| 摘要 |
A precast concrete component material mixture and method of precasting, which is used to manufacture sleepers for transportation tracks, and related precast concrete components, are provided. The precast concrete component material mixture include: 891 to 963 kg/m3 of coarse aggregate(ca); 811 to 876 kg/m3 of fine aggregate(fa); pozzolan material containing 90 to 97 kg/m3 of fly ash and 31 to 34 kg/m3 of silica fume; cementing material containing 235 to 350 kg/m3 of cement and 78 to 117 kg/m3 of blast furnace slag; 122 to 165 kg/m3 of water; carboxylic acid superplasticizer, which is 0.7 to 2.0 wt % of the total usage of the pozzolan and cementing material; and steel fiber accounting for 0.5 to 1.0% of the total volume.
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