名 称：美国NDT James I-CB-6000 Carbo Detect混凝土碳化深度酸碱指示剂
型 号：I-CB-6000 Carbo Detect
厂 家：美国NDT James
用 途：会指示于混凝土表面酸碱值的改变。只需要将指示剂喷洒在需要测试的表面上, 若混凝土不含碳酸, 试剂会转为粉红色, 若含碳酸, 试剂会维持透明。若混凝土表面非常干燥

产品名称：混凝土碳化深度酸碱指示剂

型号：I-CB-6000

厂家：美国NDT James

会指示于混凝土表面酸碱值的改变。只需要将指示剂喷洒在需要测试的表面上, 若混凝土不含碳酸, 试剂会转为粉红色, 若含碳酸, 试剂会维持透明。若混凝土表面非常干燥, 于表面轻微洒水有助显示颜色.

Carbo Detect™ simple colored dye field test for carbonation.

Features & Benefits

• Test can be carried out compley on site.
• Gives depth of carbonation.
• Minimal operator training and no special equipment required.
• Utilizes only one environmentally safe dye.
• Results obtained in less than five minutes are easy to interpret.
• Economic, fast and easy to use.

Field test to identify Carbonation.

Carbo Detect™ is a simple colored dye field test for detecting carbonation. The single reagent is sprayed on the surface to be checked. The reagent will change to pink in uncarbonated concrete and remain colorless when sprayed on carbonated concrete.

Technical

Carbonation is one of the two main causes of corrosion of steel in concrete, the other is chloride attack. The result of the interaction of carbon dioxide gas in the atmosphere with the alkaline hydroxides in the concrete, the carbonation process effectively drops the pH of the concrete to a level where the steel will corrode. The carbon dioxide dissolves in water to form carbonic acid, which can migrate to the reinforcing steel if the concrete cover is low or if the concrete is of poor quality (open pore structure, low cement content, high water cement ratio, or poor curing of the concrete). Carbonation is more common in old structures, particularly buildings.

Method

Carbo Detect™ reagent is a type of pH indicator which will indicate the change of pH on a freshly exposed concrete surface. The indicator is simply sprayed on the surface to be checked. The indicator will change to pink in uncarbonated concrete and remain colorless when sprayed on carbonated (low pH) concrete. If the concrete test area is very dry, a light misting with water will help show the color.

By spraying the indicator along a core drilled from the top surface down to the reinforcement bar it can be readily seen how far the carbonation has progressed and therefore the outlook for corrosion, which will only occur after carbonation reaches the reinforcement bar.

Care should be taken to prevent drilling and coring dust from contaminating the surface to be tested.

Components

CB-6000 Test Kit

·         200 ml of reagent - sufficient for approximay 100 test

·         Sprayer

·         Carrying Case

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