Inquiries

Aiming at making the best concrete
Special concrete admixture "SILICA WHITE"

What is "Silica White?"

"SILICA WHITE" is a highly reactive pozzolan processed from a natural volcanic vitreous white silica deposit. It is crushed into ultra fine powder, finer than one third of cement particles.
Concrete, mixed with "SILICA WHITE", achieves :

Silica, main component of "SILICA WHITE", quickly reacts with the calcium hydroxide in cement water to produce binding gel on cement particles (Pozzolanic reaction) which locks in calcium hydrate that can cause water penetration on a long term basis and simultaneously fills the voids caused by bleeding during the hardening period.
These chemical and physical effects contribute to make high watertight concrete semipermanently.

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Performances of "Silica White"

  1. 1.Crack prevention
  2. 2.Reduced water permeability
  3. 3.Prevention of neutralization
  4. 4.Improved resistance to salt and chemical attack
  5. 5.Improved resistance to freeze-thaw damage
  6. 6.Reduced efflorescence and bleeding problem
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Construction Examples

FUKUOKA Prefecture KAMA City Hall
Architecture

FUKUOKA Prefecture KAMA City Hall

One city and three towns namely Yamada-city, Inatsuki-town, Usui-town and Kaho-town became “Kama city” in 2006 by municipal merger in order to realize unique and energetic community and to create a comprehensive future plan with strengthened urban infrastructure. In the year 2011 “A special investigative committee regarding a new city hall” was formed. In 2012 after 7 deliberations the location of the new city hall was decided based on an approved bill submitted by city council members. On 14th of April 2016 a strong strike-slip fault earthquake of magnitude 6.5 with its seismic center in Kumamoto prefecture attacked Kyushu island. The maximum 7 on the seven-point Japan scale was observed ...

IBARAKI Prefecture MITO City Hall
Architecture

IBARAKI Prefecture MITO City Hall

The new city hall of Mito city was opened in January 2019. The plan was laid out based on careful researches such as the result of “questionnaire survey of 10,000 Mito citizens on the future vision of Mito city” after the great east Japan earthquake, opinions of citizens’ investigation committee on the improvement works of the city hall, grasping works of citizens’ needs and discussions at the special investigation committee of the city council. One of the important duties of the city hall has been the safety performance as a comprehensive disaster prevention center and in addition to the earthquake resistance capacity the hall guarantees the maximum safety structurally and ...

HOKKAIDO HAKODATE JOMON Culture Center
Architecture

HOKKAIDO HAKODATE JOMON Culture Center

Completion
2011
"SILICA ECO BLACK" 20kg/1㎥
Designed by
Atelier BNK Sapporo City

A roadside station 「Jyomon Roman Minami Kayabe」was opened in 2011. Hakodate city Jyomon cultural exchange center is located next to this station. A variety of ancient relics like earthenware and stoneware which have been unearthed from Minamikayabe Jyomon remains and other remains in Hakodate city area are exhibited. They include an exquisite full-length hollow earthen figurine which was designated as the first national treasure in Hokkaido. The unique in the world Japanese Jyomon-culture , lasted for over 10,000 years and a wide variety of tools like earthenware, stoneware and bonetools of this culture are exhibited. You can also learn about their vertical cave housing and storage pits and the culture’s ...

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What's New

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