How to Create a Paving Texture

There are many options available when creating a paving texture. There are standard options like the Profilograph and CTM, but also the Megatexture or RoboTex. Which one is best for you?

Macrotexture vs Megatexture

Two of the most important types of road surface texture are megatexture and macrotexture. They are closely related to various characteristics of the road.

Microtexture is the smallest scale of aggregate surface texture. It is dependent on the aggregate’s particle composition, mineralogy, and processing technology.

Megatexture is the largest scale of aggregate surface texture. This can be measured by laser scanning equipment or inertial profilometers. A megatexture is a collection of features of macro-texture, such as minor joints and major joints.

Although microtexture is very difficult to measure, it can be indirectly evaluated. The Pendulum Friction Coefficient Method is an example. Look out for small paving jobs adelaide.

The three-dimensional surface model of pavement macrotexture can be reconstructed by laser scanning equipment. This can be used to calculate the macrotexture’s three-dimensional surface area.

This model can be used to calculate the macrotexture of asphalt pavements at different depths. This model can be used to calculate the microtexture and the macroscopic properties.


Profilographs are used to measure the road’s texture. They record the surface’s cross slope and longitudinal gradient, determining the amount of roughness in a road segment. The trace produced by a profilograph is then used to compute smoothness indices. PI, the International Roughness Index, and ride number are three types of smoothness indices.

IRI values range from 0 to several hundred inches per mile. These indices can be used to monitor the performance and condition of a pavement from the cradle until the grave. Several SHAs have begun to use IRI to judge the smoothness of new PCC pavements.

Traditionally, the pavement smoothness specification was based on the percentage of bid items. Some SHAs also specified pay incentives for smoothness. However, the specification is continually refined and updated.

Profiler software is available to help contractors diagnose roughness and determine areas that need repair. A profiler is a great tool to increase safety, reduce lane closure times and improve the quality of a paved surface.


CTM (Colorful Technology) has been in the asphalt business since 2006. It has recently rolled out the latest incarnation of its flagship product – the CMX paving texture – a paved pavement technology that promises to deliver high performing, and enduring paving solutions. The new product boasts a plethora of features including an improved surface texture, reduced cost of maintenance and improved fuel efficiency. CMX is just one of many innovative solutions being implemented across the country. To prove that it is on par with the rest of the pack, a study of its latest offering was conducted at the Florida Department of Transportation’s testing laboratory.

The multi-year, multi-agency study involved a team of engineers as well as a few test cars. In particular, the researchers examined the most notable performance characteristics of the MMX paving texture – namely its performance performance and fuel efficiency – as well as its cost of construction. During the course of the study, the company gathered some noteworthy data points in an effort to make the transition from asphalt to polymer concrete a smooth one. The team developed a multi-stage process to optimize the product’s performance using data from company test vehicles and laboratory facilities. Using a standardized test protocol, the CMX was inspected and reworked to improve its performance, and to reduce cost of construction.


RoboTex is a laser-based, robotic texture measuring tool that assesses pavement texture in three dimensions with sub-millimeter accuracy. RoboTex uses a line laser to map texture profiles and produce full 3-D images. It is a very versatile tool, able to profile any type of pavement and surface treatments. Transtec Group, a Texas-based pavement specialist is the one that developed and runs RoboTex. They have contributed to major research initiatives, such as the National Concrete Pavement Technology Center (NCPTC) and the Minnesota Department of Transportation’s MnROAD project.

The US Federal Highway Administration (FHWA) has also worked with the robot, including evaluating the effect of different textures on noise and gas mileage. The Colorado Department of Transportation also used the robot to create texture specifications. RoboTex has also been used by the US National Concrete Pavement Technology Center and the Danish Road Directorate.

RoboTex has measured the pavement texture in 26 US states and seven other countries. This information is used to analyze the performance characteristics, such as friction, smoothness and noise, of pavements.

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