Effect of lime and cement fillers on moisture susceptibility of cold mix asphalt

Singh, Bir; Jain, Shobhit

doi:10.1080/14680629.2021.1976254

Cited by 21 publications

(9 citation statements)

References 13 publications

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“…The main reason of poor moisture resistance in CBEM is the presence of encapsulated water and micro-voids between aggregate-bitumen interface, in which, water may be easily infiltrates and detriments the adhesion bond of aggregate-bitumen interface. The hydration products, produced by incorporation of GGBFS and lime, densify the mix by filling the micro-voids of CBEM (Singh and Jain 2021). These filled micro-voids deaccelerate the infiltration of water in the mix and improved the moisture susceptibility resistance of CBEM.…”

Section: Strength and Moisture Susceptibility Of Cbemmentioning

confidence: 99%

The rutting performance of cold bitumen emulsion mix using ground granulated blast furnace slag and lime as fillers

Prasad,

Suman

2024

Eng. Res. Express

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Rutting is a worldwide recognized distress in bituminous pavement caused by repetitive passage of traffic loads at high temperature. High air voids and poor early strength of cold bitumen emulsion mix (CBEM) can cause rutting deformation even at lower temperatures, making it undesirable to practitioners. The CBEM can be effectively modified by using hydraulic materials as filler. The present study examines the effect of ground granulated blast furnace slag (GGBFS) and lime as fillers on rutting characteristics of CBEM at varying temperatures (i.e., 40, 50, 60oC). The conventional stone dust (SD) filler was partially replaced by GGBFS. For further modification, lime was added in CBEM containing GGBFS. Initially mix were selected for rutting test based on the results obtained by Marshall stability, indirect tensile strength, retained Marshall stability, and tensile strength ratio tests. Based on these results, 80% of GGBFS was optimized for CBEM production. Incorporating 20% lime with 80% GGBFS in CBEM further improved the properties mentioned above. Both mixes were selected for the rutting test, along with CBEM containing 100% SD and CBEM containing 20% lime, which were also selected for comparison purposes. Wheel tracking device was used for rutting test on CBEM at varying temperatures. Based on results, it was found that increasing testing temperature increases the rutting deformation. However, the CBEM containing GGBFS and lime by 80% and 20% of total weight of filler in the mix, respectively, gave better rutting resistance at each testing temperature and provide less temperature sensitivity. So, this paper introduces the blended GGBFS and lime as a new composition in CBEM that provides improved laboratory strength, moisture susceptibility resistance, and rutting resistance.

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Section: Strength and Moisture Susceptibility Of Cbemmentioning

confidence: 99%

The rutting performance of cold bitumen emulsion mix using ground granulated blast furnace slag and lime as fillers

Prasad,

Suman

2024

Eng. Res. Express

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“…At the same time, porous asphalt mixture is useful in reducing the occurrence of glare at night by leaking water on the pavement surface. However, large amount of internal semi-connected void structure prevents drainage [29], raising the risk of moisture damage. Therefore, OGFC-16 asphalt mixture [30,31] is chosen with which to discuss the influence of phosphate tailing powder on water damage resistance, because OGFC will face a bigger challenge on rainy days.…”

Section: Ingredient Replacement In Ogfc Asphalt Mixturementioning

confidence: 99%

Research on Recycling of Phosphorus Tailings Powder in Open-Graded Friction Course Asphalt Concrete

