Frequently Asked Questions

Two classes of fly ash are defined by ASTM C618: Class F fly ash and Class C fly ash. The chief difference between these classes is the amount of calcium, silica, alumina, and iron content in the ash.

Fly ash can be used as prime material in many cement-based products, such as poured concrete, concrete block, and brick. One of the most common uses of fly ash is in Portland cement concrete pavement or PCC pavement.

Fly ash reacts with lime in the presence of moisture to form calcium silicate hydrate which is the binder material. The raw mix is molded in the molding press/machine, pressed under a pressure into bricks. The bricks are then with drawn from the molding machine and they are air dried under the sun and kept for 1 day.

Fly ash bricks are hi-tech well-improved quality bricks used for construction of brick masonry structures. They are used as replacement for normal clay bricks and has better properties than it. Fly ash bricks competitive in comparison to the conventional clay bricks and provide enormous indirect benefits.

Fly ash concrete has better workability and pumpability. It also hydrates more slowly, which reduces the heat of hydration—critical to reducing cracking in mass concrete placements. All of this makes fly ash concrete more durable than plain portland cement concrete. In addition, concrete with fly ash costs less, because fly ash is typically cheaper than cement.

Fly ash is commonly used in concrete in replacements that are ranging from 0 to 30% by mass of total cementitious material. A high percentage of the cement within concrete can be replaced by Fly Ash without adversely affecting concrete properties.

BHARATMACH (BHARAT Hydraulic) block making machines are designed to make Hydraulic Technology OR Vibro. compaction hollow blocks, Fly Ash Bricks, interlocking blocks, pavers, a variety of special products and custom made-designs. BHARATMACH interchangeable moulds are designed to meet any customers need and specifications.

1. Same number of Fly Ash Bricks will cover more area than clay bricks. Fly Ash Bricks have High Fire Insulation.

2. Due to high strength of Fly Ash Bricks, practically no breakage during transport of Fly Ash Bricks and use.

3. Due to uniform size of Fly Ash Bricks mortar required for joints and plaster requirement reduces almost by 50%.

4. Due to lower water penetration seepage of water through bricks is considerably reduced.

5. Gypsum plaster can be directly applied on these Fly Ash Bricks without a backing coat of lime plaster.

6. These Fly Ash Bricks do not require soaking in water for 24 hours. Sprinkling of water before use is enough.

natural curing can be upto 15 days long. During monsoons its not possible. there are 3 main methods of increasing speed of curing and have it insulated from weather conditions so that you have bricks 24 x 7 x 365 all through the year. The land requirement for storing is also negligible compared to natural curing where you need large piece of land. The first method is mist curing where saturated steam is let in teh chamber this brings the curing time from 15 days to 3 days. The second method is using high power press and stack the green bricks in a chamber designed to have perfect air flow to use the heat emanating from the exothermic reaction inside the brick to help them cure in 24 - 30 hours. The third method is using an autoclave wherein low pressure steam is used this method is fastest and curing time can be as low as 8 hours.

Buying a machine that makes bricks is a great investment choice for cost-conscious home builders as well as fulltime sellers of building blocks. Brick maker machines have revolutionized the age old process of making bricks by hand – where clay was mixed with water, cast in the molds, dried, and then fired in the kiln. Although the process largely remains the same, humans now use semi-automatic machines such as fly ash brick making machines, hydraulic brick making machines, etc. to manufacture building bricks and blocks. With the market awash with various types of machines that make bricks, you may not be quite sure of the right choice of a brick maker for your project. Here are the key considerations when purchasing a brick maker machine:

1. Scale of operations: When shopping for a machine for making blocks, you should keep in mind the production capacity of the appliance. If, for example, you plan to buy a brick maker machine to create bricks for your house building project, a small scale apparatus will serve your purpose. On the other hand, you should go for a large scale brick maker machine if your plan is to start a block making business.

