ISO 18319-2015 pdf free download

ISO 18319-2015 pdf free download.Fibre-reinforced polymer (FRP) reinforcement for concrete structures — Specifications of FRP sheets
Polyinère renforce par des fibres (PRF) pour I’armature du béton — Specifications desfeuilles en PRF.
5 Mechanical properties
5.1 General
The mechanical properties o FRP sheet shai be expressea nytne characteristic vaiues ot tensile strengtn, Young’s modulus, and ultimate strain. The tests shall be conducted in accordance with Clause 6.
5.2 Characteristic value of tensile strength
Characteristic value of tensile strength shall be determined by subtracting three times the standard deviation from the mean strength. The definitions of the standard deviation and mean strength are provided in ISO 10406-2.
5.3 Characteristic value of Young’s modulus
Characteristic value of Young’s modulus shall be the mean value, the definition of which is provided in ISO 10406-2.
5.4 Characteristic value of ultimate strain
Characteristic value of ultimate strain shall be determined by the characteristic value of tensile strength divided by the characteristic value of Young’s modulus.
6 Appearance and dimensions
6.1 Appearance
The dry sheet shall have a smooth surface without folds and/or remarkable waves by visual inspection. There shall be no remarkable breakage of fibres through whole bundles.
6.2 Dimensions
6.2.1 Length and width
The length and width of the dry sheet shall be agreed upon between interested parties.
7 Sampling test
7.1 Sampling
The number of test pieces for initial testing shall be no fewer than 20. The number of test pieces for periodic inspection shall be no fewer than five.
7.2 Appearance
Defects and their distribution shall be evaluated by inspecting the dry sheet illuminated by daylight or by a daylight-type fluorescent lamp with a colour temperature of 6 500 K ± 650 K and a power rating of not less than 40 W.
7.3 Dimensions
7.3.1 Conditions of measurement
Measurements of dimensions shall be made at room temperature, except that, in cases of dispute. measurements shall be made under standard conditions, as specified in ISO 291. The temperature of 27 °C ± 2 °C and the humidity of 65 % ± 5 % is also applicable for warm countries. For measurements made in ambient conditions, due allowance shall be made to dimensional changes with consideration of the differences in temperature and relative humidity at different test locations.
7.3.2 Width
The width shall be measured with a precision of I mm.
7.4 Tensile test
The tensile test shall be conducted in accordance with ISO 10406-2.ISO 18319-2015 pdf free download.