中华人民共和国电力行业标准

作者简介

《中华人民共和国电力行业标准(DL/T 5055-2007):水工混凝土掺用粉煤灰技术规范(英文版)》包括了Scope、Normative References、Terms and Definitions、General、Technical Requirements for Fly Ash等。

书籍目录

Foreword1 Scope2 Normative References3 Terms and Definitions4 General5 Technical Requirements for Fly Ash5.1 Classification and Technical Requirements5.2 Test Methods5.3 Marking5.4 Test and Acceptance5.5 Storage6 Technical Requirements for Fly Ash Used in HydraulicConcrete7 Quality Control and Inspection of Fly Ash ConcreteAppendix A （Normative Appendix）Test Method for FinenessAppendix B （Normative Appendix）Test Method for Water Demand RatioAppendix C （Normative Appendix）Test Method for Water ContentAppendix D （Normative Appendix）Test Method for the Soundness

编辑推荐

《中华人民共和国电力行业标准(DL/T 5055-2007):水工混凝土掺用粉煤灰技术规范(英文版)》由中国电力出版社出版。

章节摘录

版权页：插图：5.4.1  The fly ash delivered on site shall be sampled and tested bybatch. Every 200t of fly ash of the same grade and class supplied continuously shall be regarded as one batch. If it is less than 200t, it shall be regarded as one batch.5.4.2 Sampling method shall accord with GB 12573. The samplesshall be representative and be taken from more than ten differentpositions. For the fly ash in bags, samples with equal mass shall betaken from more than ten bags. For the fly ash in bulk, samples withequal mass shall be taken from three containers （tank） at least andfrom different depths of each container （tank）. After samples are mixed uniformly, take the fly ash which is twice the mass of the test amount as the test sample by quartering method.5.4.3  The fly ash samples taken at the construction site shall be preserved and sealed for three months. If disputes arise, the preserved samples shall be retested, or examined in arbitration test.5.4.4  For Class F fly ash, fineness, water demand ratio, loss onignition and water content shallbe tested for each batch. Sulfurtrioxide and free calcium oxide contents may be tested once for each 5-7 batches. For Class C fly ash, fineness, water demand ratio, loss on ignition, water content, free calcium oxide and soundness shall be tested for each batch, and sulfur trioxide content may be tested once for each 5-7 batches.

图书封面

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