2. Quality of machine: The type of material used to construct a machine usually determines the quality of the apparatus. It is important, therefore, to ensure that your machine of choice is built with high quality materials that can stand the test of time while reliably producing high quality bricks and blocks. You should particularly check the quality of hydraulic cylinder, pump and valve since they have great effects on the machine’s hydraulic system. Be sure to buy a brick making machine whose forming molds have been dealt with carbonization as these apparatus have longer service life and are more efficient in the long run. Avoid machines whose forming molds are made from ordinary steel without any treatment as their quality cannot be ascertained.

3. Styles of bricks: Different types of brick making machines produce diverse types of bricks, such as hollow bricks, fly ash bricks, concrete bricks, interlocking bricks, cement bricks, solid bricks, etc. It is important to ascertain in advance that your brick making machine of choice can produce the sort of bricks or blocks you require for your project. Ask your dealer as many questions as possible about the capabilities of each of your prospective machine to avoid disappointments.

4. Levels of autonomy: An autonomous machine is one that is designed and engineered to adapt to changing surroundings on its own, and perform its tasks for extended periods of time without human intervention. Like most other apparatus, machines that make bricks and blocks have various levels of autonomy. It is advisable to pick a machine that enjoys high levels of independence, especially if you need to produce large volumes of bricks.

5. Ease of maintenance: When shopping for a machine, most people consider its features, ease of use, and workmanship, but they tend to overlook a key factor: serviceability. Like any other equipment, a brick making machine requires routine maintenance to operate efficiently and with longevity. You should therefore consider a machine’s ease of maintenance as well as the availability of spare parts.

As the particles are pressed to closer, the vibration will excite all the particles so that they shuffle into place together. As the particles vibrate, the volume is reduced; this compaction is more uniform from outside inward from all the surface, not just the top. Vibration greatly assists in compaction but also helps to speed up the compaction process. The increase in brick-making results in a faster daily target achievements. More connection allow for better cohesion & adhesive forces when de-moulding. Typically, even without a chemical agent added, brick formations will hold together from the moisture content alone. This shows how well the brick will be bonded when cement is added. Cement in the water will create micro-joins between the particles at the connection points (following the water lattice structure present). Thus when more connections can be made, the stronger the bond will be; additionally this means less void space and therefore less wasted cement to fill the spaces.

There are two types of paver blocks:There are two types of paver blocks:

1. Concrete Paving Block

Concrete blocks are mass manufactured to standard sizes. Hence, they can be easily interchanged. A typical concrete block has two surfaces - one is smooth, and the other is a rough surface. The concrete paving blocks are most suitable for heavy-duty applications, able to support substantial loads and resist shearing and braking forces. The concrete blocks come in various colors. The colors typically come from metallic oxides. However, there is a possibility of these colors to fade away. Hence one needs to be very careful while choosing the color of the block. Concrete paving blocks are the most preferred choice for laying of pavements, driveways, etc.

2. Clay Paving Blocks

Clay paving blocks are also called bricks or cobbles. These blocks are generally available as typical, rectangular brick-shaped. Although custom shapes can be made for specific projects. Unlike the concrete paving blocks, either side of clay paving blocks can be used. So both sides are interchangeable. Clay blocks are available in natural color only; hence the possibility of color fading is not there in these blocks. These blocks are mostly used for walls or pillars.

There are four generic shapes of paver blocks corresponding to the four types of blocks:

1. Type A: Paver blocks with plain vertical faces, which do not interlock into each other when paved in any pattern,
2. Type B: Paver blocks with alternating plain and curved/corrugated vertical faces, which lock into each other along the curve/corrugated faces, when paved in any pattern,
3. Type C: Paver blocks having all faces curved or corrugated, which lock into each other along with all the vertical faces when paved in any pattern and
4. Type D: 'L' and 'X' shaped paver blocks that have all faces curved or corrugated and which lock into each other along with all the vertical faces when paved in any pattern.

1. Paver blocks do not need special maintenance as compared to concrete or asphalt surfaces. A simple water washing can help keep the blocks clean and bright.
2. Paver blocks are very durable, and if they are adequately interlocked, they can easily last for about 20 years. Paver blocks can withstand hefty vehicular load as well.
3. Paver blocks are available in different shapes and colors, making it very versatile. These blocks can be used at residential as well as commercial premises.
4. Paver blocks are slip-resistant and skid resistant.
5. Paver blocks can be used in any weather conditions.
6. These paver blocks are very easy to install and do not need any special equipment for its installation.
7. The most important advantage of paver blocks is that they can be easily replaced. If one of the blocks gets damaged, it can be easily removed and replaced with another one.
   
