Evaluation of Properties of Aerated Concrete Partially Replaced by Cement With Fly Ash

Raj, Indu Susan; John, Elson

doi:10.34218/ijaret.10.1.2019.022

Cited by 4 publications

(4 citation statements)

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“…The results of this study (refer to Figure 6) correspond to the effects of Ref. [4], which produced the optimum compressive strength at a percentage of 30% fly ash. Fly ash has a high silica content to increase the compressive strength of concrete.…”

Section: Compressive Strength Testingsupporting

confidence: 70%

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The Effects of Fly Ash and Bottom Ash on the Properties of Aerated Concrete under Density-Based Mix Design

Radna Kurnia Sari,

Rosidawani,

Arie Putra Usman

et al. 2023

ARASET

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Lightweight concrete has the main characteristic of a lower density value than normal concrete, which ranges from 1400 to 1850 kg/m3 (ACI 213R) [1]. While density values generally show a decreasing trend along with decreasing mechanical properties. This type of lightweight concrete still needs to be improved in its application to elements that function but do not withstand loads (non-structural) due to its low mechanical properties. The main objective of producing lightweight concrete is its density. In contrast, another objective is the mechanical properties related to the use of lightweight concrete as a non-structural or structural material. Thus, physical properties in the form of density and mechanical properties in the form of compressive strength are important parameters in producing lightweight concrete. The mix method used in lightweight concrete is different from conventional concrete. The foaming agent used in manufacturing lightweight concrete will result in compressive strength and density results that are different from conventional concrete. In this study, lightweight concrete was made using the aerated technique: a foaming agent in aluminum powder and comprises cement, sand, fly ash, bottom ash, water, and superplasticizer. Fly ash as a substitute for cement and bottom ash as a substitute for sand with percentages of 0%, 15%, and 30%, and of 0%, 25%, and 50%, respectively. Those materials were aimed to optimize the composition of aerated concrete. The mix design was conducted with a density-based mix design of density targets of 1000 kg/m3, 1200 kg/m3, 1600 kg/m3, and 1800 kg/m3. The parameters used to assess the research results were slump value, setting time, density, compressive strength, and water absorption. While the consistency and stability values were found to be an indicator of the achievement of this density-based mix design. The performance indexes which demonstrate the attainment of compressive strength and predicted density in the aerated concrete, show that the mix designs meet the requirements of non-structural lightweight concrete. The mix of ingredients, particularly fly ash and bottom ash, has a considerable influence on the relationship between compressive strength and density in aerated concrete.

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Section: Compressive Strength Testingsupporting

confidence: 70%

“…However, developing aerated concrete with higher mechanical characteristics for use as structural elements is still in progress. This challenge is because the physical characteristics of this type of concrete are not dense due to the presence of air voids, which decrease its compressive strength [4].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Fly Ash and Bottom Ash on the Properties of Aerated Concrete under Density-Based Mix Design

Radna Kurnia Sari,

Rosidawani,

Arie Putra Usman

et al. 2023

ARASET

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show abstract

“…Fig. 5: Development of concrete compressive strength using fly ash (Singh et al, 2015;Gull et al, 2020;Ariff et al, 2019;Susan et al, 2019;Swarup et al, 2017) Fig. 6: Development of concrete compressive strength using different percentages of RHA (Singh et al, 2015;Gull et al, 2020;Thakur, 2019)…”

Section: Compressive Strength Test Of Concretementioning

confidence: 99%

“…1: SEM micrograph of fly ash particle (Sahmaran et al, 2007) Fly ash has median particle size 16.23 µm and specific gravity 2.180 (g/cm 3 ) (Ranjbar et al, 2014). Several researchers analyzed ideal level of replacement for strength and durability properties of concrete such as (Singh et al, 2015;Gull et al, 2020;Ariff et al, 2019;Susan, 2019). From their work it is found that 10% to 15% replacement of cement by fly ash gives satisfactory outcomes in terms of compressive strength, tensile strength and flexural strength.…”

Section: Introductionmentioning

confidence: 99%

A Review on Partial Replacement of Cement in Concrete by Three Supplementary Materials

et al. 2022

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This paper explores the consequence of replacing cement by fly ash, rice husk ash and lime in concrete. For widespread use of these supplementary materials, it is important to ensure the quality of resultant concrete. In this paper literature related with workability, density, compressive strength, flexural strength and splitting tensile strength are analyzed. Main advantages and drawbacks of using these materials in terms of engineering properties are mentioned. Another aim of this review is to identify major research needed in this field to use these materials worldwide given that concrete is the most extensively used man-made material. IUBAT Review—A Multidisciplinary Academic Journal, 5 (1): 54-67

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Combined effect of silica fume and fly ash as cementitious material on strength characteristics, embodied carbon, and cost of autoclave aerated concrete

Lashari

Kumar

et al. 2022

Environ Sci Pollut Res

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Evaluation of Properties of Aerated Concrete Partially Replaced by Cement With Fly Ash

Cited by 4 publications

References 0 publications

The Effects of Fly Ash and Bottom Ash on the Properties of Aerated Concrete under Density-Based Mix Design

The Effects of Fly Ash and Bottom Ash on the Properties of Aerated Concrete under Density-Based Mix Design

A Review on Partial Replacement of Cement in Concrete by Three Supplementary Materials

Combined effect of silica fume and fly ash as cementitious material on strength characteristics, embodied carbon, and cost of autoclave aerated concrete

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