مصالح و سازه های بتنی

مصالح و سازه های بتنی

ارزیابی آزمایشگاهی خصوصیات تازه، مکانیکی و دوام بتن خودتراکم مبتنی بر سیمان و ترکیبی از پودر سرامیک و پودر شیشه در شرایط عمل‌آوری متفاوت

نوع مقاله : مقاله پژوهشی

نویسندگان
گروه عمران، واحد بندر انزلی، دانشگاه آزاد اسلامی، بندرانزلی، ایران
چکیده
تولید سیمان بعنوان یکی از اجزای اصلی بتن منجر به ایجاد حجم زیادی گاز co2 و اثرات مخرب زیست‌ محیطی می‌شود. از طرف دیگر حجم بالای ضایعات صنعتی یکی دیگر از معضلات زیست محیطی است و جایگزینی آنها با سیمان می‌تواند باعث تولید بتن دوست‌دار محیط‌زیست شود. هدف از این پژوهش ارزیابی آزمایشگاهی مشخصات مکانیکی و دوام بتن خود‌تراکم با ترکیب پودر سرامیک و شیشه بعنوان جایگزین بخشی از سیمان تحت شرایط عمل‌آوری در آب و هوای آزاد و در برابر محلول سدیم کلرید می‌باشد. بدین ترتیب نتایج 5 نمونه بتن ساخته شده حاوی 10 درصد پودر سرامیک و 5، 10، 15و 20 درصد پودر شیشه با نمونه شاهد مقایسه می‌گردد. نتایج حاکی از تاثیر مثبت پودر سرامیک و شیشه بر خصوصیات بتن تازه بوده و همچنین خصوصیات مکانیکی و دوام بتن خود‌تراکم را بهبود می‌بخشد. جایگزینی‌ها غالبا سبب کاهش میزان نفوذپذیری نمونه‌ها و رفتار مناسب آنها در محلول سدیم کلرید شده است. بهترین نتایج، مختص به نمونه حاوی 10 درصد پودر سرامیک و شیشه است که حداکثر مقاومت فشاری نمونه‌های 28 و 90 روزه را در هوای آزاد حدود 33 و 14 درصد و در شرایط عمل‌آوری در آب 27 و 23 درصد بیشتر از بتن شاهد نشان می‌دهد.
کلیدواژه‌ها

موضوعات


عنوان مقاله English

Laboratory evaluation of fresh, mechanical properties and durability in self-compacting concrete based on cement and a combination of ceramic and glass powder under different processing conditions

نویسندگان English

Kobra Moharrami Chalgar
Maryam Kefayati
Department of civil engineering, Bandar Anzali Branch, Islamic Azad University, Bandar Anzali, Iran
چکیده English

Cement production as a principal component of concrete releases huge amounts of co2 leading to harmful environmental effects. Moreover, the noticeable amount of industrial waste is another environmental issue and the reuse of them as partial replacement for cement is a step forward to producing eco-friendly concrete. This paper describes the combined influence of Ceramic Powder (CP) to replace 10 percent and Glass Powder (GP) to replace 5, 10, 15 and 20 percent of the cement in Self-Compacting Concrete (SCC). This research evaluates the mechanical and durability characteristics under different conditions of curing in standard water and normal weather and Sodium Chloride Solution (SCS). In this research, 5 samples were cast to compare the results with the original sample. Results determined that CP and GP improve the properties of fresh concrete. It also enhances the mechanical properties and durability of SCC, especially in SCS. Substitutions often decrease the amount of water absorption and enhance electrical resistance. The best results are for the sample containing 10 percent CP and GP in which maximum compressive strength at 28 and 90 days in normal weather are 33 and 14 percent and in standard water are 27 and 23 percent more than ordinary concrete.

کلیدواژه‌ها English

Self-compacting concrete
Mechanical properties
Durability properties
Ceramic powder
Glass powder
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  • تاریخ دریافت 02 خرداد 1402
  • تاریخ بازنگری 17 آبان 1403
  • تاریخ پذیرش 30 آبان 1403