What's the difference between bitumen and pitch?

Bitumen


Definition:

  • (n.) Mineral pitch; a black, tarry substance, burning with a bright flame; Jew's pitch. It occurs as an abundant natural product in many places, as on the shores of the Dead and Caspian Seas. It is used in cements, in the construction of pavements, etc. See Asphalt.
  • (n.) By extension, any one of the natural hydrocarbons, including the hard, solid, brittle varieties called asphalt, the semisolid maltha and mineral tars, the oily petroleums, and even the light, volatile naphthas.

Example Sentences:

  • (1) Tar bitumens are classifiable as the pyrolysis products of organic materials and are applied hot.
  • (2) The tests of bitumen, chlorcaoutchouc, asbestos cement and polyacryl delivered results comparable to those achieved under working conditions.
  • (3) Did these donations have anything to do with the investigation found, Clinton’s State Department approving the Alberta Clipper , a controversial pipeline carrying large amounts of tar-sands bitumen from Alberta to Wisconsin?
  • (4) There is also oil company interest in shale deposits at 10 locations in Morocco, two in Egypt as well as a "bitumen belt" in Nigeria which is already suffering major environmental damage from oil spills in the delta and the flaring of excess gas.
  • (5) But the huge amounts of water and solvents needed to extract oil from bitumen dramatically boost greenhouse gas output and, on latest production forecasts, will increase Canada’s CO2 emissions by 56 megatonnes by 2020 .
  • (6) The primary task is to ascertain whether tar bitumen can be replaced as a binder in paving for roads and what safety measures are practicable.
  • (7) Even plastics and bitumen which were used in the sphere of drinking water showed after an exposure time of three months up to 192 ml slime per square meter.
  • (8) The acute toxicity of three materials derived from Athabasca Oil Sands--(1) bitumen plus naphtha, (2) untreated naphtha (0-250 degrees C) and (3) synthetic crude oil (0-500 degrees C)--was assessed in a battery of tests.
  • (9) The relation of carbohydrate and protein content significantly changed from 2 at the beginning to 30 after 12 months of incubation the bitumen coating test plates.
  • (10) Since the bitumen-derived streams do not differ substantially in carcinogenic potency from petroleum-derived materials of comparable boiling range and process history, industrial hygiene practices which limit exposures to levels comparable to those observed in the petroleum-refining industry should provide similar measures of protection.
  • (11) Biological monitoring of exposure to bitumen fumes during road-paving operations was carried out.
  • (12) The exposure of sixteen road workers to bitumen fumes was studied.
  • (13) Time-weighted average values of bitumen fumes were determined by personal samplers.
  • (14) Mineral water and bitumen fraction induced an increase of the enzyme activity by 23, 20 and 45%, respectively.
  • (15) Bitumen plus naphtha administered at a concentration of 1.46 mg l-1 did not cause mortality in exposed rats or mice.
  • (16) A 2010 analysis by Accufacts Inc., an energy consulting firm that focuses on pipelines, identified Koch's Corpus Christi plant as one of 22 Gulf Coast refineries—out of more than 50—that is now capable of refining "a significant volume of blended bitumen," the type of crude that would flow through the Keystone XL.
  • (17) The village's fishing creek is contaminated; the school has been looted; the mangrove forests are coated in bitumen and everyone has left, refugees from a place blighted by the exploitation of the region's most valuable asset: crude oil.
  • (18) If the oil finds its way into those waters, the heavy tar sands bitumen will create a submerged disaster requiring a cleanup effort far above and beyond conventional responses.
  • (19) The carcinogenic potential of Athabasca tar sands and six experimental liquids derived from crude bitumen was evaluated utilizing the mouse epidermal carcinogenesis model.
  • (20) In the laboratory technique they have been using the American PIN-DEX system of pull-out necks, modelling of buttress construction without relief and together with the construction, in addition to ceramic facet making to chemical facet-making by means of composite bitumen made by KULZER, trade mark DENTACOLOR XS, which polymerize in Ultraviolet light.

Pitch


Definition:

