Compressive Strength Prediction of Fly Ash-Based …
The compressive strength of concrete is a crucial parameter in structural design, yet its determination in a laboratory setting is both time-consuming and expensive. The prediction of compressive strength in fly ash …
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Fly Ash-Based Eco-Efficient Concretes: A Comprehensive …
Among different SCMs used in concrete production, fly ash (FA) an industrial by-product of mineral coal burning made up from fine fuel particles found from flue gases and coal-fired …
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Experimental Research on Durability of Fly Ash Pavement …
By comparing with three groups of ordinary mix proportion, the performances (e.g., mechanical properties, durability, and brittle property) of the optimized mix proportion were …
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Compressive strength prediction and low-carbon optimization of fly ash
Portland cement concrete (PCC) is a major contributor to human-made CO2 emissions. To address this environmental impact, fly ash geopolymer concrete (FAGC) has emerged as a promising low-carbon alternative. This study establishes a robust compressive strength prediction model for FAGC and develops an optimal mixture design method to achieve …
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Properties of soft Bangkok clay stabilized with cement and fly ash …
Fly ash (FA) with brown color and specific gravity (Gs) [46] of 2.31 was obtained from the Mae Moh power plant in Thailand. The X-Ray Fluorescence Spectrometer (XRF) technique was used to determine the chemical composition of FA, as shown in Table 1.The amount of SiO 2 + Al 2 O 3 + Fe 2 O 3 was 77.15% by weight. The calcium oxide (CaO) …
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Enhancing Concrete Performance through …
Using class-C and class-F fly ash in concrete production presents potential for resource reduction, energy efficiency, transportation impacts, enhanced durability, recycling prospects, and waste management strategies.
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Determination of Fracture Mechanic Parameters …
This study presents test results and deep discussion regarding measurements of the fracture toughness of new concrete composites based on ternary blended cements (TCs). A composition of the most commonly used …
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The Effect of Mechanical Activation of Fly Ash on Cement …
Fly ash from coal represents the foremost waste product of fossil fuel combustion. These waste materials are most widely utilised in the cement and concrete industries, but the …
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Studies of Fracture Toughness in Concretes Containing Fly Ash …
Concrete composites at an early age with siliceous fly ash and noncondensed silica fume in the cement composition obtain higher values of strength parameters (30% to over 60%) as well as fracture mechanics parameters (40% to over 80%) in comparison to the values obtained for plain concrete.
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Effect of ultra-fine fly ash on concrete performance and …
The DPS devices classifies fly ash in four main size fractions: fine fly ash (FA1), ultra-fine fly ash (FA2), and medium and coarse fly ash fractions. In this study both the fine and …
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Understanding the impact of synthesis parameters on the …
Geopolymer concrete is an eco-efficient and environmentally friendly construction material. Various ashes were used as the binder in geopolymer concrete, such as fly ash, ground granulated blast ...
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Materials | Free Full-Text | Determination of Fracture …
AMA Style. Golewski GL. Determination of Fracture Mechanic Parameters of Concretes Based on Cement Matrix Enhanced by Fly Ash and Nano-Silica.
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Evaluation of cracking potential parameters for low to high …
Like most performance parameters of concrete, cracking potential is also significantly affected by the binder type. ... [19] and 50 % fly ash [20] compared to OPC concrete. Fly ash is also reported to reduce the tendency of thermal cracking [21], [22]. ... Several methods have been suggested for determining cracking potential parameters, ...
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On the Development of Fly Ash-Based Geopolymer …
produce concrete, instead of the cement paste. Fly ash, one of the source materials for geopolymer binders, is available abundantly worldwide, and yet its use ... several parameters on the ...
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Optimum mix parameters of high-strength self-compacting concrete …
Also, the pH value for all the mixes was observed to be greater than 11. Deicing salt surface scaling weight loss increased with the increase in fly ash content except with mix containing 15% fly ash. At 365 days age, the weight loss was almost consistent for all percentages of fly ash varying between 0.525 and 0.750 kg/m 2.
