中华人民共和国电力行业标准

出版时间：2009-1  出版社：中华人民共和国国家发展和改革委员会发布 中国电力出版社 (2009-01出版)  作者：中华人民共和国国家发展和改革委员会发布 编  页数：22  

内容概要

　　This Standard is revised according to the requirements of The Notice on Issuing the Project Plan of Industrial Standards in 2006 by the General Office of the National Development and Reform Commission （Document No.1093f20061）.

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

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.

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