کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
261388 503700 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The characteristics of air void and frost resistance of RCC with fly ash and expansive agent
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
The characteristics of air void and frost resistance of RCC with fly ash and expansive agent
چکیده انگلیسی

In order to assure the outer concrete of Longtan dam in China possesses excellent of frost resistance, the losses of strength, mass and air void characteristics of roller compacted concrete (RCC) containing fly ash, superplasticizer and a novel MgO-bearing expansive agent (HNM) were studied using the freezing–thawing method ASTM C666. The results show that there is a linear correlation between strength and mass losses in RCC subjected to cycles of freezing and thawing.There is a relationship between the air void spacing factor and the frost resistance of RCC. However, for RCC containing fly ash and superplasticizer a spacing factor of 0.25 mm is not necessary. Using a water:binder ratio of 0.48 in RCC containing 50% fly ash and 8% HNM a durability factor of over D300 can be achieved provided the spacing factor is less than 0.4 mm.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 20, Issue 8, October 2006, Pages 586–590
نویسندگان
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