gravel

(redirected from gravelly)
Also found in: Dictionary, Thesaurus, Medical.

gravel,

particles of rock, i.e., stones and pebbles, usually round in form and intermediate in size between sand grains and boulders. Gravel is composed of various kinds of rock, the most common constituent being the mineral quartz. Deposits of gravel are formed as a result of the weathering of rocks and the erosive and concentrating action of rivers and waves. Sometimes gravel becomes consolidated into the sedimentary rock called conglomerate. Gravel is used extensively in building roads and in making concrete. For road building it is crushed into angular particles of uniform size. One or more layers of gravel underlie the road surface. A small percentage of clay must be present to act as a binder when gravel is used in macadam for road surfaces. When used as a coarse aggregate for concreteconcrete,
structural masonry material made by mixing broken stone or gravel with sand, cement, and water and allowing the mixture to harden into a solid mass. The cement is the chemically active element, or matrix; the sand and stone are the inert elements, or aggregate.
..... Click the link for more information.
, gravel must be clean and free from clay and organic matter. Commercially, it is classified according to the size of the particles. In areas where natural deposits are inadequate, gravel is produced by quarrying and crushing durable rocks, such as sandstone, limestone, or basalt.

Gravel

Small pieces of stone that are of varying sizes; used as an ingredient in concrete.

Gravel

 

a loose conglomeration of pebbles. Cemented gravel is one type of conglomerate. According to the petro-graphical composition of the pebbles, gravel may be classified as polymictal (pebbles of different composition), oligomictal (pebbles of two or three rocks), or monomictal (homogenous pebbles). The petrographical composition, shape, arrangement, and location of pebbles in a pebble incline determine the genetic type of gravel and establish the position of material in eroded places as well as the direction in which it has been washed out. Gravel is used as a construction material, generally in road building.


Gravel

 

loose rock consisting of more or less rounded rock fragments and (less frequently) various minerals with a diameter of 1–10 mm (2–20 mm, according to other information). Gravel may be classified by size as fine (1–2.5 mm), medium (2.5–5mm) and coarse (5–10 mm). It is classified by origin as fluvial, lacustrine, marine, and glacial. Gravel is used as a construction material, a coarse concrete aggregate, and a road-building material. Cemented gravel is called grit.

gravel

[′grav·əl]
(geology)
A loose or unconsolidated deposit of rounded pebbles, cobbles, or boulders.

gravel

A coarse granular aggregate, larger than sand; formed either naturally or by crushing rock; will pass a 76.1-mm (3-in.) sieve and be retained on a 4.76-mm (No. 4) sieve.

gravel

1. an unconsolidated mixture of rock fragments that is coarser than sand
2. Geology a mixture of rock fragments with diameters in the range 4--76 mm
3. Pathol small rough calculi in the kidneys or bladder
References in periodicals archive ?
HEADING NORTH Snowy White, second from the right, is heading to Newcastle with a new album in the bag GRAVELLY Dan McCafferty is still grinding them out for Nazareth
I drop my aitches, I suffer with an asthma-related condition that means I speak with a gravelly voice," the Sun quoted him as saying.
The excavation at Gravelly Guy took place during the 1980s and several interim reports have appeared since; but it is only with the publication of this substantial and excellently produced volume that k is possible to fully assess the significance of the project.
Broken down to their basic components, these 14 tracks are deceptively simple: slow-moving, skittish electronic rhythm beds, tar-pit bubble bass lines, and gravelly vocals.
Giving brief answers in a low, gravelly voice, developer, Larry Silverstein, was off the witness stand and out of the courtroom within a half-hour last Tuesday.
All day, gravelly voices grind out the lyrics - booze, trucks, fights and jail - surrounded by empty bourbon bottles and fading, photos of long-forgotten stars.
Also, rotational differences caused by tires slipping on slick or gravelly roads can generate false readings, and since ABS sensors need time to accumulate data, a driver could go quite a distance on perilously low tires before the system recognized the situation.
Cerys, whose gravelly tones helped the band stand out,became depressed but moved to the US to start a new life.
Whether it comes from a gravelly voiced grandma, a gruff construction worker, a teen, or a child, it doesn't matter.
Burton slurs his gravelly response magnificently in a phrase that must surely play in the heads of all men ever since who have followed Becket's footsteps to Canterbury.
His gravelly voice helped calm the mood, with help from Roger Waters and Isaac Hayes.