Lightweight Concrete: An Alternative for Recycling Cellulose Pulp

Andrés, Federico N.; Beltramini, Loreley; Guilarducci, Anabela; Romano, Melisa Soledad; Ulibarrie, Néstor

doi:10.1016/j.mspro.2015.04.142

Cited by 10 publications

(2 citation statements)

References 5 publications

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“…e optimum solution for this problem is to use the waste material in the construction products [8]. As per the Confederation of European Paper Industries, the paper industry waste is predominantly used in landfills [9], energy recovery, and is used on composting or land spreading [10]. As per the existing research of Agulló et al [11] and Ahmadi and Al-Khaja [12], the paper pulp has been used as the replacement of mineral filler material in concrete mixes.…”

Section: Introductionmentioning

confidence: 99%

Force‐Deformation Study on Glass Fiber Reinforced Concrete Slab Incorporating Waste Paper

Praburanganathan

Sudharsan

Reddy

et al. 2022

Advances in Civil Engineering

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This study inspects the viability of engaging the discarded paper wastes in concrete by varying the volume proportions from 0%–20% with each 5% increment in replacement of the weight of cement. A physiomechanical study was conducted, and the results were presented. A glass fiber reinforced rectangular slab with a longer span (ly) to shorter span (lx) ratio of (ly: lx) 1.16 was cast with optimum replacement of waste-paper mass and compared the force-deformation characteristics with the conventional concrete slab without waste paper. The optimum percentage of discarded papers for the replacement of cement is 5%. Also, the results imply that the compressive strength at the age of 28 days is 30% improved for the optimum replacement. Based on the outcomes of the investigation, it can be inferred that the compressive strength gets progressively reduced if the volume of the discarded paper gets increases. The incorporation of glass fibers improves the split and flexural strength of the concrete specimens considerably. The ultimate load-carrying capacity of the glass fiber reinforced waste paper incorporated concrete slab measured 42% lower than that of the conventional slab. However, development of the new type of concrete incorporating waste papers is the new trend in ensuring the sustainability of construction materials.

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Section: Introductionmentioning

confidence: 99%

Force‐Deformation Study on Glass Fiber Reinforced Concrete Slab Incorporating Waste Paper

Praburanganathan

Sudharsan

Reddy

et al. 2022

Advances in Civil Engineering

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“…As is shown in [ 24 , 53 , 54 , 55 ], the incorporation of waste paper fiber (WPF) has improved the properties of hardened cement-based composites. Thanks to the well-known homogeneity and composition of recycled fibers from waste paper, they are increasingly added in small amounts to cement mortars, providing a high-performance mortar/plaster with an insulating function and low environmental impact [ 56 , 57 ]. According to the results in the literature [ 58 ], the WPFs addition (0.2% by mass of cement) was found to show a significant self-shrinkage cracking control, while providing some internal curing.…”

Section: Introductionmentioning

confidence: 99%

Recycled Cellulose Fiber Reinforced Plaster

et al. 2021

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This paper aims to develop recycled fiber reinforced cement plaster mortar with a good workability of fresh mixture, and insulation, mechanical and adhesive properties of the final hardened product for indoor application. The effect of the incorporation of different portions of three types of cellulose fibers from waste paper recycling into cement mortar (cement/sand ratio of 1:3) on its properties of workability, as well as other physical and mechanical parameters, was studied. The waste paper fiber (WPF) samples were characterized by their different cellulose contents, degree of polymerization, and residues from paper-making. The cement to waste paper fiber mass ratios (C/WPF) ranged from 500:1 to 3:1, and significantly influenced the consistency, bulk density, thermal conductivity, water absorption behavior, and compressive and flexural strength of the fiber-cement mortars. The workability tests of the fiber-cement mortars containing less than 2% WPF achieved optimal properties corresponding to plastic mortars (140–200 mm). The development of dry bulk density and thermal conductivity values of 28-day hardened fiber-cement mortars was favorable with a declining C/WPF ratio, while increasing the fiber content in cement mortars led to a worsening of the water absorption behavior and a lower mechanical performance of the mortars. These key findings were related to a higher porosity and weaker adhesion of fibers and cement particles at the matrix-fiber interface. The adhesion ability of fiber-cement plastering mortar based on WPF samples with the highest cellulose content as a fine filler and two types of mixed hydraulic binder (cement with finely ground granulated blast furnace slag and natural limestone) on commonly used substrates, such as brick and aerated concrete blocks, was also investigated. The adhesive strength testing of these hardened fiber-cement plaster mortars on both substrates revealed lime-cement mortar to be more suitable for fine plaster. The different behavior of fiber-cement containing finely ground slag manifested in a greater depth of the plaster layer failure, crack formation, and in greater damage to the cohesion between the substrate and mortar for the observed time.

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Enhancing self‐healing in bio‐mineralized concrete with steel slag aggregates and Bacillus subtilis

Ahmad,

Shabbir,

Raza

et al. 2024

Structural Concrete

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This study investigates the impact of incorporating steel slag aggregates (SSAs) into bio‐mineralized concrete to enhance its SH properties. Bacillus subtilis vegetative cells are integrated to improve the concrete's healing efficacy. The effects of microbes were evaluated through damage healing measurements and the restoration of compressive strength (COS) over different durations. Characterization techniques, including x‐ray fluorescence, x‐ray diffraction (XRD), energy‐dispersive spectroscopy (EDS), and field‐emission scanning electron microscopy (FE‐SEM), were used to analyze the SH process in concrete using carbonated SSA as carrier media. The results demonstrated that SSA serves as an effective carrier for microbial proliferation, significantly improving damage‐healing performance. The immobilization of microbes (107 cells/mL) via SSA showed the highest fracture healing efficiency of 1.023 mm. The inclusion of microbes (107 cells/mL) in SSA aggregate concrete resulted in notable COS restoration after pre‐damage by 32.29%, 31.53%, and 18.97% at 3, 7, and 28 days, respectively. FE‐SEM, XRD, and EDS spot analysis identified calcite as SH precipitates, crucial for enhancing self‐healed concrete performance. The cost of microbial concrete is 115.25% higher than traditional concrete due to the additional expense of calcium lactate and microbial culture, but its SH properties can prevent early damage, extend the life of structures, reduce repair costs, and mitigate carbon emissions.

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Lightweight Concrete: An Alternative for Recycling Cellulose Pulp

Cited by 10 publications

References 5 publications

Force‐Deformation Study on Glass Fiber Reinforced Concrete Slab Incorporating Waste Paper

Force‐Deformation Study on Glass Fiber Reinforced Concrete Slab Incorporating Waste Paper

Recycled Cellulose Fiber Reinforced Plaster

Enhancing self‐healing in bio‐mineralized concrete with steel slag aggregates and Bacillus subtilis

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