Hydro-abrasive erosion of concrete incorporating ground blast-furnace slag and ground basaltic pumice

Binici, Hanifi; Aksoğan, Orhan; Görür, Ela Bahşude; Kaplan, Hasan; Bodur, Mehmet

doi:10.1016/j.conbuildmat.2008.03.003

Cited by 34 publications

(9 citation statements)

References 9 publications

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“…The concrete containing GGBFS usually has retarded setting times and lower early-age strength, but shows higher later strength and better durability compared with Portland cement concrete (Binici et al, 2009;Pal et al, 2003). Steel slag is an industrial waste from either the conversion of iron to steel in a basic oxygen furnace (Alanyali et al, 2009;Peng and Hwang, 2010;Wang and Yan, 2010a;Xue et al, 2006), or in melting of scrap to make steel in an electric arc furnace (Manso et al, 2004(Manso et al, , 2006Muhmood et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Effects of steel slag admixture with GGBFS on performances of cement paste and mortar

Guo

Shi

2014

Advances in Cement Research

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The feasibility of steel slag powder as a combined admixture with ground granulated blast furnace slag (GGBFS) in cement-based materials was explored. The effects of steel slag powder on normal consistency water requirement, setting times, fluidity, mechanical strength and hydration products of cement paste/mortar were studied. The results showed that the optimum addition content of steel slag powder in combined admixture was less than 20%. Steel slag powder decreased normal consistency water requirement, retarded setting time of cement paste and had positive effects on the fluidity of cement mortar. As the curing ages increased, the flexural and compressive strengths of mortars with combined admixture increased rapidly to even higher than that of the blank sample. Additionally, early-age strength could be improved by increasing the specific surface area of the steel slag powder. Hydration products mainly included calcium-silicate-hydrate (C-S-H) gel, C-S-Al-H gel and Ca(OH) 2 . Mixing these two powders of GGBFS and steel slag powder had a positive effect regarding the hydration of steel slag powder. Additionally, this research contributes to understanding of how to manage industrial wastes sustainably and has the potential to provide several important environmental and economic benefits. NotationA 7 7-day activity coefficient of admixture A 28 28-day activity coefficient of admixture F relative fluidity L fluidity of test samples L 0 fluidity of control sample R 7 7-day compressive strength of test samples R 28 28-day compressive strength of test samples R 07 7-day compressive strength of control sample R 028 28-day compressive strength of control sample

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Section: Introductionmentioning

confidence: 99%

Effects of steel slag admixture with GGBFS on performances of cement paste and mortar

Guo

Shi

2014

Advances in Cement Research

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“…Computational modeling of a comprehensive process of concrete deterioration is very difficult, including the correct determination of initial and boundary conditions. One alternative is the application of standardized experimental methods or targeted testing which is usually focused only on one of the degradation mechanisms (for example American Concrete Institute, 1998; American Society for Testing and Materials, 2002;Horszczaruk, 2009;Horszczaruk, 2004) and often takes inordinately long time (Binici et al, 2009). Leaving the effects of chemical or biological degradants aside, the so-called high-speed water flows represent a promising (Hlaváček et al, 2019) and relatively popular (Momber et al, 1999;Hu et al, 2002;Momber, 2016;Momber, 2017) method to simulate the flow of frequently contaminated liquids with high or low amount of free hard particles of different sizes.…”

Section: Introductionmentioning

confidence: 99%

X-Ray CT inspection of subsurface areas of concretes exposed to fast flowing liquids

Sitek

Hlaváček

Souček

et al. 2019

New Trends in Production Engineering

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Concrete structures affected for a long time by flowing liquids are exposed to gradual erosion in surface layers caused by a combination of several degradation processes: abrasion, cavitation and chemical or bacterial impacts. Due to the complex phenomena and difficult-to-define initial and boundary conditions, the whole process cannot be easily simulated using the conventional computing tools. Laboratory experimental research is thus the most appropriate approach for the investigation of a suitable composition of concrete resistant to the flowing liquids. However, the methods used are often very time consuming and last even several years. High-speed water flows can be elegantly used for the acceleration of the mechanical simulation of a real situation. Several experiments on the effects of the high-speed water flows on concrete surfaces have been carried out. Using the X-Ray CT methods, subsurface structures of concretes exposed to the accelerated mechanical simulation of the erosion wear caused by fast flowing liquids were investigated and presented in the article. It has been shown that the simulation does not cause initiation of new fractures or cracks in the original concrete structure. The pure water flow mainly removes the hardened cement paste and reveals the aggregate grains. The water flow with abrasive particles disintegrates in greater depths and washes out entire aggregate grains, eventually amputates them and finally smoothens entire surface.

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“…Apart from composition of concrete mixture, the resistance of concrete to abrasive action is also dependent on external conditions to which concrete is exposed. The research conducted by various authors shows that the concrete produced with various mineral admixtures (silica powder, fly ash, blast furnace slag, milled basalt) [16][17][18][19][20], with the addition of still fibres [21][22][23][24], and polypropylene fibres [25][26], or with aluminate cement, high strength concrete, rolled concrete, and addition of recycled granulated rubber [27][28], have to a smaller or greater extent a better abrasive resistance in comparison with reference concrete produced without any admixtures, with the common Portland cement. The concrete used for construction of hydraulic structures, which is in direct contact with water, apart from having good mechanical properties, must also be resistant to hydro-abrasion.…”

Section: Introductionmentioning

confidence: 99%

Hydro-abrasive resistance and mechanical properties of rubberized concrete

2014

JCE

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Hydro-abrasive resistance and mechanical properties of rubberized concrete Results obtained by testing hydro-abrasive resistance and mechanical properties of concrete with rubber granules are presented in the paper. Fine river aggregate is replaced with 10, 20, and 30 percent of recycled granulated rubber (with respect to the total volume). Research results demonstrate that replacement of fine river aggregate by granulated rubber increases hydro-abrasive resistance of concrete by up to 10 percent. The replacement of fine river aggregate by rubber increases the energy dissipation capacity and ductility.

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Hydro-abrasive erosion of concrete incorporating ground blast-furnace slag and ground basaltic pumice

Cited by 34 publications

References 9 publications

Effects of steel slag admixture with GGBFS on performances of cement paste and mortar

Effects of steel slag admixture with GGBFS on performances of cement paste and mortar

X-Ray CT inspection of subsurface areas of concretes exposed to fast flowing liquids

Hydro-abrasive resistance and mechanical properties of rubberized concrete

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