Use of steel fibres recovered from waste tyres as reinforcement in concrete: Pull-out behaviour, compressive and flexural strength

The work deals with the use of waste glass to the polymer anchor material based on epoxy resin, primarily for anchoring to a high strength concrete (HSC). The main aim was to use the largest possible amount of the waste packaging glass by reducing the amount of epoxy resin, which is an expensive material and its production has a negative impact on the environment. Within the experimental verification, the influence of waste packaging glass fraction 0–0.63 mm on the final properties of the polymer anchoring material was observed. To determine the optimal formulation compressive strength, flexural strength, chemical resistance, shrinkage and pull-out test were performed. Based on the evaluation of the results the optimal percentage of filling was determined, when the polymer anchor material showed high strengths, minimal shrinkage, good chemical resistance, optimal consistency for anchoring into the HSC and high anchor bolt pull-out strength.

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Microstructures and Mechanical Properties of B4C-TiB2 Composite Prepared by Hot Pressure Sintering

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.434-435.50 ◽

2010 ◽

Vol 434-435 ◽

pp. 50-53 ◽

Cited By ~ 8

Author(s):

Xin Yan Yue ◽

Shu Mao Zhao ◽

Liang Yu ◽

Hong Qiang Ru

Keyword(s):

Mechanical Properties ◽

Fracture Toughness ◽

Flexural Strength ◽

Relative Density ◽

Microstructural Analysis ◽

Crack Deflection ◽

Second Phase ◽

Fine Grain ◽

Pull Out ◽

Microstructures And Mechanical Properties

B4C-TiB2 composite was prepared using hot pressure sintering. The microstructures and mechanical properties of the B4C-TiB2 composite were investigated. The B4C-TiB2 composite with 43 mass % TiB2 showed the optimized properties. The relative density, hardness, flexural strength and fracture toughness of that were 98.2 %, 25.9 GPa, 458 MPa and 8.7 MPa•m1/2, respectively. A number of toughening mechanisms, including fine grain, crack deflection and grain pull-out, were observed during microstructural analysis of the composite. The fracture mode of the B4C-TiB2 composite was greatly affected by the existence of the second phase of TiB2.

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Numerical modelling of the pull-out of hooked steel fibres from high-strength cementitious matrix, supplemented by experimental results

Construction and Building Materials ◽

10.1016/j.conbuildmat.2010.06.007 ◽

2010 ◽

Vol 24 (12) ◽

pp. 2489-2506 ◽

Cited By ~ 22

Author(s):

Kyriaki Georgiadi-Stefanidi ◽

Euripidis Mistakidis ◽

Dafni Pantousa ◽

Michalis Zygomalas

Keyword(s):

Numerical Modelling ◽

High Strength ◽

Experimental Results ◽

Steel Fibres ◽

Cementitious Matrix ◽

Pull Out

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Comparison of some Fresh and Hardened Properties of Self-Consolidating Concrete Composites Containing Rubber and Steel Fibers Recovered from Waste Tires

Nano Hybrids and Composites ◽

10.4028/www.scientific.net/nhc.24.8 ◽

2019 ◽

Vol 24 ◽

pp. 8-13 ◽

Cited By ~ 1

Author(s):

Hamza Bensaci ◽

Belkacem Menadi ◽

Said Kenai

Keyword(s):

Flexural Strength ◽

Volume Fraction ◽

Flow Time ◽

Steel Fibers ◽

Self Consolidating Concrete ◽

Steel Fibres ◽

Waste Tires ◽

Slump Flow ◽

Funnel Flow ◽

Recycled Steel

This paper reports on an experimental investigation using either rubber aggregates or steel fibres recycled from waste tires in the production of self-consolidating concrete composite (SCCC). Ten mixes are designed, one of them is the reference concrete. The natural aggregates are substituted by rubber particles by volume at 5, 10, 15, 20 and 30%. Recycled steel fibres are separately added to SCC mixes at volume fraction of 0.5, 0.8, 1 and 1.5%. The tested rheological properties of SCCC are slump flow diameter, T500 slump flow time, V-funnel flow time, L-box ratio, and the segregation resistance test. The compressive strength, the flexural strength, and total shrinkage are also measured on the 28 days. The experimental results show that the addition of recycled steel fibre is favorable for the SCC by means of increasing the flexural strength and reducing the shrinkage and the risk of cracking. Keywords: Self-consolidating concrete composite; Waste tires; Rubber; Steel fibers; Rheology, Strength

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FLEXURAL PROPERTIES OF INJECTION-MOLDED BAMBOO/PBS COMPOSITES

International Journal of Modern Physics B ◽

10.1142/s0217979210065726 ◽

2010 ◽

Vol 24 (15n16) ◽

pp. 2838-2843 ◽

Cited By ~ 4

Author(s):

KAZUYA OHKITA ◽

HITOSHI TAKAGI

Keyword(s):

Flexural Strength ◽

Natural Fiber ◽

Flexural Modulus ◽

Fiber Surface ◽

Flexural Properties ◽

Pull Out ◽

Polybutylene Succinate ◽

Injection Molded ◽

Bamboo Powder ◽

Opposite Tendency

In recent years, from an environmental perspective, there has been increasing interest in the change to a sustainable society. The use of natural-fiber-reinforced biodegradable composites has been proposed as one solution. Bamboo is an often used renewable bio-resource; it has an inherent advantage of rapid growth. Polybutylene succinate ( PBS ), used as matrix resin, has biodegradable characteristics. This paper describes flexural properties of bamboo/ PBS composites prepared by injection molding. The following results were obtained. The flexural modulus was improved with increasing bamboo powder contents when the cylinder temperature of the injection molder was 140°C. However, the flexural strength showed the opposite tendency to be decreased with increasing bamboo powder contents. An SEM photomicrograph of the fracture surface for bamboo/ PBS composites showed typical fracture behavior of pull-out fibers without fiber fracture. Furthermore, there was no adhesion of PBS resin on the bamboo fiber surface. Processing conditions affected mechanical properties of bamboo/ PBS composites, imparting higher flexural strength and flexural modulus at high cylinder temperatures such as 180°C and 200°C.

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