Buildworld offers an assortment of brands that manufacture premium concrete mixers capable of delivering high quality results.
Big construction sites thrive on large amounts of concrete supply—produced efficiently and with great precision and consistency with the help of Concrete Mixers informally known as Cement Mixers—programmed to blend aggregates with water and cement generating concrete in a continuous stream or in planned batches, depending on the type of concrete mixer engaged for production. Concrete Mixers first arrived on the scene in the second decade of the 20th century, primarily to overcome the inconsistencies and rate of production challenges posed by the horse-drawn mixers.
The successful paradigm of blades perpetually rotating inside the admixture receptacle has, over the years, undergone dynamic advancements leading to the arrival of Batch Concrete Mixers and Continuous Mixers to fulfill copious amounts of concrete requirements with varying customizations at any time. Batch Concrete Mixers churn out concrete in cycles: mixing one batch of ingredients at a time followed by subsequent loops of feeding ingredients and releases of concrete batches.
Double conical frustum shaped—Drum Mixers, function on the principle of rotational axis with 3 variations in their design. First: Tilting Drum Mixers, although capable of inclines at any angle, perform optimal mixing, when positioned horizontal, with the blades lifting the ingredients and rotating them against the diameter of the drum. Ideal for mixing large sized aggregates, the tilted variety tend to collect concrete at the bottom, therefore requiring pre-mixed cement mortar being fed into the drum before the first batch of concrete to prevent the concrete from clogging at the bottom. Predisposed to horizontal inclination—the Non-Tilting Drum Mixers are good for mixing aggregates smaller than 7.5cm in size—discharging mixtures takes a while, due to its fixed horizontal position, which makes it a slow-paced machine to work with and more suitable for smaller construction jobs. Low on operational and maintenance cost makes the Reversing Drum Mixers a favourite for budget oriented projects. Its non-tilting framework combined with openings at opposite ends of the drum for receiving and discharging material allows tremendous scope for quick assignments.
Ingredients mixed by a set of rotating blades inside a circular pan is the common formulation of Pan Mixers, which come as either stationary pans with moving blades or as star-shaped stationary blades with a revolving pan, and are regarded as highly efficient among batch mixers. The revolving blades, in stationary pans, in addition to mixing, act as scrapers to prevent the concrete from collecting on the sides of the pan with their adjustable settings; a scraper blade is specifically positioned to whip the material lodged in the sides of the pan into the deliverable mixture. Identical in both designs is the discharge route—a hole in the centre of the pan—for collecting the concrete mixture.
Continuous Mixers, unlike batch mixing, have a series of built in mechanisms to facilitate uninterrupted flow of material, fed through screw feeders, into the drum for mixing; the constant moving screw-type blades mix the admixture in the on-tilting drums; and a concurrent discharge mechanism releases: ready to consume concrete mixture. Large-scale projects are fertile grounds for prolific concrete production where continuous mixers thrive and are in constant demand.
In addition to the above mentioned mixers mobile mixers such as truck mixers and volumetric mixers possess the advantage of preparing concrete while in transit where the truck mixers have better accuracy on their batch mix, and better admixture quality, while the volumetric mixers are economical, leave very little waste in comparison to truck mixers and they are easier to clean-up. Precast forms and block making witness the extensive use of conveyor belt mixers alongside concrete mixers with mechanical hopper.
The concrete mixing process is a highly calibrated affair with a variety of mixers relying on diverse methodology to fulfil the ongoing demand for producing better concrete.