کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
258554 503620 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Durability and cementing efficiency of fly ash in concretes
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Durability and cementing efficiency of fly ash in concretes
چکیده انگلیسی

This paper presents a study of the cementing efficiency (kd) of fly ash with regards to durability. The investigated variables were the class and amount of incorporation of fly ash, the cement type, the water/cement ratio, and the curing age of the mix. Experimental tests that simulate the penetration of chloride ion in concrete (multiregime method) have been conducted to determine the chloride diffusion coefficient in a non-steady-state. The cementing efficiency has been determined by means of a curve that shows the behavior of the diffusion coefficient of chloride in relation to the water/cement ratio. The results show that the cementing efficiency is strongly influenced by the water/cement ratio. Concerning durability, greater efficiency values than those observed in relation to the compressive strength have been found.


► Development of a simple methodology to obtain the cementing efficiency of fly ash.
► Use of chloride migration test to determine the durability of concretes.
► Optimization of fly ashes usage in concrete in terms of durability.
► High durability cementing efficiency values were obtained.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 30, May 2012, Pages 537–546
نویسندگان
, , ,