Introduction
How to check RMC Batching Slip very easy way.
First you will check how many kg cement, sand, aggregate, water and admixture use in concrete mix, as per your site approved design mix given by your client.
If everything is as per your design mix like M25, M30, M35 etc.
Then you will check the RMC batch slip as per IS Code 4925 : 2004.
Permissible limit as per IS 4925:
| S. No. | Type of Material | Tolerance in % |
|---|---|---|
| 1 | Cement and other cementitious materials | +/- 1% |
| 2 | Sand and Aggregates | +/- 2% |
| 3 | Water | +/- 1% |
| 4 | Admixture | +/- 3% |
If you work with Ready Mix Concrete (RMC), you must have seen something called an RMC Batch Slip. Many people get confused when they look at it for the first time.
In this blog, we will explain what a batch slip is, how to read it, and how to check if the concrete is within tolerance, using very simple language.
This guide is written so even a fresher and experienced engineer can understand it easily.
🧩 What Is an RMC Batch Slip?
An RMC Batch Slip is like a report card for concrete. It shows how much cement, sand, stone, water, and admixture the plant actually used in the concrete.
You can think of it like a recipe sheet.
🎯 What Is Tolerance in Concrete?
In concrete production, tolerance means:
“A little more or a little less material is acceptable.”
If the variation stays within limits, the concrete quality is OK.
📘 How to Read an RMC Batch Slip?
Every batch slip has 3 important values:
- Target Weight
- Actual Weight
- Difference (%)
Your job is to check if Difference % is inside tolerance.
✔ Sand & Aggregates: Within ±2% → OK
✔ Cement: Within ±1% → OK
✔ Water: Within ±1% → OK
✔ Admixture: Within ±3% → OK
⭐ Final Result: Concrete is within tolerance. Quality acceptable.
📝 Conclusion:
Reading an RMC Batch Slip is easy. Just compare the Difference % with tolerance limits:
Cement → ±1% Sand/Stone → ±2% Water → ±1% Admixture → ±3%
If everything is inside limits, the batch is good.
Thanking you
WWW.ONSITEXL.COM
0 Comments