Loose Paving Factors for Asphalt Mixtures Mix Type Mechanical Paving Artificial Paving Asphalt Concrete Mixture 1.15–1.35 1.25–1.45 Asphalt Gravel Mix 1.15–1.30 1.20–1.40 Working Temperatures for Hot Mix Asphalt Asphalt Type Oil Types Asphalt Marking AH-50 AH-70 AH-90 A-60 AH-110 AH-130 A-100 A-140 A-180 A-200 Asphalt Heating Temperature (°C) 150–170 140–160 130–150 Mineral Material Temperature Gap Type Mixing Machine 10–20°C higher than asphalt heating temperature (filler does not heat) Continuous Mixer 5–10°C higher than asphalt heating temperature (filler heating) Asphalt Mix Factory Normal Temperature (°C) 140–160 125–160 120–150 Mixer Storage Temperature (°C) Temperature during storage should not drop by more than 10°C Transport to Site Temperature (°C) 130–150, Winter ≥150 Paving Temperature (°C) Normal Construction Low Temperature Construction Not less than 110–130 and no more than 165 Not less than 120–140 and no more than 175 Rolling Temperature (°C) Normal Construction Low Temperature Construction 110–140 and no less than 110 120–150 and no less than 110 Rolling End Temperature (°C) Steel Roller Tire Roller Vibratory Roller Not less than 70 Not less than 80 Not less than 65 Gas Log,Vent Free Gas Fireplace,Gas Log Inserts,Gas Log Sets Yixing Able Ceramic Fibre Products Co., Ltd , https://www.ablegaslogs.com
Mastering the Temperature of Asphalt Concrete During Construction
Asphalt concrete used in road construction undergoes thermal processing, including heating of aggregates and asphalt, before being mixed. This means that transportation, paving, and compaction all require careful temperature control. If temperatures are too high or too low, it can compromise the final quality of the pavement and even lead to rework, increasing both time and cost.
In addition to material requirements, ambient temperature must also be considered when working with hot mix asphalt. Different types of asphalt have varying temperature specifications. Below is a table outlining the recommended operating temperatures for various asphalt types and processes.
**Note:**
1. Construction temperature depends on the type and grade of asphalt. Thicker asphalt should be kept closer to the upper limit, while lighter asphalt can be closer to the lower limit.
2. If the factory temperature exceeds the normal range by 30°C, the mixture should be discarded.
By following these guidelines and understanding the key parameters involved in asphalt paving, contractors can ensure a durable, high-quality road surface that meets industry standards.
How to Master the Virtual Thickness of Asphalt Concrete Paving
When paving asphalt concrete, one of the most critical factors is controlling the thickness of the material, also known as the "loose paving factor." If this factor isn't properly managed, the compacted layer may end up too thin, which can lead to poor quality, increased costs, and project delays. The loose paving factor varies depending on the type of asphalt mixture, the construction equipment used, and the specific construction method. It's typically determined based on practical experience or by referring to standard values. Below is a table showing typical loose paving factors for different mix types.