Comparison of Site Mix and Ready Mix Concrete
| Sr.No. | Parameters | Site Mix Concrete | Ready Mix Concrete |
| 1 | Machinery | Weigh batch mixer
(03 bag mixer RM 800) |
None required at Site
(Since Concrete is sourced from Batching Plants of 30 to 120 cum plus per hour capacity ) |
| 2 | Storage space | Required to store ingredients like Cement sand and aggregate | None
(Free movement of Transit mixer to be ensured) |
| 3 | Supervision | Need to be deployed | None |
| 4 | Consistency In Quality | Low; Better Quality Consistency can be achieved with continuous supervision | High since the Concrete is produced under factory conditions |
| 5 | Material Wastage | High – Storage is staggered | None; As wastage is on the Vendor/Supplier |
| 6 | Batch size | As small as 0.1 cum | 03 cum |
| 7 | Minimum Order quantity | Order as per requirement | 03 cum |
| 8 | Value Engineering | Possible | Not possible |
| 9 | Dependency on External Agency | None | High |
| 10 | Economy | 20% cost effective | Dearer |
| 11 | Recommendations | To be Used if you have Storage Space & in-house technical capability
Used for Low-Rise Building Construction |
Used in Sites With Logistical Constraints (like Lack of Storage space etc.,)
Large and High volume of concrete Works |
Advantages and Disadvantages of Ready Mix Concrete
Advantages:
- Concrete is batched within factory condition so the material is consistent in quality
- Concrete is supplied in transit mixer so requires less space at construction site (for stocking individual concrete ingredients)
- Material wastage at site is negligible as batched as a product
Disadvantages:
- Minimum order quantity is restricted. You need to order atleast 03 cum
- You have to depend on external agency for completing concrete works
- Costly than site mixed concrete by about 20%
Advantages and disadvantages of Site Mix Concrete
Advantages:
- With better supervision you can get an economical and quality concrete
- Small quantity of batch can be produced and need not depend on external agency for scheduling concrete works
- Design can be optimized as per strength result and you can do some value engineering and save money.
Disadvantages
- Require adequate space for stocking materials.
- Wastage of materials to be taken care and periodic reconciliation to be done.
- Site logistics to be taken care of
- Qualified staff at site required for supervising concrete production
