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Lightweight foamed concrete (LWFC) is.Foamed concrete is produced either by a prefoaming or a mixed foaming method. The prefoaming method involves the separate production of base mix cement slurry (cement paste or mortar) and a stably preformed (foaming agent with water) and then the thorough blending of this foam into a base mix. In mixed foaming, the surface-active agent is mixed with the base mix ingredients and foam is produced during the mixing process, resulting in a cellular structure in the concrete [3]- [5]. Structural lightweight concrete (SLWC) is similar to normal-weight concrete except that it has a lower density [6]. SLWC is defined as a concrete having a compressive strength of up to 17 MPa with a bulk density less than 1950 kg/m 3 ; structural lightweight concrete can be 25 % lighter than normal-weight concrete but have a compressive strength of up to 60 MPa [7]. The term high-performance concrete (HPC) is used for concrete mixes that possess the following three properties: highworkability, highstrength and high durability [8].Plain concrete is a brittle material, which results in poor fracture toughness, poor resistance to crack propagation and low impact strength. This inherent brittleness has limited its application in fields requiring high impact, vibration and fracture strengths. Fibres are used to modify the tensile and flexural strengths, toughness, impact resistance and fracture energy, and to arrest crack formation and propagation and thus improve strength and ductility [9]-[12]. Glass fibres improve the strength of the material by increasing the force required for deformation and enhance the toughness by increasing the energy required for crack propagation [13]. Ghorpade [14] investigated the effect of glass fibre on high-performance concrete with silica fume as an admixture. The maximum percentage increase in compressive strength was observed at 1 % fibre and 10 % silica fume content. The flexural strength increases with up to 1 % of fibre volume, thus, the strength decreases. Polypropylene fibres are the most popular of the synthetics. They are chemically inert, hydrophobic and lightweight. Polypropylene fibres reduce plastic shrinkage cracking and subsidence cracking over steel reinforcement [6]. Banthia and Gupta [15] investigated the influ-

Researchers have continuously attempted to reduce and recycle construction waste. Ceramic waste is mainly a byproduct of the manufacturing process. About 25% of the waste is produced because of dimension defects or incurring problems throughout the industrial process. This article aims to highlight the alternative uses of ceramic waste. In this research, ceramic waste at a powder status is reduced to fine aggregates. Here, ceramic waste powder (CWP) is used in different ratios of 25%, 50%, 75%, and 100% replacing the fine aggregate weight. Aluminum powder is used to obtain aerated concrete (AC). Glass fibers are added in ratios of 1%, 1.5%, and 2% of cement weight to obtain a fiber‐reinforced AC. The unit weight, compressive strength, splitting tensile strength, and thermal conductivity are estimated. Furthermore, scanning electron microscopy is performed to investigate the microstructure features of the composite. The results exhibit better performance in compressive and splitting tensile strength when fine aggregates were replaced by 25% and 50% of CWP. In addition, 1.5% of GFs enhance the compressive and splitting tensile strength. In addition, increasing the CWP decreases the unit weight of fiber‐reinforced AC. It is shown that CWP strongly influences the thermal conductivity of the fiber‐reinforced AC, resulting in a high composite resistant to heat transmission. The technique for order preference by similarity to an ideal solution method is used to obtain the optimal mix.

This research study the mechanical properties of lightweight concrete reinforced with polypropylene fibers. Foam agent used to produce lightweight foamed concrete. The aim of this study to investigate the effect of polypropylene fibers on mechanical properties of lightweight foamed concrete. The volume fractions of the polypropylene fibers (PPF) used are: 0.0%, 0.1%, 0.2%, 0.3%, 0.4%, and 0.5% total volume of concrete. The flowability, dry density, compressive strength and splitting tensile strength, were measured. The results shows, the flowability of lightweight foamed concrete reduced by addition polypropylene fibers. The compressive strength and splitting tensile strength increased with rising the percentages of polypropylene fibers.