Mechanical and physical properties of epoxy polymer concrete after exposure to temperatures up to 250°C

Elalaoui, Oussama; Ghorbel, Elhem; Mignot, Valérie; Ouezdou, Mongi Ben

doi:10.1016/j.conbuildmat.2011.07.027

Cited by 113 publications

(46 citation statements)

References 12 publications

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“…Regardless of their significant advantages in comparison with conventional construction materials, the mechanical properties of polymer composites are highly susceptible to the type of resin and reinforcement (or aggregate) employed, as well as to the quantity of both components [3][4][5][6] . However, the main problem with polymeric materials arises from the viscoelastic properties of the polymer, which result in creep and a high sensitivity to temperature [7][8][9][10] . The effects of temperature on the mechanical properties of polymers change considerably, especially within the heat distortion temperature range.…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature on the mechanical properties of polymer mortars

Reis

2012

Mat. Res.

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This paper presents the results of an experimental program to investigate the effect of temperature on the performance of epoxy and unsaturated polyester polymer mortars (PM). PM is a composite material in which polymeric materials are used to bond the aggregates in a fashion similar to that used in the preparation of Portland cement concrete. For this purpose, prismatic and cylindrical specimens were prepared for flexural and compressive tests, respectively, at different temperatures. Measurements of the temperature-dependent elastic modulus and the compressive and flexural strength were conducted using a thermostatic chamber attached to a universal test machine for a range of temperatures varying from room temperature to 90 °C. The flexural and compressive strength decreases as temperature increases, especially after matrix HDT. Epoxy polymer mortars are more sensitive to temperature variation than unsaturated polyester ones.

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Section: Introductionmentioning

confidence: 99%

Effect of temperature on the mechanical properties of polymer mortars

Reis

2012

Mat. Res.

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“…One of the important characteristic specific to solid materials is flexural modulus, therefore many researchers have determined this characteristic, using the three point bending test, to understand the effect different factors on the adaptable mechanical properties of composites [5]. CFRP composite can provide well-bonded structures with excellent strength and hardness after curing, but the viscoelastic properties of polymers causes the main problem of polymeric materials that results in creep and a high sensitivity to temperature [6].…”

Section: Introductionmentioning

confidence: 99%

Flexural Behavior of CFRP Laminate at Elevated Temperature

Abdalrahman¹

2017

KJAR

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A carbon fibre reinforced polymer (CFRP) laminate forms the surface part of an integrally heated tool. It was made up of carbon non-crimp triaxial fibre and SR8100 epoxy in accordance to the stacking sequence of [(0, ±45)/ (90, ±45)] S, using the resin infusion (RI) method. The laminate is heated up to 90ºC when the tool is operated; therefore understanding the effect of temperature on the flexural properties is quite significant. This experimental study is carried out to investigate the flexural behaviour of the CFRP laminate and finding its flexural properties under the effect of elevated temperatures. For this purpose, various CFRP specim-ens were prepared and tested, using three point bending test method, at different temperature levels from room temperature to 90ºC. The results show that each of the flexural peak load, modulus and strength of the laminate decreases consistently with the increase of temperature. Also the laminate becomes slightly more flexible and significant loss occurs in its flexural modulus when the temperature elevates from 75ºC to 90ºC. The reduction in the flexural behaviour of CFRP is imputed to thermal softening of the epoxy polymer matrix whenever becomes closer to (HDT).

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“…The results showed that a sudden increase in permeability due to micro structural pores formed as results of PP melting, which act as continuous channels. It is also observed that melted PP fibres fills in the micro cracks and does not percolate in the cement paste [7][8][9]. Residual strength degradation in terms of compressive and flexural properties was investigated in the experimental study with targeted high temperature range from 20 -900°C.…”

Section: Introductionmentioning

confidence: 99%

Residual Strength Characteristics of Polymer Fibre Concrete Exposed to Elevated Temperature

Thirumurugan

Sivakumar

2015

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Abstract. Mechanical properties of polymer based concrete exposed to high temperature effects are evaluated in the present study. Concrete mixtures were prepared using styrene butadiene rubber (SBR) latex and reinforced with polypropylene (PP) fibres. "Latex polymer modified concrete mixes consisting of different aggregate proportions, polymeric fibre contents (0.1 and 0.3% Vf) and fly ash contents (25 and 50%) were investigated for high temperature performance. Concrete specimens after required curing were subjected to different high temperature effects from 200°C to 800°C and the corresponding weight loss and residual strength was determined. In addition, the residual elastic modulus of polymer concretes was determined from the compressive stress-strain properties. Experimental observations showed that, compared to plain concrete the residual strength characteristics of polymer fibre concretes were affected when exposed to high temperature. Strength degradation occurred with increase in temperature and the test results indicated that the temperature sustainability of polypropylene fibre concretes were observed up to 200°C. A maximum compressive strength loss upto 56.75% for plain concrete and 9.87% for polymer fibre concrete was noticed when exposed to high temperature upto 800°C. Further, microscopic analysis of fibre concretes exposed to high temperature showed possible melting of PP fibres resulting in filling the pore spaces which possibly improved the matrix hardening. Also, the high volume fibre incorporated concrete mixes showed maximum residual strength gain due to favourable matrix strengthening and demonstrated high temperature performance of polymer concretes.

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Mechanical and physical properties of epoxy polymer concrete after exposure to temperatures up to 250°C

Cited by 113 publications

References 12 publications

Effect of temperature on the mechanical properties of polymer mortars

Effect of temperature on the mechanical properties of polymer mortars

Flexural Behavior of CFRP Laminate at Elevated Temperature

Residual Strength Characteristics of Polymer Fibre Concrete Exposed to Elevated Temperature

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