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Главная страница › Как работает Пенетрон › ИспытанияGamma radiation

Gamma radiation

 

6/19/1993 CERTIFICATE NO. 9305-4136
  Shimel and Sor Testing Laboratories, Inc., Cedar Grove, NJ.
  Exposure of Penetron Treated Concrete to Gamma Radiation
  Result: visual comparison, photographs and the adhesion test performed on the Penetron coating both before and after exposure to 5.76 x 104 of gamma radiation do not reveal any perceptible ill effects or damages. The defects as listed under USA Standard No. Rads N6.9-1967 “Protective Coatings (Paints) for the Nuclear Industry” were evaluated. No fine line cracking (ASTM D661-44), checking (ASTM D660-44), alligatoring, mud cracking (ASTM D661-44), blistering (ASTM D714-56), flaking (ASTM D772-47), discoloration, delamination and chalking (ASTM D659-44) were observed. The categories embrittlement, bubbling, blistering (ASTM D714-56), orange peeling, catalyst migration are not applicable because the Penetron material, according to the technical literature does not act strictly as a surface covering, but rather a treatment which is absorbed into the voids and capillaries of the concrete, later filling these areas with crystalline structures.
7/15/1997 REPORT NO.: B 20297/BSB/2A
  Setsco Services PTE LTD
  Comparative Test for Water Permeability on Plain Grade 30 Concrete Applied with Penetron Cementitious Capillary Waterproofing Systems (powder)
Permeability Test at 3.0 kgf/cm2
Sample Reference Control Treated with Penetron Cementitious Capillary Waterproofing System Powder
  C1 C2 C3 T1 T2 T3
Dimensional Measurement Avg. Diam. (mm)
101.1

100.0

100.0

99.9

100.3

100.8
Average height, L (mm) 51.6 51.7 51.7 51.9 51.8 51.8
Cross-sectional Area, A (m2) 8.03 x 10-3 7.85 x 10-3 7.85 x 10-3 7.84 x 10-3 7.90 x 10-3 7.98 x 10-3
Permeability Hydraulic gradient across samples i=30/L (m head of water/m)

581


580


580


578


579


579
Constant Flow Rate, Q (cc/hr) 0.03216 0.03449 0.03630 0.01579 0.01474 0.01714
m3/sec 8.93x10-12 9.58x10-12 1.01x10-12 4.39x10-12 4.09x10-12 4.76x10-12
Coefficient of Permeability, k (m/sec) 1.91x10-12 2.10x10-12 2.22x10-12 9.69x10-13 8.94x10-13 1.03x10-12
Average Coefficient of Permeability, k (m/sec)
2.08 x 10-12

9.64 x 10-13
Comparative Ratio 0.46
7/15/1997 REPORT NO.: B 20297/BSB/2B
  Setsco Services PTE LTD
  Comparative Test for Water Permeability on Plain Grade 30 Concrete Against Concrete Applied with Penetron Cementitious Capillary Waterproofing System (slurry).
Permeability Test at 3.0 kg/cm2
Sample Reference Control Treated’ with Penetron Cementitious Capillary Waterproofing System Slurry
  C1 C2 C3 T1 T2 T3
Dimensional Measurement Avg. Diam. (mm)
101.1

100.0

100.0

101.2

100.2

100.9
Average height, L (mm) 51.6 51.7 51.7 53.4 52.5 53.6
Cross-sectional Area, A (m2) 8.03 x 10-3 7.85 x 10-3 7.85 x 10-3 8.04 x 10-3 8.03 x 10-3 8.00 x 10-3
Permeability Hydraulic gradient across samples i=30/L (m head of water/m)

581


580


580


562


571


560
Constant Flow Rate, Q (cc/hr) 0.0321625 0.0344875 0.0363020 0.02037 0.01938 0.01897
m3/sec 8.93x10-12 9.58x10-12 1.01x10-12 5.66x10-12 5.38x10-12 5.26x10-12
Coefficient of Permeability, k (m/sec) 1.91x10-12 2.10x10-12 2.22x10-12 1.25x10-13 1.17x10-13 1.17x10-12
Average Coefficient of Permeability, k (m/sec)
2.08 x 10-12

1.20 x 10-13
Comparative Ratio 0.58

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