2. Prism compressive strength f cp The compressive strength of 150×150×300mm prism, cured in standard condition, 28 days. The relation of prism compressive strength and compressive strength is f cp =0.7 ～ 0.8f cu §4.4.5 Other strength

3. Tensile strength is tested through split tensile testTensile strength is tested through split tensile test Split tensile test strength experiment is shown in the videoSplit tensile test strength experiment is shown in the video Tensile strength

4. PrinciplePrinciple –Fig. 4.4.6 is the ketch map of split tensile test. – Apply linear load distributed evenly on two opposite surface, thus the tension stress will be produced on the vertical surface affected by the external force. –This force will be calculated by the elastic theory. Fig. 4.4.6 Sketch Map of Split Tensile Test

5. Split tensile test strength f t s Split tensile test strength f t s P—damage load, N A—split area of specimen, mm² Tensile strength

6. Bending strength Bending strength is tested through middle third point loading experiment test, Fig. 4.4.7 is the sketch map bending test of concrete, Specimen ： 150×150×600(550)mm beam specimen. Fig. 4.4.7 Sketch Map Bending Test of Concrete

7. Bending strength