Related Experiment Video
Updated: Jun 14, 2025
08:59
Determination of Aggregate Surface Morphology at the Interfacial Transition Zone ITZ
Published on: December 16, 2019
8.1K
A Comparative Study on the Texture of Exposed Aggregate Concrete (EAC) Pavements Using Different Measurement
Pawel Gierasimiuk1, Marta Wasilewska1, Wladyslaw Gardziejczyk1
1Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland.
Materials (Basel, Switzerland)
|August 29, 2024
Summary
Assessing aggregate concrete (EAC) surface texture reveals microtexture (BPT, DFT) and macrotexture (CTM, SPL) measurement differences. DFT showed less track sensitivity than BPT, while MPD/MTD showed high correlation despite differing measurement methods.
Area of Science:
- Civil Engineering
- Materials Science
- Transportation Engineering
Background:
- Surface texture is crucial for pavement performance and safety.
- Evaluating texture of exposed aggregate concrete (EAC) presents unique challenges.
- Standardized methods are needed for reliable texture assessment.
Purpose of the Study:
- To investigate and compare various methods for assessing EAC surface texture.
- To analyze microtexture and macrotexture measurement discrepancies.
- To evaluate the correlation between different texture measurement techniques.
Main Methods:
- Microtexture assessed using British Pendulum Tester (BPT) and Dynamic Friction Tester (DFT).
- Macrotexture evaluated with Circular Texture Meter (CTM), Stationary Laser Profilograph (SPL), and volumetric method.
- Measurements conducted on expressway test sections, including left/right wheel tracks.
Main Results:
- DFT was less sensitive to microtexture variations between tracks than BPT.
- MPD and MTD values showed no significant differences between tracks.
- High linear correlation observed between BPN and DFT20 (r=0.719), and MPD and MTD (r>0.900).
- Differences in MPD from CTM and SPL were acceptable, attributed to profile scanning parameters.
- Models for Mean Texture Depth (MTD/ETD) differed significantly between EAC and asphalt surfaces.
Conclusions:
- While BPT and DFT show variations in microtexture sensitivity, MPD and MTD correlate well.
- Laser profilometers (CTM, SPL) provide comparable macrotexture data for EAC.
- Existing MTD/ETD models require adaptation for EAC pavements.
Related Concept Videos
01:22Toughness and Hardness of Aggregate
250
Toughness and hardness are critical properties of aggregate materials used in concrete, particularly on pavement surfaces and industrial flooring subjected to heavy loads. Toughness is defined as the aggregate's resistance to failure by impact and is measured by the aggregate impact value (AIV). For this, the aggregate impact value test is performed, wherein the impact is delivered by a standard hammer, which falls freely under its own weight onto the aggregates. The aggregates fragment in...
250
01:23Abrasion Resistance of Concrete
114
Abrasion resistance is an essential characteristic of concrete that determines its durability and longevity under various wear conditions. Concrete surfaces are vulnerable to different types of abrasion. For instance, surfaces may wear down due to the constant movement of vehicles or be eroded by solids carried in water, as seen in concrete canal linings. Specific tests are conducted to measure the abrasion resistance of concrete.
One such test is the revolving disc test, where three plates...
One such test is the revolving disc test, where three plates...
114
01:25Shape and Texture of Coarse Aggregate
199
Aggregate shape is classified based on the relative sharpness or roundness of the edges and corners. This classification includes categories like rounded, angular, elongated, and flaky, each with specific characteristics. Rounded aggregates, fully shaped by attrition, are typical of river or seashore gravel, while angular aggregates, such as crushed rock, have well-defined edges. Aggregates that are elongated and flaky are less desirable, as they can reduce the workability and strength of...
199
01:23Measurement of Air Content in Concrete
123
Air content measurement in concrete is critical for ensuring structural integrity and durability of concrete structures, especially in environments prone to severe weather conditions. Accurate air content analysis optimizes concrete's resistance to freeze-thaw cycles and enhances its workability and strength. Several methods are standardized under ASTM guidelines to measure the air content in fresh concrete, each suitable for different concrete types and conditions.
The pressure method,...
The pressure method,...
123
01:20Porosity and Absorption of Aggregate
270
Aggregates contain pores of varying sizes; while some are completely enclosed within the particles, others open onto the surface, allowing water to penetrate. The porosity of aggregates is a major factor contributing to the overall porosity of concrete, given that aggregates constitute about three-quarters of concrete's volume.
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...
270
01:26Unsoundness of Aggregate due to Volume Change
98
Unsoundness in aggregates due to volume changes is primarily caused by the physical alterations aggregates undergo, such as freezing and thawing, thermal changes, and wetting and drying. Unsound aggregates, when subjected to these changes, result in volume change upon disintegration. This, in turn, contributes to the deterioration of concrete, including scaling, pop-outs, and cracking. Particular types of aggregates, such as porous flints, cherts, and those containing clay minerals, are...
98