Pavement Management Services’ Post

Why is compaction so important for the performance of asphalt pavement? The presence of air voids in bituminous materials plays a significant role in the quality of laid and compacted bitumen. If the air void content is excessively high, it permits the entry of air and water. Furthermore, it accelerates the hardening process of binders, leading to premature weakening of pavements. Additionally, a high air void content can cause differential compaction under the weight of traffic, resulting in the formation of ruts and grooves along the wheel path. Nonetheless, it is essential to maintain a minimum level of air voids to ensure stability during the compaction process and to allow space for bitumen flow during long-term consolidation under traffic loads. It is recommended that designs include enough air voids to accommodate the expansion of the binder during summer and compaction that is caused by road traffic (NAASRA). Failure to do so may result in bleeding, loss of stability, and increased susceptibility to deformation under heavy loads. The infographic below shows the effect of air voids and compaction levels on dense graded asphalt properties. Learn more by reading our latest blog ‘How Compaction Impacts HMA Pavement Performance’ https://lnkd.in/gCD6qC4s #asphalt #construction #civilengineering #pavementmanagementservices

Importance of Compaction in Asphalt pavement..

Although everything starts with a “properly designed and produced asphalt”, the final product of “properly compacted layer” directly effects the service life..

What’s the difference between stripping and ravelling? Stripping is when the bond between asphalt binder and aggregates breaks down, leading to loose aggregates and reduced pavement strength. This may be caused by inadequate aggregate surface chemistry, moisture damage, and overlays on an open-graded surface course. In contrast, ravelling is the gradual deterioration of a HMA layer caused by the displacement of aggregate particles, resulting in a rough pavement surface and exposed aggregates. Ravelling can be due to inadequate compaction of asphalt, using contaminated or deteriorating aggregate, insufficient asphalt in the mixture, excessive heating of the asphalt mix, or the result of constructing a thin layer during cold weather. Here are some suggestions on how to repair stripping and ravelling: → To repair stripping, the affected layer should be removed and replaced with a new layer of asphalt, ensuring that subsurface drainage problems are also fixed if present. → For minor and isolated cases of ravelling, removing the affected pavement and applying a patch is recommended. However, if extensive ravelling occurs, the damaged pavement should be removed, and new material should be overlaid. Before conducting any repairs, consult our pavement engineers to conduct pavement testing to discover the best solution for your pavement: https://buff.ly/3y98yhO #assetmanagement #construction #civilengineering #pavementmanagementservices

What’s the difference between stripping and ravelling? Stripping is when the bond between asphalt binder and aggregates breaks down, leading to loose aggregates and reduced pavement strength. This may be caused by inadequate aggregate surface chemistry, moisture damage, and overlays on an open-graded surface course. In contrast, ravelling is the gradual deterioration of a HMA layer caused by the displacement of aggregate particles, resulting in a rough pavement surface and exposed aggregates. Ravelling can be due to inadequate compaction of asphalt, using contaminated or deteriorating aggregate, insufficient asphalt in the mixture, excessive heating of the asphalt mix, or the result of constructing a thin layer during cold weather. Here are some suggestions on how to repair stripping and ravelling: → To repair stripping, the affected layer should be removed and replaced with a new layer of asphalt, ensuring that subsurface drainage problems are also fixed if present. → For minor and isolated cases of ravelling, removing the affected pavement and applying a patch is recommended. However, if extensive ravelling occurs, the damaged pavement should be removed, and new material should be overlaid. Before conducting any repairs, consult our pavement engineers to conduct pavement testing to discover the best solution for your pavement: https://buff.ly/3ygWH13 #assetmanagement #construction #civilengineering #pavementmanagementservices

Two processes of pavement degradation occurring in different manners, however, both can be controlled with appropriate pavement management and timely intervention.

