This Japanese Industrial Sandard specifies the recycled aggregate for concrete-class H (hereafter referred to as "recycled aggregate H") manufactured by giving high level treatment such as crushing, grinding and classification to the concrete lumps generated as a result, for example, of pulling down a building.
NOTE : Concrete lumps are generated not only by pulling down buildings but also by hardening the concrete which returned from concrete products and ready mixed concrete.
JIS A 5021:2011 Referenced Document
JIS A 0203 Concrete terminology*， 2019-05-25 Update
JIS A 1102 Method of test for sieve analysis of aggregates*， 2014-02-25 Update
JIS A 1103 Method of test for amount of material passing test sieve 75 mum in aggregates*， 2014-02-25 Update
JIS A 1104 Methods of test for bulk density of aggregates and solid content in aggregates*， 2019-03-25 Update
JIS A 1109 Methods of test for density and water absorption of fine aggregates
JIS A 1110 Methods of test for density and water absorption of coarse aggregates
JIS A 1121 Method of test for resistance to abrasion of coarse aggregate by use of the Los Angeles machine*， 2022-12-25 Update
JIS A 1145 Method of test for alkali-silica reactivity of aggregates by chemical method*， 2017-03-25 Update
JIS A 1146 Method of test for alkali-silica reactivity of aggregates by mortar-bar method*， 2017-03-25 Update
JIS A 1804 Methods of test for production control of concrete -- Method of rapid test for identification of alkali-silica reactivity of aggregate
JIS A 5002 Lightweight aggregates for structural concrete
JIS K 8575 Calcium hydroxide (Reagent)*， 2018-02-20 Update
JIS K 8576 Sodium hydroxide (Reagent)*， 2019-02-20 Update