An Alternate Method to Determine Asphalt Content of Hot Mix Asphalt Using Volumetric Properties

2004 ◽  
Vol 32 (4) ◽  
pp. 11925
Author(s):  
M S Shaheed ◽  
R A Tarefder ◽  
M Zaman
Keyword(s):  
Hot Mix Asphalt ◽  
Volumetric Properties ◽  
Asphalt Content

Control of Volumetric Properties of Hot-Mix Asphalt by Field Management

1996 ◽  
Vol 1543 (1) ◽  
pp. 125-131
Author(s):  
Prithvi S. Kandhal ◽  
Kee Y. Foo ◽  
John A. D'Angelo
Keyword(s):  
Hot Mix Asphalt ◽  
Linear Regression Analysis ◽  
Volumetric Properties ◽  
Production Test ◽  
Independent Variables ◽  
Dependent Variables ◽  
Preceding Work ◽  
Multiple Variable ◽  
Asphalt Content ◽  
Variable Analysis

Significant differences in the volumetric properties of laboratory-designed and plant-produced hot-mix asphalt (HMA) generally exist as demonstrated by FHWA Demonstration Project No. 74. The volumetric properties include voids in the mineral aggregate (VMA) and voids in the total mix (VTM). Guidelines for HMA contractors are needed to reconcile these differences and maintain control of volumetric properties during HMA production. The HMA mix design and field production test data (such as asphalt content, gradation, and volumetric properties) from 24 FHWA demonstration projects were entered into a data base and statistically analyzed. The objective was to identify and, if possible, quantify the independent variables (such as asphalt content and the percentages of material passing the No. 200 and other sieves) that significantly affect dependent variables VMA and VTM. The statistical analysis methods consisted of correlation analysis, stepwise multiple-variable analysis, and linear-regression analysis. On the basis of preceding work, guidelines have been developed for HMA contractors to reconcile the differences between the volumetric properties of the job mix formula and the produced HMA mix.

Performance-based mix design of unmodified and lime-modified hot mix asphalt

2012 ◽  
Vol 39 (7) ◽  
pp. 824-833 ◽  
Author(s):  
Sangyum Lee ◽  
Cheolmin Baek ◽  
Je-Jin Park
Keyword(s):  
Performance Test ◽  
Hot Mix Asphalt ◽  
Permanent Deformation ◽  
Asphalt Mixture ◽  
Fatigue Cracking ◽  
Mix Design ◽  
Direct Tension ◽  
Element Analysis ◽  
Asphalt Content ◽  
National Cooperative

This paper presents the performance evaluation of unmodified and lime-modified hot mix asphalt (HMA) mixtures at varying asphalt content using asphalt mixture performance test developed from National Cooperative Highway Research Program project 9-19 and 9-29 and the viscoelastic continuum damage finite element analysis. Test methods adopted in this study are the dynamic modulus test for stiffness, the triaxial repeated load permanent deformation test for rutting, and the direct tension test for fatigue cracking. The findings from this study support conventional understanding of the effects of asphalt content and lime modification on the fatigue cracking and rutting performance. Finally, the optimum asphalt content for both lime-modified and unmodified mixtures are proposed based on the knowledge gleaned from the performance-based mix design methodology. With additional validation and calibration, the comprehensive methodology described in this paper may serve as the foundation for a performance-based HMA mix design and performance-related HMA specifications.

scholarly journals SIFAT VOLUMETRIK CAMPURAN LASTON MENGGUNAKAN ASPAL MODIFIKASI GETAH PINUS DAN LIMBAH STYROFOAM

2021 ◽  
Vol 7 (1) ◽  
pp. 66-77
Author(s):  
Ratna Yuniarti ◽  
Hasyim Hasyim ◽  
Rohani Rohani ◽  
Desi Widianty
Keyword(s):  
Specific Gravity ◽  
Asphalt Concrete ◽  
Hot Mix Asphalt ◽  
Negative Impact ◽  
Volumetric Properties ◽  
Mineral Aggregate ◽  
Modified Asphalt ◽  
Pine Resin ◽  
Road Pavement

