|43 Grade||53 Grade|
|IS Code||IS 8112||IS 12269|
Comp strength at 27°C
|Initial strength gain|
Continues to gain strength after 28th day
Ultimate strength will be the same for both
|Early strength gain|
|Heat of hydration||Medium||Faster|
For concrete M20 & above grades, 8 – 10% saving is achieved
|Uses||PCC & RCC works upto M30 grade, plastering, tiling, Brick & stone masonry, flooring, pathways, etc. Finishes of all types of bldg’s, bridges, culverts, roads, water retaining structures.|
All RCC structures like footing, column, beam & slab.
RCC works where grade of concrete is M30 & above, High rise bldg’s, industrial works. Precast concrete items such as paving blocks, tiles bldg. blocks, pipes, railway sleepers, poles, etc.
Cold weather concreting, cement groiuts, instant plugging, etc.
Sherri Ford 154 Landscaper
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There are two types of admixtures:
- Mineral admixtures
- Chemical admixtures
Mineral admixtures are mostly solids. Chemical admixtures are mostly liquids.
The most common mineral admixtures are:
- Fly ash
- Ground Granulated Blast furnace Slag (GGBS)
- Rice husk ask
- Silica fume... (More)
Moisture readings must be taken to assure that not more than 12% moisture content is in the plaster prior to the application of any coating.
Cladding is the application of one material over another to provide a skin or layer. In construction, cladding is used to provide a degree of thermal insulation and weather resistance, and to improve the appearance of buildings.
Some of the... (More)
The zero Air Void line is obtained when there is no presence of the air in the pores of a soil mass and totally filled with the water and soil mass get saturated. It is determined by the compaction test... (More)
Bursting Reinforcement is a type of reinforcement that is provided in prestressed concrete.
It helps to resist the lateral tensile stress generated in prestressing operation.
This stress is maximum when stress trajectory is concave at the line of center of... (More)
Stirrups are mainly provided for holding the main reinforcement of beam. It prevents the buckling of beam and also protect the RCC structure during seismic activity. Stirrups providing protection against flexural and shear failure as shown in figure.
The castellated beam is a rolled steel beam that has an expended section that allows a predetermined hexagonal pattern to be cut directly on the webs of the beams. Castellated beam geometric properties are typically thinner than a standard steel... (More)
OPC stands for ‘ordinary portland cement’ mainly used for high rise building construction which took the lowest time to set and harden. OPC is manufactured to powdered form by mixing limestone and other raw materials containing argillaceous and calcareous components... (More)
The chemical reaction occurs in the Portland cement when pozzolans are added and react with water is called a pozzolanic reaction.
In this reaction is silica, its precursors, with the absence of cementing properties, converts into a calcium silicate with... (More)
Basically in soil there is 3 part
- Solids partical
When water added to soil, at that time soil become saturated. And when air contain replace by water and soil become fully saturated at that time soil have two... (More)
The function of the arch arc lintel is to carry the weight of the structure above the opening.
Advantage of lintel over arches:-
1. Their formwork is inexpensive.
2. Easy to construct.
3. They are looking simple but carry load... (More)
Civil engineers can apply the wide variety of data from variety of sources in their field. They can practically apply the ‘Spatial analysis’ in field surveys, to solve location problems. Spacial analysis helps to apply modern technology in geographical surveys... (More)