Concrete trucks are produced to transport and mix concrete from a concrete factories or plants to the construction sites. They are charged with dry materials and water, with the mixing occurring during transport. More modern plants load the truck with the 'Ready Mixed' concrete. With this process, the material has already been mixed, and then is loaded into the truck.
The ready mix truck maintains the material's liquid state, through agitation, or turning of the drum, until delivery.) The interior of the drum on a concrete truck is fitted with a spiral blade. In one rotational direction, the concrete is pushed deeper into the drum. This is the direction the drum is rotated while the concrete is being transported to the building site. This is known as "charging" the mixer. When the drum rotates in the other direction, the Archimedes screw-type arrangement "discharges", or forces the concrete out of the drum. From there it may go onto chutes to guide the viscous concrete directly to the job site.
If the truck cannot get close enough to the site to use the chutes, the concrete may be discharged into a concrete pump connected to a flexible hose, or onto with a conveyor belt which can be extended some distance (typically ten meters). A pump provides the means to move the material to precise locations, multi-floor buildings, and other distance prohibitive locations. "Rear discharge" trucks require both a driver and a "chuteman" to guide the truck and chute back and forth to place concrete in the manner suitable to the contractor.
Newer "front discharge" trucks have controls inside the cab of the truck to allow the driver to move the chute in all directions. The first front discharge mixer was designed and built by Royal W. Sims of Holiday, Utah. A rolled concrete mixer is a major challenge to remove, as the load quickly hardens and with its load is too heavy to right.A six-axle truck has three "lift axles" -- the first two axles behind the cab (the pusher axles) and the rear-most axle (the tag axle) -- which can be lifted out of the way for off-road operation. When loaded, these axles distribute the weight of the truck. This distribution of weight is essential.
Otherwise, roads most traveled on by vehicles of this size begin to break down. As an added benefit, these axles provide the driver better control of the vehicle during transport. The lift axles are equipped with brakes, and a system that lets them actually turn with the truck during turns, allowing maneuvering that would otherwise be nearly impossible. Concrete mixers generally do not travel far from their plant, as many contractors require that the concrete be in place within 90 minutes after loading. If the truck breaks down or for some other reason the concrete hardens in the truck, workers need to enter the barrel with jackhammers; dynamite is still occasionally used to break up hardened concrete in the barrel under certain circumstances.
The Ready-Mixed Concrete Introduced
In 1913, the first load of ready-mixed concrete was delivered in Baltimore, MD. This concrete was processed at a central mixing plant and hauled to the construction site in a dump truck.
This concrete was processed at a central mixing plant and hauled to the construction site in a dump truck. In 1914, the Panama Canal opened, with three pairs of concrete locks having floors up to 20 feet thick and walls up to 60 feet thick at the base.
Two years later, Stephen Stepanian of Columbus, OH, applied for a patent for the first truck mixer. He failed to get the patent because the prototype truck was too heavy to carry a load of concrete. In 1921, the large concrete parabolic airship hangars at Orly Airport in Paris were completed. Within the next decade, trucking technology improved and ready-mixed concrete was being delivered in at least 25 cities across the United States. Some of these companies also supplied centrally mixed concrete that was delivered in dump trucks. By 1923, two of the Western Paving Company's concrete plants in Oklahoma City each produced up to 1,000 cubic yards of concrete a day.
Advancements Continue
This period also brought incredible advancements to the concrete industry in the form of automatic features; electrical, air and hydraulic controls; high-discharge equipment; materials measurement and handling; plus scale operations. High-strength concretes also were being developed, in addition to heated concrete.
Rapid developments have continued. Today, Kuhlman Corporation, and other major concrete producers, make a science out of developing just the right concrete for a particular job. They have concrete laboratories, certified quality assurance specialists, a wide range of admixtures to chose from depending upon the job's requirements, plus the latest in computerized batching and dispatching equipment.
