کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10128335 | 1645133 | 2018 | 38 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The durability of SHCC with alkali treated curaua fiber exposed to natural weathering
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
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چکیده انگلیسی
This work presents the durability studies carried on strain-hardening cement-based composites reinforced with 4% of 40â¯mm alkali treated natural curaua fiber. The collected results present the influence of natural weathering periods of 6 and 12 months on the composite tensile properties. The strain-softening behavior of the composites exposed to weathering is motivated by the deterioration of fiber-matrix bond, observed by the reinforcement work indicators, pull-out tests and visual inspection of the interfacial transition zone. Matrix specimens exposed to natural weathering provided information on pH variation along the specimen's cross-section and the chemical analysis related the pH difference to the presence of amorphous carbonates, and free from calcium hydroxide as the matrix was designed. The deterioration of post-crack fiber reinforcement capacity, thus the absence of strain-hardening behavior, was caused by fiber-matrix void observed under microscope, which deteriorated the fiber-matrix connection.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Composites - Volume 94, November 2018, Pages 116-125
Journal: Cement and Concrete Composites - Volume 94, November 2018, Pages 116-125
نویسندگان
Bartosz Zukowski, Edson Rodrigo Fernandes dos Santos, Yasmim Gabriela dos Santos Mendonça, Flávio de Andrade Silva, Romildo Dias Toledo Filho,