The lightweight aggregate strength cylinder is used for the inspection of porous lightweight aggregates such as fly ash ceramsite and pottery sand, clay ceramsite and pottery sand, shale ceramsite and pottery sand, and natural light aggregate.
Lightweight aggregate pressure cylinder structure:
It consists of a cylindrical cylinder (with a bottom), a stamping die and a guiding cylinder.
■按上述试样量称取试样，装入承压筒，先用木锤沿筒壁四周轻敲数次，然后装上导向筒和冲压模，检查冲压模的下刻度线是否与导向筒的上缘重合，如不重合，再轻敲筒壁四周直至完全重合为止。 把承压筒放在压力机的下压板上，以每秒约30￣50kg的速度匀速加荷。当冲压模压 入深度为20mm时，记下压力值。
Lightweight cylinder pressure strength tester test steps:
■Sampling 10-20mm grain size (fly ash ceramsite is allowed to use 10 ~ 15mm particle size) of the sample, of which 10-15mm particle size should account for 50% -70%.
■ The specimen was loaded with a pressure cylinder (with a bottom), and the bulk weight was measured three times, and the arithmetic mean was taken. For natural light orthopedics, the average loose material weight value is multiplied by a fill factor of 1.15 as the sample amount; for other light aggregates, the fill factor of 1.10 is multiplied as the sample amount.
■ Weigh the sample according to the above sample volume, put it into the pressure cylinder, first tap it with a wooden hammer along the wall of the cylinder several times, then install the guiding cylinder and the stamping die to check whether the lower scale line of the stamping die and the guiding cylinder The upper edges coincide, if not coincident, then tap the wall around the wall until it is completely coincident. Place the pressure cylinder on the lower pressure plate of the press and load it at a constant speed of about 30 to 50 kg per second. When the stamping die is pressed to a depth of 20 mm, the pressure value is recorded.
■Light aggregate strength bearing cylinder results calculation
Lightweight cylinder pressure strength tester is calculated as follows:
Where: Rt──the compressive strength of the coarse aggregate (kgf/cm2), calculated to the accuracy of lkgf/cm2;
P—pressure value (kgf) when the depth is 20mm:
F──Pressure pressure accumulation (ie, stamping die area F=100cm2).