scholarly journals ANALISIS KEMAMPUAN SELF HEALING PADA LAPIS ASPAL BETON DENGAN LIMBAH BUBUTAN BAJA SEBAGAI BAHAN TAMBAH

2021 ◽  
Vol 4 (4) ◽  
pp. 875
Author(s):  
Alida Danar Saputra ◽  
Anissa Noor Tajudin
Keyword(s):  
Steel Fiber ◽  
Steel Production ◽  
Asphalt Mixtures ◽  
The Self ◽  
Bending Test ◽  
Self Healing ◽  
Thermal Camera ◽  
Asphalt Content ◽  
Finished Sample ◽  
Heating Duration

Steel waste is waste generated from a large or small amount of steel production process. The results of steel waste disposal can pollute the environment if not done a good treatment and countermeasure so that it has value benefits. This study uses steel lathe waste additives to determine the self-healing ability of asphalt in the AC-WC mixture. Steel lathe waste used with varying degrees of steel lathe 0%, 0,25%, 0,5%, 0,75%, 1% and asphalt content used by 5,5%. After obtaining the data used in the study, samples were made for asphalt mixtures with varying degrees. Then the finished sample is divided into 4 parts to be tested for temperature rise on each steel lathe mixture using a thermal camera. And tested using a threepoint bending test to determine the ability of asphalt selfhealing in the AC-WC mixture that occurs for 5 cycles with a heating duration of 20 seconds, 40 seconds, 60 seconds. From the results of the research on the content of a mixture of 0% steel lathe proved the sample can do self-healing but the results obtained are not as good as when using variations in the added ingredients of steel fiber mixture 0,25%, 0,5%, 0,75% and 1%. ABSTRAKLimbah baja adalah buangan yang dihasilkan dari suatu proses produksi baja baik dalam jumlah yang besar atau sedikit. Hasil buangan limbah baja dapat mecemari lingkungan apabila tidak dilakukan pengolahan dan penanggulangan yang baik sehingga memiliki nilai manfaat. Penelitian ini menggunakan bahan tambahan limbah bubutan baja untuk dapat mengetahui kemampuan self healing aspal pada campuran AC-WC. Limbah bubutan baja yang digunakan dengan kadar variasi bubutan baja 0%, 0,25%, 0,5%, 0,75%, 1% dan kadar aspal yang dipakai sebesar 5,5%. Setelah didapatkan data yang dipakai dalam penelitian dilakukan pembuatan sampel terhadap campuran aspal dengan variasi kadar. Kemudian sampel yang telah jadi di belah menjadi 4 bagian untuk diuji kenaikan temperatur pada setiap campuran bubutan baja dengan menggunakan kamera thermal. Serta diuji dengan menggunakan alat threepoint bending test untuk mengetahui kemampuan selfhealing aspal pada campuran AC-WC yang terjadi selama 5 siklus dengan durasi pemanasan 20 detik, 40 detik, 60 detik. Dari hasil penelitian pada kadar campuran bubutan baja 0% terbukti sampel dapat melakukan self healing tetapi hasil yang didapatkan tidak sebaik ketika menggunakan variasi bahan tambah campuran serat baja 0,25%, 0,5%, 0,75% dan 1%.

scholarly journals Evaluation of Self-Healing Performance of PE and PVA Concrete Using Flexural Test

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Choonghyun Kang ◽  
Jungwon Huh ◽  
Quang Huy Tran ◽  
Kiseok Kwak
Keyword(s):  
Water Environment ◽  
The Self ◽  
Bending Test ◽  
Self Healing ◽  
Recovery Effect ◽  
Three Point Bending ◽  
Strength Recovery ◽  
Before And After ◽  
Healing Environments ◽  
Pva Fiber

The self-healing performance of PE and PVA concrete was evaluated, by using the three-point bending test with a notch. Four different crack inducement days were applied (7, 28, 49, and 91 days), and the same 21 days of healing period were applied to each case. The self-healing environments were in 20°C water, and in the curing room with 20°C temperature and 60% humidity. The flexural strength and the initial flexural stiffness of before and after healing were compared. As a result, both the strength recovery effect and the stiffness recovery effect decreased with the delay of crack inducement, and specimens in the water environment showed higher healing effect than those in the air environment. PVA fiber showed a relatively greater recovery effect than PE fiber.

Effect of Sodium Alginate Fibers Encapsulating Rejuvenators on the Self-Healing Capability and Cracking Resistance of Asphalt Mixtures

2020 ◽  
Vol 32 (12) ◽  
pp. 04020355
Author(s):  
Farah Zaremotekhases ◽  
Ipshit Ibne Idris ◽  
Marwa M. Hassan ◽  
Louay N. Mohammad ◽  
Ioan I. Negulescu
Keyword(s):  
Sodium Alginate ◽  
Asphalt Mixtures ◽  
The Self ◽  
Self Healing ◽  
Cracking Resistance ◽  
Alginate Fibers

scholarly journals Synthesis and Effect of Encapsulating Rejuvenator Fiber on the Performance of Asphalt Mixture

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1266 ◽  
Author(s):  
Benan Shu ◽  
Shiwen Bao ◽  
Shaopeng Wu ◽  
Lijie Dong ◽  
Chao Li ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
The Self ◽  
Self Healing ◽  
Excellent Thermal Stability ◽  
The Road ◽  
Water Sensitivity ◽  
Road Performance ◽  
Temperature Water

