The Constructor - Civil Engineering Home for Civil Engineers

The Constructor - Civil Engineering Home provides informational resources to Civil Engineers around the globe on various subjects such as construction management, Structural Engineering, Building Construction Tips, How to Guides for Civil Engineers etc.

Carbon Fibre Reinforced Polymers for Concrete Construction

The main impetus for development of carbon fibres has come from the aerospace industry with its need for a material with combination of high strength, high stiffness and low weight. Recently, civil engineers and construction industry have begun to realize that ...

FIBRE REINFORCED POLYMER

An FRP composite is defined as a polymer that is reinforced with a fibre. The primary function of fibre reinforcement is to carry load along the length of the fiber and to provide strength and stiffness in one direction. FRP ...

COMPOSITES IN CONSTRUCTION

Composite is a mixture of two or more materials that differ in form, chemical composition and essentially insoluble. There are two categories of constituent materials: matrix and reinforcement. The reinforcement imparts its special mechanical and physical properties to enhance the matrix ...

COMPACTION FACTOR TEST

AIM To study the workability of concrete APPARATUS Compaction factor apparatus’ trowels, hand scoop (15.2 cm long), a rod of steel or other suitable material (1.6 cm diameter, 61 cm long rounded at one end ) and a balance. SAMPLING Concrete mix (M15) is ...

COMPRESSIVE STRENGTH OF MORTAR CUBES

AIM To find the compressive strength of standard cement sand mortar cubes. APPARATUS 7.06cm cubes moulds (50cm2 face area), apparatus for gauging and mixing mortar, vibrator, compression testing maching etc. PROCEDURE Take 200gm of cement and 600gm of standard sand in the proportion 1:3 by ...

FINAL SETTING TIME OF CEMENT

To determine the final setting time of cement. This test is required to understand the rate of gain of strength of cement w.r.t. to time. APPARATUS Vicat apparatus, needle for initial setting time, stop watch. PROCEDURE Take 400 gm of cement in a pan. ...

INITIAL SETTING TIME OF CEMENT (IS 4031, IS 269)

To determine the initial setting time of cement. This test is required to understand the time cement takes for initial setting between mixing and transporting and placing of concrete. APPARATUS Vicat apparatus, needle for initial setting time, stop watch. PROCEDURE Take 400 gm of cement in ...

STANDARD CONSISTENCY OF CEMENT

To determine the quantity of water required to produce a cement paste of standard consistency. The standard consistency is that consistency, which will permit the vicat plunger to penetrate to a point 5 to 7mm from the bottom of the vicat ...

BEAM CHARACTERISTICS

There are a number of properties of a beam that an Engineer should be aware of as they dictate beam behaviour when subject to a load and ultimately represent possible areas or mechanisms for failure. The main ones being:...

CIRCULAR PRESTRESSING

Circular Prestressing” is employed to denote the prestressing of circular structures such as pipes and tanks where the prestressing wires are wound in circles. In contrast to this term, “linear prestressing” is used to include all other types of prestressing, ...