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  1. อย่าห้าวให้มากไอ้เด็กเหี้ย
  2. Wow! This blog looks exactly like my old one! It's on a entirely different topic but it has pretty much the same page
    layout and design. Superb choice of colors!
  3. Essentially the most commonly used coatings for the duration of original construction of road system bridges
    were sole component oil-alkyds containing guide
    or lead/chromate pigmentation. These kind of coatings
    were generally utilized in multiple thin applications totaling 6 to TWELVE mils.

    After many many exposure to the setting, these alkyds have develop into brittle and inflexible, plus heavily
    chalked in parts exposed to sunlight. This aging and deterioration on the coating film has,
    typically, severely reduced both this cohesive and adhesive strength of the
    coating system. In overcoating servicing, the existing coating which in turn remains after cleaning plus minor surface preparation with the structure will serve because the
    chemical and mechanical foundation for adhesion of every new applied coatings.
    If the existing coating has lost many its cohesive and adhesive homes, an applied overcoating will be at the mercy on the disbonding of the
    first poor coating. In great part, the degree of
    risk linked to overcoating is directly regarding the remaining
    adhesion and cohesion of the original coating.
    Measurement of adhesion on the existing coating by methods ASTM D4541 or ASTM D3359
    (or by simply cutting to existing coating towards substrate and attempting to lift that has a knife blade), is a key step in determining the acceptability
    of the existing system for overcoating. Just before 20 to 25 typical, most highway bridges were being fabricated
    from steel users covered with intact millscale. Most painting was accomplished directly on the millscale.
    Millscale is some sort of relatively poor surface for coating adhesion and
    efficiency. Intact millscale can become protective to steel at any given time, but once
    breached, the millscale will often electrochemically accelerate the deterioration of adjacent bare steel.
    The presence of millscale can increase the risk associated with
    overcoating by way of limiting the adhesion on the overcoating paint and
    accelerating deterioration on the existing coating and the newest overcoat at the internet site of any holidays or breaches
    within the paint film.
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