CEMENT BOARDS APPLICATION FOR M/S.RAMCO INDUSTRIES LIMITED-

ARRAKONAM

Application: Fiber cement Board

Moisture range: 30-40% of moisture

Sensor Model: ET-3000

Application composition:

• Combination of cement and reinforcing fibers formed into 4 foot by 8-foot

sheets

• 40-60% of cement, 20-30% of fibers, 8-10% of cellulose, 10-15% of mica

• 1/4 to 1/2-inch-thick that are typically used as a tile backing board

Aim of Demonstration: To determine the online Moisture in the fiber cement Board

and control the Process Temperature using Closed Loop.

ET-3000 ONLINE SEN DEMONSTRATION:

1. The ET-3000(moisture measurement system) had been calibrated offline with laboratory

samples for linearization. Then the Calibrated values had been compared with the Lab

Value and it was found that the readings were matching the specification.

2. Then the system was mounted online. The trials were conducted and the instant values

were displayed. Using the values from the CCS3000 system, outputs like 4-20mA or

Profibus are provided with which the temperature can be controlled via PLC/SCADA.

3. The readings obtained when connected online was on par with the specified technical

compliance.

S.NO Time LAB values Sensor Values DIFF

1 11.16.AM 36.17 35.70 0.47

2 12.40.PM 35.04 34.20 0.84

3 1.34PM 35.20 34.70 0.50

4 2.35.PM 35.70 34.80 0.90

5 3.05.PM 37.10 36.50 0.60

6 4.35.AM 37.40 37.10 0.30

AVG=0.601

Case study:

1. Accuracy between Gauge value & Laboratory values shall be be around

0.6%.(max)

2. Online NIR readings are more reliable & accurate compared to other moisture

measurement techniques.

3. Helps control the process thereby reducing the wastage of Product.

4. Helps maintain the quality of the product.

SPECIFICATIONS FOR FINAL PRODUCT

PROPERTIES UNIT STANDARD VALUES

Dimensional Characteristics:

PROPERTIES UNIT STANDARD VALUES

Thickness mm IS 14862:2000 4, 6, 8, 10, 12, 16 and 18

Nominal Length mm IS 14862:2000 595, 610, 1195, 1220, 1830 and

2440

Nominal Width mm IS 14862:2000 595, 610 and 1220

Mechanical and Physical Characteristics:

Apparent Density (Dry) Kg/m3 IS 14862:2000 > 1200

Modulus of Rupture (EMC) MPa IS 14862:2000 14 - Parallel, 8 - Perpendicular

Impact Strength J/m² - > 2100

Tensile Strength MPa ASTM D1037 20 - Parallel, 18 - Perpendicular

Screw Withdrawal Strength N IS:2380 Part

XIV > 1500 (Typical 1850)

Moisture Content (EMC) % - 12

Dry/Wet Shrinkage % - ≤ 0.19

Water absorption % - 38

Chemical Characteristics:

Alkalinity pΗ - 8 - 9

PROPERTIES UNIT STANDARD VALUES

Sound Insulation:

Acoustic Insulation (12mm thick) dB ISO 140-

3:1995 31

Heat Insulation:

Thermal Conductivity W/m-

K

ASTM C177

and ISO 8302 0.18

Fire Protection:

Combustibility - BS 476:Part

4:1970 Non-combustible

Ignitability - BS 476:Part

5:1979 ‘P’ Not Easily Ignitable

Fire Propagation Index - BS 476:Part

6:1989 I - 0.7

Surface Spread of Flame - BS 476:Part

7:1997 Class - 1

Durability:

Water Impermeability - IS 14862:2000 No Leakage

Freeze Thaw Test - IS 14862:2000 Passes 100 Cycles (2 hours cycle)

Warm Water - IS 14862:2000 Passes 56 days

PROPERTIES UNIT STANDARD VALUES

Soak Dry - IS 14862:2000 Passes 50 Cycles (2 hours cycle)

Heat Rain - IS 14862:2000 Passes 50 Cycles (2.5 hours cycle)

Biological - - No fungus growth or termite attack

Installation Photos: