High blast-furnace-slag low-carbon concrete secondary products
Drainage blocks, retaining walls and other concrete secondary products manufactured with 55%+ blast furnace slag micro-powder replacement for Portland cement to achieve proportional CO2 reduction per Japanese MLIT low-carbon concrete guidelines.
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Problem solved
Embodied carbon from cement in public infrastructure secondary products; requirement for verifiable low-carbon alternatives compatible with existing construction practices and government green procurement.
Application contexts
- public works
- drainage and river infrastructure
- retaining structures
- MLIT model low-carbon projects
Technical principle
Substitution of Portland cement (which emits ~700kg CO2/t) with blast furnace slag micro-powder at high ratios (55%+), where slag hardens similarly but with far lower process emissions; supports circular use of steel industry byproduct.
Typical use cases
- Low-carbon drainage blocks, box culverts, retaining wall blocks for municipal and national infrastructure projects seeking CO2 reduction credits or green specs
Partnership route
How global engineering teams typically engage this asset.
Helpful to include: product type and dimensions (e.g. specific block models) · required replacement ratio or CO2 target · project certification or reporting needs · volume estimates
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Source & provenance
Translation review status: unreviewed. Publication does not establish technical verification or supplier endorsement.
Original language: JAPANESE.
Record updated: .
- Environmental consideration type concrete (low-carbon concrete) product manufacturing and sales started
https://www.shikoku-block.jp/
Primary-source candidate; evidence review: pending.
Source accessed / recorded (collector timestamp): .
Source publication date: Not recorded.
Collector timestamps record when a source was stored, not an independent verification date. Source links provide context; they do not validate every specification, readiness label, certification, or proposed partnership route.