PROSES PEMBUATAN JALAN MENGGUNAKAN LAPISAN PERKERASAN LENTUR (ASPAL) Kelompok 2 5PJJC

Summary

This video details the comprehensive process of road construction, emphasizing ten critical stages from surveying to finishing. It covers techniques for land clearing, earthwork, subgrade preparation, and the layering of aggregates to ensure structural integrity. The use of various machinery like excavators and rollers is highlighted, along with the importance of quality control in material testing. The final stages include applying asphalt and road markings, showcasing the meticulous work required for durable road surfaces. The video aims to inform viewers about the complexities involved in creating safe and reliable road infrastructure.

Takeaways

• 😀 The road construction process includes 10 distinct stages.
• 😀 The first step is mapping or measuring the road to ensure proper dimensions.
• 😀 Clearing the road area of debris and vegetation is crucial before construction.
• 😀 Excavation and embankment shape the road's elevation according to design plans.
• 😀 Subgrade preparation involves compacting the soil to provide a stable foundation.
• 😀 The foundation layer distributes vehicle loads to prevent excessive deformation.
• 😀 Proper aggregate mix and grading are essential for the road's structural integrity.
• 😀 Quality control measures must be in place throughout all stages of construction.
• 😀 Final surface layers are applied with specific techniques to ensure durability.
• 😀 Finishing touches include road marking and additional compacting for a smooth finish.

Q & A

What is the purpose of the mapping or surveying stage in road construction?

The mapping or surveying stage ensures that the road aligns with the desired dimensions and elevation, typically using tools like theodolites or total stations.

Why is the clearing and grubbing phase important?

This phase removes trees, debris, and other obstacles to prevent future issues like potholes or road damage, ensuring a clean site for construction.

What is the role of excavation in road construction?

Excavation, or stripping, shapes the road's elevation by cutting into the earth to achieve the planned profile, often using excavators for soil removal.

How is the subgrade prepared before laying the pavement?

The subgrade is compacted to ensure it is stable and free of debris, which can be done using bulldozers and vibratory rollers.

What are the functions of the foundation layers in road construction?

Foundation layers distribute vehicle loads to prevent excessive deformation and maintain the road's structural integrity.

What is the significance of the hotmix binder course?

The hotmix binder course serves as an adhesive layer between the aggregate base and the asphalt surface, enhancing durability and preventing water damage.

What equipment is typically used for laying the surface course?

The surface course is laid using a finisher machine, followed by compaction with tandem rollers to ensure a smooth and durable surface.

What activities are included in the finishing stage of road construction?

The finishing stage includes compaction, leveling the road, and applying road markings for guidance, ensuring the road is ready for use.

How is quality control maintained during road construction?

Quality control involves regular testing of materials and processes, including ensuring that compaction meets specified standards through routine checks.

What precautions are taken for managing excess water in the foundation layers?

Excess water in the foundation must be managed by adding dry material or allowing it to dry out before proceeding with further construction to ensure proper compaction.