NDLI: Properties of lightweight aggregates produced with cold-bonding pelletization of fly ash and ground granulated blast furnace slag

Content Provider	Springer Nature Link
Author	Gesoğlu, Mehmet Güneyisi, Erhan Öz, Hatice Öznur
Copyright Year	2012
Abstract	Pelletization is a worldwide process used in producing artificial aggregates although its usage is not common in Turkey. In this study, lightweight aggregates (LWAs) were manufactured through cold-bonding pelletization of ground granulated blast furnace slag (G) and two types of fly ash with different finenesses (Fly ash A and B). Ordinary Portland cement (PC) was used as a binder at varying amounts from 5 to 20 % by weight. A total of 20 cold-bonded lightweight aggregates were produced at room temperature with different combinations of PC, FA and/or G. The hardened aggregates were tested for specific gravity, water absorption, and crushing strength. Thereafter, lightweight concretes (LWCs) were produced with water to cement ratio of 0.50 and a cement content of 400 kg/m$^{3}$ by using such lightweight aggregates. The hardened concretes were tested for compressive strength at 28 and 56 days to explore the effect of aggregate types on the compressive strength development. Test results revealed that the amount of cement content had a significant effect on the strength of LWAs which in turn governed the variation in compressive strength of the LWCs. The highest 28 and 56-day compressive strengths of 43 and 51 MPa, respectively were achieved for the concretes including LWAs produced from the blend of 40 % slag, 40 % FA-A and 20 % PC.
Starting Page	1535
Ending Page	1546
Page Count	12
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	45
Issue Number	10
e-ISSN	18716873
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-04-24
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fly ash Ground granulated blast furnace slag Lightweight aggregate (LWA) Lightweight concrete (LWC) Pelletization Theoretical and Applied Mechanics Operating Procedures, Materials Treatment Materials Science Structural Mechanics Building Materials Civil Engineering
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

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