This standard specifies the terms and definitions, classification, performance grade and mark, raw materials and mix proportion, quality requirements, preparation, test methods, inspection rules, ordering and delivery of ready-mixed concrete.
This standard is applicable to ready-mixed concrete produced by mixing plant (tower).
This standard does not cover pouring, vibrating and curing of concrete after delivery.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 175 Common portland cement
GB 200 Moderate heat portland cement - Low heat portland cement - Low heat portland slag cement
GB/T 1596 Fly ash used for cement and concrete
GB 8076 Concrete admixtures
GB/T 9142 Concrete mixer
GB 10171 Concrete mixing plant (tower)
GB 13693 Road portland cement
GB/T 17431.1 Lightweight aggregates and its test methods - Part 1: Lightweight aggregates
GB/T 18046 Ground granulated blast furnace slag used for cement and concrete
GB/T 18736 Mineral admixtures for high strength and high performance concrete
GB/T 20491 Steel slag powder used for cement and concrete
GB 23439 Expansive agents for concrete
GB/T 25176 Recycled fine aggregate for concrete and mortar
GB/T 25177 Recycled coarse aggregate for concrete
GB/T 50080 Standard for test method of performance on ordinary fresh concrete
GB/T 50081 Standard for test method of mechanical properties on ordinary concrete
GB/T 50082 Standard for test methods of long-term performance and durability of ordinary concrete
GB/T 50107 Standard for evaluation of concrete compressive strength
GB 50119 Code for utility technical of concrete admixture
GB 50164-2011 Standard for quality control of concrete
GB 50204 Code for acceptance of constructional quality of concrete structures
GB/T 50557 Technical code for barite concrete against radiation
JC 475 Concrete anti-freezer
JG/T 317 Granulated electric furnace phosphorus slag powder for concrete
JG/T 315 Natural pozzolanic materials used for cement mortar and concrete
JG/T 5094 Truck mixer
JGJ 51 Technical specification for lightweight aggregate concrete
JGJ 52 Standard for technical requirements and test method of sand and crushed stone (or gravel) for ordinary concrete
JGJ 55 Specification for mix proportion design of ordinary concrete
JGJ 63 Standard of water for concrete
JGJ/T 193 Standard for inspection and assessment of concrete durability
JGJ 206 Technical code for application of sea sand concrete
JGJ/T 221 Technical specification for application of fiber reinforced concrete
JGJ/T 240 Technical specification for application of recycled aggregate
JTJ 270 Testing code of concrete for port and waterway engineering
HJ/T 412 Technical requirement for environmental labeling products - Ready-mixed concrete
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
ready-mixed concrete
concrete produced in the mixing plant (tower) and delivered to the place of use by transport equipment, which is mixture when delivered
3.2
ordinary concrete
concrete with dry apparent density of 2,000 kg/m3~2,800 kg/m3
3.3
high strength concrete
concrete with the strength grade not lower than C60