  • (n.) That point of the ground on which the ball pitches or lights when bowled.
  • (n.) A thick, black, lustrous, and sticky substance obtained by boiling down tar. It is used in calking the seams of ships; also in coating rope, canvas, wood, ironwork, etc., to preserve them.
  • (n.) See Pitchstone.
  • (n.) To cover over or smear with pitch.
  • (n.) Fig.: To darken; to blacken; to obscure.
  • (v. t.) To throw, generally with a definite aim or purpose; to cast; to hurl; to toss; as, to pitch quoits; to pitch hay; to pitch a ball.
  • (v. t.) To thrust or plant in the ground, as stakes or poles; hence, to fix firmly, as by means of poles; to establish; to arrange; as, to pitch a tent; to pitch a camp.
  • (v. t.) To set, face, or pave with rubble or undressed stones, as an embankment or a roadway.
  • (v. t.) To fix or set the tone of; as, to pitch a tune.
  • (v. t.) To set or fix, as a price or value.
  • (v. i.) To fix or place a tent or temporary habitation; to encamp.
  • (v. i.) To light; to settle; to come to rest from flight.
  • (v. i.) To fix one's choise; -- with on or upon.
  • (v. i.) To plunge or fall; esp., to fall forward; to decline or slope; as, to pitch from a precipice; the vessel pitches in a heavy sea; the field pitches toward the east.
  • (n.) A throw; a toss; a cast, as of something from the hand; as, a good pitch in quoits.
  • (n.) A point or peak; the extreme point or degree of elevation or depression; hence, a limit or bound.
  • (n.) Height; stature.
  • (n.) A descent; a fall; a thrusting down.
  • (n.) The point where a declivity begins; hence, the declivity itself; a descending slope; the degree or rate of descent or slope; slant; as, a steep pitch in the road; the pitch of a roof.
  • (n.) The relative acuteness or gravity of a tone, determined by the number of vibrations which produce it; the place of any tone upon a scale of high and low.
  • (n.) The limit of ground set to a miner who receives a share of the ore taken out.
  • (n.) The distance from center to center of any two adjacent teeth of gearing, measured on the pitch line; -- called also circular pitch.
  • (n.) The length, measured along the axis, of a complete turn of the thread of a screw, or of the helical lines of the blades of a screw propeller.
  • (n.) The distance between the centers of holes, as of rivet holes in boiler plates.

Example Sentences:

  • (1) The pattern of the stressor that causes a change in the pitch can be often identified only tentatively, if there is no additional information.
  • (2) Tottenham Hotspur’s £400m redevelopment of White Hart Lane could include a retractable grass pitch as the club explores the possibility of hosting a new NFL franchise.
  • (3) For each theory, a constraint on preformance is proposed based on interference between the "analytic" and "synthetic" pitch perception modes.
  • (4) Pitch forward head movements exerted the strongest effect.
  • (5) A grassed roof, solar panels to provide hot water, a small lake to catch rainwater which is then recycled, timber cladding for insulation ... even the pitch and floodlights are "deliberately positioned below the level of the surrounding terrain in order to reduce noise and light pollution for the neighbouring population".
  • (6) Frankly, the pair had been at each other ever since the Frenchman had come on to the pitch.
  • (7) For a while North Korea refused to play, but after delicate negotiations the players were persuaded back on to the pitch and the correct flag was displayed alongside the team photos.
  • (8) Some artists get thousands of songs pitched and they never know, so Beyoncé herself probably never heard it.
  • (9) Sometimes in the other team’s half, sometimes in front of his own box, sometimes as the last man.” Die Zeit singles out Bayern’s veteran midfielder Schweinsteiger for praise: “In this historic, dramatic and fascinating victory over Argentina , Schweinsteiger was the boss on the pitch.
  • (10) Recent STM studies of calf thymus DNA and poly(rA).poly(rU) have shown that the helical pitch and periodic alternation of major and minor grooves can be visualized and reliably measured.
  • (11) 11.10pm BST Apart from the stumbles in the sales pitch, it's still not clear how the Abbott government will secure most of its budget.
  • (12) The living wage needs to be pitched at a higher level than Osborne has suggested and paid for by increased productivity.
  • (13) Patrick Vieira, captain and on-pitch embodiment of Wenger’s reign, won the trophy with the last kick of his career at the club in the season when the Arsenal-United axis was finally broken by Chelsea at the top of the Premier League.
  • (14) No changes for either side, but Zinedine Zidane has been whispering into Cristiano Ronaldo's ear as he retakes the pitch.
  • (15) While numerous studies on infant perception have demonstrated the infant's ability to discriminate sounds having different frequencies, little research has evaluated more sophisticated pitch perception abilities such as perceptual constancy and perception of the missing fundamental.
  • (16) The club train on a council-owned facility and so, when the pitches are not playable or there are other things on, they sometimes have to look elsewhere to stage their sessions.
  • (17) Their lineup proved to be stacked, with breakouts from AL home run leader Chris Davis and doubles machine Manny Machado, who powered the O's through starting-pitching issues to hang in a tight division.
  • (18) The cavernous studio will play host to a half-sized football pitch, where pundits will demonstrate what players did or didn't do correctly and there are other technological innovations planned that marry broadband interactivity with live coverage.
  • (19) But 30 minutes before takeoff on our private jet – like a top-end Lexus limo with wings – actress Rosamund Pike has heroically stepped in for the year's hot meal ticket: an El Bulli supper, pitch perfect for a selection of rare champagne, devised by Adrià with Richard Geoffroy, Dom Pérignon's effervescent chef de cave.
  • (20) He is helped by constituency boundaries that skew the pitch in Labour’s favour, but even then the leap required looks improbable.