Gypsum board surface water absorption apparatus

                                   Gypsum board surface water absorption apparatus

A, use:

Gypsum board surface water absorption apparatus, suitable for determination of gypsum board surface water quantity.

Plasterboard of face: GB/T9775-2008 standard.

Second, the technical parameters:

1, try bucket: Ф 112.9 mm

2, try barrel height: 50 mm

3, the weight: 15 kg

Three, specimen preparation:

1, take five on five plasterboard 125 x125mm sample, placed in electrothermal blowing, in (40 + 2) ℃ under the condition of the temperature of the drying to constant weight (specimen within 24 hours of quality rate should be less than 1%), and the temperature (25 + / - 5 ℃, relative humidity (50 + 3) % of the laboratory environment conditions for 24 hours.

Four, test:

1, the first five pieces of sample on the electronic balance each according to its quality (G3).

2, then turning the knob counterclockwise, remove the test cover, to try a mould for injection temperature (25 + / - 5 ℃ water, height is 25 mm, place the sample for try mould on the flap cover, tighten the knob clockwise, filed a positioning pin, 180 degrees turn the handle, flip test tube, locating pin lock automatically, flip timing starts when the test tube, let stand for 2 hours.

After 3, obtainment of test tube, remove the specimen with a neutral filter paper to adhered on the surface of the specimen moisture absorption.

4, in the electronic scales weighing specimen quality (G4), accurate to 0.01 g. Each specimen in the quality of surface water absorption before and after water absorption. In five specimens zui great value in this group of sample surface water quantity, accurate to 1 g / ㎡.

Five, the maintenance:

1, keep the instrument daily clean, dry.

2, the rotating or sliding parts should be no lubrication on a regular basis.

3, fight test mouth and bruised lid plane, so as not to affect the sealing.

4, the product all adopt the anti-corrosive material, test after test in clean, appearance with a dishcloth.