The Next Frontier in Construction: Building for Strength, Scale and Sustainability
Bengaluru: As sustainability becomes a measurable business and engineering priority, the construction industry is rethinking its materials. Sourabh Kumar, Founder and CEO, Ecopath Innovations, shares his perspective on the evolution of sustainable construction, barriers to adoption, and why the future of green construction will focus on measurable gains in strength, cost, water efficiency and carbon reduction. He also discusses innovations that could reshape construction and infrastructure over the next five years.
1. Sustainability is gaining prominence in residential and commercial real estate. How has the conversation around sustainable construction materials evolved, and what is driving this shift?
The conversation has moved from “Is green construction possible?” to “Can you prove the impact in tonnes, litres, years and rupees?” Buildings and construction account for approximately 37% of global CO₂ emissions and nearly 50% of global material extraction. With India rapidly expanding its building stock, sustainability is moving from the CSR department to engineering and procurement teams. Green-building adoption also reflects this shift, with India’s registered green-building footprint now exceeding 16.33 billion sq. ft.
Developers are asking sharper questions around embodied carbon, curing water, durability and scalability. Sustainability is gaining acceptance because it is becoming measurable. The materials that succeed will improve performance and economics while reducing environmental impact.
2. What common misconceptions around sustainable construction materials still need to be addressed?
The biggest misconception is that sustainability requires a compromise on strength, cost or reliability. A material is not strong simply because it contains cement, nor is it sustainable merely because it contains waste. Performance comes from chemistry, engineering, manufacturing controls and testing. Ecopath’s Eco-Concrete replaces conventional cement with GGBS, industrial by-products and proprietary binders.
Depending on the mix and application, it can reduce material-related carbon emissions by up to 80% and requires zero conventional water curing. In a 350 sq. metre cement-free road project in Bengaluru, approximately 30 tonnes of cement were eliminated and an estimated 22 tonnes of CO₂ avoided. Sustainable materials must meet the same standards of strength, durability, safety, price and service life.
3. What challenges are preventing the large-scale adoption of sustainable construction materials?
India does not have a shortage of sustainable-material pilots; it has a pilot-to-procurement problem. Many technologies complete laboratory validation, third-party testing and on-site pilots but never make it into the BOQ. Tender specifications often prescribe ingredients rather than performance, which can exclude alternatives even when they meet required standards. There are also concerns around performance risk, execution and supply reliability.
We need a 90-day pilot-to-procurement framework, with clear pass-or-fail metrics covering compressive strength, water absorption, load performance and carbon reduction. If a product meets these benchmarks, a commercial decision should follow within the same quarter. Innovation cannot scale without a clear path from successful pilots to purchase orders.
4. How are government policies, green-building certifications and sustainability regulations shaping material adoption?
India has set ambitious targets, including reducing emissions intensity by 45% by 2030 and achieving net zero by 2070. Frameworks such as the Energy Conservation and Sustainable Building Code 2024, Eco-Niwas Samhita 2024, GRIHA and IGBC are strengthening the focus on energy and water efficiency.
The next frontier is embodied carbon, released during the production of materials such as cement and steel.
By 2028, major public and private projects should disclose metrics such as CO₂ per square metre, curing-water demand and virgin-material use. Public tenders must also move from prescribing ingredients to specifying performance. If procurement rewards verified carbon reduction alongside strength, durability and cost, adoption can accelerate significantly.
5. What innovations will redefine sustainable construction materials over the next five years?
The most consequential innovation may be avoiding clinker before its emissions occur. Calcination accounts for approximately two-thirds of cement-production emissions, creating opportunities for geopolymer concrete, alternative binders, recycled aggregates, carbon mineralisation and industrial by-products such as GGBS.
The next major shift will be from product-level sustainability claims to project-level carbon accounting, with developers comparing materials through CO₂ per cubic metre, carbon per square metre and whole-life cost. Distributed precast manufacturing will also become important, with production closer to project sites helping reduce logistics costs and improve reliability. By
2030, the winning construction material will not simply be the greenest. It will combine strength, speed, cost, carbon reduction and service life.
6. What role can sustainable construction materials play in creating resource-efficient and resilient cities?
India’s urban population is expected to rise significantly, creating enormous infrastructure needs. Every tonne of concrete selected today will influence the carbon, water and maintenance burden of cities for decades.
The opportunity extends beyond buildings to roads, footpaths, drains, kerbs, sewage systems and public spaces, where material substitution can create city-scale impact. Our 350 sq. metre cement-free road project in Bengaluru eliminated approximately 30 tonnes of cement and avoided an estimated 22 tonnes of CO₂.
The technology also removes the need for up to 28 days of conventional water curing, which is particularly relevant for water-stressed cities. Urban resilience means building infrastructure that consumes fewer resources, lasts longer and requires fewer repairs.
7. What are Ecopath’s priorities for the coming year?
At Ecopath, the next phase is about proving that climate impact and commercial scale can grow together.
Our cement-free precast road technology has already been installed, demonstrating that complete road systems can be manufactured without cement and deployed through a modular construction process.
Our next product is a cement-free, ready-mix repair solution for potholes, damaged concrete roads and industrial pavements. India is building more concrete roads, but concrete repairs are often slower and more disruptive than asphalt repairs. We have received multiple requests for a material that can be deployed quickly, bond with existing concrete, gain early strength and allow traffic to resume sooner. We are targeting commercial deployment within six to eight months.
We will also expand our zero-cement portfolio across pavers, kerbs, blocks, drains, hume pipes, boundary walls, industrial flooring and roads.
Ecopath currently operates through seven manufacturing locations, including five in Bengaluru, one in Mysuru and one in Pune. The network can manufacture approximately 1.5 lakh pavers, 50,000 blocks and 10,000 kerbs per day.
We have already avoided more than 500 tonnes of CO₂, based on internal project calculations. Our target is to avoid a minimum of 10,000 tonnes over the next 24 months while building towards ₹100 crore in revenue.
Ultimately, our success will not be measured only by tonnes of material sold. It will be measured by tonnes of cement and carbon removed from construction.