Traditionally, inspectors have defined concrete cracks as “hairline”, “fine”, “medium”, and “wide” based on the width of the crack. The Authority is moving toward classifying cracks based on …

Dec 10, 2023 · In this work, a new semi-automatic workflow for a concrete bridge condition assessment system is developed and discussed. The workflow consists of three main parts …

6 days ago · However, the widths of cracks are very thin in the order of submillimeters, which requires high-resolution (HR) images for inspection. However, the low resolution of crack …

6 days ago · A rapid concrete crack detection method based on improved YOLOv8 Abstract ... Experimental results demonstrate that the proposed model achieves a detection precision of …

Large cracks in concrete are normally regarded as critical for durability because they allow water to enter, giving rise to frost damage. Even worse, salt solutions can penetrate and attack the …

Map Cracking. intersecting cracks that extend below the surface of hardened concrete that vary in width from fine and barely visible to open and well-defined (also called pattern cracking). (See …

5 days ago · The experimental results show that our algorithm achieves 81.07% mAP on the expanded dam crack dataset, which is 8.39% higher than the original Faster-RCNN algorithm. …

4a. MAP CRACKING Description. A series of cracks that extend only into the upper surface of the slab. Larger cracks frequently are oriented in the longitudinal direction of the pavement and …

Cracks in Concrete Due to Drying. Improper curing techniques and poor mix design, both of which cause premature drying, can cause cracks in concrete. The two main types of cracking caused …

Mar 14, 2025 · 3. Heaving Cracks . Heaving cracks occur when sections of concrete are pushed upward, creating uneven surfaces and significant fractures. This type of crack is common in …

Mar 1, 2024 · Learn about eleven common types of concrete cracks and what causes them. Virtually every old-school concrete guy will always tell you that there are only two guarantees …

Map cracking looks like a road map; it’s a series of thin, shallow cracks that run across the concrete’s surface. This can also be caused by curing, but because this crack is only on the …

A crazed concrete surface contains a network pattern of very shallow, fine/hairline cracks. They do not penetrate much below the surface of the concrete. They rarely are more than 1/8” deep …

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3 days ago · For the cast concrete slab (A60), cracks are primarily concentrated in the mid-span region, with the main crack being wider than others. In contrast, the S-3D printed rebar mesh …

Sep 2, 1999 · The solution is a strong concrete box girder for the piers with a vertical slot underneath the beam. This bisectioning of the box provides for the required flexibility. The 87 …

On 8 September 2008, the line was blocked by three demonstrators near Berg, who had chained themselves to a concrete block under the tracks, prior to the running of such a transport. Using …

For four days, elements of the 398th Infantry Regiment of the 100th Division then assaulted Fort Schiesseck, a major Maginot Line defensive work––a 14-story-deep fortress, complete with …