If you are working in the field of civil engineering, understanding requirements for concrete production, transportation, and placement is absolutely essential. In this comprehensive guide, we will walk you through everything you need to know about this topic, from the basic concepts to practical applications on the construction site.
WHAT ARE THE REQUIREMENT FOR CONCRETE PRODUCTION, TRANSPORTATION, AND PLACEMENT
WHAT CARE REQUIRED DURING THE PRODUCTION OF CONCRETING
The care required during the production of concreting depends on various factors.
1. Based on the production of the concrete.
a) Using concrete mixtures
b) Using batching plants.
2. Depending on the weather condition i.e. is hot weather concreting or cold weather concreting.
3. Based on the time of concreting i.e. concreting done during day or night.
4. Based on the distance of batching plant from the point of placement
5. Based on the mode of transportation proposed i.e. manual / through transit mixture.
6. Based on the mode of placement of concrete i.e. by manual/ by crane / by concrete pump/placer boom / by chute etc.
7. Based on the Rate of pour required.
8. Based on the vertical drop of concrete from batching plant into transit mixture.
· Availability of tested and approved construction material in required quantity.
· The safe access for transportation of construction material to batching plant / concrete mixture.
· Availability of power supply / DG supply/diesel fuel etc for running the batching plant/mixture for the desired duration.
· Based on the past record of batching plant /mixture for production of concrete for no. of running hours / cumulative concrete production in cum., availability of spare parts to be ensured which needs frequently repair/replacement to avoid any delay during concreting.
· Availability of supporting machines like welding arrangement, skilled/unskilled crew for repairing the system.
· Proper calibration of batching plant / weigh batcher prior to starting the work. This is generally done at fixed frequencies.
· Required rate of pour.
· Ensuring safety aspects at batching plant.
· Proper illumination and communication system at batching plant for effective coordination with engineers at point of placement.
WHAT CARE REQUIRED DURING TRANSPORTATION OF CONCRETE
The care required during the transportation of concrete depends on various factors:
· Mode of transportation, i.e based on the mode of transportation proposed i.e. manual / through transit mixture.
· Based on the distance of batching plant from the point of placement.
· Based on the mode of placement of concrete i.e. by manual/ by crane / by concrete pump/placer boom / by chute etc.
· Depending on the weather condition i.e. is hot weather concreting or cold weather concreting.
· Based on the required rate of pour.
· Based on stand by the arrangement of transit mixers.
· Based on arrangement for the availability of fuel, proper air pressure in tyres condition of transit mixers.
· Based on safe access from batching plant to point of placement and necessary turning areas for transit mixers safely at the site.
· Walkie – Talkie to be provided in transit mixers for effective coordination.
· Restriction of travelling speed of loaded and empty transit mixers
· Ensure availability of water in the water tank of transit mixers for immediate cleaning after concreting is done.
· Sun protection of transit mixers and their pipes with gunny bags and ensuring the wetness of the same.
CARE REQUIRED DURING PLACEMENT OF CONCRETE
· Required consistency to be maintained from the point of production to point of the place. RPM of transit mixture should be around 4-5 RPM.
· Ensure safe access for labours / skilled workers.
· Ensure planned arrangement of the layout of the concrete pipe route.
· Ensure Sun / Rain protection for green concrete.
· Ensure proper arrangement of vibratos.
· Ensure the location of EP’s / Water stop/level of concrete etc as per drawing during concreting.
· Ensure type of finish and slope required in concrete.
· Ensuring the green cutting application within planned duration after concreting is done.
· Ensure that no cold joints should form.
· Use of cement, slurry to maintain the concrete green in case of delay in receiving the successive batch of concrete at site. Keep the check on the time taken from batching plant to the time at the point of placement w.r.t consistency and temperature.
· Avoid over vibration in concrete.
· Avoid the vibration of the initially hardened layer over which new concrete is been placed.
· Maintain all safety aspects, particularly while working in height and hazardous area.
· Ensure proper illumination and communication.
· Have leadership quality during difficult situations at site especially work done in night hrs / total power cut situation / during any accident at site / during any industrial relation problem at the site.
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Conclusion
We hope this guide on requirements for concrete production, transportation, and placement has given you a clear and practical understanding of the topic. Whether you are a student preparing for exams or a working professional on the construction site, this knowledge will serve you well. If you found this article helpful, do share it with your fellow engineers and bookmark our site for more such in-depth civil engineering resources.
❓ Frequently Asked Questions (FAQ)
What is the ideal concrete mix ratio for general construction?
For general construction purposes, a 1:2:4 mix ratio (cement:sand:aggregate) is commonly used. However, the specific ratio depends on the structural requirements and the grade of concrete specified by the design engineer.
How long does concrete take to cure completely?
Concrete typically reaches about 70% of its strength within 7 days and achieves its design strength (close to 100%) in 28 days under proper curing conditions. However, curing should continue for at least 7 to 14 days for best results.