Foamed concrete consists of cement matrix and air-foam and has more complicated structure characteristics than normal concrete.. The elastic modulus calculation model for the spherical shell element of foamed concrete is constructed based on the Walsh formula and the assumption of spherical pores. Moreover, the theoretical prediction model is established by introducing the two-layer embedded model for the elastic modulus of foamed concrete. Foamed concrete shows excellent physical characteristics such as low self weight, relatively high strength and superb thermal and acoustic insulation properties. It allows for minimal consumption of aggregate, and by replacement of a part of cement by fly ash, it contributes to the waste utilization principles. EPS foam is a lightweight, rigid type of foam board. The closed-cell nature of EPS keeps water absorption low and improves R-value. The R-value per inch of EPS can change based on the desired density of the foam, but it is typically in the 3.6 to 4.1 range.
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The modulus of elasticity of foam concrete measures its stiffness and is determined by the density and compressive strength. Foam concrete is a lightweight cement, water, foam, and fine aggregate material. It has a wide range of construction, insulation, and soundproofing applications. The modulus of elasticity of foam concrete is essential for determining its properties, such as its ability to withstand compression and tension and its resistance to fatigue and creep. The modulus of elasticity of foam concrete can be calculated from its density and compressive strength. The density of foam concrete is usually determined by the ratio of cement to water and foam. In contrast, the compressive strength is determined by the amount of cement and water used. The modulus of elasticity of foam concrete is calculated as the ratio of the compressive strength to its density. The modulus of elasticity of foam concrete is generally in the range of 0.5-2.0 MPa, with higher values associated with higher densities and compressive strengths. The modulus of elasticity of foam concrete is also affected by the type of foam used, as different types of foam can affect the density and compressive strength of the material. The modulus of elasticity of foam concrete is determined by its density and compressive strength. Higher densities and compressive strengths lead to higher moduli of elasticity, while the type of foam used can also affect the value.
References:
Ahmed, S., & Khan, M. (2020). Foam Concrete: Properties and Applications. In Properties and Applications of Foam Concrete (pp. 1–18). Woodhead Publishing.
Kasiri, M., & Ghafoori, N. (2016). Compressive strength and modulus of elasticity of high-strength foam concrete. Construction and Building Materials, 114, 522-532.
Moura, C. F. R., & Silva, C.C. (2013). Mechanical properties of foamed concrete. Materials Research, 16(2), 284-291.
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