Surface curing effect on reflection response of hardened cementitious mortar samples
عرض / فتح
التاريخ
2021المؤلف
Hasar, Ugur CemIzginli, Mucahit
Ozturk, Hamdullah
Korkmaz, Huseyin
Cevik, Abdulkadir
Irshidat, Mohammad Refaat
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البيانات الوصفية
عرض كامل للتسجيلةالملخص
Surface curing effect of hardened engineering cementitious mortar (ECM) samples with distinct water-to-binder
ratios (𝑤∕𝑏) is analyzed by recording amplitude of reflection response |𝛤| or conductance term 𝑔 measured
by a microwave open-ended waveguide probe. Frequency dependencies (between 3.95–5.85 GHz) of |𝛤| and
𝑔 measured from various surfaces (top, bottom, and lateral) of ECM samples with 𝑤∕𝑏 = 0.2 and 0.3 are
presented at the 720th days of curing (hardened ECM). In addition, their temporal dependencies (over 1–9
and 720–815 days) are presented for the frequency value of 4.56 GHz. From our analysis, contrary to top and
lateral surface behaviors, it is noted that crossover between 𝑔 values measured from bottom surfaces of ECM
samples with 𝑤∕𝑏 = 0.2 and 0.3 delays for a long time (around 550 days). Propagation-related studies should
take into account reflection profiles varying with wall height for accurate prediction.
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