What is the description of construction industry?

The construction sector comprises establishments primarily engaged in the construction of buildings or engineering projects (e.g., highways and utility systems).

What are the unique features of construction in India?

The unique features of construction in India are as follows: Each structure is unique.

Each structure is unique: Even if the structures are similar, there is possibility of variation due to the influence of:
  • Availability of material & labors.
  • Type of sub stratum.
  • Atmospheric condition.
  • Natural condition.

What is the main characteristics of durability in building construction?

Durability is the resistance to degradation of products, materials, buildings and other built assets over time. This can be a difficult property to assess – whilst a tough material may be hard to the touch but it may also be non-durable if it decomposes or is eroded in a relatively short period of time.

Why construction industry is important?

Construction sector is considered to be one of the main sources of national’s economy and also country development. The construction activities are also significant to the achievement of national’s socio-economic development goals of giving shelter, infrastructure and employment.

What are the main factors affecting the durability of a building?

The most significant factors are environmental factors like humidity, moisture content, temperature and exposure time. Also the properties of wood and other materials, preservatives, surface treatments, structures, details… Summary: Several factors affect the durability and service life of wood in buildings.

What is strength and durability of concrete?

Concrete durability depends upon the degree of exposure, the concrete grade (or strength) and the cement content. A high density, alkali-resistant concrete will better resist the effects of moisture penetration.

What is the strength of concrete?

Usually, the compressive strength of concrete varies from 2500 psi (17 MPa) to 4000 psi (28 MPa) and higher in residential and commercial structures. Several applications also utilize strengths greater than 10,000 psi (70 MPa).

What reduces the strength of concrete?

Aggregates: Quality of aggregates, its size, shape, texture, strength etc determines the strength of concrete. The presence of salts (chlorides and sulphates), silt and clay also reduces the strength of concrete.

What is reinforced concrete structure?

8.5.

The reinforced concrete structure refers to the members, such as beams, boards, columns, roof trusses, consisting of concrete and steel bars. In these structures, the steel bars are enwrapped by concrete, but their mechanical properties will still lose due to the fire to destroy the whole structure.

What is cement factor?

cement content, cement factor

The quantity of cement contained in a unit volume of concrete or mortar, preferably expressed as weight, but frequently given as bags of cement per cubic yard of concrete, e.g., a 6 ½-bag mix.

What is maturity of concrete?

Concrete maturity indicates how far curing has progressed. Maturity is the relationship between concrete temperature, time, and strength gain. It is represented by an index value that can be measured in real time in the field.

What is the strongest concrete mix?

C40 concrete is the strongest and most durable mix and for good reason townhomes for sale san diego. It can handle almost any abuse, including withstanding corrosion, making it ideal for farm-based and laboratory environments.

What is cement formula?

Chemical composition

Portland cement is made up of four main compounds: tricalcium silicate (3CaO · SiO2), dicalcium silicate (2CaO · SiO2), tricalcium aluminate (3CaO · Al2O3), and a tetra-calcium aluminoferrite (4CaO · Al2O3Fe2O3).

What is the density of sand?

between 1520-1680 kg/m3