pg bitumen 70-10

Description of PG Bitumen 70-10

PG Bitumen 70-10 is tailored for regions characterized by mild climates and minimal temperature fluctuations. With its exceptional flexibility and crack resistance, this grade ensures the longevity of pavement surfaces even in areas with relatively low thermal stress. Its ability to maintain structural integrity under varying weather conditions makes it a reliable choice for road construction projects in temperate climates. Whether facing moderate traffic loads or occasional temperature changes, PG-70-10 bitumen offers durable pavement solutions, reducing the need for frequent maintenance and repairs.

PG Bitumen 70-10 Application

PG Bitumen 70-10 is one of the high-performance bitumen binders in the construction and maintenance of roads, particularly in areas of very fluctuating climatic conditions. Thus, the “70-10” indicates that the performance covers a broad range of temperatures: it could be resistant to high temperatures up to 70°C without showing softening, yet serviceable at low temperatures as low as -10°C without cracking. It is, therefore, ideal for application in the construction of highways, runways, and urban roads of those regions where summers are usually hot and winters mild. It provides higher resistance to deformation under heavy traffic loads, increasing the life and quality of paved surfaces.

Besides road construction, PG 70-10 finds its application in specialized operations like waterproofing and roofing, owing to the characteristics that it has in regard to adhesiveness and weather resistance. It resists aging, too, and retains its consistent quality for long periods, hence limiting occurrences of repair needs. Its versatility as a material means that the asphalt mixes are modified to bind into specified engineering requirements, such as polymer-modified asphalt.

Applications on the Cutting Edge and Innovative

PG Bitumen 70-10 is utilized in advanced road construction technology to enhance pavement life and performance. It is usually blended with polymer-modified asphalt mixtures to enhance elasticity and durability against the elements. The grade is also under research for utilization in energy-conserving warm-mix asphalt, which lowers production temperatures and emissions. PG 70-10 is also applied in smart road technology, where sensor-embedded pavements are utilized to optimize maintenance strategies. These applications demonstrate its versatility in modern infrastructure development.

PG 70-10 vs PG 76-22

The most noticeable difference between PG Bitumen 70-10 and PG Bitumen 76-22 is the range of temperature performance and suitability for different climates. PG 70-10 is designed for moderate climates, withstanding temperatures up to 70°C from rutting and remaining flexible down to -10°C to prevent cracking. On the other hand, PG 76-22 is formulated for more extreme conditions, with higher resistance to deformation at 76°C and higher flexibility at temperatures as low as -22°C, making it suitable for hot climates with bitter winters. This makes PG 76-22 more durable and more suitable for high-traffic roads and highways in areas with extreme temperature fluctuations.

Global Standards and International Comparison

PG Bitumen 70-10 meets international standards such as ASTM and AASHTO, providing uniformity in varied climatic conditions. The grade is intended for moderate or warm climates where the balance of high-temperature stability and low-temperature flexibility is required. PG 70-10 is better compared to other performance grades in regions of mild winters and moderate summer conditions, offering sufficient resistance to rutting and sufficient durability against thermal cracking. It is widely used in areas with constant traffic volumes and seasonal temperature variations and offers long-lasting pavement performance.

Packing

PG 70-10 is normally presented in various packages as required by the demands of the Construction Industry. Some of them include bulk supply: large-scale projects, it is dispatched at the required site in heated tanker trucks, drum packaging: wherein the bitumen is packed into the steel drums for easy storing and movements.

In addition, bitumen is also packed in polybags or jumbo bags with an inner lining to prevent leakage and for safe handling. The choice of packaging depends on the project scale, logistics, and storage requirements; all are designed to maintain the material’s quality and usability during transit and storage.

Specification

SpecificationUnitValueMethod
Average 7-Day Maximum Pavement Design Temperature°C<76
Minimum Pavement Design Temperature°C> -16
Flash Point Temperature°CMin230AASHTO T48
Viscosity, T 316, Maximum 3 Pas, Test Temp, °C°C135AASHTO T316
Dynamic Shear, T 315, G*/sin Minimum 1.00 KPa Test Temperature, @10 rad/s,°C°C76AASHTO T315
Rolling Thin Film Oven Test (T 240)
Mass Change, Maximum, Percent%1.00AASHTO T240
Dynamic Shear G*/sin Minimum 2.2 KPa Test Temperature, @10 rad/s°C76AASHTO T315
Pressure Aging Vessel (PAV) Test (AASHTO R28)
PAV Aging Temperature°C100AASHTO R28
Dynamic Shear G*/sin Maximum 5000 KPa Test Temperature, @10 rad/s°C34AASHTO T315
Creep Stuffiness S Maximum 300 Mpa M-Value Minimum 0.300 Test Temp,@60s°C-6AASHTO T313
Direct Tension, T 314, Failure Strain, Minimum 0.300 Test Temperature, @60s, °C°C-6AASHTO T314
Critical Low Cracking Temp, PP42, Critical Cracking Temp Determined by PP 42,Test Temp, °C-6AASHTO PP42

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