William Hime

William Hime's Posts

  • Erlin and Hime on Concrete

    More than 100 inground outdoor swimming pools and integral spas—constructed using reinforced shotcrete shells faced with nominal 12.5-mm-thick (½-in.-thick) intimately bonded white mortar veneer—had cracked after a few years of use.

  • Hime & Erlin On Concrete

    The high pH of uncarbonated concrete (minimum 12.5) keeps steel from corroding when chloride contents are less than about 0.20% by portland cement mass.

  • Hime & Erlin On Concrete

    Some metals usually get along fine in portland cement mortar and concrete. Some do not, for some it depends. Iron and steel are among the first kind.

  • Hime & Erlin On Concrete

    When we discussed hydration last month, it dealt mostly with calcium hydroxide (Ca(OH) or CH), which seemed like a good way to introduce the subject—after all, calcium hydroxide constitutes about 20% to 25% of the portland cement paste.

  • Erlin & Hime on Construction

    We all have passions—portland cement's passion is water. With water, it becomes another material that possesses a myriad of physical and chemical properties.

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