کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5436791 1509651 2017 51 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of graphene sulfonate nanosheets on mechanical and thermal properties of sacrificial concrete during high temperature exposure
ترجمه فارسی عنوان
اثرات نانومواد گرافن سولفونات بر خواص مکانیکی و حرارتی بتن قربانی در هنگام قرار گرفتن در معرض دمای بالا
کلمات کلیدی
بتن مقدس، نانوذرات گرافن سولفونات، قطر بینی، استحکام فشاری، ضریب انبساط حرارتی، نفوذ پذیری حرارتی،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی
Using nanomaterials is a new method to improve concrete material, and graphene or its derivatives are currently the most attractive nanomaterials. This paper aims to experimentally evaluate the effects of graphene sulfonate nanosheets (GSNSs) on physical, mechanical, and thermal properties of sacrificial concrete. The microstructure, porosity, compressive strength, thermal analysis, coefficient of thermal expansion, thermal diffusivity and ablation behaviour of sacrificial concrete with different contents of GSNSs before and during exposure to various temperatures up to 1000 °C were comprehensively investigated. A new experimental apparatus was proposed and used to measure the compressive strength of sacrificial concrete during elevated temperature exposure. It was found that, (1) the compressive strength, thermal diffusivity, and decomposition enthalpy of sacrificial concrete increased by 10.14-23.11%, 6.51-27.66%, and 7.48%, respectively, when adding 0.1 wt% GSNSs; (2) the porosity and ablation velocity of sacrificial concrete reduced by 2.00-6.00% and 7.48%, respectively, due to the incorporation of GSNSs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Composites - Volume 82, September 2017, Pages 252-264
نویسندگان
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