Basic Study on the Durability of Mortar Containing Blast Furnace Slag Fine Powder with Different Basicity

Subpa-Asa, Prang; Ta, Yasutaka; Matsunaga, Hisahiro; Date, Shigeyuki

doi:10.4028/www.scientific.net/kem.896.119

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…Therefore, BFS is also used as a fine aggregate or powder during construction [2]. In addition, concrete containing BFS has been found to have improved properties such as porosity, density, and long-term strength, and excellent resistance to sulfuric acid, frost damage, and salt damage [3][4][5][6][7]. Furthermore, it is known to have a high immobilization capacity for chloride ions and is expected to inhibit the penetration of chloride ions.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Salt Preventive Properties of Blast Furnace Slag with Different Blaine Values and Curing Condition

Mochida

Nito²,

Fujiwara³

et al. 2022

MSF

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Since sustainable development is becoming incredibly influential, the concrete and cement industries are reducing negative environmental impacts. Previous studies have reported salt damage effects on reinforced concrete structures on various methods to prevent salt damage. The solution is to substitute the raw materials required in cement with industrial by-products from manufacturing steel products, including blast furnace slag (BFS). Since it strengthens the concrete structure, the chloride ion penetration must also be considered. Using BFS with various Blaine values investigated the effect of BFS on blocking resistance and chloride ion penetration. This study focused on delaying the permeation of chloride ions and conducted a study using blast furnace slag. The cement replacing with blast furnace slag improves the salt preventive performance and detoxifies chloride ions. This study examined fluctuations in the blast furnace slag Blaine value affect the salt preventive property by steam curing condition. The result confirmed that the compressive strength increases as the blast furnace slag with a higher Blaine value are used also confirmed that the study improved the salt preventive performance by increasing the addition rate of the blast furnace slag fine powder.

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Section: Introductionmentioning

confidence: 99%

A Study on the Salt Preventive Properties of Blast Furnace Slag with Different Blaine Values and Curing Condition

Mochida

Nito²,

Fujiwara³

et al. 2022

MSF

View full text Add to dashboard Cite

show abstract

Evaluation of the Prediction and Durability on the Chloride Penetration in Cementitious Materials with Blast Furnace Slag as Cement Addition

Subpa-Asa

Nito²,

Fujiwara³

et al. 2022

Construction Materials

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Blast furnace slag (BFS) is a mortar additive in which the utilization of varied curing conditions and the basicity of BFS determine the fineness of the resulting mortar and, thereby, its salt prevention properties. This study evaluates and compares the salt-prevention properties of mortar prepared by either steam curing or water curing. The physical properties, for example, the BFS fineness, revealed the factors significantly affected by basicity that influence the salt-preventive properties of mortar in the specimens examined, such as the lead time and diffusion coefficient. Furthermore, these factors were also significantly affected by differences in curing conditions and other physical properties. However, few studies have examined its use in reducing chloride ion permeability as the main factor of corrosion reactions. Thus, this study evaluates specific surface, water/binder ratio (W/B), and curing conditions on the chloride penetration in cementitious materials with blast furnace slag as cement addition in terms of delaying chloride ion penetration, which affects corrosion reactions. Results of the study are intended to guide development of products for use in the precast concrete industry, toward extending the life of concrete structures, especially reinforced concrete structures in marine environments. In addition, the resulting durability measurements from the experiment conducted are illustrated. This study indicates that differences in Blaine size properties significantly influence water curing. Furthermore, results reveal the effects of combining BFS with various Blaine values and ratio-affecting properties on mortar. In conclusion, concrete materials that decrease durability against chloride attack and improve mechanical properties for precast manufacturer industrial applications are successfully developed in this study. In addition, the use of water-curing conditions, high Blaine value, high cement replacement ratio, and W/B tend to improve the general mechanical property performance and durability against chloride ion attack.

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Basic Study on the Durability of Mortar Containing Blast Furnace Slag Fine Powder with Different Basicity

Cited by 2 publications

References 10 publications

A Study on the Salt Preventive Properties of Blast Furnace Slag with Different Blaine Values and Curing Condition

A Study on the Salt Preventive Properties of Blast Furnace Slag with Different Blaine Values and Curing Condition

Evaluation of the Prediction and Durability on the Chloride Penetration in Cementitious Materials with Blast Furnace Slag as Cement Addition

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