使用不同测量技术对露面聚合混凝土 (EAC) 路面结构进行比较研究
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
概括
评估聚合混凝土 (EAC) 表面质地显示了微质地 (BPT,DFT) 和宏质地 (CTM,SPL) 的测量差异. DFT显示轨道灵敏度低于BPT,而MPD/MTD显示高相关性,尽管测量方法不同.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 运输工程 运输工程
背景情况:
- 表面质地对于路面性能和安全至关重要.
- 评估暴露聚合混凝土 (EAC) 的纹理存在独特的挑战.
- 对于可靠的纹理评估,需要标准化的方法.
研究的目的:
- 研究和比较各种评估EAC表面质感的方法.
- 分析微质量和宏质量测量差异.
- 评估不同纹理测量技术之间的相关性.
主要方法:
- 使用英国摆形测试仪 (BPT) 和动态摩擦测试仪 (DFT) 评估的微纹理.
- 用圆形纹理仪 (CTM),静止激光谱仪 (SPL) 和体积法评估的宏观纹理.
- 在高速公路测试段进行的测量,包括左/右轮轨道.
主要成果:
- 与BPT相比,DFT对轨道之间的微纹理变化不那么敏感.
- MPD和MTD值在轨道之间没有显著差异.
- 在BPN和DFT20 (r=0.719),MPD和MTD (r>0.900) 之间观察到高线性相关性.
- 从CTM和SPL对MPD的差异是可以接受的,归因于配置文件扫描参数.
- 平均纹理深度 (MTD/ETD) 的模型在EAC和青表面之间存在显著差异.
结论:
- 虽然BPT和DFT显示微纹理灵敏度的变化,但MPD和MTD的相关性很好.
- 激光造型仪 (CTM,SPL) 为EAC提供了可比的宏纹理数据.
- 现有的MTD/ETD模型需要适应EAC路面.
相关概念视频
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