Microscopic analysis and mechanical properties of Recycled Paper Mill Sludge modified asphalt mixture using granite and limestone aggregates

Polymer modification is extensively used in the Kingdom of Saudi Arabia (KSA) because the available asphalt cement does not satisfy the high-temperature requirements. It was widely used in KSA for more than two decades, and there is little information regarding the differences in the performance of different polymers approved for binder modification. Pavement engineers require performance comparisons among various polymers to select the best polymer for modification rather than make their selection based on satisfying binder specifications. Furthermore, the mechanical properties can help select polymer type, producing mixes of better resistance to specific pavement distresses. The study objective was to compare the mechanical properties of the various polymer-modified asphalt (PMA) mixtures that are widely used in the Riyadh region. Control mix and five other mixes with different polymers (Lucolast 7010, Anglomak 2144, Pavflex140, SBS KTR 401, and EE-2) were prepared. PMA mixtures were evaluated through different mechanical tests, including dynamic modulus, flow number, Hamburg wheel tracking, and indirect tensile strength. The results show an improvement in mechanical properties for all PMA mixtures relative to the control mixture. Based on the overall comparison, the asphalt mixture with polymer Anglomk2144 was ranked the best performing mixture, followed by Paveflex140 and EE-2.

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Application of Raw and Composted Recycled Paper Mill Sludge on the Growth of Khaya senegalensis and their Effects on Soil Nutrients and Heavy Metals

International Journal of Agriculture and Biology ◽

10.17957/ijab/15.0061 ◽

2015 ◽

Vol 18 (01) ◽

pp. 52-60

Author(s):

Rosazlin Abdullah ◽

Che Fauziah Ishak ◽

Wan Rasidah Kadir ◽

Rosenani Abu Bakar

Keyword(s):

Heavy Metals ◽

Soil Nutrients ◽

Paper Mill ◽

Recycled Paper ◽

Paper Mill Sludge ◽

Khaya Senegalensis

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Assessment of mechanical properties of rice husk ash modified asphalt mixture

Construction and Building Materials ◽

10.1016/j.conbuildmat.2017.05.127 ◽

2017 ◽

Vol 149 ◽

pp. 350-358 ◽

Cited By ~ 37

Author(s):

Mahyar Arabani ◽

Seyed Amid Tahami

Keyword(s):

Mechanical Properties ◽

Rice Husk ◽

Rice Husk Ash ◽

Asphalt Mixture ◽

Modified Asphalt

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Mechanical Performance Characterization of Lignin-Modified Asphalt Mixture

Applied Sciences ◽

10.3390/app10093324 ◽

2020 ◽

Vol 10 (9) ◽

pp. 3324

Author(s):

Yi Zhang ◽

Xuancang Wang ◽

Guanyu Ji ◽

Zhenyang Fan ◽

Yuchen Guo ◽

...

Keyword(s):

Mechanical Properties ◽

Mechanical Performance ◽

Asphalt Mixture ◽

Fatigue Cracking ◽

Asphalt Mixtures ◽

Bending Test ◽

Cracking Resistance ◽

Moisture Susceptibility ◽

Modified Asphalt ◽

Wheel Loading

Lignin, as a bio-based waste, has been utilized in the asphalt industry due to various advantages. This study aimed to investigate the effects of two lignin products (lignin powder and lignin fiber) on the mechanical properties of asphalt mixtures. The raveling, rutting, thermal and fatigue cracking resistance, and moisture susceptibility of different asphalt mixtures were respectively evaluated by the Cantabro test, wheel loading tracking test, semicircular bending test, four-point beam bending test, and freezing-thaw cyclic test. Results show that asphalt mixture with lignin powder-modified asphalt improved the overall mechanical performance. However, lignin fiber showed contradictory effects on certain mechanical properties, i.e., improved rutting resistance and thermal cracking resistance of asphalt mixture, degraded abrasion resistance, fatigue performance, and moisture stability. Therefore, cautions need to be taken when incorporating lignin fiber into asphalt mixture.

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Influence of Buton Rock Asphalt on the Physical and Mechanical Properties of Asphalt Binder and Asphalt Mixture

Advances in Materials Science and Engineering ◽

10.1155/2018/2107512 ◽

2018 ◽

Vol 2018 ◽

pp. 1-7 ◽

Cited By ~ 3

Author(s):

Yafei Li ◽

Jing Chen ◽

Jin Yan ◽

Meng Guo

Keyword(s):

Mechanical Properties ◽

Asphalt Pavement ◽

Asphalt Binder ◽

Asphalt Mixture ◽

Physical And Mechanical Properties ◽

Mechanical Tests ◽

Service Performance ◽

Modified Asphalt ◽

Wet Process ◽

Modified Asphalt Binder

In order to study the effect of different rock asphalt contents on the physical and mechanical properties of an asphalt binder and asphalt mixture, the physical and mechanical tests and analysis were conducted. An on-site case was investigated to verify the effectiveness of rock asphalt-modified pavement. The results show that the activation treatment can effectively enhance the molecular polarity of Buton rock asphalt. The “wet process” was used to prepare the Buton rock asphalt-modified asphalt binder, and the high-temperature performance and aging resistance were significantly improved. The modified asphalt prepared by mixing 30% rock asphalt shows the optimum balance between service performance and segregation. The on-site full-scale application of the Buton rock asphalt-modified asphalt pavement showed the good workability and service performance. This research demonstrated the ability of rock asphalt improving asphalt pavement on multiscales. It is helpful for the broader application of rock asphalt in asphalt pavement.

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