کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
257363 503585 2014 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanical properties and constitutive equations of concrete containing a low volume of tire rubber particles
ترجمه فارسی عنوان
خواص مکانیکی و معادلات ساختاری بتن حاوی حجم کم ذرات لاستیک تایر است
کلمات کلیدی
بتن حاوی مقادیر کم لاستیک تایر، فشرده سازی یک جانبه، محتوای لاستیک اندازه ذرات لاستیکی، ویژگی های مکانیکی، مدل سازمانی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی


• Rubber concrete with 5 different rubber contents and particle sizes was tested.
• The influence of rubber on mechanical properties of concrete was investigated.
• The improved constitutive model for low rubber content concrete was presented.
• The constitutive model gives the influence of rubber and concrete strength.

Uniaxial compressive tests were conducted for a low-volume tire rubber concrete (RC) with different rubber volume content levels and particle sizes (five of each). The influence of rubber content and particle size on the mechanical properties of RC was investigated, including axial compressive strength, elastic modulus, peak strain, ultimate strain, appearance of visible cracks and failure pattern of specimens. The mechanical analysis of test results was conducted based on uniaxial compressive stress–strain curves. Uniaxial compressive constitutive models of low-volume rubber concrete were established that included axial compressive strength, peak strain and constitutive parameters a and b. There was obvious regularity between constitutive parameters a and b, rubber content and rubber particle size. Moreover, the physical meanings of constitutive parameters a and b were given, and the established constitutive models were evaluated by tests. The test results demonstrate that the constitutive models have not only good predicting ability and high accuracy but also nice applicability within the limit of 50 kg/m3 rubber content. The constitutive models were then improved by introducing the sand rate reduction factor k to reflect the influence of rubber additives. The improved constitutive models are able to predict the performance of concrete with low amounts of rubber.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 70, 15 November 2014, Pages 291–308
نویسندگان
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