Mortar and dry pack
Dry pack is a combination of Portland cement and sand passing a No. 16 sieve mixed with just enough water to hydrate the cement. Dry pack should be used for…
Fiber Reinforced Concrete
Plain concrete possess a very low tensile strength, limited ductility and little resistance to cracking, Internal micro - cracks are inherently present in the concrete and its poor tensile strength is due…
Ferro cement
Ferro cement technique, though of recent origin, have been extensively used in many countries, notably in U.K. There is a growing awareness about the advantages of this technique, all over…
Sulphur Inflitrated Concrete
New types of composites have been produced by the recently developed techniques of impregnating porous materials like concrete with sulphur. Sulphur impregnation has shown great improvement in strength. Physical properties…
Polymer concrete
Polymers are used in the production of 3 types of polymer concrete composites: polymer-impregnated concrete (PIC), polymer concrete (PC, polymer Portland cement concrete (PPCC). Polymer concrete is formed by polymerizing…
Expansive cement
Expansive cement, when mixed with water, forms a paste that, after setting, tends to increase in volume to a significantly greater degree than Portland cement paste. This expansion may be…
Special elements for accelerated strength
In repairs of certain structures, particularly roadways and bridges, it may be desired that early strength gain should be rapid as possible. The engineer may, as a first approach, consider…
Chemical Admixtures in Concrete
The modern construction industry uses a variety of chemical admixtures in concrete, to reach desirable qualities along with a view to promote sustainability in it. ASTM C 125 defines an…
The Difference Between Cement, Concrete, and Mortar
The terms cement, concrete, and mortar can be confusing to DIYers, who may lump them all together as being messy substances used in masonry that harden to form a flat surface or to…
Necessitation of the maintenance
The causes which necessitate the maintenance effects the service and durability of the structure as follows: · Atmospheric Agencis · Normal wear and tear · Failure of structure Atmospheric Agencis Rain: It is the…
