature ◽  
Tracking Device ◽  
Wheel Tracking

AC-13C asphalt mixtures were mixing with 3% Evotherm® content and the optimal compaction temperature was determined according to test results of specimens formed at 4 different compaction temperatures by Marshall method. The general water stability tests and Hamburg wheel-tracking device (HWTD) were used to test the water stability of 4 kinds of asphalt mixtures, which were ordinary asphalt mixture, Evotherm® asphalt mixture without adding any anti-stripping agent, Evotherm® asphalt mixture adding liquid anti-stripping agent and Evotherm® asphalt mixture adding hydrated lime. Test results shows that the optimal compaction temperature is about 125°C; and compared to ordinary asphalt mixture, the long-term water stability of Evotherm® asphalt mixture is obviously poor caused by the lower compaction temperature; the addition of either liquid anti-stripping agent or hydrated lime improve the water stability to a great extent; comparatively speaking, addition of hydrated lime is the optimum measure to improve the water stability of Evotherm® warm mixture asphalt.

scholarly journals Evaluation performance of base course mixture containing reclaimed asphalt pavement (RAP)

2018 ◽  
Vol 162 ◽  
pp. 01037 ◽  
Author(s):  
Karim Al helo ◽  
Zaynab Qasim ◽  
Ahmed Majeed
Keyword(s):  
Asphalt Pavement ◽  
Stability Test ◽  
Reclaimed Asphalt Pavement ◽  
Test Results ◽  
Reclaimed Asphalt ◽  
Superpave Gyratory Compactor ◽  
Asphalt Mix ◽  
Asphalt Content ◽  
Base Course ◽  
Durability Performance

This paper presented the effect of addition of Reclaimed Asphalt Pavement (RAP) on performance of mixture with (20%, 30%, 40% and 50%) RAP as proportion of asphalt mix. To compare with virgin mixture marshall flow and stability test was used to evaluated durability performance with (0,1,3, and 7) days immersion and Wheel Truck test was used to evaluated the resist to rutting. The best gradation and optimum asphalt content was selected according to Superpave system. Superpave Gyratory Compactor (SGC) was used to compact mixture with 100-mm diameter. The test results indicated that addition of RAP to mixes showed significant increase on resistance of Durability and Rutting.

Influence of the Type of the Fiber Component of the Stabilizing Additive for Stone Mastic Asphalt Concrete on the Structure of an Organic Binder

2016 ◽  
Vol 835 ◽  
pp. 494-500 ◽  
Author(s):  
Valentina V. Yadykina ◽  
Anatoly M. Gridchin ◽  
Anna Ivanovna Trautvain ◽  
Sergey Sergeyevich Tobolenko
Keyword(s):  
Asphalt Concrete ◽  
Cellulose Fiber ◽  
Organic Binder ◽  
Fiber System ◽  
Adsorption Activity ◽  
Mastic Asphalt ◽  
Needle Penetration ◽  
Plastic Strength ◽  
Asphalt Mix ◽  
Stone Mastic Asphalt

The evaluation of the quality of the fibrous filler, which is part of stabilizing additives for the production of stone mastic asphalt concrete, can be carried out on the basis of researching its structuring role to a binding material, which was studied by the following parameters: the depth of needle penetration, elongation at 25 and at 0°C, the softening point, cohesion, elasticity and plastic strength. It is found that the fiber made of high-density microporous cellulose-paper waste have the highest adsorption activity and structuring capacity to the organic binder. Moreover, the adding fiber in amount of 1% of the initial bitumen weight allows forming the more rigid framework of the "tar - cellulose fiber" system, which corresponds to the introduction of 0.5% of stabilizing additive to the stone mastic asphalt mix (SMAM), that is, the amount close to recommended regulations.

Experimental Research of Engineering Properties and Improvement Measures of Ginger-Stone Soil

2012 ◽  
Vol 598 ◽  
pp. 511-515
Author(s):  
Hong Lu Mao ◽  
Pei Zhi Zhuang ◽  
Yi Wu Feng
Keyword(s):  
Fly Ash ◽  
Experimental Research ◽  
Engineering Properties ◽  
Water Stability ◽  
Test Results ◽  
Capillary Action ◽  
Test Compaction ◽  
Compaction Test ◽  
Cbr Test ◽  
Improvement Measures

The compactness is prone to markedly decreased after dampening in the subgrade filled by Ginger-stone soil. To solve this problem, a series of tests have been done on the conventional and improved Ginger-stone soil, such as granule analysis test, compaction test, CBR test and water stability test. The test results indicates that the CBR value of Ginger-stone soil is low and it has a strong capillary action, which make it cannot be directly used for roadbed filling of expressway and first class highway. By adding the lime(3%) and fly ash (9%) into the Ginger-stone soil, the CBR value and water stability of sample are obviously improved, and its control of construction becomes easy, so the improved Ginger-stone soil can be directly used as roadbed filling.

