کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6722170 503583 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental investigation on annual changes in mechanical properties of structural concretes with various types of lightweight aggregates
ترجمه فارسی عنوان
بررسی تجربی بر تغییرات سالانه خواص مکانیکی بتن های سازه ای با انواع مختلف سنگ های سبک وزن
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
This study presents the compiled experimental data of compressive strength and the modulus of elasticity for five different lightweight concretes cured up to 365 days and compares them with those for a normalweight concrete. Mechanical properties sharply increased during early stage approaching asymptotic values, depending on design strength codes. Various empirical relationships approximately represent the experimental data, with the different types of concrete exhibiting discrepancies within acceptable bounds. Results highlight that the time-dependent mechanical properties of concretes containing lightweight aggregates can be reasonably estimated using conventional empirical models, provided that values at 28 days of curing are accurately known. Relationship between measured strength and modulus provides the first approximations, corroborated by coinciding values from nondestructive testing. The evolution of density and the effect of curing conditions are also discussed. These experimental results demonstrate that the type of lightweight aggregate strongly influences the mechanical properties of concretes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 73, 30 December 2014, Pages 442-451
نویسندگان
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