Types of CONCRETE
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The document discusses different types of ready-mix concrete available from CEMEX with special properties and performance. It describes standard ready-mix concrete as the most common type, prepared off-site for quality control. It also mentions architectural concrete which provides aesthetic finishes, rapid-setting concrete for accelerated construction, and fiber-reinforced concrete which increases durability and crack resistance. Additional types discussed include fluid-fill concrete for pipe installation, roller-compacted concrete for spillways, self-consolidating concrete with high strengths, pervious concrete for drainage, and antibacterial concrete for clean environments.
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High-performance fiber-reinforced cementitious composites (HPFRCCs) are a group of fiber-reinforced cement-based composites which possess the unique ability to flex and self-strengthen before fracturing. This particular class of concrete was developed with the goal of solving the structural problems inherent with today’s typical concrete, such as its tendency to fail in a brittle manner under excessive loading and its lack of long-term durability. Because of their design and composition, HPFRCCs possess the remarkable ability to strain harden under excessive loading. In layman’s terms, this means they have the ability to flex or deform before fracturing, a behavior similar to that exhibited by most metals under tensile or bending stresses. Because of this capability, HPFRCCs are more resistant to cracking and last considerably longer than normal concrete. Another extremely desirable property of HPFRCCs is their low density. A less dense, and hence lighter material means that HPFRCCs could eventually require much less energy to produce and handle, deeming them a more economic building material. Because of HPFRCCs’ lightweight composition and ability to strain harden, it has been proposed that they could eventually become a more durable and efficient alternative to typical concrete.
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The history of cementing materials together goes back to the time when prehistoric man prepare his cave to build shelter.
He used mud and clay to fill the gap between stone. To keep out the wind and cold.
Later the Assyrians and Babylonians used clay as their bonding substance and straw to make a shape.
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The word concrete comes from the Latin word "concretus". Which means compact. Now a days concrete is most common and necessary things in our life.
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This document discusses different types of special concrete and factors that affect the durability of concrete. It describes 10 types of special concrete: 1) light weight concrete, 2) polymer modified concrete, 3) fiber reinforced concrete, 4) high performance concrete, 5) pumped concrete, 6) roller compacted concrete, 7) self-compacting concrete, 8) high density concrete, 9) ready mixed concrete, and 10) green concrete. It also discusses recycled concrete and various methods to improve the durability of concrete structures. The document provides details on the composition, properties and applications of these special concretes.
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Types of CONCRETE
- 1. Types of Ready-Mix Concrete CEMEX has a wide range of products and services, including technical support for its different types of ready-mix concrete. Below are a few examples of ready-mix concrete technologies with special properties and performance: Standard Ready-Mix Concrete Standard ready-mix concrete is the mostcommon form ofconcrete. It is prepared for delivery at a concrete plant instead ofmixed on the construction site,which guarantees the qualityof the concrete. Architectural and Decorative Concrete This type of concrete can provide a structural function, as well as an aesthetic or decorative finish.It can offer smooth or rough surfaces or textures, as well as a variety or range of colors. Rapid-setting Concrete Designed to enhance earlystrength development,this concrete allows fastformwork removal,accelerated construction sequencing,and rapid repair for such jobs as roads and airportrunways.Typically used in low temperature (5-10°C) concreting during winter,this concrete can also be used in buildings,railways,and precast applications.In addition to saving time, this concrete technologyoffers improved durabilityand acid resistance. Fiber-reinforced Concrete Concrete designed with micro or macro fibers can be used either for structural applications,where the fibers can potentiallysubstitute for steel rebar reinforcement,or for reducing shrinkage—primarilyearlyage shrinkage.Macro fibers can significantlyincrease the ductility of concrete, making ithighly resistantto crack formation and propagation. Fluid-fill Concrete Fluid mortar or concrete simplifies the process oflaying pipe and cable by surrounding the pipe or cable with a tightly packed shell thatprovides protection from the elements,prevents settling,and enables crews to work quickly. Roller-compacted Concrete
- 2. Compacted in place and cured, roller-compacted concrete is a zero slump concrete with the abrasion resistance to withstand high velocity water—making itthe material of choice for spillways and other infrastructure subjectto high flow conditions.Itrepresents a competitive solution in terms ofcostand durability when compared to asphalt. Self-consolidating Concrete (SCC) SCC has very high flow; therefore, it is self-leveling,eliminating the need for vibration. Due to the superplasiticizers used—chemical admixtures thatimpartvery high flow—SCC exhibits very high compaction as a resultof its low air content. Consequently,SCC can have very high strengths,exceeding 50 MPa. Pervious Concrete Because ofits unique design mix,pervious concrete is a highly porous material thatallows water,particularly rainwater,to filter through, reduces flooding and heatconcentration by up to 4°C, and helps to prevent skidding on wet roads.This concrete is ideallyused in parking lots,footpaths,and swimming pool border applications. Antibacterial Concrete This concrete controls bacteria growth and is used to help maintain clean environments in structures such as hospitals,laboratories,and farms. We take a customized and flexible approach to better serve our customers in every location where we operate.