FRESH AND HARDENED STATE PROPERTIES OF SCCs PREPARED WITH LIMESTONE-BASED MANUFACTURED AGGREGATES AND POWDER

Hulusi Özkul

doi:10.17780/ksujes.1100188

TR EN

KİREÇTAŞI ESASLI KIRMATAŞ AGREGA VE TAŞ TOZU İLE HAZIRLANAN KYB'LERİN TAZE VE SERTLEŞMİŞ HAL ÖZELLİKLERİ

Öz

Doğal kaynaklardan çıkarılan kum ve çakıl miktarı hızla tükendiği için kırmataş agregaların kullanımı sürdürülebilirlik açısından giderek önem kazanmaktadır. Bu çalışmada hem kum hem de iri agrega ve toz malzeme olarak kırma kalker ve filler malzemesi kullanılmıştır. Sonuç olarak, tüm beton bileşenlerinin tanecikleri köşeli bir şekle ve pürüzlü bir yüzeye sahiptir. Kendiliğinden yerleşen betonlar (KYB), maksimum agrega boyutu 10 veya 16 mm ve çimento içeriği 350 kg/m3 olacak şekilde hazırlanmıştır. Kireç taşı filleri miktarı 100 kg/m3'lük artışlarla 300 kg/m3'e kadar yükseltilmiştir. İnce malzeme miktarı ve maksimum iri agrega boyutunun KYB'lerin taze haldeki yayılma, akış, engeller arasından geçme, ayrışma ve reolojik özellikleri üzerindeki etkileri belirlenmiştir. Karışımların çökme akış performansları EFNARC standartlarına göre SF2 ve SF3 sınıflarında kalmasına rağmen özellikle 16 mm iri agrega boyutlu betonlar için çökme akış değerlerine göre daha uzun V-hunisi akış süreleri ve daha büyük J-halkası farklılıkları gözlenmiştir. Sertleşmiş haldeki özellikleri, basınç ve yarma-çekme dayanımları, elastisite modülü ve Poisson oranları ölçülerek incelenmiştir.

Anahtar Kelimeler

FRESH AND HARDENED STATE PROPERTIES OF SCCs PREPARED WITH LIMESTONE-BASED MANUFACTURED AGGREGATES AND POWDER

Abstract

Because the amount of sand and gravel extracted from natural resources is quickly depleting, the use of manufactured aggregates is becoming increasingly important in terms of sustainability. In this study, crushed limestone and filler material were used as both sand and coarse aggregate and powder material. As a result, all of the concrete components' grains had an angular form and a rough surface. Self-compacting concretes (SCC) were made with a maximum aggregate size of 10 or 16 mm and cement content of 350 kg/m3. The amount of limestone fine was raised in increments of 100 kg/m3 up to 300 kg/m3. The effects of fine material amount and maximum coarse aggregate size on spreading, flow, passing ability through the obstacles, segregation, and rheological properties of SCCs were determined. Although the mixtures' slump flow performances remained in the SF2 and SF3 classes according to EFNARC standards, longer V-funnel times and larger J-ring differences were obtained when compared to slump flow values, particularly for 16 mm aggregate size. The hardened state properties of concretes were examined by measuring the compressive and splitting tensile strengths, modulus of elasticity and Poisson ratio.

Keywords

Destekleyen Kurum

TÜBİTAK , İTÜ. BAP

Proje Numarası

MAG-115M483, 39476

Teşekkür

Yazarlar TÜBİTAK ve İTÜ. BAP Birimine desklerinden dolayı çok teşekkür ederler.

Kaynakça

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Ayrıntılar

Birincil Dil

İngilizce

Konular

İnşaat Mühendisliği

Bölüm

Araştırma Makalesi

Yazarlar

Hulusi Özkul ^*
0000-0002-6453-8956
Türkiye

Yayımlanma Tarihi

3 Eylül 2022

Gönderilme Tarihi

7 Nisan 2022

Kabul Tarihi

27 Temmuz 2022

Yayımlandığı Sayı

Yıl 2022 Cilt: 25 Sayı: 3

DOI

https://doi.org/10.17780/ksujes.1100188

IZ

https://izlik.org/JA28BE95CE

Kaynak Göster

RIS / Bibtex

APA

Özkul, H. (2022). FRESH AND HARDENED STATE PROPERTIES OF SCCs PREPARED WITH LIMESTONE-BASED MANUFACTURED AGGREGATES AND POWDER. Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi, 25(3), 259-272. https://doi.org/10.17780/ksujes.1100188

Cited By

Mechanical Properties of High-Strength Self-Compacting Concrete

ACS Omega

https://doi.org/10.1021/acsomega.3c01204