JG/T 562-2018 Precast concrete stair

JG 3002.1-1992 Residential stairway precast concrete step glide JG 3002.2-1992 Residential stairway with prefabricated concrete intermediate platform

GB 175-1999 Portland cement and ordinary Portland cement GB 175-2007 Common portland cement GB 175-2023 Common portland cement GB/T 1499.2-2007 Steel for the reinforcement of concrete—Part 2:Hot rolled ribbed bars GB/T 1499.2-2018 Steel for the reinforcement of concrete—Part 2:Hot rolled ribbed bars GB 1499.2-2024 Steel for the reinforcement of concrete—Part 2:Hot rolled ribbed bars 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/T 17431.1-1998 Lightweight aggregates and its test methods—Part 1:Lightweight aggregates GB/T 17431.1-2010 Lightweight aggregates and its test methods—Part 1:Lightweight aggregates 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 JC/T 209-2012 Expanded Perlite JC 209-1992 Expanded Perlite GB 50010-2010 Code for design of concrete structures GB 50119-2013 Code for concrete admixture application JGJ/T 152-2008 Technical specification for test of reinforcing steel bar in 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/T 50152-2012 Standard for test method of concrete structures GB/T 51231-2016 Technical standard for assembled buildings with concrete structure JGJ 1-2014 Technical specification for precast concrete structures JGJ 52-2006 Standard for technical requirements and test method of sand and crushed stone (or gravel) for ordinary concrete JGJ/T 53-2011 Technical specification for repairing water seepage of building JGJ 55-2011 Specification for mix proportion design of ordinary concrete JGJ 63-2006 Standard of water for concrete JGJ/T 152-2019 Concrete Reinforcement Detection Technology Standard (with Explanatory Notes)