دانشگاه صنعتی امیرکبیر نشریه مهندسی عمران امیرکبیر 2588-297X 50 4 2018 10 23 Studying the Effect of the Amount of Source Materials and Water to Binder Ratio on Chloride Ions Ingress in Alkali-Activated Slag Concretes بررسی تاثیر مقدار ماده پایه و نسبت آب به مواد سیمانی در نفوذ یون های کلراید در بتن ژئوپلیمری حاوی سرباره کوره آهن گدازی 673 684 695 10.22060/ceej.2016.695 FA علی اکبر رمضانیان پور دانشکده مهندسی عمران و محیطزیست، دانشگاه صنعتی امیرکبیر، تهران، ایران فرناز بهمن زاده 1 دانشکده مهندسی عمران و محیطزیست، دانشگاه صنعتی امیرکبیر، تهران، ایران آرش ذوالفقارنسب دانشکده مهندسی عمران و محیطزیست، دانشگاه صنعتی امیرکبیر، تهران، ایران امیرمحمد رمضانیان پور دانشکده مهندسی عمران، دانشگاه تهران، تهران، ایران Journal Article 2016 02 21 <span>Due to the high amount of CO</span><span class="A7"><span>2 </span></span><span>emission through the production of cement and great energy consumption in the cement industry, one of the most important issues in concrete technology is to find out an appropriate replacement for Portland cement. Alkali activated materials are the new approach for solving this problem. In fact, alkali activated concrete consists of an inorganic structure containing two parts: source material and alkaline activator liquid. In this study, the effect of the amount of source material and water to binder ratio on chloride ions ingress was evaluated. For this purpose, 5 mix designs were used to make alkali activated slag (AAS) concretes and for activating slag, 6 molar potassium hydroxide and sodium silicate solutions (wt. ratio: Na</span><span class="A7"><span>2</span></span><span>O/SiO</span><span class="A7"><span>2 </span></span><span>= 2.33) were employed as alkaline activator liquid. Additionally, one mix design was dedicated to ordinary Portland cement (OPC) concrete for the sake of comparison. </span><span>The properties of AAS concretes were examined by means of slump loss test, measurement of compressive strength at the ages of 1, 7, 28, 90 and 180 days and also capillary water absorption test at 7, 28 and 90 days. Furthermore, chloride ions penetration was measured through electrical resistivity test, rapid chloride migration test (RCMT) and resistance against chloride ions diffusion test according to NT Build 443. The results indicated that the performance of water to binder ratio and also the amounts of source material were comparable to that of ordinary Portland cement (OPC) concretes. Additionally, alkali activated slag (AAS) concretes had higher compressive strength and also superior durability against chloride ions penetration compared to OPC concretes.