How to Start a Concrete Block Factory in Syria? Site, Mix and Machine

How to start a concrete block factory in Syria comes down to five gates you have to pass in order: site and curing yard area, power capacity, raw materials and mix design, machine selection, and curing with pallet turnover. Skip one gate and the plant stalls at that gate, not at the machine. A QST8-15 draws 44.9 kW, weighs 14 t and holds a 15 to 23 second cycle; on its nameplate it produces 90,000 standard bricks in an 8 hour shift. Whether that machine fits your site is settled by the five checks below, and by nothing in a brochure.

1. Gate one: site and curing yard area

The machine is the small part of the site. A QST1200 or QST1500 main unit measures 11,500 x 4,550 x 2,800 mm and a QST1800 measures 15,500 x 5,500 x 3,200 mm, while the low-level stacker alone takes 12,000 x 3,000 mm. Fix the floor around the machine before the machine arrives, because moving concrete, cables and drainage on paper is cheaper than moving them after commissioning.

The curing yard decides the land bill. One QST8-15 pallet is 980 x 860 x 22 mm, about 0.84 square metres of floor per board. Laid out one deep, 1,000 pallets need roughly 850 square metres; stacked four to six high they fit in about 150 to 210 square metres of clear floor, plus walkways and a forklift lane. A yard that is too small turns a full line into a part time machine, and no cycle time repairs that. Before we size the yard, tell us the unloading port, the site voltage and frequency, the block types you sell and the delivery port.

2. Gate two: power capacity

Power is the gate that stops most projects after the concrete is poured. A QT4-15 needs 22.9 kW installed. A QST8-15 line needs 44.9 kW and a QST1800 line needs 104 kW. Our machines are built for 380 V / 50 Hz, and the drive is not one steady load: the vibration motor starts and stops with every cycle, so the supply has to carry peaks, not only the average.

Do not size the transformer or the generator from the nameplate alone. Send us the supply you actually have at the site, whether it is the grid, a generator or both, and the frequency. If the grid is weak, the honest option is a smaller machine that finishes its cycle, not a large line that trips on start. A QST6-15 line at 34.4 kW is the middle step between the two.

3. Gate three: raw materials and mix

Mix design is where the cement bill is written. Keep the water to cement ratio in the 0.35 to 0.45 band, with binder at 200 or 260 kg per m3 and cement usually between 6% and 12% of the dry mix. Every 1% of trapped air left in the block costs about 5% of compressive strength, and plants commonly add around 30 kg of cement per m3 to compensate for it. Compaction is cheaper than cement.

The mixer also sets a ceiling on your aggregate. Our twin-shaft mixers accept 80 mm pebble or 60 mm crushed stone, so oversize rock has to be screened before it reaches the hopper. Tell us what your quarry or supplier delivers and in what gradation, and we will match the mixer and the mould to it. We do not assume a local source. We ask.

4. Gate four: choose the machine for the demand

The two ends of the choice look like this. A QT4-15 runs at 22.9 kW and weighs 6,200 kg, with 25 MPa hydraulic pressure, 68 kN of vibration force, an 850 x 560 x 20 mm pallet and a 15 to 20 second cycle. A QST8-15 runs at 44.9 kW, weighs 14 t, holds 31.5 MPa and 95 kN, and uses a heavier 980 x 860 x 22 mm pallet on a 15 to 23 second cycle, rated at 90,000 standard bricks in an 8 hour shift.

Two rules keep that decision honest. First, a thicker pallet is not decoration: 22 mm steel and 31.5 MPa go together, and a 20 mm board under a 14 t machine flexes and wears faster. Second, discount the nameplate. Size the plant on 70% to 80% of rated output, because mix changes, mould changes and short stops take the rest. A QST1800 reaches 104 kW, 34 t and 280 kN when the volume truly exists.

5. Gate five: curing and pallet turnover

Pallets are the largest consumable in a block plant, and the curing yard is a rotating fleet, not a parking lot. A QST8-15 at a 20 second cycle completes about 1,400 cycles in an 8 hour shift, so a line that keeps every block on its board for a full week would need roughly 10,000 pallets. In practice blocks are stacked, cured and stripped of pallets early, and the boards return to the machine.

Plan the strength nodes, not the calendar. Test at 7 days and at 28 days, and keep the yard damp and shaded in the first days, because early strength comes from hydration. If part of the cement is replaced with a filler such as fly ash, wet curing is not optional. Pallet count, yard area and curing method have to be fixed together, before the first order is placed.

6. Investment order and the first 90 days

Money follows the gates, not the equipment list. Equipment is normally 40% to 55% of total plant investment, and shipping, duty and inland transport commonly add 15% to 40% on top of the machine price. That leaves the civil works, the power connection and the pallets, which is exactly where underfunded projects run out of budget before the first block is pressed. Most stalled projects are stalled by power and pallets, not by the machine.

Sequence the money the way the plant runs: site and power first, then the machine, then pallets and the curing yard, then the stacker. Two-shift operation gives about 500 shifts a year, which is what makes an automatic line worthwhile; when a line removes 12 to 16 operators a day, payback commonly lands between 12 and 30 months. Send us the block types, raw materials, pallet choice, voltage and destination port, and we will quote the configuration instead of a number.