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Measurement of fracture mechanics parameters of concrete containing fly
The concrete composites with mineral additives have become more important in terms of their economic properties over the last few years, mainly due to the following reason: the Kyoto Protocol was the first agreement between nations to mandate country-by-country reductions in greenhouse-gas emissions (GHG).Unfortunately, the cement industry is one of …
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Strength-based life cycle CO2 of fly ash concrete: Variation …
The addition of fly ash (FA) to concrete will not only reduce the CO 2 content of concrete but also affect the compressive strength of concrete. However, most studies on carbon emissions have underestimated the complexity of the relationship of emissions with the concrete mix design and compressive strength. In this study, a database of mix designs was established …
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Enhancing the properties of swelling soils with lime, fly ash, …
The presence of organic content in the soil has detrimental impacts on the physical and strength behavior of the soil . studied the influence of fly ash as an additive to ordinary Portland cement for the stabilization of highly organic soils, finding that stabilization effects on the soil-cement admixture increased when fly ash additives were ...
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Compressive strength of concrete material using machine …
Fig. 8 also illustrates cement, superplasticizer, and age of the concrete are positively correlated with compressive strength, and the remaining other parameters are inversely correlated with the strength of the concrete, which denotes compressive strength of concrete decreases with the increase in water, fly ash, fine aggregate, and coarse ...
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Prediction model for the compressive strength of green concrete …
There are various waste materials and by-products that can be used as replacement of cement in the concrete mixture, such as cement kiln dust, blast furnace slag, fly ash, silica fume, recycled ...
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Fly ash for sustainable construction: A review of fly ash …
Fly ash can be utilised as a cement replacement, reducing cement usage, thus environmentally and economically beneficial. Fly ash makes concrete workable; increasing its levels may reduce water demand and superplasticizer needs. Fly ash can improve mechanical …
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Understanding the impact of synthesis parameters on the …
The relationship between multiple synthesis parameters and pore characteristics of FABGs was detailedly studied through range analysis and correlation detection analysis, ... Surface fractal analysis of pore structure of high-volume fly-ash cement pastes. Appl. Surf. Sci., 257 (3) (2010), pp. 762-768. View PDF View article View in Scopus Google ...
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Use and effect of fly ash in concrete: A literature review
On the other hand, several properties of the incorporation of fly ash in different types of concrete, such as polymeric co ncrete, were recognized, where the percen tage of replacem ent fluctuates
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Estimation of compressive strength of waste concrete utilizing fly ash …
Fly ash (FA) is a waste product of the thermal coal manufacturing process. It is pozzolanic that have the properties of binding materials which get polymerized under high temperature with an ...
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The Effect of Mechanical Activation of Fly Ash on Cement …
Adding fly ash to concrete improves workability because the fly ash ... It is important to note that mechanical activation can successfully increase the solubility of several mineral ... stated that 5% of UFA and 15% of AFA is marginal for cement paste because higher amounts significantly deteriorate the cement paste hydration parameters.
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Factors influencing the compressive strength of fly ash …
This paper describes the effects of several factors on the properties of fly ash based geopolymer concrete, especially the compressive strength.
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PARTIAL REPLACEMENT OF CEMENT WITH FLY ASH IN …
Particle Size of Fly ash particles are typically fine, ranging from less than one micron to several hundred microns in size. The particle size distribution can affect the pozzolanic properties of fly ash. ... Shrinkage of fly ash concrete is like pure cement concrete in all grades of OPC. According to Bendapudi S.C.K and Saha P (2011) [4], ...
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Rheology of Cement Pastes with Siliceous Fly Ash and the …
The use of fly ash in cement composites adversely affects its mechanical properties during the first days of mixture curing. ... Therefore, most of the presented studies were carried out within a few or several hours after the pastes were made. ... Golewski G.L. Effect of nano admixture of CSH on selected strength parameters of concrete ...
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A study on strength parameters of concrete with expanded fly ash …
The Expanded Fly Ash Clay Aggregate (EFCA) is used in addition to the Fly Ash and Bottom Ash. In this paper, an investigation was carried out using the M20 concrete mix. This is done with Cement and F.A., Bottom Ash, Expanded Fly Ash Clay Aggregate, fine aggregate, and coarse aggregate at the rates of 6%, 12%, 13%, 22%, and 25%, respectively.
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Evaluation of tensile properties and cracking potential …
Generally, the risk of plastic shrinkage-induced cracking depends on several parameters, including tensile deformation capacity, stiffness, and plastic shrinkage [8], [9].In order to reduce the plastic shrinkage in cement-based materials, researchers have begun to use fly ash (FA) as supplementary cementitious materials [10], [11], [12].For example, Wang and Yu et al. …
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