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Assessment of structures

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All civil engineering structures are initially designed depending on certain design criteria, such as design loads, allowable stresses etc. But, damage due to an extreme event is always possible in a structure during its design life. Sometimes, undetected and un-repaired damage may lead to structural failure demanding costly repair and a huge loss of lives. Therefore, the problem of maintenance and repair of existing engineering structures involves damage detection at an early stage.

For massive structures like bridges, dams, flyover, ROB, RUB, chemical plants, thermal and nuclear plants, silos, pre heater towers, chimneys, etc., which were constructed some 20-40 years ago, it is necessary to test its functionality under the present load situation and quantify damage if any. Since it involves huge expenditure to demolish and reconstruct them, it is important to evaluate the residual life-RLA (residual life analysis) of these structures.

Performing NDT of concrete structures, which is a basis for the evaluation of RLA/remnant life analysis ??RLA studies. Many methods are traditionally used for flaw characterisation and measurement of residual stress. Combining these inputs many parameters, including mechanical properties, factor of safety in design, conservative operation of unit, inaccuracy in data extrapolation, overestimation of corrosion effects, etc., would be assessed.

Damage Detection and Condition Assessment of Civil Structures

In the assessment of existing structures, engineers are increasingly faced with not only the challenges of early detection of damage, but also the evaluation of structure performance and behavior under damage, and economical and efficient retrofitting of the damaged components commonly found in older structures. In order to maintain the safety and integrity of structures, research on the damage mechanism, assessment of structure performance in damaged status, and innovative technologies and materials to rehabilitate, repair, and retrofit structures are of great significance.

Retrofitting of a cement Plant Preheater Tower

Inspection by plant personnel revealed cracking in the concrete frame of a 326-ft-tall, 7-level preheater tower. Onsite plant engineers deemed the cracking significant, especially since the structure supports critical manufacturing process equipment. A structural engineering consulting firm was retained to evaluate the extent of the problem and formulate a repair plan on a fast-track basis. The firm mobilised at the site in less than 24 hours and performed an initial structural safety assessment. A comprehensive structural evaluation indicated that the structure required strengthening. Restoration consultants were engaged to assist locally with engineering and construction administration.

A specialty repair contractor also was engaged to review the constructability of several alternate repair schemes and maintain the fast-track schedule. After considering structural capacity and serviceability requirements, durability issues, the high-temperature operating environment, constructability, and an aggressive construction schedule, the team recommended a retrofit consisting of bonded post-tensioning within internal holes drilled in the beams. This solution was quite extraordinary, as it required precision-drilling horizontal holes up to 87 feet long in the beams of the elevated frame structure, without cutting existing embedded reinforcement.

Nondestructive impulse radar testing was used to locate existing embedded reinforcing steel, as well as to monitor the drilled holes’ trajectory. This process helped ensure proper hole alignment and prevent damage to embedded steel. The cored holes served as post-tensioning ducts. The repairs were executed on a fast track basis and under challenging circumstances, which included working high on the exposed structure through a cold winter with severe wind conditions. The unique retrofit resulted in a structure that is stronger, more serviceable, and more durable than the original tower. The project represented an exceptional team effort, and its success is attributable to the leadership of the owner and client, the ingenuity of the engineering team, and the resourcefulness of the contractor.

Case study authored by: Kolf, Peter R, Oesterle, Ralph G

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Concrete

Shree Cement Targets Above Industry Volume Growth In FY27

Chairman says firm will favour organic expansion and higher dividends

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Shree Cement expects to outpace the industry in the financial year 2026-27 as it pursues organic expansion and pricing discipline following a recent investor conference. The chairman said the company has completed a pricing realignment and recovered volumes lost during that exercise. Management signalled a clear preference for internal investments rather than acquisitions to support growth.

The company reported that capacity additions and demand growth across core markets are expected to underpin stronger volume performance, with a target of growing volumes at around 1.1 times the industry growth rate. Cash levels are likely to decline as capital expenditure progresses and shareholder distributions increase, the chairman indicated. The board has prioritised higher dividends over a buyback as a means of reducing excess cash.

Shree Cement described a market shift towards value and affordability rather than a race to the lowest price, which links demand expansion more closely with pricing. Historically, prices have risen at around three per cent annually over long periods, the company noted, and while prices may increase faster this year because of cost pressures from geopolitical tensions, a material improvement in industry profitability is not anticipated. In North India, the company expects additional capacity to be absorbed as demand grows, estimating a requirement of roughly 10 million (mn) tonne (t) of incremental demand annually.

