An investigation of using seawater as mixing water for alkali-activated slag pastes

Rashad, Alaa M.; Khalil, Mervat H.

doi:10.1007/s41062-022-00755-6

Cited by 3 publications

(2 citation statements)

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“…The results showed high owability and compressive strength when seawater was used in alkali activator. The rates of enhancement of compressive strength at the early ages were higher than those at the later ages but the enhancement rate was decreased at the later ages [2]. In another study of Rashad et al the effect of different ratios of untreated sea sand on the compressive strength and durability of y ash based geopolymer mortars activated with sodium silicate.…”

Section: Introductionmentioning

confidence: 96%

“…Natural salt water from sea or ocean accounts for approximately 97% of surface and subsurface water and it could be a potential choice for using in concrete when fresh water is too expensive to be used or unavailable [1]. It is expected that by 2050 approximately 75% of water demand to produce concrete will happen in areas most likely to experience water scarcity [2]. The cement based concrete production involves extensive use of water and caters higher emissions of CO 2 .…”

Section: Introductionmentioning

confidence: 99%

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A study of Fly-Ash and Slag Based Alkali Activated Binder Using Sea Water Based Alkaline Activator

Tadicharla,

2023

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This paper presents investigation in alkali activated paste and alkali activated mortar produced by combinations of flyash collected from coal based thermal power plant and ground granulated blast furnace slag collected from steel manufacturing facilities. The flyash and ground granulated blast furnace slag are industrial by products rich in aluminosilicates. The present study focuses on effect of utilization of seawater-based alkali activator solution in alkali activated paste and mortar. Alkali activator solution activates the chemical processes in binder materials when used in right concentrations and right proportion. This paper discusses the mechanical properties and microstructure characteristics of seawater-based alkali activated paste and mortar in comparison with conventional distilled water-based alkali activator. The usage of sea water shown insignificant change in setting times and compressive strengths for various combinations of binder material. The microstructure analysis also showed less variation in mineralogical formations when conventional distilled water is replaced with sea water in preparation of alkali activator solution.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%