Slip Form Paver – Types & Benefits of SlipForm Paving Technology

Slip Form Paver – Unique Technology Machines

The slipform paving is a concrete molding process where concrete is dispensed into a continuously moving mold to attain the required shape or design. This technology is applied in heavy constructions such as roads, bridges and heavy buildings. The main advantage of this technology is the creation of a continuous, “cast in Place” and almost flawless structure that has superior performance over other methods such as molds and discrete blocks.

Slip Form PaverOther Benefits of Slipform Paving

  • They are fast, reliable and produce a much better looking surface that is equally strong.
  • Precise construction is achieved,
  • Reduction in the cost of construction due to high mechanization

Types of slip form pavers Available

Various types of slip form pavers are available in the market depending on the output specifications of each model. Manufacturers of these equipments also classify their machines based on the individual features unique to the equipment. Some of the different functions of these equipments may include;

  • Pavers able to perform convectional paving, offset paving, and custom applications
  • Able to perform automatic width adjustments withoutunnecessary adjustments
  • Half width pavers designed for construction of busy streets and smaller roads with limited supply of concrete, these are also used where larger machines cannot be used.
  • Heavy duty pavers used to recarpet massive projects such as highways, airports, and other heavy jobs. These are sturdily built to create pavements of up to 50cm thick.
  • The slip form pavers may also be specially designed to manufacture continuous kerbs that are strong and appealing.

Technology Involved In Manufacturing Slip Form Pavers

The slip form paving technology is based on the rapid setting properties of concrete material. The technology works on a balance between the quick settings of the concrete and remains workable enough to be molded into the form. This balance is crucial to ensure the final structure is strong and durable.

How the Slip Form Paver Works

The concrete used in this system of paving is very similar to that used in convectional paving systems. It must have a good and uniform consistency having a slump of approximately two inches. This concrete is deposited into the hopper box from where the machine evenly distributes the material across the paving surface. The paver machine helps in achievement of a homogenousmix and compaction through a system of hydraulic or electric vibrators, while the mold helps in forming the slab to the desired thickness and width.

Demandof Slip Form Pavers

The global demand for slip form paving technology continues to increase as more and more pavement roads are required. The market for concrete paving machines is seen to be growing at a rate of 15-20% every year and industry analysts fore see a more rapid growth by the end of year 2017.This is boosted by increasing road networks in various countries ,time bound projects requiring very high efficiency and expansion projects of airports,and residential areas. In India, the government’s plan to construct over 20 kilometers per day of road has created a sufficient demand-pull for these equipments. Some of the global leaders in slipform paver manufacturing includes Apollo Inffratech.

Concrete Block Making Machines – a Boon for the Construction Industry

Concrete block making technology has come a long way from its invention by the ancient Romans. Concrete blocks were initially made manually where each mason would make blocks through special molds designed with the required dimensions. With the slow pace and enormous energy demand for these blocks, there was need for faster manufacturing which led to development of the concrete block making machines.

Operation Technology

The basic technology of the concrete block machine involves molding the concrete and allowing them to set, and cure to form a concrete block. The production process is therefore in a sequence of 4 processes which are mixing, molding, curing and cubing.

Block Design

The shape and design of the concrete block has a great effect on the manufacturing process of these blocks.  In development of new block design careful consideration must be made to retain the cost of production to a minimum.  Complex molding directly translatesto increased production costs. The block making machines are highly efficient in operation and precision to ensure cost of production remains at optimum level. The current machines arefittedwith accurate instruments and timers for profitable operations.

Performance Features

Some importance features to consider in the concrete block making machines can be described as:

  • Machinery capacity, this is the output of the machine per hour. Thisoutput varies depending on the machine size and model with some equipment going up to 40 blocks per cycle.
  • Block making machines are sturdyand rigidly made with minimum vibration to achieve maximum block quality
  • The size of the molding area. This may vary depending on the regulations required from different countries. The size of the molding area can be up to 600 mm *600 mm
  • Depth of block is also variable but can range from 50mm up to 300 mm
  • The power consumption efficiency of the machine.
  • They are fitted with powerful hydraulic drive motor of up to 5 Hp for maximum compression

Concrete Block Making Machines

Advancement in machine technology has led to addition of other features such as vibration motors able to deliver a 0.5 hp, and up to 3000 vibrations per minute. More advanced models are equipped with a travel motor for easier placement of molded blocks.

User Friendliness and Durability

Block making machine is made to be user friendly and easy to operate, this is important for easy training of users on site. The durability is guaranteed through usage of strong steel frame work able to resist the heavy workload on the equipment.

Innovations in the concrete block manufacturing process has led to development of machines that have the ability to manufacture hollow blocks of equal strength characteristics  as the solid blocks. This translates to material efficiency and huge savings to the total cost of materials.

Conclusion

There has been rapid advancement in the concrete block making technology. Block making machines are able to deliver high quality concrete blocks over a short period. The machines are developed to withstand the heavy concrete workload without damage to the equipment. The concrete machines come in various models, and sizes vary depending on the desired throughput.