کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
256618 503557 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Use of Surface Free Energy method to evaluate the moisture susceptibility of sulfur extended asphalts modified with antistripping agents
ترجمه فارسی عنوان
استفاده از روش انرژی آزاد سطحی برای ارزیابی حساسیت رطوبت آسفالت های تقویت شده گوگرد اصلاح شده با عوامل ضد انقباض
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی


• Replacing of bitumen with sulfur (Googas) increased moisture susceptibility of asphalt mixtures.
• Addition of antistripping agent (NZ) improved the resistance of SEA against moisture damages.
• SFE test results were compatible with the classic mechanical test results.
• Limestone aggregate led more resistant mixtures against moist condition compared to the granite aggregate.

Aggregate–asphalt binder adhesion bond is a vital factor that affects the resistance of asphalt mixtures against moisture damages. Since, moisture damages are the main defects of sulfur extended asphalts (SEAs), this study aims to improve it by reinforcing the adhesion between asphalt binder and aggregate. An antistripping additive named nanotechnology Zycotherm (NZ) was used to achieve this goal. Surface Free Energy (SFE) method was applied to examine the effectiveness of NZ additive in improving the moisture susceptibility of SEA. The research team utilized two common mechanical tests (indirect tensile strength, and dynamic modulus) to evaluate the validation of SFE method. All samples were constructed with two different aggregates, limestone and granite. In the SFE method, the measured surface energy components of constitutive materials were used to calculate the bond strength between them in dry and wet conditions. The findings showed that adding NZ was a successful technique to compensate the deteriorated adhesion due to using sulfur. Also it was demonstrated that SFE test results were so compatible with the common mechanical tests in predicting moisture damages.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 98, 15 November 2015, Pages 456–464
نویسندگان
, , ,