بررسی اثر جایگزینی پسماند معادن خاک نسوز با سیمان در مشخصات مکانیکی و روانی بتن

محرر, امیرحسین; قائدیان, داوود; افتخار, محمد حسین

doi:10.30478/jcsm.2023.419013.1345

بررسی اثر جایگزینی پسماند معادن خاک نسوز با سیمان در مشخصات مکانیکی و روانی بتن

نوع مقاله : مقاله پژوهشی

نویسندگان

¹ گروه مهندسی عمران، دانشگاه فنی و حرفه ای ، تهران، ایران

² هیات علمی گروه عمران- دانشگاه آزاد اسلامی واحد اقلید

³ مدیر امور فنی و مهندسی بنیاد بتن ایران

10.30478/jcsm.2023.419013.1345

چکیده

چکیده :

با توجه به اینکه سیمان بعنوان اصلی ترین مصالح تشکیل دهنده بتن در سال های اخیر بعلت هزینه های مستقیم و غیر مستقیم زیاد مورد توجه دانشمندان ومحققین حوزه صنعت ساختمان بوده است. خاک سیاه نسوز که بعنوان مواد زائد از معادن کارخانجات کاشی سازی استخراج می شود بعنوان معضل شناخته شده و در صورت استفاده در صنایع دیگر می تواند برای حفظ محیط زیست موثر باشد. در این پژوهش 216 نمونه در قالب 24 نسبت مخلوط و در سنین 7 و 28 و 90 روزه ساخته و پس از انجام آزمایشات مقاومت فشاری و اسلامپ و همچنین عکسبرداری الکترونی می توان دریافت که استفاده از میزان بهینه پسماند خاک سیاه نسوز می تواند تغییری در مقاومت فشاری بتن در سنین بالا ننماید که خود این می تواند نشانگر مثبت بودن امکان استفاده از این پسماند به جای سیمان در بتن بمنظور کاهش هزینه محصول نهایی و حفظ محیط زیست در راستای توسعه پایدار باشد. در این پژوهش مشاهده گردید در درصد جایگزینی 5 و 10 درصد خاک سیاه با سیمان در مقاومت 28 روزه و درصد جایگزینی 15 درصد در مقاومت 90 روزه می توان بعنوان درصد بهینه جایگزینی معرفی نمود.

کلیدواژه‌ها

موضوعات

تکنولوژی بتن

عنوان مقاله [English]

Investigating the Effects of Substituting Non-fired Black Soil Waste for Cement on the Mechanical and Flubility Properties of Concrete

نویسندگان [English]

amirhossein moharrer ¹
davood ghaedian ²
hossein eftekhar ³

¹ Department of Civil Engineering, Technical and Vocational University (TVU), Tehran, Iran

² Department of Civil Engineering, Azad and Islamic University of Eqlid

³ Technical Manager and Engineering of Bonyad Beton Company

چکیده [English]

A b s t r a c t

Considering cement as the main constituent material of concrete, in recent years, it has received significant attention from researchers and scientists in the construction industry due to high direct and indirect costs. Non-burnt black soil, which is extracted as waste material from ceramic tile factories, is a recognized problem, and its utilization in other industries can have a positive impact on environmental preservation. In this study, 216 samples were prepared in the form of 24 mix ratios and at ages of 7, 28, and 90 days. After conducting compressive strength and slump tests, as well as electron microscopy imaging, it can be observed that the optimal utilization of non-burnt black soil waste can bring about changes in the compressive strength of concrete at higher ages, indicating the potential use of this waste as a substitute for cement in concrete to reduce the cost of the final product and promote environmental preservation towards sustainable development. In this study, it was observed that a replacement percentage of 5% and 10% of black soil with cement at 28 days and a replacement percentage of 15% at 90 days can be introduced as the optimal substitution percentage.

کلیدواژه‌ها [English]

Green Concrete
Non-Burnt Black Soil Waste Powder
Concrete Compressive Strength
Cement Substitution
Material Recycling
Environment

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