• measurements of strain and humidity within massive concrete cylinders related to the formation of asr surface cracks

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 946
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     this study aims at proving the validity of a notion that the formation of non-expansive near-surface layer is responsible for surface cracking in asr-affected concretes by a laboratory experiment. relationship between the progress rate of the front of non-expansive layer toward inner portions and the formation of the first surface cracks was scrutinized by measuring relative humidity (r.h.) values and strains within a massive concrete cylinder (ϕ450 mm × 900 mm) with reactive aggregates under a dry environment. it was presumed from the measurements that a non-expansive layer of about 40 mm had been formed at the first cracking. thereafter, the environmental humidity was raised to > 95% r.h. pursuit of the growth of surface cracks and subsequent measurements of strains and r.h. values within the concrete cylinder under the moist environment suggested that the re-saturation continuously gave rise to the generation of tensile stresses in near-surface regions leading to active extension of surface cracks.

سوال خود را در مورد این مقاله مطرح نمایید :

با انتخاب دکمه ثبت پرسش، موافقت خود را با قوانین انتشار محتوا در وبسایت تی پی بین اعلام می کنم
مقالات جدیدترین رویدادها
مقالات جدیدترین ژورنال ها