</span> <span lang="AR-SA" dir="RTL">از</span><span lang="AR-SA"> <span dir="RTL">آنجایی</span> <span dir="RTL">که</span> <span dir="RTL">در</span> <span dir="RTL">جریان</span> <span dir="RTL">فرآیند</span> <span dir="RTL">تولید</span> <span dir="RTL">سیمان</span> <span dir="RTL">مقدار</span> <span dir="RTL">نسبتا</span> <span dir="RTL">زیادی</span> <span dir="RTL">گاز</span> <span dir="RTL">دیاکسید</span> <span dir="RTL">کربن</span> <span dir="RTL">آزاد</span> <span dir="RTL">می‌شود</span> <span dir="RTL">و</span> <span dir="RTL">با</span> <span dir="RTL">توجه</span> <span dir="RTL">به</span> <span dir="RTL">این</span> <span dir="RTL">که این</span> <span dir="RTL">گاز</span> <span dir="RTL">یکی</span> <span dir="RTL">از</span> <span dir="RTL">آلاینده‌های</span> <span dir="RTL">اصلی</span> <span dir="RTL">محیط</span> <span dir="RTL">زیست</span> <span dir="RTL">و</span> <span dir="RTL">از</span> <span dir="RTL">جمله</span> <span dir="RTL">گازهای</span> <span dir="RTL">گلخانه‌ای</span> <span dir="RTL">به</span> <span dir="RTL">حساب</span> <span dir="RTL">می‌آید،</span> <span dir="RTL">پیدا</span> <span dir="RTL">کردن</span> <span dir="RTL">جایگزین</span> <span dir="RTL">مناسب</span> <span dir="RTL">برای سیمان</span> <span dir="RTL">در</span> <span dir="RTL">ساخت</span> <span dir="RTL">بتن</span> <span dir="RTL">موضوعی</span> <span dir="RTL">پراهمیت</span> <span dir="RTL">است</span></span><span>. <span lang="AR-SA" dir="RTL">استفاده</span><span lang="AR-SA"> <span dir="RTL">از</span> <span dir="RTL">بتنهای</span> <span dir="RTL">ژئوپلیمری</span> <span dir="RTL">از</span> <span dir="RTL">جمله</span> <span dir="RTL">راهکارهای</span> <span dir="RTL">نوین</span> <span dir="RTL">مطرح</span> <span dir="RTL">شده</span> <span dir="RTL">به</span> <span dir="RTL">عنوان جایگزینی</span> <span dir="RTL">برای</span> <span dir="RTL">بتنهای</span> <span dir="RTL">معمولی</span> <span dir="RTL">با</span> <span dir="RTL">سیمان</span> <span dir="RTL">پرتلند</span> <span dir="RTL">می‌باشد</span></span>. <span lang="AR-SA" dir="RTL">در</span><span lang="AR-SA"> <span dir="RTL">واقع</span> <span dir="RTL">در</span> <span dir="RTL">ساختار</span> <span dir="RTL">این</span> <span dir="RTL">دسته</span> <span dir="RTL">از</span> <span dir="RTL">بتن‌ها</span> <span dir="RTL">سیمان</span> <span dir="RTL">به</span> <span dir="RTL">عنوان</span> <span dir="RTL">ترکیب</span> <span dir="RTL">اصلی محسوب</span> <span dir="RTL">نمی‌شود</span> <span dir="RTL">و</span> <span dir="RTL">آنچه</span> <span dir="RTL">ترکیب</span> <span dir="RTL">آنها</span> <span dir="RTL">را</span> <span dir="RTL">تشکیل</span> <span dir="RTL">می‌دهد،</span> <span dir="RTL">دو</span> <span dir="RTL">بخش</span> <span dir="RTL">اصلی</span> <span dir="RTL">ماده</span> <span dir="RTL">پایه</span> <span dir="RTL">و</span> <span dir="RTL">ماده</span> <span dir="RTL">فعالساز</span> <span dir="RTL">است</span></span>. <span lang="AR-SA" dir="RTL">در</span><span lang="AR-SA"> <span dir="RTL">این</span> <span dir="RTL">تحقیق</span> <span dir="RTL">سرباره کوره</span> <span dir="RTL">آهنگدازی</span> <span dir="RTL">به</span> <span dir="RTL">عنوان</span> <span dir="RTL">ماده</span> <span dir="RTL">پایه</span> <span dir="RTL">و</span> <span dir="RTL">دو</span> <span dir="RTL">محلول</span> <span dir="RTL">پتاسیم</span> <span dir="RTL">هیدروکسید</span> <span dir="RTL">با</span> <span dir="RTL">غلظت</span> <span