کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7884468 | 1509712 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Role of alcohol-ethylene oxide polymers on the reduction of shrinkage of cement paste
ترجمه فارسی عنوان
نقش الکل اتیلن اکسید پلیمر بر کاهش انقباض رب سیمان
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
چکیده انگلیسی
Concrete drying shrinkage is a major practical problem, but it can be ameliorated by means of “shrinkage-reducing agents” (SRAs). Water vapor sorption isotherms and low temperature DSC measurements suggest that alcohol-ethylene oxide polymers (AEOPs) with a better hydrophilic-lipophilic (HL-) balance are present in meso-pores in which water molecules evaporate from 75% RH to 40% RH. Short-term drying shrinkage measurements show that the better HL-balanced AEOPs reduce irreversible shrinkage, which occurs mainly from 75% RH to 40% RH during the first drying. Based on the similarity between corresponding RH regions, it is concluded that the better HL balanced AEOP in relevant meso-pores hinders agglomeration of C-S-H during the first desorption to mitigate the irreversible shrinkage and reduce the first drying shrinkage.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 111, September 2018, Pages 157-168
Journal: Cement and Concrete Research - Volume 111, September 2018, Pages 157-168
نویسندگان
Ippei Maruyama, Ellis Gartner, Katsutoshi Beppu, Ryo Kurihara,