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Related Concept Videos

Wood Surfacing01:14

Wood Surfacing

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Wood surfacing is a critical finishing process designed to smoothen the wood surface, enhance its dimensional accuracy, and make handling safer. This process compensates for potential shrinkage during the seasoning phase by marginally increasing the wood dimensions before surfacing. It also helps correct some distortions that may occur as the wood dries.
The equipment used in the surfacing process is a plane equipped with rotating blades. This tool efficiently smoothens the wood surface and can...
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Abrasion Resistance of Concrete01:23

Abrasion Resistance of Concrete

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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...
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Finishing Concrete01:18

Finishing Concrete

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Concrete finishing starts immediately after the concrete has been placed and consolidated. The initial step, screeding, involves leveling the concrete surface by removing excess material to flush it with the formwork's top. Following this, bull float or darby are employed to smooth the surface further, effectively lower high spots, fill low areas, and ensure larger aggregate particles are embedded within the concrete. This preparation is critical before the appearance of bleed water, as its...
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Accelerated Curing of Concrete01:25

Accelerated Curing of Concrete

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Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...
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Curing of Concrete01:20

Curing of Concrete

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The hydration of cement takes place within the water-filled capillary pores. However, environmental elements can disrupt this process by evaporating water from the concrete surfaces. Sealed concrete with a water-cement ratio below 0.5 experiences self-desiccation, leading to water loss. The water loss in concrete is mitigated by curing. This technique involves keeping the concrete saturated to maintain the necessary temperature and moisture conditions, to optimally fill the spaces in the cement...
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Shape and Texture of Coarse Aggregate01:25

Shape and Texture of Coarse Aggregate

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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...
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Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight
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Achieving a non-destructive ultra-smooth surface using a CeO2 slurry modified with asphalt.

Wei Li, Dawei Luo, Qiang Xin

    Optics Express
    |February 20, 2026
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    A novel polishing liquid modifies asphalt interfaces for ultra-smooth optical surfaces. Dodecylbenzenesulfonic acid (DBSA) enhances abrasive dispersion and stability, reducing surface roughness to Ra 0.097 nm.

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    Area of Science:

    • Materials Science
    • Surface Engineering
    • Optical Engineering

    Background:

    • Increasing demand for non-destructive ultra-smooth optical components.
    • Challenges in achieving desired surface finish with conventional polishing methods.

    Purpose of the Study:

    • To develop a novel polishing liquid for ultra-smooth surface generation on optical components.
    • To investigate the role of asphalt interface modification in small tool polishing.

    Main Methods:

    • Utilized dodecylbenzenesulfonic acid (DBSA) to modify the asphalt interface.
    • Employed mineral oil (MO) and DBSA for emulsification and pad modification.
    • Investigated abrasive particle dispersion, liquid stability, and contact angle reduction.

    Main Results:

    • Achieved ultra-smooth quartz glass surface with roughness Ra 0.097 nm over a 20×20 µm² area.
    • DBSA promoted abrasive particle dispersion and polishing liquid stability.
    • Reduced abrasive particle accumulation and average load at the interface.

    Conclusions:

    • The proposed polishing liquid with asphalt interface modification offers a novel approach for ultra-smooth surface fabrication.
    • Mechanically induced chemical bond breaking is the primary material removal mechanism.
    • This method achieves high-quality optical surfaces without surface or subsurface damage.