dir="RTL">6</span> <span dir="RTL">مولار</span> <span dir="RTL">و</span> <span dir="RTL">سدیم</span> <span dir="RTL">سیلیکات</span></span> )<span lang="AR-SA" dir="RTL">آب</span><span lang="AR-SA"> <span dir="RTL">شیشه</span></span>( <span lang="AR-SA" dir="RTL">با</span><span lang="AR-SA"> <span dir="RTL">مدول سیلیکاتی</span> <span dir="RTL">33/2</span> <span dir="RTL">به</span> <span dir="RTL">عنوان</span> <span dir="RTL">مواد</span> <span dir="RTL">فعال‌ساز</span> <span dir="RTL">مورد</span> <span dir="RTL">استفاده</span> <span dir="RTL">قرار</span> <span dir="RTL">گرفته‌اند</span></span>. <span lang="AR-SA" dir="RTL">برای</span><span lang="AR-SA"> <span dir="RTL">ارزیابی</span> <span dir="RTL">این</span> <span dir="RTL">نوع</span> <span dir="RTL">بتن</span> <span dir="RTL">5</span> <span dir="RTL">طرح</span> <span dir="RTL">اختلاط</span> <span dir="RTL">بتن</span> <span dir="RTL">ژئوپلیمری</span> <span dir="RTL">با هدف</span> <span dir="RTL">شناخت</span> <span dir="RTL">تاثیر</span> <span dir="RTL">مقدار</span> <span dir="RTL">ماده</span> <span dir="RTL">پایه</span></span> )<span lang="AR-SA" dir="RTL">سرباره</span>( <span lang="AR-SA" dir="RTL">و</span><span lang="AR-SA"> <span dir="RTL">همچنین</span> <span dir="RTL">اثر</span> <span dir="RTL">آب</span> <span dir="RTL">به</span> <span dir="RTL">مواد</span> <span dir="RTL">سیمانی</span> <span dir="RTL">انتخاب</span> <span dir="RTL">شده‌اند</span></span>. <span lang="AR-SA" dir="RTL">یک</span><span lang="AR-SA"> <span dir="RTL">طرح</span> <span dir="RTL">اختلاط</span> <span dir="RTL">بتن</span> <span dir="RTL">معمولی با</span> <span dir="RTL">سیمان</span> <span dir="RTL">پرتلند</span> <span dir="RTL">نیز</span> <span dir="RTL">برای</span> <span dir="RTL">مقایسه</span> <span dir="RTL">این</span> <span dir="RTL">دو</span> <span dir="RTL">نوع</span> <span dir="RTL">بتن</span> <span dir="RTL">در</span> <span dir="RTL">نظر</span> <span dir="RTL">گرفته</span> <span dir="RTL">شده‌است</span></span>.<span dir="RTL"> <span lang="AR-SA">در</span></span><span lang="AR-SA"> <span dir="RTL">این</span> <span dir="RTL">تحقیق،</span> <span dir="RTL">خواص</span> <span dir="RTL">بتن</span> <span dir="RTL">تازه</span> <span dir="RTL">با</span> <span dir="RTL">استفاده</span> <span dir="RTL">از</span> <span dir="RTL">آزمایش</span> <span dir="RTL">افت</span> <span dir="RTL">اسلامپ</span> <span dir="RTL">و</span> <span dir="RTL">خواص</span> <span dir="RTL">مکانیکی</span> <span dir="RTL">بتن</span> <span dir="RTL">سخت شده</span> <span dir="RTL">از</span> <span dir="RTL">طریق</span> <span dir="RTL">اندازه گیری مقاومت</span> <span dir="RTL">فشاری</span> <span dir="RTL">در</span> <span dir="RTL">سنین</span> <span dir="RTL">7،</span> <span dir="RTL">28</span> <span dir="RTL">،</span> <span dir="RTL">90</span> <span dir="RTL">و</span> <span dir="RTL">180</span> <span dir="RTL">روز</span> <span dir="RTL">ارزیابی</span> <span dir="RTL">گردیده است</span></span>. <span lang="AR-SA" dir="RTL">همچنین</span><span lang="AR-SA"> <span