A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The increased use of deicing salts is causing rapid deterioration of portland cement concrete bridge decks. Soluble chlorides cause corrosion of the steel reinforcing rods with a corresponding increase in volume of the rods. This expansion causes stresses in the concrete which result in delaminations and surface spalling. The repair of surface spalls with portland cement concrete can only be made if traffic can be avoided for several days. A patching material which would allow traffic to resume over the repaired area in a few hours was needed. Polymer concrete (PC) was developed to repair deteriorated portland cement concrete. Polymer concrete is defined as a composite material in which the aggregate is bound together in a dense matrix with a polymer binder. The aggregate is mixed with a monomer mixture and subsequently cured in place. Polymer concrete combines the premix characteristics of portland cement concrete with high strength, long term durability properties and fast cure times. PC placed at temperatures between 35 exp 0 F and 95 exp 0 F attains strengths greater than 5000 psi in 2 hours. The high early strength of PC is suitable for use in the repair of highway structures where traffic conditions allow closing of the area for only a few hours. (ERA citation 03:024741)
The increased use of deicing salts is causing rapid deterioration of portland cement concrete bridge decks. Soluble chlorides cause corrosion of the steel reinforcing rods with a corresponding increase in volume of the rods. This expansion causes stresses in the concrete which result in delaminations and surface spalling. The repair of surface spalls with portland cement concrete can only be made if traffic can be avoided for several days. A patching material which would allow traffic to resume over the repaired area in a few hours was needed. Polymer concrete (PC) was developed to repair deteriorated portland cement concrete. Polymer concrete is defined as a composite material in which the aggregate is bound together in a dense matrix with a polymer binder. The aggregate is mixed with a monomer mixture and subsequently cured in place. Polymer concrete combines the premix characteristics of portland cement concrete with high strength, long term durability properties and fast cure times. PC placed at temperatures between 35 exp 0 F and 95 exp 0 F attains strengths greater than 5000 psi in 2 hours. The high early strength of PC is suitable for use in the repair of highway structures where traffic conditions allow closing of the area for only a few hours. (ERA citation 03:024741)
Polymer Concrete Patching Materials
J. J. Fontana (author)
1977
14 pages
Report
No indication
English
Construction Equipment, Materials, & Supplies , Highway Engineering , Bridges , Concrete-plastic composites , Maintenance , Cements , Chemical composition , Compression strength , Concretes , Mechanical properties , Polymers , Reinforced materials , Sodium chlorides , Steels , Bridge decks , Concrete polymer composites , ERDA/360403 , ERDA/360603 , Deicers , Degradation
Polymer Concrete Patching Manual
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Polymer Concrete Patching. Volume II
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Rapid Patching of Concrete Using Polymer Concrete
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Evaluation of Concrete Patching Materials
| NTIS | 1985