環(huán)氧涂層預應力鋼絞線(xiàn)氯化物抗滲性試驗裝置性能特點(diǎn)
1放置115mL餾水的隔聞；
2一帶24mm開(kāi)口的兩塊玻璃板之間的環(huán)氧涂腰
3—放置175mL濃度為3mol/L的NaCl水溶液的隔間；
4—水平標記；
5-25mm的中心開(kāi)口。
I. Performance characteristics of epoxy coating prestressed steel strａnd chloride impermeability test device
1 Place aside 115mL of distilled water;
2 an epoxy waist between two glass plates with a 24mm opening
3—Place a 175 mL compartment of a 3 mol/L NaCl aqueous solution;
4—horizontal mark;
5-25mm center opening.
試驗裝置：
兩個(gè)隔間被兩塊玻璃板隔開(kāi)，每塊玻璃板的中心位置都有一個(gè)直徑為24mm的開(kāi)口。試樣被夾在
兩塊玻璃板之間，在開(kāi)口處形成一個(gè)隔膜。當兩個(gè)隔間中的液體體積分別為115mL和175mL時(shí)，兩
個(gè)隔間的液面水平線(xiàn)平齊。夾持隔膜的開(kāi)口應浸沒(méi)在溶液中。
A.1.2.1.2能測定氯離子濃度小于1×10-4mol/L的氯離子計。
A.1.2.2試樣
試樣為無(wú)金屬基體的已固化的方形環(huán)氧涂層，尺寸為100mm×100mm,厚度為9.1規定的最小厚度
A.1.2.3步驟
試樣放置在容器中的兩塊玻璃板之間，其中心位于玻璃板的開(kāi)口處。在大隔間注入175mL濃度
為3mol/L的NaC水溶液，小隔間注入115mL蒸餾水。在23℃±2℃的溫度下試驗45d后，測量小
隔間水溶液中的氯離子濃度
A.1.2.4試驗評定
小隔問(wèn)水溶液中的氯離子濃度應小于1×10mol/L
Second, the test device
The two compartments are separated by two glass panels, each having a 24 mm diameter opening in the center. The sample is clamped
Between the two glass plates, a diaphragm is formed at the opening. When the volume of liquid in the two compartments is 115mL and 175mL, respectively,
The level of the liquid level in each compartment is flush. The opening holding the diaphragm should be completely submerged in the solution.
A.1.2.1.2 A chloride ion meter capable of measuring a chloride ion concentration of less than 1 x 10-4 mol/L.
A.1.2.2 sample
The sample is a cured metal epoxy coating with a metal-free matrix measuring 100 mm x 100 mm and a minimum thickness specified in 9.1.
A.1.2.3 steps
The sample is placed between two glass plates in the container, the center of which is located at the opening of the glass plate. Inject 175mL concentration into the large compartment
It was a 3 mol/L aqueous solution of NaC, and 115 mL of distilled water was injected into the small compartment. Small measurement after 45 days at 23 ° C ± 2 ° C
Chloride ion concentration in aqueous solution
A.1.2.4 Test evaluation
The chloride ion concentration in the aqueous solution should be less than 1×10mol/L.
gbt 21073-2007 環(huán)氧涂層七絲預應力鋼絞線(xiàn)
Gbt 21073-2007 Epoxy coated seven-wire prestressed steel strand