dir="RTL">نفوذپذیری</span> <span dir="RTL">بتن‌ها</span> <span dir="RTL">به</span> <span dir="RTL">وسیله</span> <span dir="RTL">آزمایش</span> <span dir="RTL">جذب</span> <span dir="RTL">موئینه آب</span> <span dir="RTL">در</span> <span dir="RTL">سنین</span> <span dir="RTL">7،</span> <span dir="RTL">28</span> <span dir="RTL">و</span> <span dir="RTL">90</span> <span dir="RTL">روزه</span> <span dir="RTL">اندازه‌گیری</span> <span dir="RTL">شده است</span></span>. <span lang="AR-SA" dir="RTL">آزمایش‌های</span><span lang="AR-SA"> <span dir="RTL">مقاومت</span> <span dir="RTL">الکتریکی،</span> <span dir="RTL">مهاجرت</span> <span dir="RTL">تسریع</span> <span dir="RTL">شده</span> <span dir="RTL">یون‌های</span> <span dir="RTL">کلراید</span> <span dir="RTL">و تعیین</span> <span dir="RTL">ضریب</span> <span dir="RTL">انتشار</span> <span dir="RTL">با</span> <span dir="RTL">استفاده</span> <span dir="RTL">از</span> <span dir="RTL">پروفیل</span> <span dir="RTL">نفوذ</span> <span dir="RTL">یون‌های</span> <span dir="RTL">کلراید</span> <span dir="RTL">برای</span> <span dir="RTL">بررسی</span> <span dir="RTL">دوام</span> <span dir="RTL">این</span> <span dir="RTL">نوع</span> <span dir="RTL">بتن‌ها</span> <span dir="RTL">در</span> <span dir="RTL">برابر</span> <span dir="RTL">نفوذ</span> <span dir="RTL">یون‌های</span> <span dir="RTL">کلراید به</span> <span dir="RTL">کار</span> <span dir="RTL">گرفته</span> <span dir="RTL">شده‌اند</span></span>.<span dir="RTL"> <span lang="AR-SA">براساس</span></span><span lang="AR-SA"> <span dir="RTL">نتایج</span> <span dir="RTL">عملکرد</span> <span dir="RTL">بتن‌های</span> <span dir="RTL">ژئوپلیمری</span> <span dir="RTL">در</span> <span dir="RTL">برابر</span> <span dir="RTL">تغییرات</span> <span dir="RTL">ماده</span> <span dir="RTL">پایه</span> <span dir="RTL">و</span> <span dir="RTL">نسبت</span> <span dir="RTL">آب</span> <span dir="RTL">به</span> <span dir="RTL">مواد</span> <span dir="RTL">سیمانی</span> <span dir="RTL">نسبتا</span> <span dir="RTL">مشابه</span> <span dir="RTL">بتن‌های</span> <span dir="RTL">معمولی می‌باشد</span></span>. <span lang="AR-SA" dir="RTL">از</span><span lang="AR-SA"> <span dir="RTL">سوی</span> <span dir="RTL">دیگر</span> <span dir="RTL">از</span> <span dir="RTL">مقایسه</span> <span dir="RTL">این</span> <span dir="RTL">دو</span> <span dir="RTL">نوع</span> <span dir="RTL">بتن</span> <span dir="RTL">مشاهده</span> <span dir="RTL">می‌شود</span> <span dir="RTL">که</span> <span dir="RTL">بتن‌های</span> <span dir="RTL">ژئوپلیمری</span> <span dir="RTL">مقاومت</span> <span dir="RTL">و</span> <span dir="RTL">دوام</span> <span dir="RTL">نسبتا</span> <span dir="RTL">بهتری</span> <span dir="RTL">نسبت به</span> <span dir="RTL">بتن‌های</span> <span dir="RTL">معمولی</span> <span dir="RTL">با</span> <span dir="RTL">سیمان</span> <span dir="RTL">پرتلند</span> <span dir="RTL">را</span> <span dir="RTL">دارا</span> <span dir="RTL">می‌باشند</span></span>.</span> https://ceej.aut.ac.ir/article_695_e4bb4c5173c2ce17fd8fcd40041c068f.pdf