Xiao

et al. 2023

Materials

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The reuse in high-value materials is one of the important resource utilization approaches of phosphorus tailings. At present, a mature technical system has been formed on the reuse of phosphorus slag in building materials, and silicon fertilizers in the extraction of yellow phosphorus. But there is a lack of research on the high-value reuse of phosphorus tailings. In order to make safe and effective utilization of phosphorus tailing resources, this research concentrated on how to solve easy agglomeration and difficult dispersion of phosphorus tailing micro-powder, when it was recycled in road asphalt. In the experimental procedure, phosphorus tailing micro-powder is treated in two methods. One method is to directly add it with different contents in asphalt to form a mortar. Dynamic shear tests were used to explore the effect of phosphorus tailing micro-powder on the high-temperature rheological properties of asphalt influence mechanism of material service behavior. The other method is to replace the mineral powder in asphalt mixture. The effect of phosphate tailing micro-powder on the water damage resistance in open-graded friction course (OGFC) asphalt mixtures was illustrated, based on the Marshall stability test and the freeze–thaw split test. The research results show that the performance indicators of the modified phosphorus tailing micro-powder meet the requirements for mineral powder in road engineering. Compared with standard OGFC asphalt mixtures, the residual stability of immersion and freeze–thaw splitting strength were improved when replace the mineral powder. The residual stability of immersion increased from 84.70% to 88.31%, and freeze–thaw splitting strength increased from 79.07% to 82.61%. The results indicate that phosphate tailing micro-powder has a certain positive effect on the water damage resistance. These performance improvements can be attributed to the larger specific surface area for phosphate tailing micro-powder than ordinary mineral powder, which can effectively adsorb asphalt and form structural asphalt. The research results are expected to support the large-scale reuse of phosphorus tailing powder in road engineering.

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“…Another critical parameter significantly influencing moisture damage is the mineral filler percentage in asphalt mixes [35][36][37]. Mineral fillers are the proportion of blended aggregates in asphalt mixtures that passes through sieve No.…”

Section: Moisture Damage Mechanisms and Common Influential Factorsmentioning

confidence: 99%

“…200 (<0.075 mm) and is suspended in bitumen to form mastic [13,38]. Previous studies indicated that incorporating cementitious types of mineral fillers in asphalt mixes could improve the moisture resistance, stability, and deformation resistance of the mixes [13,15,37,38]. However, increasing the filler contents in asphalt mixes could result in moisture damage.…”

Section: Moisture Damage Mechanisms and Common Influential Factorsmentioning

confidence: 99%

Empirical Model for the Retained Stability Index of Asphalt Mixtures Using Hybrid Machine Learning Approach

Jweihan,

Al-Kheetan,

Rabi

2023

ASI

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Moisture susceptibility is a complex phenomenon that induces various distresses in asphalt pavements and can be assessed by the Retained Stability Index (RSI). This study proposes a robust model to predict the RSI using a hybrid machine learning technique, including Artificial Neural Network (ANN) and Gene Expression Programming. The model is expressed as a simple and direct mathematical function with input variables of mineral filler proportion (F%), water absorption rate of combined aggregate (Ab%), asphalt content (AC%), and air void content (Va%). A relative importance analysis ranked AC% as the most influential variable on RSI, followed by Va%, F%, and Ab%. The experimental RSI results of 150 testing samples of various mixes were utilized along with other data points generated by the ANN to train and validate the proposed model. The model promotes a high level of accuracy for predicting the RSI with a 96.6% coefficient of determination (R2) and very low errors. In addition, the sensitivity of the model has been verified by considering the effect of the variables, which is in line with the results of network connection weight and previous studies in the literature. F%, Ab%, and Va% have an inverse relationship with the RSI values, whereas AC% has the opposite. The model helps forecast the water susceptibility of asphalt mixes by which the experimental effort is minimized and the mixes’ performance can be improved.

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Effect of lime and cement fillers on moisture susceptibility of cold mix asphalt

Cited by 21 publications

References 13 publications

The rutting performance of cold bitumen emulsion mix using ground granulated blast furnace slag and lime as fillers

The rutting performance of cold bitumen emulsion mix using ground granulated blast furnace slag and lime as fillers

Research on Recycling of Phosphorus Tailings Powder in Open-Graded Friction Course Asphalt Concrete

Empirical Model for the Retained Stability Index of Asphalt Mixtures Using Hybrid Machine Learning Approach

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