Sifat volumetrik campuran pada laston merupakan salah satu faktor yang menentukan durabilitas (keawetan) lapis perkerasan jalan. Untuk meningkatkan keawetan lapis perkerasan jalan dan mengurangi dampak negatif terhadap lingkungan dapat dilakukan antara lain melalui modifikasi aspal dengan getah pinus dan limbah styrofoam. Tulisan ini bertujuan untuk mengkaji sifat volumetrik campuran laston menggunakan aspal modifikasi getah pinus dan limbah styrofoam tersebut. Sifat volumetrik campuran laston yang dikaji adalah rongga dalam campuran, rongga di antara mineral agregat, rongga terselimuti aspal, density dan bulk specific gravity. Pada penelitian ini digunakan agregat bergradasi rapat yang dicampur dengan aspal modifikasi pada suhu 155 oC dan dipadatkan 75 kali pada kedua sisinya. Pada seluruh benda uji, prosentase limbah styrofoam yang digunakan adalah 6% sedangkan getah pinus sebesar 0%, 1%, 2% dan 3% terhadap berat aspal modifikasi.  Hasil penelitian menunjukkan bahwa campuran laston yang menggunakan aspal modifikasi getah pinus menghasilkan nilai VFB, density dan bulk specific gravity lebih besar serta nilai VIM dan VMA lebih kecil dibandingkan dengan campuran yang menggunakan aspal modifikasi limbah styrofoam. Dengan nilai VIM dan VMA lebih kecil, campuran yang menggunakan aspal modifikasi getah pinus menghasilkan daya ikat lebih kuat sehingga memiliki durabilitas lebih tinggi. Ditinjau dari persyaratan laston sebagai lapis aus pada perkerasan jalan, penggunaan getah pinus dan limbah styrofoam sebagai modifier aspal memenuhi persyaratan volumetrik campuran. Volumetric properties of asphalt concrete is important factor to determine the durability of road pavement. Improvement the durability of road pavement and reducing negative impact of the environment can be done by using modified asphalt. This article aims to know the volumetric properties of  hot mix asphalt using pine resin and waste styrofoam as asphalt modifier. The volumetric properties include voids in mix, voids in the mineral aggregate, voids filled with bitumen, density and bulk specific gravity.  In this study, a continuously graded aggregate was used and mixed with modified asphalt at 155 oC and compacted with 75 blows on both sides. The percentage of waste styrofoam was 6% whereas the percentages of pine resin where  0%, 1%, 2% and 3% by weight of modified asphalt. From the analysis, it can be concluded that asphalt concrete containing pine resin as  modifier strengthen the binding between asphalt and agregate, due to increasing value of voids filled with bitumen (VFB), density and bulk specific gravity. Durability of asphalt concrete using pine resin as modifier was higher than that of asphalt concrete using waste styrofoam because of decreasing value of voids in mix (VIM) and voids in the mineral aggregate (VMA). Based on the specification of  asphalt concrete wearing course, the use of pine resin and waste styrofoam as asphalt modifier has fulfilled volumetric properties requirements.

scholarly journals Performance of Recycled Porous Hot Mix Asphalt with Gilsonite Additive

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Ludfi Djakfar ◽  
Hendi Bowoputro ◽  
Bangun Prawiro ◽  
Nugraha Tarigan
Keyword(s):  
Hot Mix Asphalt ◽  
Coarse Aggregate ◽  
Recycled Concrete ◽  
Concrete Material ◽  
Porous Asphalt ◽  
Vehicle Load ◽  
Local Roads ◽  
Asphalt Content ◽  
Concrete Materials ◽  
Potential Use

The objective of the study is to evaluate the performance of porous asphalt using waste recycled concrete material and explore the effect of adding Gilsonite to the mixture. As many as 90 Marshall specimens were prepared with varied asphalt content, percentage of Gilsonite as an additive, and proportioned recycled and virgin coarse aggregate. The test includes permeability capability and Marshall characteristics. The results showed that recycled concrete materials seem to have a potential use as aggregate in the hot mix asphalt, particularly on porous hot mix asphalt. Adding Gilsonite at ranges 8–10% improves the Marshall characteristic of the mix, particularly its stability, without decreasing significantly the permeability capability of the mix. The use of recycled materials tends to increase the asphalt content of the mix at about 1 to 2% higher. With stability reaching 750 kg, the hot mix recycled porous asphalt may be suitable for use in the local roads with medium vehicle load.

Effect of Aggregate Degradation on Volumetric Properties of Georgia's Hot-Mix Asphalt

2007 ◽  
Vol 1998 (1) ◽  
pp. 123-131 ◽  
Author(s):  
Todd Lynn ◽  
Robert S. James ◽  
Peter Y. Wu ◽  
David M. Jared
Keyword(s):  
Hot Mix Asphalt ◽  
Volumetric Properties

scholarly journals Experimental Assessment of Mineral Filler on the Volumetric Properties and Mechanical Performance of HMA Mixtures

2020 ◽  
Vol 6 (12) ◽  
pp. 2312-2331
Author(s):  
Hanaa Khaleel Alwan Al-Bayati ◽  
Abimbola Grace Oyeyi ◽  
Susan L. Tighe
Keyword(s):  
Mechanical Performance ◽  
Asphalt Binder ◽  
Field Performance ◽  
Hydrated Lime ◽  
Volumetric Properties ◽  
Mineral Filler ◽  
Freezing And Thawing ◽  
Binder Ratio ◽  
Asphalt Content ◽  
Mineral Aggregates

