DB31/T 894.2-2015 Recycling Sand and Powder Application Technical Regulations Part 2: Mixing Recycled Powder into Pre-mixed Concrete

DB31/T 894.1-2015 Regeneration Sand Powder Application Technology Specification Part 1: Guidelines and Classification DB31/T 894.3-2015 Technical specification for application of recycled sand powder—Part 3:Dry-mixed mortar mixed with recycled sand

GB 175-1999 Portland cement and ordinary Portland cement GB 175-2007 Common portland cement GB 175-2023 Common portland cement GB/T 176-1996 Method for chemical analysis of cement GB/T 176-2008 Methods for chemical analysis of cement GB/T 176-2017 Methods for chemical analysis of cement GB/T 1345-1991 Test method for fineness of cement—The 80μm sieve GB/T 1345-2005 The test sieving method for fineness of cement GB/T 1596-1991 Fly ash used for cement and concrete GB/T 1596-2005 Fly ash used for cement and concrete GB/T 1596-2017 Fly ash used for cement and concrete GB 6566-2001 Limit of radionuclides in building materials GB 6566-2010 Limits of radionuclides in building materials GB 8076-1997 Concrete admixtures GB 8076-2008 Concrete admixtures GB/T 9142-2000 Concrete mixers GB/T 9142-2021 Building construction machinery and equipment—Concrete mixer GB/T 10171-2005 Concrete mixing plant (tower) GB/T 10171-2016 Building construction machinery and equipment—Concrete mixing plant(tower) GB/T 14684-2001 Sand for building GB/T 14684-2011 Sand for construction GB/T 14684-2022 Sand for construction GB/T 14685-2001 Pebble and crushed stone for building GB/T 14685-2011 Pebble and crushed stone for construction GB/T 14685-2022 Pebble and crushed stone for construction GB/T 17671-1999 Method of testing cements—Determination of strength GB/T 17671-2021 Test method of cement mortar strength(ISO method) GB/T 18046-2000 Ground granulated blast furnace slag used for cement and concrete GB/T 18046-2008 Ground granulated blast furnace slag used for cement and concrete GB/T 18046-2017 Ground granulated blast furnace slag used for cement，mortar and concrete GB/T 21120-2007 Synthetic fibres for cement,cement mortar and concrete GB/T 21120-2018 Synthetic fibres for cement concrete and mortar GB/T 25177-2010 Recycled coarse aggregate for concrete GB/T 50082 JC 475-1992 Cement anti-freezing agent JC 475-2004 Cement anti-freezing agent JG/T 223-2007 Polycarboxylates high performance water-reducing admixture JG/T 223-2017 Polycarboxylates high performance water-reducing admixture JG/T 3064-1999 Steel fiber reinforced concrete GB/T 50080-2016 Standard for test method of performance on ordinary fresh concrete GB/T 50081-2019 Standard for test methods of concrete physical and mechanical properties GB/T 50107-2010 Standard for evaluation of concrete compressive strength GB 50666-2011 Code for construction of concrete structures JGJ/T 10-2011 Technical specification for construction of concrete pumping JGJ 55-2011 Specification for mix proportion design of ordinary concrete JGJ 63-2006 Standard of water for concrete JGJ/T 193-2009 Standard for inspection and assessment of concrete durability GB/T 8076-2025 Concrete admixtures GB/T 176-2025 Methods for chemical analysis of cement