Abstract
This study evaluated the use of electrolyzed alkaline-reduced water instead of an alkaline activator for the production of a strong cement matrix with a large blast furnace slag replacement ratio. The flexural and compressive strength measurements, X-ray diffraction analysis, and scanning electron microscopy images of the cement matrices produced using electrolyzed alkaline-reduced water and regular tap water, and with blast furnace slag replacement ratios of 30 and 50% were compared to a normal cement matrix. The cement matrix produced using electrolyzed alkaline-reduced water and blast furnace slag exhibited an improved early age strength, where hydrate formation increased on the particle surface. The cement matrix produced using electrolyzed alkaline-reduced water exhibited a high strength development rate of over 90% of ordinary Portland cement (OPC) in BFS30. Therefore, the use of electrolyzed alkaline-reduced water in the place of an alkaline activator allowed for the formation of a very strong cement matrix in the early stages of aging when a large blast furnace slag replacement ratio was used.
Highlights
Cement is an important material that is extensively used in construction
The flexural strength of the mortar was evaluated according to the blast furnace slag (BFS) replacement ratio (Figure 4)
The effect of the electrolyzed alkaline-reduced water was similar to previous reports using a 5 M NaOH alkaline activator
Summary
Cement is an important material that is extensively used in construction. The manufacture of cement currently accounts for approximately 18% of the total CO2 emissions of the manufacturing sector [1,2,3,4]. The cement industry has been subject to numerous domestic and international sanctions in an effort to reduce its CO2 generation, which is a major cause of global warming. Prominent research in the domestic and foreign construction industries has focused on the reduction of CO2 [5,6,7]
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