A truck is a large vehicle used for transporting bulk goods, materials, or equipment. The word "truck" comes from the Greek "trochos", meaning "wheel." In North America, the big wheels of wagons were called trucks. When the gasoline-engine driven trucks came into fashion, these were called "motor trucks." Lorry is a term from the UK, but is only used for the medium and heavy types (see below), i.e. a van, a pickup or a Jeep would never be regarded as a "lorry." Other languages have loanwords based on these terms, such as the Malay language and the Spanish language in northern Mexico.
In Australia and New Zealand a small vehicle with an open back is called a ute (short for "utility vehicle") or a pick-up and the word "truck" is reserved for larger vehicles. In most countries, a special driver's license is required to drive any type of truck greater than 4.5 tonnes (10,000 lb).
Mixers Carried A Cubic Yard
The early truck mixers could each carry only one cubic yard of concrete apiece, although over the years capacity gradually increased to three yards per truck. Today this to 10 to 12 yards. At the same time, manufacturers were rapidly improving concrete production equipment. In 1927, the Erie Steel Construction Company of Erie, PA, developed the Aggremeter hopper which weighed and measured concrete ingredients by volume.
In 1928, Kuhlman Corporation purchased its first mixer trucks--two Barrymore concrete mixers mounted on White truck chassis. The cost was $8,391 per unit.
In 1930, horizontal-axis revolving-drum mixer trucks – similar to today's concrete mixers – were introduced by three American manufacturers. Despite the Depression, the ready-mix concrete industry took off and the National Ready Mixed Concrete Association was formed that year. By 1941, more than 700 ready-mix plants were in operation in 442 U.S. communities. Ten years later, there were an estimated 1,700 ready mix plants in over 1,300 towns and cities.
Major Truck Manufacturers
Continental Equipment Manufacturing Co., Ltd.
Corporate Headquarters: Continental Manufacturing Co., Ltd. P.O. Box 34856 Houston, Texas 77234-4856
Continental Manufacturing Co., Ltd. was formed as a Texas corporation in 1982 in Houston, TX to supply concrete mixer replacement parts for the ready mix industry. It expanded over the years, adding regional sales offices in Dallas, TX; Tallahassee & Miami, FL; Nashville, TN; Fontana, CA; Atlanta, GA; Greensboro, NC; and San Juan, PR.
The company then incorporated an entity which has become BMW Manufacturing Co., Ltd. to manufacture rear discharge concrete mixers, and the new subsidiary produced the first CBMW mixer in 1991. Through today, the company has produced over 5,000 rear discharge mixers. Its mixers range from large twelve yard trailer units to ten and one half yard standard, paver and extra axle mixers to easily maneuverable three to six yard mixers. Continental’s CBMW mixers have been recognized as some of the safest, most durable, most driver friendly, and fastest operating concrete mixers available anywhere in the world.
The CBMW Standard Mixer
The CBMW Standard mixer has earned the reputation as the best mixer in the world. Known in the ready mix industry for its strength, endurance, and speed, our Standard mixer provides the highest performance levels at any job site. Available in 8-12 yards, this mixer sets the Standard for all members of the CBMW mixer family. Normal configurations include ¼” drum, ¼” pedestals, one piece fenders, and the fastest mixer charge and discharge time in the industry.
Continental Mfg. Company, Ltd. has built a reputation for reliability, safety, dependability, and service. As an active member of TMMB and NRMCA we utilize the most current technology and information available, to ensure optimum performance and quality of our products.
Each CBMW concrete mixer is configured to each customer’s specific requirements, then built with the highest quality materials for maximum output now and in the future. Our products are manufactured to exceed industry standards, resulting in less downtime and maintenance and enhanced profits.
Standard Mixer
The CBMW Standard mixer has earned the reputation as the best mixer in the world. Known in the ready mix industry for its strength, endurance, and speed, our Standard mixer provides the highest performance levels at any job site. Available in 8-12 yards, this mixer sets the Standard for all members of the CBMW mixer family. Normal configurations include ¼” drum, ¼” pedestals, one piece fenders, and the fastest mixer charge and discharge time in the industry.
Paver Mixer
Emulating the durability and many features of the CBMW Standard mixer, the CBMW Paver Mixer was designed for maximum performance in areas with strict enforcement of paving applications. A 47” drum opening and wider chutes allow for the fastest delivery at any commercial or residential paving job.
