Cements, Cement and concrete technology, Reinforced materials, Glass fibres, Concretes, Precast concrete, Reinforced concrete, Prefabricated parts, Reinforcing materials, Composite materials, Bend testing, Deflection tests, Mechanical testing ; Approval testing ; Homogeneity ; Test equipment ; Test specimens ; Specimen preparation ; Testing conditions ; Reports Defines a test procedure ; applying to glass-fibre reinforced cement ; for verification of the conformity to the bending strength specification ; for evaluation of the uniformity of the production process and for checking the homogeneity of the compaction.