آزمایش رسانایی الکتریکی اصلاح‌شده برای سنجش مقاومت بتن درمقابل نفوذ یون‌های کلرید

مهندسی عمران فردوسی

مقاله 6، دوره 30، شماره 2 - شماره پیاپی 18، اردیبهشت 1396، صفحه 77-91   

نوع مقاله: پژوهشی

شناسه دیجیتال (DOI): 10.22067/civil.v29i2.48944

نویسندگان

امیررضا پیلوار^{* 1}؛ علی اکبر رمضانیانپور²؛ حسین رجایی²

¹موسسه آموزش عالی توس.

²دانشگاه صنعتی امیرکبیر

چکیده

در این مقاله روشی جدید برای سنجش مقاومت بتن در مقابل نفوذ یون‌های کلرید ارائه شده است که شامل اشباع‌سازی نمونه‌ها توسط محلول NaCl 5 مول، قبل از اندازه‌گیری رسانایی آنها می‌باشد. با اشباع کردن نمونه‌ها توسط محلول با رسانایی بالا، رسانایی‌های نمونه‌های مختلف بتنی متناسب با ساختار منافذ آنها می‌شود. برای بررسی عملکرد این روش، طرح‌های اختلاط مختلف بتن ساخته شد. مشاهده گردید که نتایج روش ارائه‌شده حساسیت کمتری نسبت به رسانایی مایع منفذی درمقایسه با روش‌های آزمایش نفوذ تسریع‌یافتۀ یون‌های کلرید (RCPT) و رسانایی حجمی (BC) دارد. همچنین ارتباط خوبی بین نتایج این روش با نتایج آزمایش انتشار حجمی (BD) به‌دست آمد.

کلیدواژه‌ها

بتن، نفوذپذیری کلریدی؛ رسانایی الکتریکی؛ مایع منفذی

سایر فایل های مرتبط با مقاله

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مراجع

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