کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4913307 | 1428760 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of formwork material on transport properties of self-consolidating concrete near formed surfaces
ترجمه فارسی عنوان
تأثیر مواد قالببندی بر خصوصیات حمل و نقل بتن خود متخلخل در نزدیکی سطوح شکل گرفته
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
بسته بندی انبوه، جذب مویرگی، پوشش بتنی، قالب سازی، رئوئولوژی، بتن خودمختاری، جذابیت، اثر دیوار،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
This study aims at determining the influence of the formwork material on transport properties of concrete cover when using self-consolidating concrete (SCC). Two types of formwork were used. The plywood (PW) formwork material which is relatively rough and absorbent compared to the PVC material that has a very smooth and non-absorbent surface. A total of 17Â SCC and highly flowable concrete mixtures with wide range of slump flow and T50 values were investigated. The concrete was used to fill 400Â ÃÂ 500Â ÃÂ 200Â mm3 moulds made with either PVC or PW. Sorptivity tests were performed on core samples (100Â mm in diameter and 50Â mm in length) taken from the sides and center of the prepared moulds after 28Â days of moist curing. This paper presents new experimental method using image analysis to quantify the relative surface area of coarse aggregate along different sections near formed surfaces. Sorptivity of concrete near the surface cast against the PW formwork was found to be significantly lower than that of PVC one due to the decrease of local w/c and wall effect. The examination of packing density of coarse aggregate near PVC and PW surfaces showed limited wall effect near the PVC formwork and significant wall effect within a thickness comparable to the maximum size of coarse aggregate near the PW formwork.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 146, 15 August 2017, Pages 329-337
Journal: Construction and Building Materials - Volume 146, 15 August 2017, Pages 329-337
نویسندگان
B.M. Aïssoun, J.-L. Gallias, K.H. Khayat,