scholarly journals Effects of Asphalt Mix Design Properties on Pavement Performance: A Mechanistic Approach

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Ahmad M. Abu Abdo ◽  
S. J. Jung
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Binder Content ◽  
Mix Design ◽  
Pavement Performance ◽  
Dynamic Shear Modulus ◽  
Test Results ◽  
Analysis Software ◽  
Mechanistic Approach ◽  
Asphalt Mix

The main objective of this study was to investigate the effects of hot mix asphalt material properties on the performance of flexible pavements via mechanistic approach. 3D Move Analysis software was utilized to determine rutting and cracking distresses in an asphalt concrete (AC) layer. Fourteen different Superpave mixes were evaluated by utilizing results of the Dynamic Modulus (|E⁎|) Test and the Dynamic Shear Modulus (|G⁎|) Test. Results showed that with the increase of binder content, the tendency of rutting in AC layer increased. However, with the increase of binder content, the cracking of AC layer lessened. Furthermore, when different binder grades were evaluated, results showed that with the increase of the upper binder grade number, rutting decreased, and with the increase of the lower binder grade number, rutting increased. Furthermore, analysis showed that with the increase of the lower binder grade number, higher percent of bottom up cracks would result. As a result of the analysis, binder grade should not be solely considered for cracking in AC layer; binder content and aggregate structure play a big role. Finally, results illustrated that the mechanistic approach is a better tool to determine the performance of asphalt pavement than commonly used methods.

Research on the Relationship between Clay Content in Aggregate and Water Stability of Rubber Asphalt Mixture

2013 ◽  
Vol 639-640 ◽  
pp. 346-349
Author(s):  
Zhao Bin Xie
Keyword(s):  
Significant Influence ◽  
Asphalt Mixture ◽  
Clay Content ◽  
Water Stability ◽  
Test Results ◽  
Road Engineering ◽  
Stability Performance ◽  
Speed Up ◽  
The Relationship

In order to verify the characterization degree of water stability, research selects some clay content aggregate retrieved from road engineering field to produce rubber asphalt mixture and carry out the water stability test. Test results show that clay content in aggregate has a significant influence on the water stability of rubber asphalt mixture. When the content of clay in aggregate less than 1%, the influence on water stability is smaller; when the clay content exceeds 2%, the decay rate on water stability performance and long term properties obviously speed up, resulted in serious water damage.

scholarly journals Analysis of Nanoindentation Test Results of Asphalt Mixture with Different Gradations

2021 ◽  
Vol 11 (17) ◽  
pp. 7992
Author(s):  
Yunhong Yu ◽  
Gang Xu ◽  
Tianling Wang ◽  
Huimin Chen ◽  
Houzhi Wang ◽  
...  
Keyword(s):  
Material Properties ◽  
Asphalt Mixture ◽  
Test Methods ◽  
Asphalt Mixtures ◽  
Nanoindentation Test ◽  
Test Results ◽  
Before And After ◽  
Mineral Powder ◽  
Powder Content ◽  
Interaction Surface

Nanoindentation has been applied in the field of asphalt mixtures, but, at the nano-scale, changes in the composition of the mixture and material properties can have a significant impact on the results. Therefore, it is necessary to investigate the feasibility of nanoindentation tests on different types of asphalt mixtures with different gradations and the influence of material properties and test methods on nanoindentation results. In this paper, the nanoindentation test results on three kinds of asphalt mixture (AC-13, SMA-13, and OGFC-13) with different aggregate gradations were investigated. The load-displacement curves and moduli obtained from the nanoindentation tests were analyzed. In addition, nanoindentation tests were carried out before and after polishing with different ratios of filler and asphalt (RFA) (0.8–1.6). On this basis, the morphology of asphalt specimens with different RFAs is observed by scanning electron microscopy (SEM) imaging. The results indicate that using the nanoindentation test to characterize the mechanical behavior of asphalt mixture, the confidence level of the dense-graded mixture is low, and non-dense-graded mixtures are used as much as possible. Moreover, results illustrate that the nanoindentation modulus tends to increase as the RFA increases. and the SEM chart shows that the higher the mineral powder content in the mastic, the more complex the bitumen and mineral powder interaction surface, confirming the influence of mineral powder content on the nanoindentation test results. Furthermore, the effect of polishing is almost insignificant.

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