This Part specifies the technical requirements,inspection methods,inspection rules,marking,storage and transportation of concrete blocks for low vibration track (hereinafter referred to as theblocks).This Part is applicable to the blocks for low vibration...[继续阅读]

    4. 1 The outline dimensions of blocks shall be inspected with both special and general measuringtools,and the appearance quality shall be visually inspected and measured with tools.4. 2 The performance test of cement,admixture,coarse and fine aggregate,wa...[继续阅读]

    3.2. 1 Portland cement or ordinary Portland cement with a strength grade not lower than 42.5 shallbe used,and early-strength cement shall not be used. The Alkali content of cement shall not begreater than 0. 60%,the sulfur trioxide content shall not be gr...[继续阅读]

    5.1 The inspections of the blocks include routine test and type test.5.2 The routine test of blocks shall be conducted in batches. Every 2 000 blocks manufactured by thesame shift,with the same materials and the same processes shall be taken as a batch. I...[继续阅读]

    The following referenced documents are indispensable for the application of this document. Fordated references,only the edition cited applies. For undated references,the latest edition of thereferenced document (including any amendments) applies.GB 1499. ...[继续阅读]

    3. 1. 1 The blocks shall be manufactured according to the design drawings and this standard.3.1.2 The blocks shall be manufactured in the factory which shall have the necessary toolingequipment and mature production processes....[继续阅读]

    3.4.1 The outline dimensions and appearance quality of blocks shall comply with Table 1.Table 1 Outline Dimensional Tolerance and Appearance Quality Requirements of BlocksS/NInspection itemClassRequirementsInspection quantityRoutine test(each batch)Type t...[继续阅读]

    3.3.1 The steel bar processing shall comply with the following requirements:a) Oil stain,paint dirt,cement paste,rust,etc.,shall be removed from the steel bar surface.b) Steel bar processing shall be conducted at normal temperature in such a way that its ...[继续阅读]

    7.1 The blocks shall be classified and stored according to the model and batch respectively,and thestorage site shall be solid and flat.7. 2 During storage and transportation,the blocks shall be placed with the rail seat surface facing upand staggered bet...[继续阅读]

    6.1 The type,steel mould number,manufacturer name and year of manufacture shall be stamped onthe top surface of the blocks according to the design drawings.6.2 Each batch of blocks shall be provided with a quality certificate,which shall include the follo...[继续阅读]