Make your home page  |  Add to Favorites
Home  |  Sign In  |  Join Free  |  Member Center  |  Help
Sorry,No Records!
English     Chinese
China Product Yahoo pages Google pages Bing pages
Popular Technology
Technology Detail
Using mortar joints to reduce stresses in refractory structures and modelling experience
Source:Site  Hits:2244  【Font:Big Middle Small【All Technology】
Refractory structures in the steel industry are supported by the steel shell or the foundation. Upon heating the lining expands. Often expansion joints are built in to allow the refractories to expand without damage to the supporting construction. The mortar joint is also known to give provision for the expanding masonry. This aspect is not yet fully accountable and the design of mortared linings is still based on experience.
A properly designed mortar joint will act as a "smart" expansion allowance. Gradual softening of mortar at higher temperatures relieves thermo-mechanical stresses at
locations where it is most needed. Too stiff mortar, on the other hand, in combination with insufficient expansion provisions, may be a cause of lining failure.
To realise the full potential of the mortar joint to reduce thermal stresses one needs to understand it's thermomechanical behaviour. This can be achieved by combining laboratory tests with computer analysis of lining structures. Laboratory tests should disclose typical behaviour of the material when it is exposed to different loads (e.g. temperature, force). This material data serves as input for a computer model. The computer analysis predicts temperatures ans stresses in the lining.
In the reported study compressive behaviour of mortars of two types was investigated. Aluminosilicate and carbon based mortars were measured. The data obtained were used in computer models of several refractory structures. The analysis results of a blast furnace hot blast main are illustrated here. During the work a special emphasis was placed on the methodology for compressive testing of mortars and on the implementation of the test results into the computer code.
Previous:Experimental Analysis of the Evolution of Thermal Shock Damage Using Transit Time Measurement of Ultrasonic Waves
Next:Monolithic Linings For Hydrogen Atmosphere PM Sintering Furnaces
AboutUs  |  Service  |  Advertising  |  Business  |  Customer Service  |  Help  |  Contact Us  |  Announcement  |  Links  |  Messages
[ICP 1100473]   Copyright   jinmao foundry(芜湖市金贸商务科技有限公司)
etwork Tel :(86)0553-7258567 / 7252588   Fax Tel:(86)0553-7257789 地址:安徽省芜湖市繁昌孙村工业园区