Experimental Study on Mechanical and Thermal Behavior of Foamed Concrete

Kumar, Nishant; Arunkumar, C.; Senthil, S. Srinivasa

doi:10.1016/j.matpr.2017.12.302

Cited by 30 publications

(4 citation statements)

References 5 publications

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“…Next, the foaming agent was added to the mixture and blended for 10s. Finally, the preprocessed ceramsite was added, followed by a 15s stirring [12,13]. The workability of the mixture in each test group was measured, and a specified number of test blocks were prepared according to the preset technical indices.…”

Section: Experimental Materialsmentioning

confidence: 99%

Influence of Foaming Agent on Technical Performance of Ceramsite Aerated Concrete Blocks

Wang¹,

Wu²,

Zheng³

et al. 2019

ACSM

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The dosage of the foaming agent directly affects the technical performance of ceramsite aerated concrete (CAC). If the dosage is improper, the CAC will be difficult to prepare and unstable in technical performance. To improve the quality of the CAC blocks, this paper aims to disclose how the mix ratio of foaming agent affects the technical performance of the CAC blocks through experiments. Specifically, the CA5.0B07 CAC blocks were selected as the research object. The following indices were identified to characterize the technical performance of the CAC blocks, including workability, dry density, water absorption, compressive strength and thermal conductivity. Several CAC blocks were prepared with different mix ratios of the foaming agent: 0.05%, 0.10%, 0.15%, 0.20% and 0.25%. The mix ratios were determined empirically, and refer to the mass percentage of the foaming agent in the binding material. In addition, the linear interpolation was adopted to determine the rational interval of foaming agent dosage for the CAC blocks. The results show that the CAC blocks reached the technical levels for qualified product in current standards when the mix ratio of the foaming agent fell within 0.13%~0.23%, and those for superior product when the latter fell within 0.15%~0.20%. The research results provide a technical guide for actual production of the CAC blocks, and promotes the application of these blocks in the construction of energyefficient buildings.

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Section: Experimental Materialsmentioning

confidence: 99%

Influence of Foaming Agent on Technical Performance of Ceramsite Aerated Concrete Blocks

Wang¹,

Wu²,

Zheng³

et al. 2019

ACSM

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“…The overview of the compressive strength of foam concrete with various mixture compositions and densities presented in [3,15] showed the exponential decrease in the compressive strength with the reduction in the density of foam concrete. The review of research on the compressive strength reported in the literature also revealed that the density of foam concrete usually varies from 400 kg/m 3 to 1600 kg/m 3 [17], while the target density of lightweight FC usually equals 600 or 800 kg/m 3 , and for ultra-lightweight FC 400 kg/m 3 [1]. Only a few studies are devoted to materials of a density lower than 400 kg/m 3 .…”

Section: Introductionmentioning

confidence: 99%

“…These findings are consistent with the results obtained in [30], where the thermal conductivity of foam concrete ranged from 0.389 to 0.734 Wm −1 K −1 at a density of 1200, 1400 and 1600 kg/m 3 . For the foam concrete of the density from 860 kg/m 3 to 1245 kg/m 3 , the thermal conductivity varied from 0.021 to 0.035 Wm −1 K −1 [17].…”

Section: Introductionmentioning

confidence: 99%

Effect of Foaming Agent, Binder and Density on the Compressive Strength and Thermal Conductivity of Ultra-Light Foam Concrete

et al. 2022

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The study is focused on ultra-light foam concrete (FC) aimed as a thermal insulation material. Two important properties of such material were investigated: compressive strength and thermal conductivity. In the conducted tests, the influence of the air-dry density (200–500 kg/m3), type of foaming agent (synthetic and protein) and binder type (ordinary Portland cement—OPC; calcium sulphoaluminate cement—CSA; metakaolin; siliceous fly ash—SFA; calcareous fly ash—CFA) on the mentioned properties were examined. The results confirmed the dependence of compressive strength and thermal conductivity on the FC density but also indicated the important effect of the nature of the foaming agent and the binder type. The best thermo-mechanical properties were obtained for the foam concrete made of protein-based foaming agent, OPC and metakaolin. Simultaneously, the use of CSA mixed with metakaolin and foam based on the synthetic foaming agent also shows satisfactory properties.

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“…However, the material has a high strength-to-weight ratio even for low densities [6] which, in addition to the listed characteristics, have prompted the interest of researchers for the structural use of the material in novel alternatives and types [3,2]. Additionally, as a reduction in the elements self weight of a structure leads to a significant reduction in the loads that it resists, the decrease in resistant capacities does not necessarily imply a reduction in structural efficiency [7].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behaviour, Properties and Characteristics of Foamed Cellular Concrete: A Review

Retamal

Rougier

2022

AMR

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Foamed cellular concrete (FCC) is a type of lightweight concrete. Traditionally, it has been used for insulation and void filling. However, in the last years, the possibility of obtaining high strength FCC has motivated the study of its structural use. The novelty and uniqueness of this article is to provide a review of the most important aspect of FCC including component materials, design and mix elaboration, physical properties and mainly, its mechanical behaviour. Also, in order to achieve a global understanding of the material and its characteristics, advances regarding its physical properties are collected: density, porosity, thermal, acoustic and water insulation, durability, fire resistance and drying shrinkage. Then mechanical properties such as elastic modulus, compressive, tensile, bending and shear behaviour, are analysed. The literature review also aims to evaluate the influence of using inert and active mineral additions, fibers and chemical additives to improve its mechanical and physical properties. Based on the work done, research needs have been identified: there are no prediction models for stress-strain behaviour with complete curves for FCC in compression nor in traction, the performed numerical modelling is scarce, use and effect of chemical additives is a not far studied, long-term tests are scarce or nil, the evaluation of resistance in different aggressive environments has not been sufficiently evaluated.

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Experimental Study on Mechanical and Thermal Behavior of Foamed Concrete

Cited by 30 publications

References 5 publications

Influence of Foaming Agent on Technical Performance of Ceramsite Aerated Concrete Blocks

Influence of Foaming Agent on Technical Performance of Ceramsite Aerated Concrete Blocks

Effect of Foaming Agent, Binder and Density on the Compressive Strength and Thermal Conductivity of Ultra-Light Foam Concrete

Mechanical Behaviour, Properties and Characteristics of Foamed Cellular Concrete: A Review

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