Term: Ready-mix concrete

Types of Concrete Mixes - Mix design depends on project requirements, strength, appearance, and local regulations. - Factors considered include cost of additives and aggregates, slump for mixing and placement, and performance. - Mix design includes cement, coarse and fine aggregates, water, and chemical admixtures, with specified mixing method and conditions. - Ingredients vary based on the application, with pre-mixed options available. - A typical concrete batch includes Portland cement, dry sand, dry stone, and water. - High-strength concrete has a compressive strength greater than 40 MPa (6000 psi). - Stamped concrete is an architectural concrete with a superior surface finish. - High-performance concrete (HPC) exceeds common application standards, not limited to strength. - Ultra-high-performance concrete (UHPC) has compressive strengths exceeding 150 MPa, possibly exceeding 250 MPa. - Micro-reinforced UHPC utilizes continuous, multi-layered, three-dimensional micro-steel mesh. - Low-density structural concrete uses ceramic aggregates with a density below that of water. - Self-consolidating concrete is cohesive and flowable without mechanical compaction. - Vacuum concrete is produced by creating a vacuum inside a concrete mixing truck using steam. - Shotcrete uses compressed air to shoot concrete onto or into a frame or structure. - Limecrete utilizes lime as a binder instead of Portland cement. - Glass concrete incorporates recycled glass as aggregate. - Asphalt concrete uses bituminous materials as the binder. - Rapid strength concrete develops high resistance within a few hours. - Rubberized concrete incorporates rubber for improved durability and flexibility. - Nanoconcrete contains Portland cement particles no greater than 100 μm. - Foam concrete is a lightweight and highly insulating material. - Air-entrained concrete incorporates tiny air bubbles for enhanced workability and durability. - Engineered cementitious composite is a bendable concrete with enhanced flexibility. - Ferrocement is a reinforced mortar or plaster system with high strength and durability. - Ready-mix concrete is manufactured in batch plants according to engineered mix design. Historic Concrete Composition - Ancient concrete, like Roman concrete, used volcanic ash and hydrated lime. - Roman concrete was superior to other recipes and they also invented hydraulic concrete. - Composition stone and artificial stone are terms used for lime-cemented concretes. - The term 'artificial stone' encompasses various human-made stones, including cemented concretes. High-Strength Concrete - High-strength concrete has a compressive strength greater than 40 MPa (6000 psi). - In the UK, high-strength concrete is defined as having a compressive strength class higher than C50/60. - Low water-cement ratio (W/C) and silica fume are used to achieve high strength. - Superplasticizers are added to compensate for reduced workability. - Careful selection of aggregate is crucial to prevent failure in high-strength concrete. Stamped Concrete and High-Performance Concrete - Stamped concrete is an architectural concrete with a superior surface finish. - High-performance concrete (HPC) exceeds common application standards, not limited to strength. - HPC can be self-consolidating and compact without segregation. - HPC exhibits early age strength, long-term mechanical properties, and low permeability. - Other properties include density, heat of hydration, toughness, volume stability, and durability in severe environments. - HPC develops a strength greater than 50 MPa (7,300 psi) at specified days and requires well-graded aggregates, cement, fly ash, water-reducing admixtures, and silica fume. Other Concrete Types - Ultra-high-performance concrete (UHPC) has compressive strengths exceeding 150 MPa, possibly exceeding 250 MPa. - Micro-reinforced UHPC utilizes continuous, multi-layered, three-dimensional micro-steel mesh. - Low-density structural concrete uses ceramic aggregates with a density below that of water. - Self-consolidating concrete is cohesive and flowable without mechanical compaction. - Vacuum concrete is produced by creating a vacuum inside a concrete mixing truck using steam. - Shotcrete uses compressed air to shoot concrete onto or into a frame or structure. - Limecrete utilizes lime as a binder instead of Portland cement. - Glass concrete incorporates recycled glass as aggregate. - Asphalt concrete uses bituminous materials as the binder. - Rapid strength concrete develops high resistance within a few hours. - Rubberized concrete incorporates rubber for improved durability and flexibility. - Nanoconcrete contains Portland cement particles no greater than 100 μm. - Foam concrete is a lightweight and highly insulating material. - Air-entrained concrete incorporates tiny air bubbles for enhanced workability and durability. - Engineered cementitious composite is a bendable concrete with enhanced flexibility. - Ferrocement is a reinforced mortar or plaster system with high strength and durability. - Ready-mix concrete is manufactured in batch plants according to engineered mix design.