Title of article
Durability Performance of Self Compacting Concrete Incorporating Alccofine and Fly Ash
Author/Authors
Kavyateja, B.V Department of Civil Engineering - Jawaharlal Nehru Technological University, Anantapur, India , Jawahar, J.G Department of Civil Engineering - Annamacharya Institute of Technology and Sciences, Tirupati, India , Sashidhar, C Department of Civil Engineering - Jawaharlal Nehru Technological University, Anantapur, India
Pages
7
From page
1522
To page
1528
Abstract
The cost associated with the application of large volume of cement and synthetic admixtures was one of the major drawbacks of Self Compacting Concrete (SCC), which can be reduced by the use of supplementary cementitious materials (SCM). When the demand of cement reduces, the release of carbon dioxide (CO2) from cement industries will come down, which has a positive impact on global warming. The present paper reports an attempt in this direction by experimental examination on the fresh properties and durability performance of SCC by replacing cement with SCM such as fly ash (FA) and ultra-fine Ground Granulated Blast Furnace Slag (GGBS) in varying ratios. SCC mix was obtained by fixing the water-binder ratio and superplasticizer (SP) dosage with respect to total cementitious content. Along with the Fresh properties, SCC mixes incorporating both alccofine and fly ash at 10 and 25%, respectively; which gave the best fresh properties were selected to assess the durability issues. Incorporating 10% alccofine and 25% fly ash gave the best result in both fresh and durability studies in comparison with other combinations.
Farsi abstract
هزينه مرتبط با استفاده از حجم زيادي از سيمان و مواد افزودني مصنوعي يكي از مهمترين ايرادات بتن خود متراكم (SCC) است كه با استفاده از مواد اضافي سيماني (SCM) قابل كاهش است. وقتي تقاضاي سيمان كاهش يابد، ميزان دي اكسيد كربن (CO2) آزاد شده از صنايع سيمان كم مي شود كه اين امر تأثير مثبتي در مسئله گرمايش كره زمين دارد. مقاله حاضر با استفاده از يك بررسي آزمايشگاهي در خصوص خواص تازه و عملكرد دوام SCC با جايگزيني سيمان با SCM مانند خاكستر حاصل از احتراق (FA) و سرباره كوره گرانول فوق العاده ريز (GGBS) در نسبتهاي مختلف، سعي در اين راستا دارد. مخلوط SCC با تثبيت نسبت چسب - آب و دوز سوپر پلاستيسته با توجه به محتواي سيمان كل به دست آمد. همراه با خواص تازه، مخلوطهاي SCC كه شامل دو گروه الكوفيين و خاكستر حاصل از احتراق به ترتيب 10 و 25٪ به ترتيب كه بهترين خواص تازه را به دست مي آورند، براي ارزيابي مسائل مربوط به دوام انتخاب شدند. تركيب 10٪ الكوكسين و 25٪ خاكستر حاصل از احتراق در مقايسه با ساير تركيبات بهترين نتيجه را در مطالعات تازه و دوام داشته است.
Keywords
Carbonation Test , Chloride Permeability Test , Electrical Resistivity , Self Compacting Concrete , Water Absorption Test
Journal title
International Journal of Engineering
Serial Year
2020
Record number
2568179
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