Performance of Porous Slabs Using Recycled Ash

El-Sayed, Taha A.

doi:10.3390/polym13193319

Cited by 11 publications

(3 citation statements)

References 42 publications

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“…Kaushik et al [18] executed a study on ferrocement RC columns and realized that the ferrocement enhanced the strength and ductility of the columns for centric and eccentric compressive loads. Similarly, various studies have been undertaken on different ferrocement structural elements under centric and eccentric compressive loads [19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Axial Compression Behavior of Ferrocement Geopolymer HSC Columns

El-Sayed

2021

Polymers

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Geopolymer concrete (GC) is a substantial sort that is created by utilizing metakaolin, ground granulated blast furnace slag (GGBS), silica fumes, fly ash, and other cementitious materials as binding ingredients. The current study concentrated on the structural behavior of the ferrocement geopolymer HSC-columns subjected to axial loading and produced using rice straw ash (RSA). The major goal of this research was to use the unique features of the ferrocement idea to manufacture members that function as columns bearing members. As they are more cost-effective and lower in weight, these designed elements can replace traditional RC members. The study also intended to reduce the cost of producing new parts by utilizing low-cost materials such as light weight expanded and welded wire meshes, polyethylene mesh (Tensar), and fiber glass mesh. For this purpose, an experimental plan was conducted and a finite element prototype with ANSYS2019-R1 was implemented. Nine geopolymer ferrocement columns of dimensions of 150 mm × 150 mm × 1600 mm with different volume-fraction and layers as well as a number of metallic and nonmetallic meshes were examined under axial compression loading until failure. The performance of the geopolymer columns was examined with consideration to the mid-span deflection, ultimate failure load, first crack load with various phases of loading, the cracking patterns, energy absorption and ductility index. Expanded or welded ferrocement geopolymer columns showed greater ultimate failure loads than the control column. Additionally, using expanded or welded columns had a considerable effect on ultimate failure loads, where the welded wire mesh exhibited almost 28.10% compared with the expanded wire mesh. Columns reinforced with one-layer of nonmetallic Tensar-mesh obtained a higher ultimate failure load than all tested columns without concrete cover spalling. The analytical and experimental results were in good agreement. The results displayed an accepted performance of the ferrocement geopolymer HSC-columns.

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Section: Introductionmentioning

confidence: 99%

Axial Compression Behavior of Ferrocement Geopolymer HSC Columns

El-Sayed

2021

Polymers

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“…5 A huge amount (772 metric tons) of wheat is grown around the globe, which produces a large sum of waste, polluting the environment. Wheat straw ash (WSA) is made from farming waste and because [6][7][8] it has binding attributes it could be efficiently utilized in concrete to replace cement, which can help the environment and improve the economy of any country. 9 WSA has pozzolanic behavior and enhances the resistance against corrosion, and significantly improves the workability and strength of concrete.…”

Section: Introductionmentioning

confidence: 99%

Retraction: To evaluate the performance of waste marble powder and wheat straw ash in steel fiber reinforced concrete

Zaid

Aslam

Alabduljabbar

2021

Structural Concrete

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In developing countries, cement is one of the most consumed materials, which leads to a huge quantity of emission of carbon dioxide (CO 2 ) gas into the atmosphere. Cement could be replaced with materials that have pozzolanic properties and filler ability such as wheat straw ash (WSA). The focus of the present research is to substitute cement with WSA and fine aggregate with waste marble powder (WMP) in different doses ranging from 0% to 20% and 0% to 30% with 1.5% hooked end steel fibers in concrete. To evaluate different characteristics of concrete made with WSA, WMP and steel fibers, tests such as compressive, split tensile and flexural strength, sorptivity, water absorption and microstructural analysis were performed, From the lab results, it was revealed that the optimum dosage for concrete with improved properties was 15% WSA, 30% WMP, and 1.5% steel fibers. An improvement of 43.5%, 59%, and 45.96% was observed in compressive, split tensile, and flexural strength. Water absorption and sorptivity were reduced by 15.9% and 29% with the addition of WSA

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“…Moreover, with a lower water content, there is less excess water to create voids in the concrete. This reduced porosity limits the potential pathways for crack formation, increasing the overall strength of the concrete [53,54]. Additionally, lower w/c ratios often require more efficient curing techniques to prevent the concrete from drying out too quickly.…”

Section: Influence On Compressive Strengthmentioning

confidence: 99%

Influence on Physical and Mechanical Properties of Concrete Using Crushed Hazelnut Shell

Gálvez Cartagena,

Muñoz Araya,

Yanez

et al. 2023

Applied Sciences

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Concrete production requires a significant amount of natural resources, with aggregates comprising between 55% and 80% of the total volume. However, the over-exploitation of natural aggregates has led to the exploration of alternative materials for use in concrete production. In this study, crushed hazelnut shells were investigated as a partial replacement for fine aggregate, addressing the problem of natural resource depletion and offering a second use for this important agricultural waste product available in Chile. Hazelnut shells were incorporated in percentages of 2.5%, 5%, and 10% by weight of sand for water/cement ratios of 0.4 and 0.5. The compressive strength at 7 and 28 days and bending strength at 28 days were determined, alongside physical properties such as the workability, temperature, air content, fresh density, and hardened density of the concrete. Our findings showed that replacing 2.5% of the fine aggregate with hazelnut shells led to a higher compressive strength at 28 days, exceeding the strength of the standard specimens by 9.5%, whereas replacing 5% of the fine aggregate led to the highest bending strength, exceeding the strength of the standard specimens by 3.5%. Moreover, the 0.4 w/c ratio consistently led to better results for both compressive and bending strength, with fewer and lower reductions in mechanical strength compared to the standard mixture. Our results suggest that concrete mixes with hazelnut shells as a replacement for fine aggregate at a percentage of up to 2.5% can be used in construction systems with a compression strength lower than 17 MPa, and mixtures with up to 10% hazelnut shell replacement can be used in structures with tensile bending stress requirements lower than 6 MPa. Overall, the use of hazelnut shells as a partial replacement for fine aggregate in concrete production presents an environmentally friendly and cost-effective solution for the construction industry.

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Performance of Porous Slabs Using Recycled Ash

Cited by 11 publications

References 42 publications

Axial Compression Behavior of Ferrocement Geopolymer HSC Columns

Axial Compression Behavior of Ferrocement Geopolymer HSC Columns

Retraction: To evaluate the performance of waste marble powder and wheat straw ash in steel fiber reinforced concrete

Influence on Physical and Mechanical Properties of Concrete Using Crushed Hazelnut Shell

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