PRCindustrystandardsforPCCpile_2011-4-26_page17-40.doc

PRCindustrystandardsforPCCpile_2011-4-26_page17-40.doc

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5 Inspection and Acceptance 5.1 Piles check 5.1.1 PCC Pile quality inspection should include drilling, concrete mixing and perfusion inspection process,nd fill in the following provisions should be the quality of inspection records: 1 Concrete mixing should measure quality of raw materials, concrete mix, slump, concrete strength inspection; 2 Immersed tube should be checked before setting out piles bit error; 3 Immersed immersed tube should be checked before the vertical,Immersed tube should be checked before the final hole last 30s of the current, voltage; 4 Before the pouring of concrete Response to vertical hole, hole depth, hole bottom mud to inspect; 5 Should check the amount of concrete pouring and filling factor、pile top elevation and speed of vibration。 5.1.2 PCC pile top elevation, pile length, pile position, vertical deviation, coefficient of concrete filling, concrete strength, speed, extubation should check the provisions of Table, and Appendix B of this Regulation shall be the requirements of Table B good records. Table 5.1.2 PCC Pile quality inspection standard Preface Inspection Items Allow the value of tolerance Inspection methods 1 Pile length +300mm 0mm Test pile length, check construction records 2 Concrete strength Design requirements Specimen sample inspection report, or cut 3 Concrete filling coefficient ≥1.1 Check each pile recorded the actual perfusion 4 Pile ±200mm Check after excavation measuring tape 5 Vertical 1% Theodolite or line pipe vertical pile hammer test 6 Pile top elevation +30mm -50mm Level examination, will be deducted top of the pile layer and the poor quality pulp floating pile 7 Extubation rate Soft soil 0.8m/min 0.6m/min Increase in distance and time measurement head Other soil 1.2m/min 1.0 m/min 5.1.3 Each class should be retained for each group of concrete block not less than 3。 5.2Quality pile testing 5.2.1 Should be excavated in the pile after pile core soil 14d,Observed pile wall molding quality

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