What is the minimum quantity of ready mixed concrete that can be ordered?
As we supply concrete by Transit Mixtures which have a capacity of 6 Cubic meters, minimum quantity of concrete to be ordered for pumping is 25 Cubic meter & for Dumping is 6 Cubic meters to avoid extra charges.
What is the Maximum time allowed to unload concrete at site?
Maximum time allowed to unload concrete is half an hour for Pumping&one hour for Dumping of concrete after reaching at site. If the vehicle is detained for more than above specified time after reaching at site, retention Charges will be applied on your account for each hour of delay.
Up to what height and length, concrete can be pumped?
It depends on pump capacity. We can manage to pump concrete up to 18 floors height and horizontally 100 meters length.
Use of chemical admixtures and compressive strength?
Chemical admixtures with retarder and plasticiser are used in concrete to increase workability and strength.
What is the ideal time for placing concrete?
We suggest you to prefer concreting at early morning or at evening to avoid shrinkage cracks to an extent. Because environmental conditions conductive to high evaporation rates such as low humidity, high temperature, direct sun light and drying winds on a concrete surface cause rapid surface drying resulting in cracking.
How can a buyer of ready mixed concrete be assured of the quantity supplied?
The buyer can assure the quantity supplied by checking the weight of the vehicle in a weigh bridge before unloading and after unloading to get the net weight. Another option is to cross check with the slab area measurements.
Are there quality standards for ready mix concrete?
Yes, we are BSI (IS 4926-2003) accredited and ISO 9001:2015 Certified, which is a proof of our commitment to the best standards for our ready mix.
How do I ascertain the quality of ready mixed concrete?
Ready mixed concrete mixes are supplied only after exhaustive laboratory and plant trials.
To ensure consistent quality, incoming raw materials are regularly tested. Sampling and testing of ready mixed concrete is done every day as per Code stipulations.
At SARVANI Concrete, we invite you to visit our laboratories to witness the process.
What is the duration for which the ready mixed concrete remains usable?
During winters: Depending on the workability, the ready mixed concrete might be usable for up to four hours.
During summers: In hot weather, ready mixed concrete may start stiffening within an hour, depending on the prevailing ambient temperature. If the ready mixed concrete dries faster, sprinkling with water or curing compounds is required to prevent the cracking of the plastic surface.
What causes the shortages in supply of ready mixed concrete?
Apparent shortages in Ready Mixed Concrete are caused by:
- Miscalculation of form volume or slab thickness when actual dimensions exceed the assumed dimensions by even a fraction.
- Deflection of the formwork.
- Irregular subgrade & its settlement.
- Smaller quantities wasted or used in incidental works for large pours.
What are the specifications (dimensions & weights) of transit mixer?
The transit mixer is about 9 m long, 2.5 m wide and 3.8 m height. A truck weighs 10.50 tons when it is empty and 25 tons when it is fully loaded with concrete
How strength of concrete can be determined?
Concrete cube moulds having size 15x15x15 cms are casted with sample concrete, cured in water tank for 7 and 28 days and crushed in compressive testing machine at 7 and 28 days to measure compressive strength of concrete.
What type of formwork is required for ready mix concrete?
It is preferable to use system formwork. Also the shuttering should be proper enough to withstand pumping pressure. Any loss of material, damages to any equipment, injury or loss to human life would be at buyers’ responsibility.
How can I ensure sufficient supply of ready mixed concrete?
To ensure sufficient supply of Ready Mixed Concrete:
- Measure formwork accurately & order sufficient quantity to finish the job.
- For large pours, include an allowance of about 2% over planned dimensions to account for wastage & potential increased thicknesses.
- Towards the end of large pours, carefully measure the remaining volume & confirm the closing quantity to the RMC suppliers.