Japan’s cement market is shrinking to levels unseen since the 1960s, prompting industry reshaping towards recycling and environmental strategies amid labour shortages and declining construction activity.
Japan’s cement market is edging into territory that once seemed unthinkable. The Japan Cement Association expects domestic demand in fiscal 2026 to fall to about 30 million tonnes, slipping below the 31.05 million tonnes recorded in fiscal 1964, the year Tokyo first staged the Olympics. For an industry that once rode the country’s post-war construction boom to a peak of 86.28 million tonnes in fiscal 1990, the latest outlook underlines how far the market has contracted.
The decline is being driven by more than a soft patch in construction. Builders are facing persistent labour shortages, tighter overtime limits introduced in April 2024 and a broader shift towards shorter working weeks at site level. Industry figures say projects are now taking significantly longer to complete, with one source noting that work that previously took a year can now stretch to 18 months. That is weighing directly on cement shipments and making the downturn look structural rather than cyclical.
The consequences reach well beyond sales volumes. Cement makers are also important industrial recyclers, taking in steel slag, coal ash, waste plastics and other by-products as feedstock and fuel. A prolonged contraction in output could leave Japan with less capacity to absorb those materials, while also weakening the sector’s ability to supply large quantities of building materials quickly after a major earthquake or other disaster.
Companies are already reshaping their footprints. Mitsubishi Materials plans to stop cement production at the No. 2 area of its Kyushu plant in Kanda, Fukuoka prefecture, by the end of March 2027 and turn the site into a recycling hub for waste plastics and other materials. Tokuyama is also trimming capacity at its plant in Yamaguchi prefecture and has announced plans to sell its cement sales business to Taiheiyo Cement. Both groups have been leaning more heavily on recycling and environmental services as domestic demand erodes.
Tokuyama says its cement arm has long used waste from soda ash plants, coal cinders and other materials in production, while Taiheiyo Cement has been developing systems for reusing municipal waste ash, sewage sludge and other inputs as part of its circular-economy strategy. For an industry now tied as much to waste treatment and decarbonisation as to construction, the challenge is no longer simply how to make more cement, but how to preserve industrial value as Japan’s market shrinks.
- https://www.japantimes.co.jp/business/2026/04/20/economy/japan-cement-demand-fall/ – Please view link – unable to able to access data
- https://www.tokuyama.co.jp/eng/products/cement/resouce.html – Tokuyama’s cement division has been a leader in recycling, utilizing waste materials such as mud from soda ash plants and coal cinders from power generation facilities as raw materials. The company accepts a substantial amount of waste from both internal and external sources for recycling into cement. Their environmentally friendly methods include using waste plastics as thermal energy substitutes and non-combustible components as alternative raw materials. Tokuyama’s large-scale recycling operations are supported by advanced inspection systems to ensure quality control.
- https://japanir.jp/en/company/company-5711/ir/5711-20251223-01_wp_business_update/ – Mitsubishi Materials Corporation announced plans to suspend cement production at the Kyushu Plant Kanda Second District by the end of March 2027. The facility is set to be transformed into a recycling promotion hub specializing in various waste treatments. This strategic move reflects the company’s adaptation to declining domestic cement demand and a shift towards environmental sustainability.
- https://www.taiheiyo-cement.co.jp/english/company/busi/env.html – Taiheiyo Cement Corporation is actively involved in recycling municipal and industrial waste as raw materials and fuels for cement production. Their initiatives aim to create a ‘zero waste’ society by reusing waste materials such as municipal waste incineration ash and sewage sludge. The company has developed technologies like the Ash Washing System and the Applied Kiln System to enhance recycling processes and reduce environmental impact.
- https://www.taiheiyo-cement.co.jp/english/csr/pdf/data/2025/Taiheiyo-Cement-rep2025en.pdf – Taiheiyo Cement’s 2025 Integrated Report highlights the challenges faced by the domestic cement market, including a continuous decline in demand for over 30 consecutive months. Factors contributing to this trend include population decline, increased material and labor costs, labor shortages, and work-style reforms leading to project delays. The report emphasizes the company’s efforts to diversify its business and achieve low carbonization through the utilization of carbon-neutral technologies.
- https://www.businesswire.com/news/home/20250714690194/en/Japan-Cement-Industry-Report-2025-The-%246.82-Billion-Market-is-Adapting-to-Maturity-with-Green-Innovation-and-Export-Focus-Amid-Domestic-Decline—Forecast-to-2029—ResearchAndMarkets.com – The Japan Cement Industry Report 2025 analyses the market’s adaptation to maturity through green innovation and an export focus amid domestic decline. It discusses the impact of maintenance of aging infrastructure, private residential construction decline, and public projects under green transformation on cement demand. The report also highlights the industry’s innovation in low-carbon technologies and circular economy practices, including the use of alternative fuels and waste recycling.
- https://www.alojapan.com/1326893/japanese-cement-producers-used-21.9mt-of-waste-in-2024-financial-year/ – In the 2024 financial year, Japanese cement producers utilized 21.9 million tonnes of post-consumer materials and by-products, marking a 3% year-on-year decline. This decrease is attributed to a reduction in cement production. Notably, the use of waste plastics increased for the fourth consecutive year, indicating a growing trend in recycling efforts within the industry.
Noah Fact Check Pro
The draft above was created using the information available at the time the story first
emerged. We’ve since applied our fact-checking process to the final narrative, based on the criteria listed
below. The results are intended to help you assess the credibility of the piece and highlight any areas that may
warrant further investigation.
Freshness check
Score:
8
Notes:
The article from The Japan Times was published on April 20, 2026, providing recent insights into Japan’s cement market. However, similar reports from February 2026 indicate a 6.5% decline in domestic cement sales compared to the previous year, suggesting that the article’s content may be based on earlier data. ([e.ccement.com](https://e.ccement.com/news/content/60620900635035001.html?utm_source=openai)) Additionally, the article mentions that the Japan Cement Association expects domestic demand in fiscal 2026 to fall to about 30 million tonnes, which aligns with the 6.5% decline reported earlier. This suggests that the article may be recycling older material with updated figures. The presence of similar content across multiple sources raises concerns about the originality of the article.
Quotes check
Score:
6
Notes:
The article includes direct quotes from industry figures regarding the impact of labor shortages and construction delays on cement shipments. However, these quotes cannot be independently verified through online searches, raising concerns about their authenticity. The lack of verifiable sources for these quotes diminishes the credibility of the article.
Source reliability
Score:
7
Notes:
The Japan Times is a reputable news outlet; however, the article’s reliance on unverified quotes and potential recycling of older content from other sources diminishes its overall reliability. The presence of similar reports from other sources, such as the Cement Net Report, suggests that the article may not be entirely original. ([e.ccement.com](https://e.ccement.com/news/content/60620900635035001.html?utm_source=openai))
Plausibility check
Score:
7
Notes:
The article’s claims about the decline in Japan’s cement market due to labor shortages and construction delays are plausible and align with industry reports. However, the lack of independent verification for key claims and quotes raises questions about the article’s overall credibility.
Overall assessment
Verdict (FAIL, OPEN, PASS): FAIL
Confidence (LOW, MEDIUM, HIGH): MEDIUM
Summary:
The article from The Japan Times raises several concerns regarding its freshness, originality, and source independence. It appears to recycle older content with updated figures, includes unverified quotes, and lacks independent verification for key claims. These issues significantly diminish the article’s credibility.