🛣️ 𝗨𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝗧𝘆𝗽𝗲𝘀 𝗼𝗳 𝗔𝘀𝗽𝗵𝗮𝗹𝘁 𝗖𝗿𝗮𝗰𝗸𝗶𝗻𝗴: 𝗔 𝗖𝗼𝗺𝗽𝗿𝗲𝗵𝗲𝗻𝘀𝗶𝘃𝗲 𝗢𝘃𝗲𝗿𝘃𝗶𝗲𝘄 🚧 Asphalt cracking poses challenges in road construction. Knowing the various types is key: 𝗙𝗮𝘁𝗶𝗴𝘂𝗲 𝗖𝗿𝗮𝗰𝗸𝗶𝗻𝗴 (𝗔𝗹𝗹𝗶𝗴𝗮𝘁𝗼𝗿 𝗖𝗿𝗮𝗰𝗸𝗶𝗻𝗴): These interconnected cracks resemble alligator scales, often due to repeated traffic loads, leading to structural failure. 🐊 𝗟𝗼𝗻𝗴𝗶𝘁𝘂𝗱𝗶𝗻𝗮𝗹 𝗖𝗿𝗮𝗰𝗸𝗶𝗻𝗴: Running parallel to the pavement's centerline, caused by poor joint construction or excessive traffic loads. 🛣️ 𝗧𝗿𝗮𝗻𝘀𝘃𝗲𝗿𝘀𝗲 𝗖𝗿𝗮𝗰𝗸𝗶𝗻𝗴: Perpendicular to the centerline, attributed to low-temperature shrinkage or aging of the asphalt. 🚗 𝗘𝗱𝗴𝗲 𝗖𝗿𝗮𝗰𝗸𝗶𝗻𝗴: Found at the pavement edge, usually due to weak shoulder construction or water infiltration. 💧 𝗕𝗹𝗼𝗰𝗸 𝗖𝗿𝗮𝗰𝗸𝗶𝗻𝗴: Resembling large rectangular blocks, caused by asphalt shrinkage due to temperature fluctuations and aging. 🧱 Understanding these types is crucial for effective maintenance. At Okur Makina, we specialize in offering targeted solutions for diverse asphalt challenges. Our expertise ensures lasting, safe roads. Contact Okur Makina for asphalt solutions tailored to your project's needs. 🌐 https://lnkd.in/dpaEjE7f 📞 +90 (312) 844 02 12 ✉️ [email protected] #AsphaltCracking #RoadConstruction #Infrastructure #PavementMaintenance #OkurMakina #EngineeringSolutions

Why is compaction so important for the performance of asphalt pavement? The presence of air voids in bituminous materials plays a significant role in the quality of laid and compacted bitumen. If the air void content is excessively high, it permits the entry of air and water. Furthermore, it accelerates the hardening process of binders, leading to premature weakening of pavements. Additionally, a high air void content can cause differential compaction under the weight of traffic, resulting in the formation of ruts and grooves along the wheel path. Nonetheless, it is essential to maintain a minimum level of air voids to ensure stability during the compaction process and to allow space for bitumen flow during long-term consolidation under traffic loads. It is recommended that designs include enough air voids to accommodate the expansion of the binder during summer and compaction that is caused by road traffic (NAASRA). Failure to do so may result in bleeding, loss of stability, and increased susceptibility to deformation under heavy loads. #Asphaltpavement #binderpavement

An asphalt leveling course serves as a preparatory layer on the existing pavement, filling in any low spots and ensuring a smooth, even surface for the final overlay. This helps solve drainage issues and enhances the pavement's lifespan. Reflective cracking, a common issue in existing pavements, can be significantly reduced with this method. A great article by Jason Brazer, P.E., thoroughly explains the benefits of an asphalt leveling course. It elaborates on how this technique can upgrade a simple asphalt overlay and make it exceptional. Read the full article to understand its long-term benefits and utilization in detail: https://lnkd.in/gxBZvgCm #asphalt #assetmanagement