Comparison of Load-Bearing and Non-Load-Bearing Asphalt Sand and How to Pay its Price in the Road Price Index

Document Type : Scientific - Research

Authors
Mohammad Ali Taghizadeh Shirazi 1
Aref Sanei 2
Maedeh Sefidgari 3
Navid Nadimi 4
M.Reza Zeraati 5
1 Senior Civil Engineer And Secretary Of The Technical Committee Of The Kerman General Directorate Of Highways
2 Senior in Road and Transport University, Kerman
3 PhD student, Transportation Planning Engineering, Education teacher University, Tehran, Iran
4 Associate Professor, Shahid Bahonar University, Kerman, Iran
5 Master of Road and Transportation, Bahoner kerman University, Iran
10.22119/jte.2025.471031.2720
Abstract
By mixing washed natural sand or broken sand or a mixture of these two with pure bitumen, a material called asphalt sand is obtained, which according to the annual price index of road and bond or road management has the highest unit price among other types of asphalt such as binder and topka. Has dedicated itself. According to the general technical specifications of the road, if this asphalt layer is more than ten centimeters higher than the final layer, it has no bearing capacity and can be easily used to fill passive cracks. However, if this asphalt layer is placed at a level of less than ten centimeters compared to the final surface, it will find load-bearing conditions, which must be based on the requirements and regulations of publication 101, it is necessary to think of provisions for that excess of the non-load-bearing condition, which is usually due to the implementation of this The regulatory provisions will also incur costs due to the fact that, unfortunately, there is no item or additional price under the title of asphalt bearing sand in the price list, nor is there an explanation in the introduction of chapter 15 of the price list due to the reasons for the mismatch between the title of the publication and the items in the price list for that presentation. has been This research tries to evaluate this issue and examine this deficiency in relation to providing a solution and distinguishing the nature of the technical regulations and regulations of these two types of asphalt sand from each other on the one hand and proposing an analysis of the price and how to pay it from the road price list. Pay on the other hand. Finally, in addition to concluding and presenting laboratory results and analyzing the price of asphalt bearing sand, three correction methods are proposed under the headings of mountain and river - bearing and non-bearing - and predicting the additional price of mountain or bearing compared to the river and non-bearing row in the price index.
Keywords
Load-Bearing and Non-Load-Bearing Asphalt Sand
Mountain and River Materials
Price Analysis of Work Items
Airport Road and Runway Base Unit Price List
Subjects
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Quarterly Journal of Transportation Engineering
Volume 17, Issue 2 - Serial Number 67
Winter 2026
Pages 5271-5287

  • Receive Date 29 October 2024
  • Revise Date 16 September 2025
  • Accept Date 27 September 2025