Comparison of compressive and splitting tensile strength of autoclaved aerated concrete (AAC) containing water hyacinth and polypropylene fibre subjected to elevated temperatures

In this study, the effects of fiber types on the mechanical properties of lightweight aggregate concretes were investigated. Three types of fibers, namely, polypropylene fiber, steel fiber and water hyacinth (Eichhornia crassipes) fiber, and two types of lightweight aggregates, namely, expanded polystyrene and ceramsite were used. The compressive strength and splitting tensile strength of concretes were tested. The results show that both the compressive strength and the splitting tensile strength were improved by adding a reasonable volume of steel fiber and polypropylene fiber into LWAC. The addition of water hyacinth fiber had little effect on the compressive strength of LWAC, while a little increase was observed in the splitting tensile strength.

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Contribution of Polypropylene Fibre in Improving Strength of Foamed Concrete

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.626.762 ◽

2012 ◽

Vol 626 ◽

pp. 762-768 ◽

Cited By ~ 7

Author(s):

Josef Hadipramana ◽

Abdul Aziz Abdul Samad ◽

Ahmad Mujahid Ahmad Zaidi ◽

Noridah Mohammad ◽

Noorwirdawati Ali

Keyword(s):

Tensile Strength ◽

Mechanical Test ◽

Polypropylene Fibre ◽

Splitting Tensile Strength ◽

Interfacial Bonding ◽

Normal Concrete ◽

Conventional Concrete ◽

Wide Range ◽

Strength Behavior ◽

Foamed Concrete

Foamed concrete as favorable substitution conventional concrete can be used in wide range of constructions. Usage the Polypropylene Fibre (denoted as PF) in this investigation examined contribution of PF on strength of foamed concrete. Mechanical test were performed to measure effect of PF on improving compressive and splitting tensile strength. Results indicate that PF significantly improving compressive and splitting tensile strength. Behavior of PF where drawn into foamed concrete similarly with normal concrete. The fibrillation and interfacial bonding between PF and matrix has been occurred and reduced the micro crack of matrix and prevented propagation crack growth. However influence of porous of foamed concrete is considered. Process of curing continuation 60 and 90 days indicate that interfacial adhesion is wider when cement hydration process is running. Scanning Electron Microscope (SEM) exhibits condition microstructure of foamed concrete added by PF alter the microstructure, especially interfacial bonding between PF and matrix.

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Effect of Steel Fibers and Temperature on the Mechanical Properties of Reactive Powder Concrete

Civil and Environmental Engineering ◽

10.2478/cee-2021-0028 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Mahmoud Ahmed Ali Abdelrahim ◽

Aboelwafa Elthakeb ◽

Usama Mohamed ◽

Mohamed Taha Noaman

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Compressive Strength ◽

Elevated Temperatures ◽

Fine Sand ◽

Splitting Tensile Strength ◽

Steel Fibers ◽

Reactive Powder Concrete ◽

Strain Relationship ◽

Reactive Powder

Abstract Reactive Powder Concrete (RPC) is a concrete of the modern generation it mainly contains a high percentage of cement and a small percentage of water For cement as well as the presence of fine sand, ground quartz and silica dust. This research aims Studying the behavior and mechanical characteristics of RPC exposed to elevated temperatures. The key variables in this study are steel fibers content and the high temperatures of different levels 25, 200, 300, 400 ºC. Mechanical properties of concrete behavior including compressive strength, splitting tensile strength, stress-strain relationship (modulus of elasticity), and flexural strength. The test findings indicated that the Output strength of RPC specimens decreased when the high temperature increases. At a temperature of 400 °C, all samples lost the compressive strength and splitting tensile strength.

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Improvement of Mechanical Properties in Polypropylene- and Glass-Fibre-Reinforced Peach Shell Lightweight Concrete

Advances in Materials Science and Engineering ◽

10.1155/2018/6250941 ◽

2018 ◽

Vol 2018 ◽

pp. 1-11 ◽

Cited By ~ 5

Author(s):

Fan Wu ◽

Changwu Liu ◽

Zhaofeng Diao ◽

Bo Feng ◽

Wei Sun ◽

...

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Compressive Strength ◽

Flexural Strength ◽

Water Absorption ◽

Glass Fibre ◽

Lightweight Concrete ◽

Polypropylene Fibre ◽

Splitting Tensile Strength ◽

Volume Fractions

The use of the polypropylene fibre and glass fibre with different volume fractions to improve the mechanical properties of peach shell lightweight concrete was investigated in this study. The volume fractions of 0.25%, 0.50%, and 0.75% were used for each fibre. The results showed that, as the polypropylene fibre and glass fibre were added into peach shell concrete, the density was reduced by up to 6.1% and the compressive strength, splitting tensile strength, and flexural strength were increased by 19.1%, 54.3%, and 38.6%, respectively. The highest compressive strength, splitting tensile strength, and flexural strength of 29.3 MPa, 2.87 MPa, and 3.09 MPa, respectively, were produced by peach shell concrete with 0.75% glass fibre. The results indicated that the incorporation of fibres significantly enhanced the postfailure toughness of peach shell concrete. It was found that the glass fibre was more effective than the polypropylene fibre in improving the mechanical properties of peach shell concrete. Although the incorporation of fibres slightly increased the water absorption and porosity, the type and content of fibres had no significant effect on water absorption and porosity. Therefore, the mechanical properties of peach shell lightweight concrete can be improved by adding polypropylene fibres and glass fibres.

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Effect of multi-scale polypropylene fiber hybridization on mechanical properties and microstructure of concrete at elevated temperatures

Advances in Structural Engineering ◽

10.1177/1369433220988626 ◽

2021 ◽

pp. 136943322098862

Author(s):

Ninghui Liang ◽

Xiufei You ◽

Guojun Cao ◽

Xinrong Liu ◽

Zuliang Zhong

Keyword(s):

Tensile Strength ◽

Reinforced Concrete ◽

Elevated Temperatures ◽

Polypropylene Fiber ◽

Plain Concrete ◽

Splitting Tensile Strength ◽

Fiber Reinforced Concrete ◽

Fiber Reinforced ◽

Multi Scale ◽

Polypropylene Fiber Reinforced Concrete

This paper presents results of an experimental study on the compressive and splitting tensile strength of plain concretes and concretes incorporated with macro, micro and hybrid polypropylene (PP) fibers at elevated temperatures (20 °C, 200 °C, 400 °C, 600 °C, and 800 °C). Nine series of concrete mixtures with different contents PP fibers were prepared and the optimum mixing proportion of different sizes of PP fibers was discussed. The results indicated that the multi-scale polypropylene fiber reinforced concrete (dropped with three different sizes of PP fibers into concrete) had the best positive hybrid effect on resisting to high temperature, when the total PP fiber content was 6 kg/m3 and the macro PP fiber substitution was 80%. Meanwhile, the addition of macro PP fibers significantly enhanced the toughness of concrete. Compared with the value of plain concrete, the compressive and splitting tensile strength of the optimal multi-scale polypropylene fiber reinforced concrete at 800 °C increased 14% and 36% respectively.

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