Why are technical solutions for low-emission cement not being widely adopted?
The core problem is not a lack of technical options — it is that most of them are economically unviable or blocked by outdated regulations without strong policy support. A 2025 scoping review of the cement sector found that every major mitigation pathway — clinker substitution, energy efficiency, alternative fuels, and carbon capture — is technically feasible but faces real-world constraints like high capital costs, limited supply chains, and conservative building codes that do not allow higher clinker replacement rates [6]. For instance, using recycled concrete powder as a substitute for Portland cement can reduce CO₂ emissions by up to 25% and still meet strength standards [1], yet this technology is not widely adopted because standards and incentives lag behind.
Carbon capture, utilization, and storage (CCUS) is often cited as the most critical long-term solution, but it remains commercially unviable without policy intervention. A 2023 study on China's cement industry projected that by 2060, CCUS could account for 33% of total emission reductions, but this depends on massive investment and infrastructure that only government policy can drive [3]. Similarly, a 2021 life-cycle analysis found that combining carbon capture with renewable electricity could cut the carbon footprint of cement and methanol production by about 75%, but the technology requires cell energy efficiency above 60% and low-carbon electricity — conditions that policy must create [2]. Across the studies, the message is consistent: technical readiness is high, but economic and regulatory barriers are the main obstacles.
What specific policy measures are needed to unlock low-emission cement?
The evidence points to several concrete policy actions that would make the biggest difference: carbon pricing, updated building codes, green procurement, and investment in CCUS infrastructure. A 2023 analysis of Brazil, India, and South Africa concluded that production-side measures — like clinker replacement and better concrete mixing — could reduce emissions by 58–71%, but achieving this requires governments to concentrate cement making at professional facilities, enforce CO₂ intensity accounting, and provide financial support for clean production [7]. The same study notes that demand-side measures like building smaller or using less material could add another 13–26% reduction, but these require decades of educational and regulatory effort [7].
A 2026 analysis of German, Dutch, and Norwegian roadmaps revealed a persistent 'sufficiency gap': policymakers prioritize technical fixes and speculative carbon storage while neglecting transformative demand-side measures like reducing housing overconsumption or building smaller [5]. This inflates cement demand and the need for carbon capture, making the overall goal harder to achieve. The authors argue that truly ambitious pathways must integrate demand-side strategies through transdisciplinary collaboration — something only policy can mandate [5]. Meanwhile, a 2023 review of global low-carbon cement projects found that developed regions like Europe focus on CCUS, while developing countries like China and India still prioritize energy efficiency, highlighting that policy priorities differ by context but are always the deciding factor [10].
Can supply-side technologies alone achieve net-zero cement?
No — multiple studies show that supply-side technologies like carbon capture and storage (CCS) cannot achieve net-zero emissions on their own; demand-side efficiency and policy-driven changes are essential. A 2022 study of Japan's cement and concrete cycle found that supply-side efforts could reduce 2050 CO₂ emissions by up to 80% from baseline, but the remaining 20% gap could only be bridged by using cement and concrete more efficiently in buildings — a demand-side measure that requires policy intervention [9]. The authors stress that this pathway depends on how CO₂ uptake by carbonation is accounted for in national inventories, which is itself a policy decision [9].
Another 2023 study using an integrated assessment model for China's cement industry found that energy-efficient technologies are crucial for short-term reductions (cutting SO₂, NOₓ, and PM₂.₅ by 33%, 35%, and 8% respectively by 2030), but achieving net-zero in the long run requires bioenergy with carbon capture and storage (BECCS) — a technology that is not yet commercially viable and depends on strong policy support [4]. A 2023 systematic review of cement decarbonization technologies concluded that a multi-faceted approach coupling materials innovations, alternative fuels, and efficiencies across sectors is needed, and that unwavering stakeholder commitment — which policy can enforce — is key [8]. In short, technical progress provides the tools, but policy provides the will and the means to use them at scale.
About These Sources
This answer is built on 10 peer-reviewed studies — published from 2021 to 2026, 2 from 2024 or later, 9 in Q1 journals, collectively cited 793 times — selected as the most relevant from 14 studies that passed quality screening, drawn from 68 papers retrieved from a database of over 500 million.
Sources used in this answer
Concrete powder waste as a substitution for Portland cement for environment-friendly cement production
Recycled concrete powder can replace up to 25% of Portland cement, cutting CO₂ emissions by up to 25% while meeting strength standards for C40 and C32 classes.
Deep Decarbonization of the Cement Sector: A Prospective Environmental Assessment of CO<sub>2</sub> Recycling to Methanol
Electrochemical reduction of CO₂ to methanol, powered by low-carbon renewable electricity, could cut the carbon footprint of integrated cement and methanol production by about 75%.
Low carbon technology roadmap of China cement industry
By 2060, China's cement industry could achieve emission reductions of 8% from energy efficiency, 4% from alternative fuels, 27% from raw material substitution, 28% from low-carbon cement, and 33% from CCUS.
Negative emission technology is key to decarbonizing China's cement industry
Energy-efficient technologies can reduce SO₂, NOₓ, and PM₂.₅ emissions by 33%, 35%, and 8% by 2030, but net-zero requires bioenergy with carbon capture and storage (BECCS).
The sufficiency gap: the demand-side deficit in German, Dutch, and Norwegian cement decarbonization roadmaps
Cement decarbonization roadmaps in Germany, the Netherlands, and Norway prioritize technical fixes and carbon storage while neglecting demand-side sufficiency measures like reducing housing overconsumption.
Decarbonizing the Cement Industry: Technological, Economic, and Policy Barriers to CO2 Mitigation Adoption
Every major mitigation pathway (clinker substitution, energy efficiency, alternative fuels, CCUS) is technically feasible but faces real-world constraints like high costs, limited supply chains, and conservative building codes.
Towards net-zero emissions concrete and steel in India, Brazil and South Africa
In Brazil, India, and South Africa, production-side measures could reduce cement emissions by 58–71%, and demand-side measures by 13–26%, but policy support is needed for both.
Is net-zero feasible: Systematic review of cement and concrete decarbonization technologies
Most emerging cement decarbonization technologies are at an early stage; a multi-faceted approach coupling materials innovations, alternative fuels, and efficiencies is needed.
Efficient use of cement and concrete to reduce reliance on supply-side technologies for net-zero emissions
Supply-side efforts can reduce Japan's cement and concrete CO₂ emissions by up to 80% by 2050, but the remaining 20% gap requires demand-side efficiency measures.
A review of low-carbon technologies and projects for the global cement industry
Developing countries focus on energy efficiency for cement decarbonization, while developed regions focus on CCUS; policy priorities differ by context.