کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
257576 503595 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Durability and testing of mortar with interground fly ash and limestone cements in sulfate solutions
ترجمه فارسی عنوان
دوام و آزمایش ملات با خاکسترهای خاکستر بین زمین و سیمان های سنگ آهک در محلول های سولفات
کلمات کلیدی
مقاومت سولفات، سولفات منیزیم، گسترش، کاهش وزن، کاهش قدرت، از دست دادن سطح سطح، تکنیک پردازش تصویر، سیمان بین زمینی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی


• For NS solution, an expansion test is appropriate for performance evaluation of all tested OPC and blended cement mortars.
• For MS solution, weight loss or SLIP technique is considered suitable to test IFAC mortars while the expansion test is not.
• For OPC and ILC mortars immersed in an MS solution, the suitable tests are both expansion and weight loss or SLIP technique.
• The ILC had advantages over the IFAC and OPC in such a way that it was less susceptible to the weight loss.
• The expansion of IFAC mortars was smaller than those made from the ILC and OPC.

This study was aimed to indicate the inadequacies of the presently used methods for testing sulfate resistance of cementitious systems, especially when tested in magnesium sulfate solution, and propose proper laboratory tests for evaluating the sulfate resistance of mortars with various types of binders. The test methods involved immersion of mortar specimens in 33,800 ppm sodium sulfate and magnesium sulfate solutions. The resistance of mortars with different binders to sulfate attack was evaluated by applying several test methods. Results of an investigation on sulfate resistance of ordinary Portland cement and interground cement mortars, which were tested by the test methods of expansion, weight loss, strength reduction, and surface area loss with an image processing technique (SLIP technique), are presented. It was observed that for sodium sulfate solution, an expansion test is appropriate for performance evaluation of all tested ordinary Portland cement and blended cement mortars. In the case of an magnesium sulfate solution, weight loss or surface area loss with an image processing technique is considered suitable to test interground fly ash cement mortars while the expansion test is not. However, for OPC and interground limestone cement mortars immersed in an magnesium sulfate solution, the suitable tests are both expansion and weight loss or surface area loss with an image processing technique (SLIP technique).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 64, 14 August 2014, Pages 39–46
نویسندگان
, , , , ,