Mgo board problem and solution

Views:7619     Author:Rockmax     Publish Time: 2018-12-13 


Mgo board is a innovative fireproofing building materials, it is popular for superior fire resistant, low heat transfer, high strength and economical efficiency. Now BBA, LABC, CCMC, CERT MARK, University of Denmark and St. Petersburg has demostraded and warned mgo board contains chloride which has risk of corrosion to steel frame and damp insulation materials in humidity, damage adjoining building components. ROCKMAX share our experience about mgo board.

What is mgo board?
Magnesium oxide board or “mgo board” in short,it’s flat wall panel,thickness range from 3mm-30mm
It is three element cementitious materials, magnesium oxide, salt and water.

How many type of mgo board?
Basically three Type.

Magnesium oxide react with different salt. Magnesium chloride, magnesium sulfate and magnesium phosphate

Why Mgo board cause steel corrosion and damp wall?

Magnesium chloride is high corrosive salt. The excessive magnesium chloride is soluable and moveable toward moisture. Chloride ion would attack frame and screw when boards installed in high humidty enviroment(80%). Magnesium chloride also absorb moisture from the air, will damp paint and insulation material. Magnesium sulfate and magnesium phosphate is low corrosive salt. Chloride free mgo board’s PH value is 8.

How to prevent mgo board corrosion?
1,Suggest to laminate a layer of plastic film on the back,use aluminum frame and stainless screw.

2,It’s better to use waterproof sealer, to seal board’s face, back and bevels before installation.

3,Buy magnesium sulfate board to replace of magnesium chloride board.

How can we find out mgo board contains chloride or not?
1,Put steel and small pieces of mgo board in a cup of purified water, check corrosion after 15 days.
2,Apply chloride content test in laboratory, cost $300 and 7 working days.

Mgo board(contains chloride) corrosion example

Interior Wall

Basement corrosion

Every product has low quality and high quality, with appropriate application and limitation.

Defective mgo board damage steel frame structural, it would be eliminate soon.

Chloride free mgo board get rid of chloride ion,it will be a prospective product.

ROCKMAX has been research and develop chloride free mgo board over 10 years. ROCKMAX is high quality noncorrosive mgo board with 20 years warranty.

ROCKMAX mgo board has been tested to EN 12467 in full, material safty meet Europe REACH regulation, please contact our sales team for more details.

A1 Fire Resistant | Non-Flame and Smoke Spread | Impact Resistant | Moisture Resistant | Heat Resistant | Mold Resistant | Insert Resistant | Light Weight And Easy Handle | Snap Cutting And Screw Quick | Chloride Free |Non Corrosive On Steel Frame And Screw | Asbestos Free | 100% Nontoxic | Recycleable Building Material