Petebilt Trucks
Peterbilt Headquarters 1700 Woodbrook Street Denton, TX 76205
Peterbilt's conventional models, for example, feature a precision-tooled, lightweight aluminum cab, a variety of suspension systems for a smoother, quieter ride, and a three-piece, 20-bolt crossmember/gusset unit for extra frame durability. The combination of premium quality and custom manufacturing results in highly efficient, long- lasting trucks that adapt to a wide range of applications and markets. Most important, Peterbilts are the preferred truck of drivers. And fleet owners often cite their purchase of Peterbilts as a way they attract and retain quality drivers.
During the past several years, Peterbilt has introduced more new products and services than at any time in its history - trucks and sleepers that appeal to a broader range of industries, with more options, safety components and comfort features than all other trucks in their class. Additionally, customers are provided the best in aftermarket support through the Peterbilt Dealer Network and Peterbilt's TruckCare services. The latter features a full range of services that includes 24-hour roadside assistance and scheduled maintenance programs for fleets and owner/operators.
Mack Trucks
Mack Trucks, Inc. World Headquarters 2100 Mack Boulevard P.O Box M Allentown, PA. 18105-5000
The newest Mack Granite is the total package - built to tackle rock quarries, rugged job sites and rough roads. From top to bottom, we engineered all of its parts to function perfectly with one another for optimal performance. And as a result of our precision manufacturing - the high-horsepower MP engine, stronger chassis, reinforced cab, smarter electronics, ergonomic dash and plush interior features all come together to create our best-performing Mack Granite yet.
Oshkosh Trucks
Oshkosh Headquarters P.O. Box 2566 Oshkosh, WI 54903-2566
Oshkosh Corporation designs and builds the world's toughest specialty trucks and truck bodies and access equipment by working shoulder-to-shoulder with the people who use them. We make it our business to understand the rigors of our customers' jobs, and deliver vehicles to them that out-perform anything else on the market. We then back those vehicles with a 24/7 global service network. And because our company is broadly diversified, we can leverage our proprietary technologies to create powerful competitive advantages across many different markets.
This philosophy has earned Oshkosh a leadership position in every truck market in which we compete, including defense, fire and emergency, concrete placement and refuse hauling.
Reimer Concrete Trucks
RemierHeadquarters Reimer International PO Box 1168 Didsbury, Alberta, Canada T0M 0W0
The Reimer Mobile Volumetric Concrete Mixer is designed for durability, reliability, and ease of operation. From the wireless remote control to the state-the-art hydraulic system, every component of the Reimer Mobile Volumetric Concrete Mixer meets our high standards of performance. Satisfied customers all around the world will attest to the fact that Reimer produces a mixer that looks good, lasts a long time, and offers the best value on the market today.
The Reimer Mobile Volumetric Mixer allows for cost-effective on-site production of concrete. All of the components - stone, sand, cement and water - are loaded into separate compartments on one truck-mounted unit. The components are metered and mixed into fresh concrete in a special auger as the Mobile Mixer unit is being discharged. A wireless remote control allows a single operator to make adjustments to the mix and the discharge rate with ease. Do the math. One truck does the work of several truck mixers and a batch plant. One operator does the work of a batch plant operator and mixer operator. It all adds up to less expense and more profitability for your concrete business.
Kenworth Truck Company
Kenworth Truck Company P.O. Box 1000 (98083-1000) 10630 NE 38th Place Kirkland, WA 98033
Throughout its history, Kenworth has worked hard to produce quality, durable and innovative products for customers. Kenworth's success can be traced back to a philosophy established at the beginning in 1923: Build a custom truck and build it to last. Back then, it was said that Kenworth engineers weren't afraid to "get their boots muddy" as they journeyed into the field with customers to understand the demands put on their vehicles. This was a critical aspect of designing a Kenworth -- and remains so. Today, Kenworth continues to listen carefully to customer needs, then builds custom trucks that will meet those need
We are a company that is committed to providing our customers with excellent service at competitive prices.
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