Cement Carrier

cement carrier

[si′ment ‚kar·ē·ər]
(naval architecture)
A special ship designed to carry bulk cement; usually fitted with an air-mixing system to allow pumping dry cement powder through pipes to unload or load the ship.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Cement Carrier


a transport vehicle for bulk cement. Cement carriers include motor vehicles, railroad cars, and river and oceangoing vessels. They may be equipped with horizontal or vertical tanks, and the cement feed from the tanks may be pneumatic (most common) or by gravity.

Motor vehicles are used to transport cement over distances up to 150 km. Those used in the USSR have load capacities of 8, 13.5, and 22 tons. The carrier consists of a tank on a semitrailer. Mounted inside the tank are chutes that feed air into the cement; the chutes consist of a metal trough, a porous partition made of cotton or Lavsan, and a metal incline. An air compressor is mounted on the chassis of the tractor. The carriers are usually loaded by gravity, but vacuum loading may also be used. Unloading is accomplished by starting the air compressor; air then passes through the partition of the chute into the cement in fine jets. The aerated cement flows like a liquid through the chutes (which are inclined at an angle of 6°) to a feed nozzle. Compressed air feeds the cement through the nozzle to a tower, which may be up to 25 m high.

Equipment used to transport cement by railroad over distances up to 1,000 km includes hopper cars with a load capacity of 60 tons, tank cars with a load capacity of 58 tons, and platform cars, on which several tanks may be mounted.

Cement-carrying ships are used in cases where the cement factory is located near waterways. The load capacities of such ships may reach 5,000 tons. Transportation by ship is also used for cement loaded in containers.


Pnevmotransportnye ustanovki: Spravochnik. Leningrad, 1969.
Matveev, A. I. Sostoianie i perspektivy razvitiia oborudovaniia dliasistem pnevmotransporta. Moscow, 1975.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
There are only six such vessels in service, comprising a cement carrier, two product tankers and three gas ships that are not LNG carriers.
With the conversion of the Challenger to a barge, the oldest operating powered vessel on the lakes is now another cement carrier: the 1942-built steamer Alpena, in service for the Lafarge interests.
Cement carrier Cemfjord went down with skipper Pawel Chruscinski and seven crew on Saturday.
The 83-metre bulk cement carrier, which had been bound for Runcorn, Cheshire, on the west coast of the UK, sank below the water earlier this afternoon.
The 272ft (83m) bulk cement carrier had been bound for Runcorn, Cheshire, on the west coast of the UK.
Lifeboatmen involved in the operation fear the men's bodies remain trapped inside tb h the 272ft cement carrier. They said it appeared the boat sank so fast in appalling weather the captain and crew did not even have a chance to send out a mayday.
Authorities said on Monday that the search for the seven Polish crew members and one Filipino of the Cyprus-registered cement carrier Cemfjord has been called off.
Cemfjord, an 83meter long cement carrier, was on its way to deliver its cargo from Denmark to Runcorn in the northwest English coast when it overturned off the town of Wick.
Four lifeboats, two rescue helicopters and other ships were searching for the crew of the Cypriot-registered cement carrier Cemfjord, whose upturned hull was seen from a ferry in the Pentland Firth.
The Company expects a drop in profits for the fiscal year ending March 31, 2011 due to a loss associated with a change in the full load draft to secure the guaranteed deadweight capacity for a carrier (contra-rotating propeller 7900-dwt cement carrier), which was built by its subsidiary, The Hakodate Dock Co., Ltd.
And lifeboatmen involved in the operation fear the eight men's bodies remain trapped inside the 272ft cement carrier Cemfjord.