Future technology for large projects in India

1. Smart Concrete Sensors
(Temperature and Strength Monitoring)
S.Sudha Velan B.E (Civil)

3. Concrete Sensors
• Concrete Sensors embedded into concrete works with the
easy-to-use software to provide real-time data on the concrete
as it cures and dries.
• Concrete sensors enable you to monitor the job site strength
of your concrete in real-time, helping you to move faster.
• Remove formwork sooner.
• Stress post-tensioned slabs earlier.

5. • Features:
• Temperature Range: -30° to 80°C (-22° to 176°F)
• Accuracy: ±1°C
• Resolution: ±0.5°C
• Dimension: 1.5″ x 1.5″ x 0.5″
• Thermocouple Length: 16″
• iOS and Android Compatible
• Provides Data For:
• Maturity Testing
• Curing Condition Optimization
• Heating and Cooling Processes
• On-Site Quality Control
• Strength Estimation
• Mix Design Optimization

10. • Concrete Monitoring Made Simple
• Monitor the concrete curing process continuously and take
data-based decisions for improved scheduling by reducing
redundant curing times.
• Optimize Formwork Removal Time
• Make data-based decisions and improve work schedule on-
site.
• Cut down redundant waiting time while ensuring great product
quality.
• Automatic Documentation
• All data is automatically saved as reports online to be shared,
exported or downloaded for easy digital documentation and
quality assurance.

11. Tag Sensor - Activate the sensor & tag each one in your smart sensor
concrete app by project .

12. Install & Pour – Secure the sensor to the reinforcement steel and pour
the concrete.

13. View Result – Open the smart concrete sensor app and view the
concrete strength & temperature data in real-time or remotely using
Smart Hub.

15. • Significance and Use
• To estimate the in-place strength of concrete to allow the start
of critical construction activities such as:
• removal of formwork and reshoring;
• post-tensioning of tendons;
• termination of cold weather protection;
• opening of roadways to traffic.

17. Scope
• This practice provides a procedure for estimating concrete
strength by means of the maturity method. The maturity index
is expressed either in terms of the temperature-time factor or
in terms of the equivalent age at a specified temperature.
• This practice requires establishing the strength-maturity
relationship of the concrete mixture in the laboratory and
recording the temperature history of the concrete for which
strength is to be estimated.

19. Compared to the destructive (Cube Testing)method
where you break the cylinders or beams, concrete
maturity is:
• Easier
• Safer
• Faster
• More Reliable
• More Accurate
• Cost Effective

20. • Why Traditional Concrete Strength Testing Doesn’t Work
• The most used method to monitor the strength of concrete is break testing
(breaking specimens that are poured and cured in the field subjected to the same
curing conditions as for the concrete structure). Sometimes, cast-in-place concrete
specimens are prepared by embedding plastic molds in the slab to achieve a better
representation of real concrete strength.
• This method (cube testing ) is not efficient for two reasons:
1. Results are not available right away (they must first be sent to a laboratory
for analysis).
2. Results are not accurate, as only one specimen is usually tested.

21. Reduce the casting of cube samples by 70% by using Concrete sensors

23. • Your jobsite concrete typically cures faster than your concrete
cylinders.
• The cylinder (cube) temperatures are not reflecting what is happening with the
jobsite concrete.

32. • Curing temperature can have a dramatic impact on how quickly your
concrete cures.
• Concrete cylinders (cubes) have a smaller volume than the field
concrete, they may cure at lower temperatures and are not always
good indicators of field concrete strength.

33. COLD WEATHER JOBSITE TEMPERATURE
MONITORING
Site team to manage the curing process in such a way that the internal
concrete curing temperature stays within certain thresholds. In cold weather
conditions the concrete temperature should not drop below 40°F for the
protection period. Concrete sensors help ensure constant monitoring of the
jobsite temperature, which is essential, especially during the colder night
hours.

34. RELATIVE HUMIDITY MONITORING
you can track the relative humidity in your concrete slab,
helping you stay on top of flooring and scheduling

40. MASS CONCRETE TEMPERATURE DIFFERENTIAL
MONITORING
Site Team to manage the curing process for extra thick mass concrete as defined
(typically 3+ feet) in such a way to prevent the temperature differential from
exceeding 35°F from center to surface and prevent the center's maximum
temperature from exceeding 160°F. Often, thermal control plans are used as
guidelines for contractors to ensure proper curing. Concrete sensors monitor
concrete temperature 24/7 and help with compliance to thermal control plans and

41. Smart concrete Sensor (14 Nos ) were fixed to monitor 2500 CUM of mass
concrete foundation at Dr BR Ambedkar statue Mumbai. (450 feet height )

46. Thanks & Regards
S.Sudha Velan