scholarly journals Laboratory Evaluation of Ground Tire Rubber in Stone Mastic Asphalt

2004 ◽  
Vol 1 (1) ◽  
pp. 53
Author(s):  
R. Muniandy ◽  
A. A. Selim ◽  
S. Hassim ◽  
H. Omar
Keyword(s):  
Laboratory Evaluation ◽  
Strength Ratio ◽  
Tire Rubber ◽  
Ground Tire Rubber ◽  
Asphalt Cement ◽  
Mastic Asphalt ◽  
Truck Tires ◽  
Dynamic Creep ◽  
The World ◽  
Stone Mastic Asphalt

Stone mastic asphalt (SMA) is a gap-graded mix whereby stiffer asphalt cement is required to bind the stone matrix or arrangement of stones together. Although various asphalt additives are traditionally available, the use of rubber crumbs in SMA is still a new rresearch endeavor. Many countries around the world are facing serious problems on what to do with reject or discarded tires. In the present study, commercial truck tires, containing 70% natural rubber, were ground and pre-blended in 80-100 penetration asphalt for use in SMA mixtures. An assessment was made of the laboratory performance of rubberized SMA in terms of stability, resilent modulus, dynamic creep and tensile strength ratio. It was observed that the performance of SMA with ground tire rubber was for superior as compared to SMA mix with unmodified asphalt. Sulfur and Styrene Butadeline Rubber (SBR) were used in rubberized SMA mixes as additives to test the sensitivity of SMA mixtures. As standard practice a 0.3% newly developed cellulose oil palm fiber was used in SMA to minimize the asphalt drain-down effects. 

scholarly journals Evaluation of Measured and Predicted Resilient Modulus of Rubberized Stone Mastic Asphalt (SMA) Modified with Truck Tire Rubber Powder

2021 ◽  
pp. e00633
Author(s):  
Sajjad Noura ◽  
Abdulnaser M. Al-Sabaeei ◽  
Gailan Ismat Safaeldeen ◽  
Ratnasamy Muniandy ◽  
Alan Carter
Keyword(s):  
Resilient Modulus ◽  
Tire Rubber ◽  
Rubber Powder ◽  
Mastic Asphalt ◽  
Truck Tire ◽  
Stone Mastic Asphalt

Laboratory Evaluation on Steel Slag as Aggregate Replacement in Stone Mastic Asphalt Mixtures

2013 ◽  
Vol 65 (2) ◽  
Author(s):  
Mohd Rosli Hainin ◽  
Gatot Rusbintardjo ◽  
Mohd Azizi Abdul Aziz ◽  
Asmah Hamim ◽  
Nur Izzi Md. Yusoff
Keyword(s):  
Steel Slag ◽  
Asphalt Mixtures ◽  
Laboratory Evaluation ◽  
Mastic Asphalt ◽  
Stone Mastic Asphalt

Laboratory evaluation of stone mastic asphalt containing amorphous carbon powder as filler material

2020 ◽  
Vol 243 ◽  
pp. 118280
Author(s):  
Asghar Habibnejad Korayem ◽  
Hassan Ziari ◽  
Mojtaba Hajiloo ◽  
Milad Abarghooie ◽  
Pourya Karimi
Keyword(s):  
Amorphous Carbon ◽  
Filler Material ◽  
Laboratory Evaluation ◽  
Carbon Powder ◽  
Mastic Asphalt ◽  
Stone Mastic Asphalt

scholarly journals Laboratory Evaluation of the Performance of Stone Mastic Asphalt as an Ungrooved Runway Surface

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 502
Author(s):  
Sean Jamieson ◽  
Greg White
Keyword(s):  
Fatigue Cracking ◽  
Asphalt Mixtures ◽  
Deformation Resistance ◽  
Laboratory Evaluation ◽  
Skid Resistance ◽  
Mastic Asphalt ◽  
Performance Requirements ◽  
Stone Mastic Asphalt ◽  
Asphalt Performance ◽  
Better Than

