کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
257067 503574 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Prediction of the curing time to achieve maturity of the nano cement based concrete using the Weibull distribution model
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Prediction of the curing time to achieve maturity of the nano cement based concrete using the Weibull distribution model
چکیده انگلیسی


• Fabrication of the nano cement based concrete.
• Effectiveness of the nano cement based concrete in building construction.
• Prediction of the maturity of the nano cement based concrete.
• Prediction of the rate of change of compressive strength with curing time.
• Assessment of the maturity time using weibull distribution model (99% confidence).

The present investigation deals with the optimization of the curing time using the Weibull distribution model, analyzing the rate of change of compressive strength of the nano cement based concrete. In this investigation, the nano cement was synthesized by sol–gel method using nano silica and hydrated alumina. Additionally, nano cement based concrete was fabricated varying the aggregate and alkali activator content. After measuring the compressive strength of the concrete at four desired curing times viz., 3, 7, 14 and 28 days, the required curing time to achieve a particular rate of change of the compressive strength has been predicted utilizing the equation derived from the variation of the rate of change of compressive strength with the curing time, prior to the optimization of the curing time (at the 99.99% confidence level) using the Weibull distribution model. Results revealed that the required curing time to achieve complete maturity of the nano cement based concrete is ∼21 days, while for Portland cement, it is 28 days. Therefore, it can be assessed that the required time for building construction would be less considering the nano cement as a primary binding material instead of Portland cement.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 84, 1 June 2015, Pages 307–314
نویسندگان
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