Use of the Shear Box Compactor for Porous Asphalt Mix Property Assessment

2018 ◽  
pp. 83-97
Author(s):  
Irina Holleran ◽  
Douglas J. Wilson ◽  
Glynn Holleran ◽  
Lubinda F. Walubita
Keyword(s):  
Porous Asphalt ◽  
Asphalt Mix ◽  
Property Assessment ◽  
Shear Box

The influence of porous asphalt mix design on raveling resistance

2019 ◽  
Author(s):  
Marijana Cuculić ◽  
Aleksandra Deluka Tibljaš ◽  
Fabian Vasić ◽  
Ivana Pranjić
Keyword(s):  
Mix Design ◽  
Porous Asphalt ◽  
Asphalt Mix

EXPERIMENTAL EVALUATION OF ANTI-STRIPPING ADDITIVES ON POROUS ASPHALT MIXTURES

2016 ◽  
Vol 78 (7-2) ◽  
Author(s):  
Nurul Athma Mohd Shukry ◽  
Norhidayah Abdul Hassan ◽  
Mohd Rosli Hainin ◽  
Mohd Ezree Abdullah ◽  
Nor Asniza Mohamed Abdullah ◽  
...  
Keyword(s):  
Resilient Modulus ◽  
Asphalt Mixture ◽  
Hydrated Lime ◽  
Modified Bitumen ◽  
Air Voids ◽  
Porous Asphalt ◽  
Abrasion Loss ◽  
Asphalt Mix ◽  
Strength And Durability ◽  
Permeability Rate

The open structure of porous asphalt mix influences its strength and durability against air, water and clogging materials. These factors cause loss of adhesion between binder-aggregate interface and loss of cohesion within the binder film.  This could lead to stripping problem which contribute to premature failures as well as deterioration in the performance and service life of porous asphalt. Therefore, this study is aimed to evaluate the potential of diatomite as anti-stripping additives in porous asphalt and compared with hydrated lime and Ordinary Portland Cement (OPC). Field Emission Scanning Electron Microscopy (SEM) test and Energy Dispersive X-ray Spectroscopy analysis (EDX) were conducted to investigate the microstructure and chemical composition of the anti-stripping additives. A number of gyratory compacted samples of porous asphalt mixture with Malaysian gradation were prepared. Each sample was incorporated with 2% of anti-stripping additives as filler then mixed with polymer modified bitumen of PG76. The samples were measured for air voids content, permeability rate, resilient modulus and abrasion loss. The results indicate that samples prepared with hydrated lime show higher permeability rate and lower abrasion loss compared to samples with OPC and diatomite. However, the samples prepared with diatomite show enhanced resilient modulus compared to those with hydrated lime and OPC.

scholarly journals INCREASING PERFORMANCE OF ROAD LAYERS FROM POROUS ASPHALT

2020 ◽  
pp. 71-83
Author(s):  
E. V. Uglova ◽  
N. I. Shiryaev
Keyword(s):  
Service Life ◽  
Reaction Rate ◽  
Water Resistance ◽  
Mathematical Planning ◽  
Modified Bitumen ◽  
Porous Asphalt ◽  
Asphalt Mix ◽  
Polymer Modified Bitumen ◽  
Three Factor

Statement of the problem. Studies of the degree of influence of the content of polymer-modified bitumen, adhesive additives and mineral materials of various rocks on the physic-mechanical and operational properties of draining asphalt have been conducted. Results. The results of the mathematical planning of a three-factor experiment are presented in the process of studying the operational properties of porous asphalt. Conclusions. The composition of the draining asphalt mix on mineral materials of various types and types of rocks and polymer-modified bitumen PMB 50/70 with an adhesive additive that provides an increase in the abrasion service life, reaction rate and water resistance has been developed and justified.

Water Quality and Performance Assessment of Porous Asphalt Mix Modified Using Charcoal Powder

2019 ◽  
Vol 1 (2) ◽  
pp. 123-136
Author(s):  
Kavya Mariya Thomas ◽  
Noel Varghese Mathew ◽  
Rajalekshmi P R ◽  
Rajalekshmi Suresh Kumar ◽  
Reebu Zachariah Koshy
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Low Cost ◽  
Binder Content ◽  
Storm Water ◽  
Quality Analysis ◽  
Partial Replacement ◽  
Water Quality Analysis ◽  
Porous Asphalt ◽  
Asphalt Mix

Porous pavements are used to allow infiltration of water for increasing ground water storage. Bio char (Charcoal) is a low cost adsorbent used for the removal of heavy metals and other contaminants. This project examines the possibility of using bio char in porous asphalt mixes and efficiency of the asphalt layer modified with charcoal in removing contaminants from typical storm water. Bio char is added by partial replacement of fine aggregates of size less than 2.36 mm. Preliminary Marshall tests indicated that bio char content of about 1to 2 % is not seriously affecting the properties of porous asphalt mix. Marshall test without charcoal has given the optimum binder content as 5 %. Therefore for the study, samples for Marshall tests were prepared keeping the optimum binder content as 5 % and varying the charcoal content as 1, 1.5 & 2 %. From the drain down, air void, flow and stability requirement it was seen that 1.5 % of charcoal is the optimum. Subsequently for the water quality analysis of water infiltrating through the porous asphalt layer samples are prepared using 1.5 % charcoal. Typical storm water is prepared by adding nitrate & chromium to deionized water. Water quality analysis revealed that charcoal modified asphalt layer can remove 97.2 % nitrate, 56 % of chromium from the storm water, and improve the quality of ground water.

