Fly ash bricks are made by mixing fly ash, lime, sand, and gypsum with water in specific proportions.
The process of making fly ash bricks, based on the provided information, primarily involves the preparation and mixing of the raw materials.
Raw Material Preparation & Mixing
The raw materials used in this method are:
- Fly ash
- Lime sand
- Gypsum
- Water
These materials are manually fed into a piece of equipment known as a pan mixer. Inside the pan mixer, water is added in the required proportion to the dry mix. The purpose of this step is to achieve intimate mixing of all the components.
Raw Material Proportions
The exact quantities of each material can vary depending on the quality of the raw materials available. However, general proportions are followed to ensure the final brick quality.
Here is a typical ratio of the raw materials used:
| Raw Material | Typical Proportion (%) |
|---|---|
| Fly Ash | 60-80% |
| Lime | 10-20% |
| Gypsum | 10% |
| Sand | 10% |
It is important to note that these proportions are general guidelines and can be adjusted based on the specific characteristics and quality of the fly ash, lime, sand, and gypsum being used.
In summary, the initial stage of fly ash brick production, as described, involves the careful manual feeding and precise mixing of fly ash, lime, gypsum, and sand with water in a pan mixer to create a homogeneous mixture.
