BS ISO 17178:2013 pdf free

BS ISO 17178:2013 pdf free.Adhesives – Adhesives for bonding parquet to subfloor
Pour about 300 g of the adhesive onto the concrete slab. Then, using the notched trowel held at an angle of approximately 60。to the slab, comb the adhesive to provide a uniform application. Hold the trowel at a right angle to one edge of the slab and draw it across the slab parallel to that edge in a straight line.
After a time recommended by the adhesive manufacturer, place at least 10 parquet pieces on the adhesive at a distance of approximately 50 mm apart and load each bonded parquet piece immediately with a weight of 2kg for 60s.
Prepare the test specimens in accordance with 4.3.4 and store them under standard conditions (4.1).
After six days, bond the pull head plates nearly flush to the parquet pieces with a suitably high strength adhesive (e.g. epoxide resin).
After a further 24 h storage under standard conditions (4.1), determine the tensile strength by applying a force at a constant rate of (250±50) N/s until breakage.
Record the maximum force in N. Calculate the tensile strength according to 4.3.6.
Prepare the test specimens in accordance with 4.3.4 and store them under standard conditions (4.1).
After 27 days, bond the pull head plates nearly flush to the parquet pieces with a suitably high strength adhesive (e.g. epoxide resin).
After a further 24 h storage under standard conditions (4.1), determine the tensile strength by applying a force at a constant rate of (250±50) N/s until breakage.
Record the maximum force in N. Calculate the tensile strength according to 4.3.6.
Condition the test specimens under standard conditions (4.1) for seven days and place them in an air-circulating oven at (40±2) °C for a further 20 days. Remove the test specimens from the oven and bond the pull head plates nearly flush to the parquet pieces with a suitable high strength adhesive (e.g.epoxide resin).
Condition the test specimens for a further 24 h under standard conditions (4.1). Then apply a force under constant rate of (250±50) N/s until breakage. Record the maximum force in N. Calculate the tensile strength according to 4.3.6.BS ISO 17178 pdf download.