Estimation of permeability of porous asphalt mix

2012 ◽  
Vol 165 (4) ◽  
pp. 303-310 ◽  
Author(s):  
Anubhai Bhargava ◽  
Animesh Das ◽  
Rajesh Srivastava
Keyword(s):  
Porous Asphalt ◽  
Asphalt Mix

scholarly journals PEMANFAATAN MATERIAL LOKAL DALAM PEMBUATAN ASPAL PORUS TIPE AC-WC YANG AMAN DAN RAMAH LINGKUNGAN

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Redaksi Tim Jurnal
Keyword(s):  
Asphalt Concrete ◽  
Future Research ◽  
Porous Asphalt ◽  
Stability Performance ◽  
Local Material ◽  
Fine Aggregates ◽  
Asphalt Mix ◽  
The Stability ◽  
New Generation

Surface of highway pavement is wet during rain and drowned by stormwater. This situation can makes slip of vehicle wheels and causes an accident. Porous asphalt is a new generation in flexible pavement. Porous charactheristic can be obtained by using less fine aggregates comparing the normal one so it has more voids. We can expect the pavement has higher skid resistance and its voids can be functioned as drainage in mix. This type of pavement developement also strongly depends on availability of the approriate local material for that we can produce a good performance porous asphalt which is described in this paper. Consideration of  so many problems can be taken apart, the research is limited in modification design of asphalt concrete wearing course using porous asphalt mix exploits South Sumatera aggregates. After investigatives classification of aggragates, the fine aggregates (sand) can be reduced significantly to obtain a large amount of voids by 6.1% asphalt used. However, this porous structure also causes defect, mainly the stability degradation in mix. So the future research will continue to formularize a better stability performance from pavement variety expected

Performance Tests of Porous Asphalt Mix—A Review

InCIEC 2014 ◽  
2015 ◽  
pp. 1231-1243
Author(s):  
K. A. Masri ◽  
A. K. Arshad
Keyword(s):  
Performance Tests ◽  
Porous Asphalt ◽  
Asphalt Mix

Improving the Performance of Porous Asphalt Road Surfacings

2020 ◽  
pp. 100-110
Author(s):  
Е. В. Углова ◽  
Н. И. Ширяев
Keyword(s):  
Service Life ◽  
Reaction Rate ◽  
Water Resistance ◽  
Mathematical Planning ◽  
Modified Bitumen ◽  
Porous Asphalt ◽  
Asphalt Road ◽  
Asphalt Mix ◽  
Polymer Modified Bitumen ◽  
Three Factor

Постановка задачи. Исследуется степень влияния содержания полимерно-модифицированного битума, адгезионой добавки и минеральных материалов различных горных пород на физико-механические и эксплуатационные свойства дренирующего асфальтобетона. Результаты. Представлены результаты математического планирования трехфакторного эксперимента в процессе исследования эксплуатационных свойств дренирующих асфальтобетонов. Выводы. Разработан и обоснован состав дренирующей асфальтобетонной смеси на минеральных материалах различных видов и типов горной породы и полимерно-модифицированном битуме ПМБ 50/70 с адгезионной добавкой, обеспечивающий повышение срока службы дорожных покрытий за счет оптимизации показателей физико-механических и эксплуатационных свойств асфальтобетона, в том числе истираемости, скорости фильтрации и водостойкость. Statement of the problem. A degree of influence of the content of polymer-modified bitumen, adhesive additives and mineral materials of various rocks on the physical, mechanical and operational properties of porous asphalt is investigated. Results. The results of the mathematical planning of a three-factor experiment are presented in the process of studying the operational properties of porous asphalt. Conclusions. The composition of the porous asphalt mix on mineral materials of various types and types of mining-polymer and polymer-modified bitumen PMB 50/70 with an adhesive additive that provides an increase in the abrasion service life, reaction rate and water resistance has been developed and justified.

scholarly journals Investigation of the Potential Use of Calcium Alginate Capsules for Self-Healing in Porous Asphalt Concrete

Materials ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 168 ◽  
Author(s):  
Shi Xu ◽  
Xueyan Liu ◽  
Amir Tabaković ◽  
Erik Schlangen
Keyword(s):  
Asphalt Concrete ◽  
Calcium Alginate ◽  
Self Healing ◽  
Stiffness Modulus ◽  
Porous Asphalt ◽  
Alginate Capsules ◽  
Asphalt Mix ◽  
X Ray Computed ◽  
Indirect Tensile ◽  
Porous Asphalt Concrete

Improving the healing capacity of asphalt is proving to be an effective method to prolong the service life of an asphalt pavement. The calcium alginate capsules encapsulating rejuvenator have been developed and proved to provide successful localized crack healing in asphalt mastic. However, it is not known whether this self-healing asphalt system will improve healing capacity of a full asphalt mix. To this aim, this paper reports on study which investigate effect of the calcium alginate capsules onto self-healing capacity of the porous asphalt mix. X-ray computed tomography (XCT) was used to visualize the distribution of the capsules in porous asphalt. The effect of the capsules on fracture resistance of porous asphalt concrete was studied by semi-circular bending (SCB) tests. A semi-circular bending and healing programme was carried out to evaluate the healing effect of these capsules in porous asphalt concrete. Indirect Tensile Stiffness Modulus (ITSM) tests were employed in order to investigate the influence of the capsules on the stiffness of the porous asphalt concrete. The results indicate that incorporating calcium alginate capsules significantly improve the healing capacity of porous asphalt concrete without compromising its performance.

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