What is MC 70 asphalt?

Cutback Bitumen MC-70 is medium curing (MC) cut-back asphalt consisting of penetration grade asphalt cement and diluent or cutter of medium volatility. The diluent temporarily reduces the viscosity of the asphalt cement for ease of handling and application.

What does MC-70 mean?

MC-70 is a liquid petroleum product produced by fluxing penetration grade bitumen with suitable petroleum diluents. It is a medium curing cutback asphalt consisting of penetration grade asphalt cement and diluent or cutter of medium volatility.

What is MC in asphalt?

Medium-curing (MC) cutback asphalt cement is a combination of medium diluents of intermediate volatility, typically in the kerosene boiling point range, and asphalt cement. Medium-curing cutback grades include MC-30, MC-70, MC-250, MC-800, and MC-3000.

What is the difference between MC-30 and mc70?

As mentioned above, the main difference between MC-30 and MC-70 bitumen is their kinematic viscosity. For MC-30 the kinematic viscosity is 30 to 60 centistoke, but for MC-70 bitumen it is 70 to 140 centistoke.

What temperature should I apply MC-70?

Apply MC-70 bituminous prime coat at temperatures from 120 °F to 180 °F [49 °C to 82 °C].

MC 70 medium curing cutback bitumen

What is the best temp for asphalt repair?

During initial application, the asphalt should still be at least 220 to 290-degrees Fahrenheit. If the asphalt dips below approximately 185-degrees Fahrenheit before compaction is complete, its consistency stiffens up too much to finish the job properly.

What is the best temp for asphalt?

The best temperature for paving asphalt is about 70 degrees Fahrenheit. For most people, that would make the late spring or early summer the best time of year for a new driveway, but that will vary depending on where you live.

What is MC 30 used for?

MC 30™ is a blend of medium curing petroleum solvents and penetration grade bitumen. MC 30™ is used for priming newly constructed, crushed stone- or natural gravel base courses prior to surfacing.

What are the different viscosity grades of asphalt?

The AC grading is based on absolute viscosity at 60 °C in units of 100 poises. Six asphalt cement viscosity grades were established as AC-2.5 (softest), AC-5, AC-10, AC-20, AC- 30, AC-40 (hardest). AC-2.5 means asphalt cement with a target viscosity of 250 poises at 60˚C (250 has been abbreviated to 2.5).

What is AC 30 asphalt?

AC-30 is unmodified asphalt product, approximately 3000P viscosity used for hot mix asphalt, emulsion production or further modification for higher temperature paving grades. AC-5 Cement. Specialty Product, Binder.

What is the thinnest cutback asphalt?

The most viscous (stiffest) grades of the three cutbacks (RC-3000, MC-3000, and SC-3000) are only slightly thinner than the lowest grade of asphalt cement (AC-2.5). The least viscous (thinnest) grades (RC-70, MC-70, and SC-70) have the consistency of dairy cream at a room temperature of 77° F (25° C).

What grade is asphalt road?

This value is called the penetration number and may range for paving grades from 60 to 300. The larger the pene tration number the softer the asphalt. The Asphalt Institute specifies four penetration grades: 60-70, 85-100, 120-150, and 200-300.

What does ABC stand for in asphalt?

"Base course" refers to the sub-base layer of an asphalt roadway. Generally consisting of larger grade aggregate, spread and compacted to provide a stable base for further layers of aggregates or asphalt pavement. Aggregate base course is often referred to as ABC.

What is MC vs RC asphalt?

A Rapid-Curing (RC) Cutback Asphalt is designed to react quickly primarily for spray applications, such as bond/tack coats, aggregate chips seals, sand seals and similar surface treatments. A Medium-Curing (MC) Cutback Asphalt is designed for mixing with aggregates.

What is the application rate for MC 30 prime coat?

Generally, primers are applied at rates between 0.5 and 1.4 L/m2. Cutback bitumens suitable for priming are also used for tack coats, which are applied to an underlying surface to help with the adhesion of subsequent asphalt layer. A typical application rate is between 0.2 and 0.4 L/m2.

What is bitumen 60 70?

Bitumen 60/70 is a standard Penetration Grade of Bitumen ASTM D946M, typically used as a Paving Grade Bitumen suitable for road construction and for the production of asphalt pavements with superior properties particularly in road and airport constructions and other similar applications.

What type of asphalt is best for roads?

Of all the asphalt types available, hot mix asphalt is the most commonly used on roads, pavements. It is a flexible mix of fine and coarse aggregate and asphalt binder, which produces a highly weather-resistant pavement. Hot Mix Asphalt is heated and poured at temperatures of about 300 to 350 degrees Fahrenheit.

What are typical asphalt thicknesses?

Residential driveways typically use 2 to 3 inches of asphalt with 3 being suitable for occasional large trucks or heavy equipment. Underneath the asphalt you should have 6 to 8 inches of granular base aggregate.

What is high viscosity asphalt?

High viscosity modified asphalt is commonly used in ultra-thin asphalt pavement and open-graded friction courses (OGFC) and is characterized by extremely high viscosity and excellent cementitiousness.

What is the viscosity of MC 70?

Since the kinematic viscosity of MC-70 ranges from 70 to 140, it will properly coat and bond loosely bonded and fine grained soils such as well graded sand. It is, thus, not suitable for densely graded base courses.

What does an 80 100 grade bitumen indicate?

Bitumen grade 80/100 Indicates that under the standard test conditions, penetration value of bitumen would vary from. No worries! We've got your back. Try BYJU'S free classes today!

What is MC in road construction?

Main Central Road - Wikipedia.

Can asphalt be too hot?

When there's extreme heat, say over 90° Fahrenheit (like summer), the asphalt can expand, and as the temperatures drop at night or when it rains, the asphalt contracts again. The expansion and contraction of the asphalt can cause cracks to appear, and in some cases, the road can even buckle up.

How hot is too hot for asphalt?

Ideally you want to install asphalt when both ground and air temperature are anywhere between 50 and 90 degrees. Anything below 50 or above 90 can cause a poor pour that will give you issues down the road.

How hot is asphalt when it is 100 degrees outside?

On a sunny day, asphalt can quickly heat up, even if the air temperature doesn't feel super hot to you. For example, if it's 85 degrees, then the blacktop temperature is 110. If the air temperature is over 100 degrees, then the blacktop can reach 160 degrees.