Using Cementitious Materials Such as Fly Ash to Replace a Part of Cement in Producing High Strength Concrete in Hot Weather

Turuallo, Gidion; Mallisa, Harun

doi:10.1088/1757-899x/316/1/012039

Cited by 7 publications

(6 citation statements)

References 3 publications

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“…The results and findings suggest that the applications of the mixtures of GCW and BA/RHA as binder materials might decrease the consumption of OPC by 40% [ 28 ]. Substituting 10% to 20% of the OPC was found to be optimal in comparison to the concretes integrating BA [ 12 , 34 ].…”

Section: Resultsmentioning

confidence: 99%

“…In Southeast Asian countries such as Thailand, Malaysia, Vietnam, and Indonesia, biomass such as rice husk ash (RHA) [ 7 , 8 ], bagasse ash (BA) [ 9 , 10 , 11 ], and palm bunch are commonly used as fuel to generate electricity. The biomass ashes obtained as by-products are continuously increasing in quantity, causing waste disposal problems, air pollution, and contamination of soil and water resources [ 12 ]. Nonetheless, biomass ashes are natural materials and have intrinsic variations, causing the by-products to be correspondingly varied in both chemical composition and physical properties, resulting in varying properties of the concrete.…”

Section: Introductionmentioning

confidence: 99%

“…It was revealed that mixtures of pozzalan material with a high calcium oxide (CaO) content and GCW that is rich in calcium hydroxide (Ca(OH) 2 ) generate pozzolanic reactions, leading to end products equivalent to those produced from hydration processes of cement. According to Turuallo and Mallisa [ 12 ], mortars prepared from mixtures of fly ashes and GCW had compressive strengths of 20.9 MPa at 90 days. By weight, the optimal ratio of fly ash to GCW was 70:30.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Ground Calcium Carbonate Waste on the Properties of Green Self-Consolidating Concrete Prepared by Low-Quality Bagasse Ash and Rice Husk Ash

Lertwattanaruk

Makul

2021

Materials

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Bagasse ash (BA) and rice husk ash (RHA) are by-products from electricity power plants. Ground calcium carbonate waste (GCW) is the by-product of the mining of calcium carbonate (CaCO3) in the color pigment manufacturing industry. Both BA and RHA are classified as low-quality pozzolanic materials, differing from GCW, which contains a high calcium oxide (CaO) content that leads to products equivalent to the hydration reaction. Therefore, GCW is likely able to improve the properties of self-consolidating concrete (SCC) incorporating BA and RHA. This paper discusses the production of green self-consolidating concrete (gSCC) and identifies the benefit of using GCW in gSCC prepared by triple combined GCW (10 and 20 wt%), BA (10, 20, and 30 wt%), and RHA (20 wt%). The results indicate that the majority of the gSCC retain acceptable flowability. The differences in the levels of gSCC substitution and the V-funnel flow results show general correlations with the increase in GCW. The gSCC prepared by 10 wt% GCW associated with 10 wt% BA and 20 wt% RHA was improved significantly. The filling and passing abilities of the gSCC were improved by using GCW. In addition, gSCC achieved mechanical property development and was able to minimize the consumption of OPC by up to 40%.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of Ground Calcium Carbonate Waste on the Properties of Green Self-Consolidating Concrete Prepared by Low-Quality Bagasse Ash and Rice Husk Ash

Lertwattanaruk

Makul

2021

Materials

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“…It then cools and solidifies into spherical glassy particles called fly ash [8,9]. Generally, fly ash is used to replace original Portland cement in concrete up to 30% by mass of the total binder or cementitious material [10,11]. The use of fly ash as addition in concrete mixture can give many economical, technical and environmental benefits.…”

Section: Using Fly Ash In Concretementioning

confidence: 99%

Sustainable cementitious materials: The effect of fly ash percentage as a part replacement of portland cement composite (PCC) and curing temperature on the early age strength of fly ash concrete

Turuallo

Mallisa

2019

MATEC Web Conf.

