کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
257980 503604 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Full-depth concrete pavement repair with steel reinforcements
ترجمه فارسی عنوان
تعمیر آسفالت بتونی کامل عمیق با تقویت فولاد
کلمات کلیدی
تعمیر عمیق کامل، پیاده رو بتن ریزی شده، تقویت فولاد، نوار جیب، راندمان انتقال بار
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی


• An innovative FDR technique with two layers of steel reinforcements and tie/dowel bars was established.
• The technique has been implemented with success to repair areas with recurring failures.
• DCP was utilized to determine the depth of concrete slab thickness.
• FWD was utilized to determine and monitor the changes of LTEs.

Some of the conventional Full-Depth Repairs (FDR) in Jointed Concrete Pavement (JCP) suffered recurring failures in less than one year. Under very heavy truck trafficking, tie bars were ruptured, and the slabs were settled for as much as 100 mm. This indicates the conventional method of slab replacement does not address the underlying problem. Falling Weight Deflectometer (FWD) and Dynamic Cone Penetrometer (DCP) were utilized to determine Load Transfer Efficiency (LTE) and base/subgrade support conditions, respectively. After one month of the heavy truck trafficking since opening to traffic, some transverse joints had LTE less than 10%. DCP results confirmed extremely weak base/subgrade support. It was concluded that the weak base/subgrade support was one of the main culprits for the recurring failures. For more effective repair of failures in JCP with heavy truck traffic, an innovative FDR technique with two layers of steel reinforcements and tie/dowel bars to adjacent JCPs was developed. The weak and poor base/subgrade layers were completely removed and replaced with concrete and steel reinforcements. Both longitudinal and transverse repair joints were designed considering the compatibility of concrete volume changes between the existing JCP slabs and repair slabs. Condition survey results indicated that the performance to date has been excellent with no visible distress under almost two years of the heavy truck traffic. For the repair of JCP sections with recurring failures, the implementation of the proposed technique with steel reinforcements and joint designs is expected to result in improved performance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 51, 31 January 2014, Pages 344–351
نویسندگان
, , , ,