株式会社シリカジャパン

北海道石狩市緑苑台東3条1丁目52 Low ja

Very small Hokkaido-based manufacturer of volcanic glass micro-powder concrete admixture 'Silica White', a natural pozzolan that can replace a portion of Portland cement in concrete, reducing CO₂ emissions from cement production while improving durability. Originally established as a yūgen kaisha in 1996 and reincorporated as a kabushiki kaisha in 2024. Registered on NETIS and JIS A 6209 certified for concrete-use volcanic glass micro-powder.

Core capabilities

Natural pozzolan volcanic glass micro-powder production for concrete
Supplementary cementitious material (SCM) formulation
Concrete durability enhancement (waterproofing, chloride resistance, freeze-thaw resistance)

Related capability assets

Silica White — Volcanic Glass Micro-Powder Concrete Admixture

A natural pozzolan micro-powder (volcanic glass ground to 3–4× cement fineness) that replaces a portion of Portland cement in concrete, reducing clinker factor while improving durability (waterproofing, chloride resistance, freeze-thaw resistance, ASR suppression). JIS A 6209 certified and JIS A 5308 listed. NETIS registered.