Polymer concreteTypes of polymer concrete, properties, Applications.

A.Pavan kumarB.Tech, Civil Engineering, SVEC, TPT, AP

Benefits of Polymer ConcreteStrength Fire and heat resistanceDurability Thinner application

Lower absorbency Less chalking in outdoor exposure

Chemical resistance Abrasion resistanceTemperature stability Mold ability Faster cure rates Machinability

Polymer concrete(PC) Polymer concrete is a versatile, durable, composite material

produced by mixing a variety of mineral fillers with a synthetic or natural resin binding agent.

It is also known as “ Resin Concrete ”

latex-modified concrete (LMC): also known as polymer Portland cement concrete. Conventional concrete made by replacing part of mixing water with a latex.

Polymer-impregnated concrete (PIC):produced by impregnating or infiltrating a hardened concrete with a monomer and subsequently polymerizing the monomer in situ.

Polymer concrete (PC): formed by polymerizing a mixture of a monomer and aggregate (no other bonding material)

Types of PC:

• Depending on the materials employed, PC can develop compressive strengths of the order of 140 MPa (20,000 psi) within hours or even minutes .

• LMC possess excellent bonding ability to old concrete, and high durability to aggressive solutions; it has therefore been used mainly for overlays in industrial floors, and for rehabilitation of deteriorated bridge decks.

• In the case of PIC, by effectively sealing the micro cracks and

capillary pores.

Significance

• Commercial products are available with a variety of formulations, some capable of hardening to 105 MPa(15,000 psi) within a few minutes without thermal treatment.

• Epoxy resins are higher in cost but offer advantages such as adhesion to wet surfaces.

• Styrene monomer, and methyl methacrylate (MMA) with benzoyl peroxide catalyst and an amine promoter are often used.

Properties of PC:

Stress – Strain diagram for polymer composition

Polymer concrete vs B30 concrete

Material Features: High resistance to chemical and biological attack Lightweight compared to cement concrete products Excellent noise and vibration absorption Excellent dielectric properties Good weathering and UV resistance Zero water absorption Can be cut with masonry drills and grinders Can be recycled as rubble or crushed for use as road foundation Approximately 4 times the flexural strength of cement concrete Good thermal properties and stability Ultra smooth finish which encourages efficient hydraulic flow

Material Properties  Bending strengthShear strengthCompressive strengthModulus of elasticitySpecific gravityWater absorptionOperating temperatureSurface roughness

20 MPa20 MPa90 MPa22,000 MPa2,200 kg/m30.05% by weightup to 80°C25 um

Applications:• Used for pump bases, flooring blocks, chemical

containment, trench drains and more.

• Solid surface countertops for modern kitchens and baths. 

• With its decorative finishes and excellent resilience, polymer concrete is ideal for many ornamental applications including park benches, outdoor furniture, and waste containers. 

• Commonly used in areas subject to heavy wear and high loadings such as car parks, roadways and industrial areas.

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