.

SKAL-H Rapid Concrete Alkali Tester

Detection method: ISE (Ion Selective Electrode)
Test indicators: the alkali content of concrete and raw materials, means the equivalent content of sodium oxide Na2O (%)

Manufacturer:
Product Application:
Concrete materials contain alkali (potassium ion, sodium ion).When the concrete is in the sufficient moisture environment after a period of time, the concrete bases alkali(potassium ion, sodium ion)will react with the active silicon in the thickness aggregate.The reaction will cause the expansion of the structure and cracking, means the alkali-aggregate reaction. As the alkali-aggregate reaction will cause harmful effects to concrete structures, both domestic and foreign departments take great attention to concrete alkali content limits.
According to “Standard for Maximum Alkali Content in Concrete” CECS 53:93 ,“Standard for Durability Assessment of Concrete Structures” CECS 220:2007 and some other relevant standards,the concrete alkali content refers to the equivalent oxidation sodium content in the concrete ,by kg/m3. The alkali content of the concrete raw material refers to the equivalent oxidation sodium content in the concrete raw materials, by weight percentage (%). And the oxidation sodium content is equivalent to the sum of the oxidation potassium plus the oxidation sodium times 0.658, namely "the equivalent oxidation sodium content= Na2O + 0.658 * K2O".
The apparatus adopts Ion Selective Electrode method (ISE), and it uses the United States imported composite potassium Ion Electrode and composite sodium ions Electrode to rapidly test the alkali content (%) of the concrete (including fresh concrete, wet concrete, hard concrete powdery sample,etc) and the concrete raw materials (including the cement, chemical additive, admixtures, etc.) at room temperature

Executive Standard
1.“Standard for Maximum Alkali Content in Concrete” CECS 53:93
2.“Standard for Durability Assessment of Concrete Structures” CECS 220:2007

Product features:
1.10minutes test cycle to rapidly test the concrete alkali content
2.Specific anti-ion interference agent, strengthen ion concentration and remove all kinds of metal interference effect in the same time
3.High precision potassium, sodium ions composite electrode, stable performance
4.Large LCD screen straight display, hand-held printer for instant printing, operation is reasonable
5.Unique self-diagnosis function, original PC analysis software
6.Great data storage capacity, can store 100 test data
7.Data record continuous, safe and reliable

Test object: fresh concrete, wet concrete and concrete raw material

Detection principle:
NJAL-H rapid concrete alkali tester adopts ion selective electrode method (ISE method) rapidly to test the alkali content of the water-soluble matter, such as concrete, gravel, and additive.
The concrete or other samples should be pretreated before usage. Put the two prior activated and calibrated electrode into the mixture according to the instructions, one of the electrode tests the sodium ion content, the other one tests the potassium ion content. The instrument can turn the tested voltage data (mv) into Na2O and K2O content (%) through the calibration curve. After filling the result to the host calculation formula ,it will automatically get the Na2O percentage (%) of the concrete alkali content. After the electrode activation, each experiment process will need only 10 minutes.

Technical parameters
Power voltage: AC 220V
Working voltage: DC 3.6V
Test precision: =<10%
Printer working voltage: DC 5V
Data storage capacity:100
Pc communication parameters:2400 baud rate
Acquisition cycle:=<3min
Standby time: >24 hr
Weight:240g
LCD SCREEN dimension: 128*128

Test step:
1) Activate electrode
2) Weight and pretreat the samples according to the instructions
3) Calibrate electrode and test the sample solution
4) display measured data
Test results:
1) Concrete alkali content percentage (%)
2) Concrete oxidation sodium percentage(%)
3) Concrete oxidation potassium percentage(%
Measuring range: 0.001% ~ 30.000%
Measuring precision: +/-10%
Operating temperature: 0centigrade ~ 45 centigrade
Resolution: 0.001.


System Configuration
1.NJAL-H rapid concrete alkali tester
2.Composite sodium ion Electrode
3.Composite potassium ion Electrode
4.Calibrated solution, ionic strength adjustor
5.Charger
6.Hand-held micro-printer
7.PC computer software



Send product request

To: Beijing SKE Technology Co.,Ltd
Your E-mail:
Message text:


Send to other suppliers

Other supplier products

DJCS-05 Crack Depth measurement instrument
DJCS-05 Crack Depth measurement instrument According to: Technique Regulation of Concrete Defect Detection with Ultrasonic CECS21: 2000 Depth measurement principle When vibration energy tran...
DJGW-2A Scanning Rebar Locator
DJGW-2A Scanning Rebar Locator The DJGW-2A apparatus is mainly used for testing concrete structure’s quality; locating the steel bar’s position and Measuring the reba...
SKZY-50/100 anchor shank tension tester
SKZY-50/100 anchor shank tension tester Executive Standard GB50367-2006 Design code for strengthening concrete structure Description: The instrument is suitable for testing the anchorage ...
SK-225 concrete test hammer
SK-225 concrete test hammer Brief introduction: The test hammer submits to standard of GB/T9138-1988 and JJG817-93 and JGJ/T23-2001. NJ-225 concrete test hammer is applied to ...
SKC71 Ultrasonic Cross-hole Automatic Pile Testing System
SKC71 Ultrasonic Cross-hole Automatic Pile Testing System Purpose Testing of building foundation piles by cross-hole sonic logging; Inspection of concrete defects by ultrasonic method, such as uncompacted,...
All supplier products

Same products

SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED
SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED Seller: SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED These are our official websites: 1. 2. 3. 4. 5. 6. 7.
SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED
SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED Seller: SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED These are our official websites: 1. 2. 3. 4. 5. 6. 7.
Temperature Transmitter
Temperature Transmitter Seller: Shanghai Chenzhu Instrument Co., Ltd. SHANGHAI CHENZHU INSTRUMENT CO., LTD. is a very established provider that specialises in automati...
Surge Protection Device
Surge Protection Device Seller: Shanghai Chenzhu Instrument Co., Ltd. SHANGHAI CHENZHU INSTRUMENT CO., LTD. is a very established provider that specialises in automati...
Signal SPD
Signal SPD Seller: Shanghai Chenzhu Instrument Co., Ltd. SHANGHAI CHENZHU INSTRUMENT CO., LTD. is a very established provider that specialises in safety a...