Activation of Blast Furnace Slag with Soda Production Waste

Date

2020-01-01

Author

Bilginer, Baki Aykut
Erdoğan, Sinan Turhan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

193
views

0
downloads

Although the absence of portland cement (PC) in alkali-activated slag (AAS) lowers its carbon footprint, conventional alkaline activators like sodium silicate are expensive and have large environmental impacts. Soda solid waste (SSW) is an alkaline waste of the glass industry, and its disposal poses environmental problems. This study investigated the use of SSW to activate ground slag at 60 degrees C-120 degrees C. Strength development of mortars and heat evolution of pastes were evaluated. Hydration products were studied using X-ray diffraction and thermal analysis. Strength gain, rapid in the first 3-7 days, is attributed to formation of amorphous phases and partly crystalline calcium silicate hydrate (C-S-H). Increasing SSW content causes a weaker and broader rate of heat evolution peak in the first few hours and evolves greater total heat in the first day. SSW-activated slag pastes evolve significantly less heat up to 7 days than a typical room-temperature-cured PC paste but similar when heat is normalized by compressive strength. Mortars containing 40% slag and 60% SSW reach similar to 20 MPa after 7 days of curing at 120 degrees C. (c) 2019 American Society of Civil Engineers.

Subject Keywords

General Materials Science, Mechanics of Materials, Civil and Structural Engineering, Building and Construction

URI

https://hdl.handle.net/11511/57327

Journal

JOURNAL OF MATERIALS IN CIVIL ENGINEERING

DOI

https://doi.org/10.1061/(asce)mt.1943-5533.0002987

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

Properties of Ground Perlite Geopolymer Mortars Erdoğan, Sinan Turhan (American Society of Civil Engineers (ASCE), 2015-07-01) Perlite is a volcanic aluminosilicate abundant in several countries that are major producers of portland cement. The amorphous nature and silica-to-alumina ratio of ground perlite indicate that it can be activated with alkaline solutions. This study presents the strength development of mixtures containing only ground perlite as their powder binder, activated with sodium hydroxide and/or sodium silicate solutions, at room temperature or using oven curing. The structure of the formed geopolymers is investigat...
Development of silica fume-based geopolymer foams Shakouri, Sahra; Bayer, Özgür; Erdoğan, Sinan Turhan (Elsevier BV, 2020-11-01) Thermal insulation materials are critical for reducing the energy consumption and carbon emissions associated with buildings. A good insulation material must not only have low density and sufficient mechanical properties but also resist high temperatures and fires. In addition, its production process must be simple and inexpensive. This study describes the production of very low density (>85 kg/m(3)) inorganic foams with high porosity (<94%). Silica fume and NaOH solutions are mixed to prepare a geopolymer ...
Investigation of the elastic material properties of Class G cement Guner, DOĞUKAN; Öztürk, Hasan; Erkayaoğlu, Mustafa (Wiley, 2017-02-01) Class G cements are sulfate-resistant Portland cements with different setting time requirements and have a common field of use in the oil industry. Compared to other American Petroleum Institute class cements, Class G has a utilization of more than 95% worldwide in oil well applications. Different additives are used together with Class G cement to achieve optimum hardening conditions. In this study, the elastic material properties of high sulfate-resistant (HSR) Class G cements are investigated for a specia...
Synthesis of special cement with fluidised bed combustion ashes Selçuk Yüce, Nihal; Soner, I.; Selçuk, Emre (Thomas Telford Ltd., 2010-04-01) Fluidised bed combustion (FBC) ashes containing a significant amount of free calcium oxide and calcium sulfate in addition to valuable inorganic acidic oxide ingredients such as silicon oxide, ferric oxide and aluminium oxide can be utilised as potential raw materials in the production of non-expansive belite-rich calcium sulfoaluminate cement, which is one of the special cement types having performance characteristics similar to those of ordinary Portland cement in addition to having lower energy requireme...
Investigation of Moisture Dissipation in Foam-Based Warm Mix Asphalt Using Synchrotron-Based X-Ray Microtomography Kutay, M. Emin; Öztürk, Hande Işık (American Society of Civil Engineers (ASCE), 2012-06-04) Foam-based Warm Mix Asphalt (WMA) technologies decrease the viscosity of the asphalt so that it is workable during construction. However, after construction, viscosity increases rapidly as the foam disappears and temperature drops. During the process of dissipation of foam, depending on the environmental conditions, the moisture may not escape and may be trapped inside the mixture. This trapped moisture can cause detrimental failures by breaking the adhesive bonds between the aggregates and the asphalt bind...

Citation Formats

B. A. Bilginer and S. T. Erdoğan, “Activation of Blast Furnace Slag with Soda Production Waste,” JOURNAL OF MATERIALS IN CIVIL ENGINEERING, pp. 0–0, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57327.