کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4913514 1428767 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Matrix design for waterproof Engineered Cementitious Composites (ECCs)
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Matrix design for waterproof Engineered Cementitious Composites (ECCs)
چکیده انگلیسی
The excellent crack control capability of Engineered Cementitious Composites (ECCs) is exceedingly beneficial for waterproofing applications. To design a suitable ECC matrix for waterproofing applications, waterproofing admixture (WPA) was added to improve the wetting property and reduce the sorptivity, and shrinkage-reducing admixture (SRA) together with calcium sulfoaluminate cement (SAC) were introduced to control the drying shrinkage. A comprehensive experimental program was conducted to optimize the use of WPA, SRA and SAC. Moreover, the water permeability of both un-cracked and cracked ECCs were examined. This work finally developed a kind of waterproof ECC, with 28-day compressive strength around 35 MPa, ultimate tensile strain over 4%, a water contact angle larger than 110 degree, 28-day drying shrinkage about 2/3 the value of the typical ECC (M45), a water absorption rate around 5 × 10−5 mm/s1/2 and a water permeability coefficient about 8 × 10−12 m/s. The findings of this research should be rewarding for the design of ECCs for waterproofing applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 139, 15 May 2017, Pages 438-446
نویسندگان
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