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This research aims to determine the effect of fly ash percentage as a part replacement of Portland cement and curing temperatures to the early age strength of concrete. The percentages of fly ash used were 0, 10 and 15% by cement weight. The cured temperatures were 25, 30 dan 50°C. The concrete specimens were cubes of 150 x 150 x 150 mm3. The cubes, which were cured at 25°C, placed in water tank, while those cured at 30 and 50°C cured in oven until 7 days and then continued in water. The testing was conducted at ages 3, 7, 14 dan 28 days. The results showed that at early ages, the strength of concrete without fly ash cured at 25°C were higher than that of fly ash concrete. The higher level replacement of cement with fly ash, the lower strength of concrete obtained. The higher the curing temperature at earlier age resulted the higher the strength of concrete. The strength of concretes with 10% of fly ash cured at 25, 30 and 50°C at age three days were 15.111, 15.481 and 16.296 MPa respectively. Conversely, the strength of concrete that of cured at higher temperatures at ages 28 days, were lower than that of concretes cured at lower temperature. The results of this research also showed that fly ash could improve the workability of concrete.

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“…According to the research data, y ash without treatment is used in mortar constitutes 5% of cement showing a greater compressive strength (Kirkelund et al 2016). The proportioning of special concrete with y ash is up to 20% in compressive strength of 43.73MPa (Turuallo and Mallisa 2018). Besides, dosage of y ash in 30% as cement mixed in concrete was found that cementitious materials are generated leading to increasing of compressive strength (Zeng et al 2020).…”

Section: Introductionmentioning

confidence: 97%

Effects and mechanism of the conditions of sintering on heavy metal leaching characteristic in municipal solid waste incineration fly ash

Zhou

et al. 2022

Environ Sci Pollut Res

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Municipal solid waste incineration (MSWI) y ash treated with toxicity metals holds enormous potential for constructure use to economize on resources and protect environment. To reach the goal, this study investigated the effects of sintering conditions on leaching characteristic of heavy metals for MSWI y ash, especially Cr, Cr 6+ , Ag, and Ba, with orthogonal and Box-Benhnken design experiment, which considered grain size (D 50 =30, 45, and 60μm), uxing agent (CaO=0, 2.5, and 5%), setting temperature (1000, 1050, and 1100℃), and setting time (120, 180, and 240min). The mechanism of immobilization for heavy metals was also discussed through the analyses of morphological characterizations, mineral phases, chemical composition and leaching values of metals. The results indicated that changing grain size and adding uxing agent of CaO has positive in uence on reducing the leaching of heavy metals compared with direct sintering. The leaching values of As, Pb, Cd, Cu, Ni, Zn, Mn, Hg, Be, Se and uoride are not detected after sintering. Ideal sintered condition with desirability of 1.00 was predicted and optimized by Box-Benhnken response method in grain size of D 50 =30μm, uxing agent of CaO=5%, setting temperature=1050℃, and setting time=180min, which immobilized Cr, Cr 6+ , Ag, and Ba lower than the limitation of standards. Actual experiment was consistent with numerical optimization. Furthermore, the model of leaching characteristic for heavy metals in MSWI y ash was established to better explain the mechanism during sintering.

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Using Cementitious Materials Such as Fly Ash to Replace a Part of Cement in Producing High Strength Concrete in Hot Weather

Cited by 7 publications

References 3 publications

Influence of Ground Calcium Carbonate Waste on the Properties of Green Self-Consolidating Concrete Prepared by Low-Quality Bagasse Ash and Rice Husk Ash

Influence of Ground Calcium Carbonate Waste on the Properties of Green Self-Consolidating Concrete Prepared by Low-Quality Bagasse Ash and Rice Husk Ash

Sustainable cementitious materials: The effect of fly ash percentage as a part replacement of portland cement composite (PCC) and curing temperature on the early age strength of fly ash concrete

Effects and mechanism of the conditions of sintering on heavy metal leaching characteristic in municipal solid waste incineration fly ash

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