پیش بینی مقاومت فشاری بتن های حاوی میکروسیلیس و پلیمر استایرن بوتادین به‌وسیلۀ مدل ریاضی

نوع مقاله : یادداشت پژوهشی

نویسندگان

• عباس حق اللهی ¹
• امیر طریقت ¹
• محمد شفیعی زاده ²

¹ شهید رجایی

² دانشگاه تربیت دبیر شهید رجایی

10.22067/civil.v28i2.16318

چکیده

چکیده این مقاله، تأثیرات متقابل میکروسیلیس و پلیمر استایرن بوتادین (SBR) را بر مقاومت فشاری بتن بررسی می نماید. تحلیل نتایج مقاومت فشاری 32 مخلوط بتنی با 2 نسبت آب به مواد سیمانی (45/0 و 35/0) و چهار درصد جایگزینی میکروسیلیس ( 10%، 5/7%، 5%، 0% ) و چهار درصد پلیمر استایرن بوتادین (15%، 10%، 5%، 0% ) بررسی شده است. یک مدل ریاضی براساس قانون آبرامز، بهمنظور پیش‌بینی مقاومت بتن‌های حاوی SBR و میکروسیلیس پیشنهاد شده است. این مدل ساده، ممکن است به‌عنوان راهنمایی مناسب برای اختلاط مخلوط‌های بتنی حاوی میکروسیلیس و پلیمراستایرن بوتادین به‌کار رود.

کلیدواژه‌ها

• بتن، میکروسیلیس
• پلیمر استایرن بوتادین
• مقاومت فشاری
• مدل ریاضی

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عنوان مقاله [English]

Prediction Compressive Strength of Concretes Containing Silica Fume and Styrene-butadiene Rubber (SBR) with a Mathematical Model

نویسندگان [English]

• abbas haghollahi ¹
• Amir Tarighat ¹
• Mohamad Shafieyzadeh ²

¹ Shahid Rajaee Teacher Training University

² Shahid Rajaee Teacher Training University

چکیده [English]

This paper deals with the interfacial effects of silica fume (sf) and styrene-butadiene polymer (SBR) on compressive strength of concrete. Analyzing the compressive strength results of 32 concrete mixes performed over two water-binder ratios (0.35, 0.45), four percentages replacement of silica fume (0%, 5%, 7.5%, 10%) and four percentages of SBR (0%, 5%, 10%, 15%) were investigated. A mathematical model base on Abrams’ law has been proposed for evaluation strength of silica fume-SBR concretes. This simplified model might serve as useful guides for commixture concrete admixtures containing of silica fume and SBR. The accuracy of the proposed model is investigated

کلیدواژه‌ها [English]

• concrete
• Silica fume
• SBR
• Compressive Strength
• Mathematical modeling

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