This research is conducted to evaluate the influence of mineral filler on the volumetric properties, mechanical and field performance of Hot Mix Asphalt (HMA). Two mineral filler types, namely, Hydrated Lime (HL) and Dust Plant (DPt) were used. Three filler proportions were utilized greater than 1% which represents the most applicable percentage, especially for HL, used by the Ministry of Transportation Ontario (MTO). The effect of filler on various volumetric properties including Voids In Mineral Aggregates (VMA), Voids Filled With Asphalt (VFA), dust to binder ratio (Dp) is examined. Mechanical and predicted field performance of HMA to the best filler proportion that meets all the MTO limitations is also investigated. The obtained results indicated that the Optimum Asphalt Content (OAC), VMA, and VFA decrease as the filler content is increased. HMA mixtures that includes DPt filler had the higher values of VMA, VFA, and OAC compared to the hydrated lime. The addition of filler with 2.5% percentage is very successful for both filler types due to satisfying all MTO requirements for volumetric properties of HMA. Based on MTO specifications, the addition of 2.0% filler seems to be unsuccessful for both filler types due to lowering the Dp ratio. Mix design with 3.0% filler was also unsuccessful because of the lower value of OAC meaning that the mix is dry and there is insufficient asphalt binder to coat the aggregate particles. Besides, filler type has a significant effect on the mechanical properties of the HMA mixtures. As a filler in HMA mixtures, the utilization of HL as a portion of 2.5 % leads to a significant improvement in mixture resistance to water and freezing and thawing. The mixtures that included HL have a higher cracking resistance, greater stiffness, and a higher fracture stress than the mixtures that included DPt. Furthermore, predicted field performance indicated better outcomes for mixes with HL compared to DPt mixes. Doi: 10.28991/cej-2020-03091619 Full Text: PDF

scholarly journals KARAKTERISTIK MARSHALL QUOTIENT PADA HOT MIX ASPHALT MENGGUNAKAN AGREGAT ALAM SUNGAI OPAK

2019 ◽  
Vol 15 (2) ◽  
pp. 84-91
Author(s):  
Maris Setyo Nugroho
Keyword(s):  
Hot Mix Asphalt ◽  
Road Construction ◽  
National Standard ◽  
Test Results ◽  
Quality Testing ◽  
Asphalt Content ◽  
Natural Aggregates ◽  
The Stability ◽  
Asphalt Quality

 ABSTRACTThe purpose of this study is to determine the Marshall Quotient (MQ) value of hot mix asphalt (HMA), which uses natural aggregates from the Opak river. In addition to the MQ value in this study also examines the value of stability and flow in concrete asphalt mixtures with asphalt content of 6.5%. The research method used was an experimental method in the JPTSP FT UNY road construction laboratory. The testing standard used refers to the Indonesian National Standard (SNI). In addition to testing Marshall values, preliminary testing is also carried out to determine the quality of the material used. Material testing includes aggregate quality testing and asphalt quality testing. Based on the test results, the stability, flow and MQ values were 1177.01 kg, 3.20 mm and 384.05 kg/mm respectively. When compared with the requirements in the RSNI 03-1737-1989, only the flow values do not meet the requirements.Keywords: hot mix asphalt (HMA), stability, flow, marshall quotient ABSTRAK Penelitian ini bertujuan untuk mengetahui nilai Marshall/Marshall Quotient (MQ)dari campuran aspal panas/hot mix asphalt (HMA), yang menggunakan agregat alami dari kali Opak. Selain nilai MQ pada penelitian ini juga mengkaji nilai stabilitas dan kelelehan (flow) pada campuran aspal beton dengan kadar aspal 6,5%. Metode penelitian yang digunakan yaitu metode eksperimental di laboratorium konstruksi jalan JPTSP FT UNY. Standar pengujian yang digunakan mengacu Standar Nasional Indonesia (SNI). Selain pengujian nilai Marshall juga dilakukan pengujian pendahuluan untuk mengetahui mutu material yang digunakan. Pengujian material yang dilakukan meliputi pengujian mutu agregat dan pengujian mutu aspal yang digunakan untuk campuran aspal beton. Bersarkan hasil pengujian diperoleh nilai stabilitas, kelelehan, dan nilai Marshall berturut-turut sebesar 1171,01 kg, 3,20 mm, dan 384,05 kg/mm. Jika dibandingkan dengan persyaratan nilai stabilitas, kelelehan, dan nilai marshal yang tercantum pada RSNI 03-1737-1989, hanya nilai kelehan saja yang tidak memenuhi persyaratan. Kata kunci: hot mix asphalt (HMA), stabilitas, kelelehan, nilai marshall

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