Parseh Designers Transportation Research Institute Quarterly Journal of Transportation Engineering 2008-6598 17 2 2025 12 22 Comparison of Load-Bearing and Non-Load-Bearing Asphalt Sand and How to Pay its Price in the Road Price Index Comparison of Load-Bearing and Non-Load-Bearing Asphalt Sand and How to Pay its Price in the Road Price Index 5271 5287 232584 10.22119/jte.2025.471031.2720 FA Mohammad Ali Taghizadeh Shirazi Senior Civil Engineer And Secretary Of The Technical Committee Of The Kerman General Directorate Of Highways 0000-0002-6374-9559 Aref Sanei Senior in Road and Transport University, Kerman Maedeh Sefidgari PhD student, Transportation Planning Engineering, Education teacher University, Tehran, Iran Navid Nadimi Associate Professor, Shahid Bahonar University, Kerman, Iran M.Reza Zeraati Master of Road and Transportation, Bahoner kerman University, Iran Journal Article 2024 10 29 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. 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.

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