The next phase of expansion will focus on the north, west, east and northeast regions, with existing projects and planned capacities viewed as sufficient to meet future demand without pursuing acquisitions. Management said it has already regained lost volumes while sustaining higher prices and will continue to monitor regional opportunities, including a possible investment in West Bengal pending clarity on industrial policy. The company, which has a current market capitalisation of Rs 852,948.9 mn, has seen its shares lose more than 20 per cent over the past year.

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Concrete

Ramco Cements’ Hard Worker Campaign Wins Seven Awards

Campaign earns honours for direction, editing and cinematography

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The Hard Worker campaign by The Ramco Cements has secured seven honours at the Good Ads Matter Awards 2026, adding to its growing list of accolades and reinforcing its standing among the year’s most recognised advertising campaigns.
The awards were presented during the Good Ads Matter Awards Night 2026 held at Mehboob Studios in Mumbai. The campaign received recognition across multiple categories, highlighting excellence in direction, editing, cinematography and storytelling.
Among the honours, the campaign won Silver in the Campaign of the Year – Direction category, while filmmaker Prakash Varma was named Director of the Year for the films Tortoise & Hare and Eco Plaster. Tortoise & Hare also received Silver awards for Best Editing and Best Colour Grading, along with a Bronze award for Best Cinematography. Eco Plaster earned Bronze awards in the Best Direction – Narrative and Best Direction – Humour categories.
Both films extended their award-winning run, with Eco Plaster being recognised for its narrative centred on water conservation through innovative construction solutions, while Tortoise & Hare was honoured for its storytelling and craft execution.
The Hard Worker campaign was built around the idea that hard work deserves recognition and respect. Through culturally rooted and emotionally engaging stories, the campaign has connected with consumers, engineers, masons and the wider construction community across the country.
Commenting on the achievement, A V Dharmakrishnan, CEO of The Ramco Cements Limited, said that the continued recognition across leading creative platforms reflects the company’s commitment to meaningful and authentic communication rooted in the values of the people it serves.
Balaji K Moorthy, Executive Director – Marketing, The Ramco Cements Limited, said the awards recognise the craftsmanship behind the storytelling, from direction and cinematography to editing and narrative execution.
Following recognition at both the Kyoorius Creative Awards and the Good Ads Matter Awards, the Hard Worker campaign continues to demonstrate the impact of purpose-driven storytelling combined with strong creative execution and consumer relevance.

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Concrete

Cement Makers Reaffirm Commitment to Sustainable Growth

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World Environment Day spotlight on innovation and circularity

On World Environment Day, the Indian cement industry reiterated its commitment to supporting India’s climate ambitions through sustainable manufacturing, resource efficiency and the adoption of cleaner technologies.

The Cement Manufacturers’ Association (CMA) said the sector remains aligned with the Government of India’s Net Zero commitments and is accelerating efforts to reduce its environmental footprint while supporting the country’s infrastructure and development agenda.

Parth Jindal, President, CMA and Managing Director, JSW Cement, said the industry is increasingly adopting cleaner technologies, improving energy efficiency and expanding the use of alternative fuels and raw materials. He also highlighted the growing importance of circular economy practices, where industrial by-products and waste streams from one sector are utilised as resources in another.

“The Indian Cement Industry is aligned to the Government’s commitments on carbon mitigation and is accelerating the adoption of cleaner technologies, resource efficiency and circular economy practices while actively exploring the potential of Carbon Capture, Utilisation and Storage (CCUS) as a critical pathway for deep decarbonisation,” said Jindal.

He added that coprocessing industrial waste and by-products helps conserve natural resources, reduce disposal requirements and lower the environmental footprint across multiple sectors.

According to Jindal, sustainability is no longer limited to manufacturing processes but is increasingly influencing investment decisions, innovation strategies and long-term growth plans within the industry.

Echoing similar views, Dr Raghavpat Singhania, Vice President, CMA and Managing Director, JK Cement, said sustainable development extends beyond emissions reduction and must also focus on responsible resource utilisation and waste minimisation.

“Sustainability in the built environment cannot be measured by emissions alone. It is equally about how efficiently we use resources, how effectively we minimise waste and how responsibly we create the infrastructure that will serve future generations,” said Singhania.

He noted that the cement industry is advancing its sustainability agenda through greater resource efficiency, increased circularity, technological innovation and continuous improvements in manufacturing practices. As a key contributor to India’s infrastructure development, the sector has a critical role to play in balancing economic growth with environmental responsibility.

On the occasion of World Environment Day, industry leaders reaffirmed their commitment to supporting India’s climate goals while delivering the materials required for resilient, durable and sustainable infrastructure.

 

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