   With all these advantages, paver blocks are the most sort after solution for exterior pavement or driveways. These paver blocks not only make the exterior pathways look clean and neat but are also safe for walking on. Paver blocks are a definite solution for a low maintenance pathway.

Paver Blocks Manufacturing Process Given Below :-

Land Requirement :- 800 Square Meter to 2000 Square Meter.

interlocking Tile Plant Machines Requirement :-

New interlocking Tile Plant Machines Requirement for Basic machines Given Below. as per our experience in the paving Block industry. We are trying to provide you best knowledge for making precast Tiles and other products.

• 2 Vibrating Table Machines ( 1 for Top Layer vibration 2nd for Base concrete layer Vibration.
• 1 Pan style Concrete Mixture ( for color layer mixing or Top layer mixing ).
• 1 Heavy Duty Concrete mixture ( Recommended PAN Style Mixture Machine ).
• 2-4 Supporting Table for Concrete Mix
• Air Compressor ( for spraying Coating the Tiles and paver surface ).
• PVC Rubber Paver Moulds ( or you can go for Plastic Paver Moulds its depend on you. We recommend PVC rubber Paver Mould for best result ). Quantity of the PVC Rubber Paver Moulds (Rubber paver moulds ) / Plastic paver moulds Depends on your per day production requirement.
• Minimum Land for new paving block plant requirement.

Basic need of Machines for new paver block plant requirement provide above. Always Use PVC Rubber Paver Moulds for High Glossy Finishing. Our High Quality PVC Paver Moulds Easy to De-mould.

In general terms, the word cement refers to any kind of binder that tightly holds other materials together. Concrete, on the other hand, is a mixture of materials like sand, gravel, and small rocks combined with any type of cement and water. The concoction is then allowed to dry and harden. Basically, concrete is the stone-like structure formed after cement and other materials are mixed together. The cement is just a part of the recipe.

Cement has been used as a binder of materiel for millenia. No one knows for sure who first came up with the idea to use a cement substance to bind materials together to make concrete, bricks, and other building materials. The process can be traced back to Ancient Macedonia, but was more widely popularized during the Roman Empire. Early forms of cement used things like lime and pozzolana, a type of volcanic ash. The Romans were able to produce massive structures like the Pantheon and the Roman aqueducts using this formula.

Currently, cement comes in two forms: Hydraulic and Non-Hydraulic. Hydraulic cement refers to any cement that uses water to begin a chemical reaction that hardens the mixture and, when fully formed, creates a water resistant product. This reaction is independent of the water content of the mixture so allows for the material to harden even underwater. This makes it a very versatile construction material. Most all cements used today are hydraulic cements. Non-hydraulic cement uses materials that do not harden when exposed to water. While this type is much cheaper than hydraulic cement, the problems of long drying times, combined with the inability to use it in wet environments makes it a poor choice in most applications. The most common type of modern cement is portland cement (sometimes referred to as OPC for “Ordinary Portland Cement”). This type of cement is typically made by grinding small rock-like bits of sintered limestone and aluminosilicate minerals into a very fine powder. Its fast drying times combined with its higher compression strength compared to other cements, makes it a great choice for use in concrete, mortar, grout, and stucco.

Concrete is a mixture of cement, water, and aggregates. Aggregates make up approximately 60-75% of the mixture and cement and water make up the rest. Aggregates are usually inert course materials like gravel, crushed stone, sand, or recycled concrete. The type of aggregate selected depends on the application of the concrete.
Given that concrete starts out as a semi-liquid, has great weather proof properties, and high strength, its applications for use in construction are almost endless. The benefits of concrete include its durability, fire-resistance, low maintenance, energy efficiency and environmental friendliness. In fact, concrete is the most widely used man made material on earth.

It’s easy to see why some people would use the terms cement and concrete interchangeably. One is a main ingredient in the other.