The properties of an Epoxy resin based floor topping are governed by the type of resin/hardener binder system used, and the type and amount of filler added. Floor toppings with special properties can be formulated by selecting the most suitable binder system.
Epoxy resin epoxy floorings in general exhibit the following characteristics :
The mechanical properties of the Epoxy resin based topping are clearly superior to those of the cement mortar screed, particularly as regards flexural strength. In addition, the Epoxy resin topping offers other advantages such as better resistance to chemicals and excellent adhesion to a large variety of substrates.
However, when planning to lay a new floor it is always advisable to seek the advice of our experts working for established flooring projects. We can recommend the most suitable system for a given application.
The following table provides comparative figures for the mechanical properties of an Epoxy resin based topping (binder-to-silica sand ratio 1:6 pbw) and a high grade B 400 cement mortar screed :
Epoxy Resin floor toppping | Cement mortar screed | ||
Density | c. 2000 kg/m3 | 2400 kg/m3 | |
Compressive strength | 90 - 110 N/nm2 | 40 N/nm2 | |
Flexural strength | 25 - 35 N/nm2 | 5 N/nm2 | |
Modulus of elasticity | 15,000 N/nm2 | 30,000-40,000 N/nm2 | |
Coefficient of linear thermal expansion | 25 - 40 10 6 cm/cm 0C | 10 - 15 10 6 cm/cm 0C | |
The planning stage is the best at which to decide where Epoxy resin based floor toppings are to be laid; the subfloors cansider carefully the stresses to which the floor will later be subjected, special attention being paid to t be correctly designed for strength, surface finish, evenness, etc. It is also the best stage to conhe following points:
Mechanical stresses
|
Duration of exposure to chemicals
|
|
Type of traffic
|
Cleaning methods
|
|
Indoor or outdoor site ?
Likely variations in ambient temper ature and pressure of expansion joints in the subfloor
|
Intervals at which floor will be cleaned Safety factors required
|
|
Chemical attack
|
Appearance requirements
|
|
The expenditure budgeted for the floor |