標(biāo)準(zhǔn)號(hào)：DIN EN 1367-4-2008
中文標(biāo)準(zhǔn)名稱：集料熱和風(fēng)化性能試驗(yàn).第4部分:干燥收縮測定
英文標(biāo)準(zhǔn)名稱：Tests for thermal and weathering properties of aggregates - Part 4: Determination of drying shrinkage; English version of DIN EN 1367-4:2008-06
標(biāo)準(zhǔn)類型：Q13
發(fā)布日期：1999/12/31 12:00:00
實(shí)施日期：1999/12/31 12:00:00
中國標(biāo)準(zhǔn)分類號(hào)：Q13
國際標(biāo)準(zhǔn)分類號(hào)：91.100.15
引用標(biāo)準(zhǔn)：EN 197-1;EN 932-1;EN 932-2;EN 932-5;EN 933-2
適用范圍：This standard describes the reference method used for type testing and in cases of dispute, for determining theeffect of aggregates on the drying shrinkage of concrete. For other purposes, in particular factory productioncontrol, other methods may be used provided an appropriate working relationship with the reference method hasbeen established.This standard is based on the testing of concretes of fixed mix proportions and aggregates of 20 mm maximumsize.NOTE I Guidance on the use of larger size is given in Annex A. Precision data is not available for variations in size and forvariations in the water content of the test concrete.NOTE 2 In those cases where the drying shrinkage of a source of coarse aggregate only or a source of fine aggregate(sand) only are required, the other component to be used should be, respectively, a fine or coarse aggregate of known Iowshrinkage.NOTE 3 Aggregates with high water demand and/or porosity may in a concrete with a fixed water content result in a mixwith insufficient workability to allow full compaction of the test specimens. This is likely to occur with aggregates combinationshaving a composite water absorption value greater than 3,5% or oven-dried particle densities less than 2,45 Mg/m3 (e.g. forrecycled aggregates). In such instances a variation of the method (without precision data) may be carried out by one of thefollowing changes to the concrete mix: (a) use of aggregates in the saturated and surface dry condition. (b) use of water-reducing admixture.A note on the details of any modification to the mix design should be included with the test report.