The idea of prolonging the service life of asphalt mixture by improving the self-healing ability of asphalt has received extensive attention in recent years. In view of this, this work synthesized three kinds of encapsulating rejuvenator fibers to improve self-healing properties of asphalt mixtures. A series of characterizations were performed to study the morphology, chemical structure and thermal stability of the three kinds of fibers. Subsequently, the road performance of asphalt mixture containing the fiber were investigated, which included high and low temperature, water sensitivity and fatigue performances. Finally, the self-healing performance of asphalt mixture containing the fiber was investigated by 3PB test. The results revealed that the three kinds of encapsulating rejuvenator fibers were successfully synthesized. The fibers had excellent thermal stability, which met temperature requirements in the mixing and compaction process of asphalt mixtures. Road performance of asphalt mixture containing the fiber met the requirements. Self-healing ability of asphalt mixture containing the fiber was improved. Synergistic action of temperature and rejuvenator could further significantly improve the self-healing ability of the asphalt mixture.

scholarly journals Self-Healing Property of Ultra-Thin Wearing Courses by Induction Heating

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1392 ◽  
Author(s):  
Jiuming Wan ◽  
Yue Xiao ◽  
Wei Song ◽  
Cheng Chen ◽  
Pan Pan ◽  
...  
Keyword(s):  
Induction Heating ◽  
Preventive Maintenance ◽  
Steel Fiber ◽  
Steel Slag ◽  
Heating Time ◽  
Asphalt Mixtures ◽  
Self Healing ◽  
Negative Effect ◽  
Healing Property ◽  
Marshall Stability

Ultra-thin wearing course (UTWC) has been developed in pavement preventive maintenance for many years. However, how to prolong the service life of UTWC still requires further research. This study introduced AC-5 and SMA-5 asphalt mixtures, which can be induction heated. Steel fiber and steel slag were used in the mixtures as additives. Marshall Stability and induction heating property of mixtures were characterized. In addition, self-healing property of UTWC materials had been emphatically conducted. Adding steel fiber in mixtures led to higher Marshall Stability and lower flow value, while steel slag generally showed a negative effect. Induction heating property showed a positive relationship with the additives. Induction heating time was positively correlated to the healing ratio of the mixtures. Induction heating on the mixtures could recover the strength of mixtures to a certain degree. Mixtures with more steel fiber showed a higher healing ratio. Basalt-steel slag based mixtures showed better healing ratios than the basalt based mixtures. The healing ratios of mixtures illustrated a decreasing tendency as the healing cycle increased.

Laboratory Testing of Self-Healing Fibers in Asphalt Mixtures Prepared with Recycled Materials

2019 ◽  
Vol 2673 (4) ◽  
pp. 513-523 ◽  
Author(s):  
Max A. Aguirre ◽  
Marwa M. Hassan ◽  
Sharareh Shirzad ◽  
Samuel Cooper ◽  
Louay N. Mohammad ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Sodium Alginate ◽  
Asphalt Mixtures ◽  
Hollow Fibers ◽  
Bending Test ◽  
Self Healing ◽  
Test Results ◽  
Strength Recovery ◽  
Recycling Agent ◽  
Alginate Fibers

Self-healing products such as hollow fibers filled with a recycling agent present an emerging technology that would enhance an asphalt mixture’s resistance to cracking damage in the long term. The objective of this study was to evaluate the healing efficiency of sodium-alginate fibers containing a recycling agent using asphalt concrete beam specimens. A self-healing experiment was designed and conducted to monitor strength recovery in the damaged specimens using a 3-point bending test during a 6-day healing period under two different environmental curing conditions. In addition, the effects of adding the hollow fibers on the mechanical properties of asphalt mixtures were evaluated by conducting a series of laboratory tests to evaluate the performance against common distress such as permanent deformation, intermediate cracking, and low-temperature cracking. Results of the self-healing experiment test results showed that the addition of sodium-alginate fibers improved the strength recovery of mixtures prepared with unmodified binder. The increase in temperature from 25°C to 50°C during the healing period also resulted in higher strength recovery percentages in all the evaluated mixtures. Furthermore, semi-circular bending test results showed that the addition of fibers enhanced the mechanical properties against fracture at intermediate temperature of mixtures containing recycled asphalt materials.

scholarly journals Evaluation of Autogenous Healing in Flexural Mortar Members by Chloride Ion Penetration Resistance

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1622
Author(s):  
Byoungsun Park ◽  
Youngcheol Choi
Keyword(s):  
Penetration Depth ◽  
Chloride Ion ◽  
The Self ◽  
Bending Test ◽  
Mineral Admixtures ◽  
Self Healing ◽  
Penetration Test ◽  
Subtle Change ◽  
Chloride Ion Penetration ◽  
Ion Penetration

In this study, we investigated the effects of mineral admixtures on the autogenous healing of flexural mortar members through a chloride ion penetration test. The mineral admixtures used were ground granulated blast-furnace slag (GGBS), fly ash, silica fume (SF), clinker binder, and clinker sand. Through a four-point bending test, a crack of approximately 100 μm was induced at the bottom of the flexural mortar member, and the chloride ion penetration depth through the crack was measured to evaluate the self-healing performance. Additionally, we analyzed the correlation between the self-healing performances, which was measured through water flow and water absorption tests. The experimental results showed that the chloride ion penetration depth decreased due to crack healing, and the self-healing performance of the GGBS and SF was the highest. It was found that the subtle change in the self-healing performance was more accurately evaluated by the chloride ion penetration test.

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