Paving Block Making Machine

Product Description

The manufacturing process for cement concrete pavement blocks includes administration, mixing, compression, hardening and drying. For cement concrete paving stones with a water-cement ratio of 0.62, a concrete mixture with a volume of 1: 2: 4 (cement: sand: chipping) can be used.

Before mixing, the concrete mixture should not be thicker than 1: 6 with respect to the combined aggregate, based on the volume of cement. The combined aggregate fineness module should be in the range 3.6-4.0. Place all ingredients in a concrete mixer and rotate the mixer for 15 minutes. Remove the prepared mixture from the mixer and consume in the next 30 minutes.

A vibrating table can be used to compress the concrete mixture into the desired size and shape. After compression, remove the block from the mold and protect it from direct sunlight and wind for 24 hours.

The blocks cured in this way are cured with water and completely moistened for 14-21 days. The water in the curing tank is changed every 3-4 days. After curing, the blocks are naturally dried and sent for use. Concrete paving stones receive good strength in the first 3 days of hardening and are guaranteed maximum strength increase in the first 10-15 days of hardening.

After curing, the block dries in the shade, so the initial shrinkage of the block is complete before it can be used for work.

Usually, the drying shrinkage is completed in 7 to 15 days, and then it can be used. Concrete tiles are similarly made using a semi-dry press of the mixture and cured for 24-36 hours. Allows to cure in the tank for 15 days. If desired, water can be sprayed to achieve maximum fitness in 15-21 days.