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Table 8 Results of 2nd series of four-point bending experiments concerning the reference beams

From: Investigating the flexural strength of recycled cast glass

2nd four-point bending experiment: reference beams \(30\times 30\times 240\) mm, 100/200 mm supports

Glass type

Specimen description

No. of tested specimens

Flexural strength (MPa)

Average flexural strength (MPa)

Average E modulus (GPa), LVDT calculation\(^\mathrm{a}\)

Minimum

Maximum

Soda lime silica

Float 10 mm, 3 horizontal layers glued with Delo 4468

2

44

52.5

48.3

49.7

Soda lime potash borosilicate

Poesia standard cast glass brick, cut & polished

3

42.9

59.3

50.4

59

  1. \(^\mathrm{a}\)The LVDT calculation results in a lower than expected Young’s modulus by approximately 15%, due to sensor errors. The provided Young’s modulus data are only for comparison between the different glass types