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See Chinese contents: GB/T 38978-2020 GB/T 38978-2020: Refractory products--Determination of stress-strain (three-point bending method）
This Standard specifies the principle, equipment, specimens, test procedures, result calculation and test report of the determination of stress-strain of refractory products. This Standard is applicable to shaped fired refractory products, chemically bonded refractory products and unshaped refractory materials.
