T/SDGSY 3-2021 Grouted recycled aggregate from solid waste

Scope

Scope: This document specifies the terms and definitions, classification, requirements, test methods, inspection rules, and product quality certificates for ceramicized recycled aggregates, as well as their storage and transportation. This document applies to concrete and cement products, ordinary mortar aggregates, and refractory concrete; aggregates with a bulk density greater than 800 kg/m3 and not exceeding 1200 kg/m3 can also be used in garden permeable walkways; aggregates with a bulk density greater than 1200 kg/m3 can also be used in roadbed materials, oil well proppants, etc. Main technical contents: - Requirement 4.1 Particle gradation: - 4.1.1 The particle gradation of various coarse and fine aggregates shall comply with the requirements of Table 1. - Table 1: Particle gradation categories of aggregates | Particle size (mm) | Cumulative sieve residue (by mass %) | Square hole sieve aperture (mm) | | 37.5 | 31.5 | 26.5 | 19.0 | 16.0 | 9.50 | 4.75 | 1.18 | 0.6 | 0.3 | 0.15 | | Fine aggregates | — | — | — | — | — | — | 0 | 0 | 10 | 0 | 40 | 60 | 30 | 80 | 65 | 90 | 75 | 100 | | Coarse aggregates | Continuous particle size | 5 | 40 | 50 | 85 | 90 | 95 | 100 | | — | — | — | — | — | — | — | 5 | 25 | 0 | 50 | 10 | 30 | 70 | 90 | 100 | 95 | 100 | | — | — | — | — | — | — | — | 5 | 20 | 0 | 5 | 0 | 10 | 20 | 85 | 100 | 95 | 100 | | — | — | — | — | — | — | — | 5 | 16 | — | — | 0 | 85 | 100 | 90 | 100 | — | — | | Single particle size | 10 | 16 | — | — | — | — | — | - Table 3: Bulk density requirements for coarse aggregates - Table 4: Water absorption and softening coefficient requirements for coarse aggregates of different density grades - Table 5: Cylinder compression strength requirements for aggregates of different density grades - Table 6: Water absorption and softening coefficient requirements for fine aggregates

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