Many airports are surfaced with grooved Marshall-designed dense graded asphalt. Grooving is required to satisfy regulatory aircraft skid resistance requirements, but introduces the risk of groove-related distress, such as groove closure. Consequently, airports seek an ungrooved runway surface option that performs similarly to dense graded asphalt but allows grooving to be avoided. Stone mastic asphalt is the most viable ungrooved runway surface solution and has been used on runways in Europe and China. However, before being accepted as an ungrooved runway surface in Australia, stone mastic asphalt must be shown to meet regulatory runway aircraft skid resistance requirements, and to otherwise perform similarly to typical dense graded asphalt mixtures for runway surfacing, including deformation resistance, fatigue cracking resistance and durability. Based on laboratory performance-related testing, 10-mm and 14-mm sized stone mastic asphalt mixtures, produced with four different aggregate sources, were found to generally meet the airport asphalt performance requirements. The 14 mm mixture was found to perform better than the 10 mm mixture, particularly regarding surface macrotexture and deformation resistance. It was concluded that airports should consider 14 mm sized stone mastic asphalt as an ungrooved runway surface in the future.

scholarly journals Volumetric Properties of Stone Mastic Asphalt Mixtures Containing Tear Off Shingles

2021 ◽  
Author(s):  
M. Nawaz Panhwer
Keyword(s):  
Void Ratio ◽  
Binder Content ◽  
Asphalt Mixtures ◽  
Mix Design ◽  
Volumetric Properties ◽  
Strength Ratio ◽  
Mastic Asphalt ◽  
Bitumen Content ◽  
Stone Mastic Asphalt ◽  
Air Void

Stone Mastic Asphalt (SMA) is a tough, stable, rut-resistant mixture that relies on stone-to-stone contact to provide strength and a rich mortar binder to provide durability. The design of an SMA is critical in providing an aggregate grading that will be compatible with the high bitumen content that provides durability without binder drainage. This project investigates the use of tear-off shingles in SMA to produce economic mixtures. The mixture containing shingles were compared to control mixes (without shingles), but with fibers at the same level as those mixtures containing shingles. As per Superpave method of mix design all mixes met the air void ratio at N (design) and N (max). SMA mixtures were tested using Marshall Method for stability and flow. Mix design results showed that all required volumetric properties can be achieved with lower binder content if shingles can be added to SMA mixes. The critical property in SMA (the draindown) was controlled and the tensile strength ratio was improved by using tear-off shingles.

scholarly journals Volumetric Properties of Stone Mastic Asphalt Mixtures Containing Tear Off Shingles

2021 ◽  
Author(s):  
M. Nawaz Panhwer
Keyword(s):  
Void Ratio ◽  
Binder Content ◽  
Asphalt Mixtures ◽  
Mix Design ◽  
Volumetric Properties ◽  
Strength Ratio ◽  
Mastic Asphalt ◽  
Bitumen Content ◽  
Stone Mastic Asphalt ◽  
Air Void

Stone Mastic Asphalt (SMA) is a tough, stable, rut-resistant mixture that relies on stone-to-stone contact to provide strength and a rich mortar binder to provide durability. The design of an SMA is critical in providing an aggregate grading that will be compatible with the high bitumen content that provides durability without binder drainage. This project investigates the use of tear-off shingles in SMA to produce economic mixtures. The mixture containing shingles were compared to control mixes (without shingles), but with fibers at the same level as those mixtures containing shingles. As per Superpave method of mix design all mixes met the air void ratio at N (design) and N (max). SMA mixtures were tested using Marshall Method for stability and flow. Mix design results showed that all required volumetric properties can be achieved with lower binder content if shingles can be added to SMA mixes. The critical property in SMA (the draindown) was controlled and the tensile strength ratio was improved by using tear-off shingles.

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