These elements are produced in sophisticated steel moulds and shutter vibrators are used uniformly for wall compaction. Also, the grade of concrete minimum M40 is used, says Shridhara CN, Associate Director – Technology and Marketing, Preca Solutions India Pvt Ltd.
How does the use of Precast Concrete technologies ensure the rapid construction of infrastructure projects?
All structural elements are produced offsite so there will be no concrete work at the construction site. Usually, infrastructure work disturbs the public movement and by using precast technology it can be avoided. The offsite casted elements can be brought to the construction site at night and could be put in place for erection. The work can be completed in a short duration and it also avoids pollution generated through construction on the environment.
Our effort is to bring proven technologies and methods of construction to the real estate and infrastructure sectors. Having successfully executed large scale projects worldwide, including Israel and Africa, Preca is now poised to make a mark in the Indian construction industry.
Backed by the biggest precast equipment manufacturer in Europe, we are now geared to bring about change with prestressed and precast technology from Europe, Israel and Dubai to the Indian industry. We are determined to make a difference in the development of various segments such as commercial and retail; residential; hospitality; industrial; and warehousing.
What are the factors which determine the shape and design of the Infrastructure precast superstructure?
In precast construction, element size design plays a major role. The precast vendor should involve an architect from the initial stage design and both should discuss the economic cost in the architectural designs. Although any shape /profile can be produced in precast, making the mould involves extra cost.
What are some of the additives which are generally utilised in precast structures to ensure they remain robust for a longer time period?
All precast elements are more durable and robust as all elements are produced in sophisticated steel moulds. The shutter vibrators are used uniformly for wall compaction. Also, the grade of concrete minimum M40 is used. This higher grade of concrete will give good quality and durable elements. Normally, no additive is required to increase durability. The accelerators will be used in concrete to achieve concrete strength.
What are the specific areas in infrastructure where precast can pay a major role?
Precast trenches should be used to construct roadside sewerage drains, cable trenches etc. If constructed with proper planning, these trenches can avoid frequent digging of roads. Ducts, road tunnels, aqua ducts and road cross overs can be done very easily using precast technology. Flyovers and bridges have been built over the years in India using precast technology. Implementation of precast for building roads should happen in a big way across India.