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1. Scales for weighing aggregates and cement shall be accurate within____%

throughout the range of use. Scales shall be inspected and sealed asoften as the

Engineer may deem necessary to assure their continuedaccuracy.a) 1.0 %

c) 0.5 %

b) 1.5 %d) 2.0 %2.hen cement is placed in contact with the aggregate! batches

may bere"ected unless mi#ed within_____ hours of such contact.

a) 1.5 hours

c) 0.5 hoursb) 2.0 hoursd) 2.5 hours$.hen mi#ed at the site or in a central mi#ing

plant! the mi#ing time shallnot be less than______ nor more than____ unless mi#er

performance testproe ade&uate mi#ing of concrete in a shorter time period.a) $0

seconds nor more than '0 seconds

b) 50 seconds nor more than 90 seconds

c) (0 seconds nor more than 120 secondsd) '0 seconds nor more than 120

seconds.*he +ow of water shall be uniform and all water should be in the drum

bythe end of the ,rst____ seconds of the mi#ing period.a) 5 seconds

c) 15 seconds

b) $0 secondsd) 20 seconds5.-oncrete not place within____ minutes from the time

the ingredientswere charged into the mi#ing drum shall be used.a) 120 minutesc)

(0 minutesb) 150 minutes

d) 90 minutes

(.hen concrete is deliered in truc mi#ers! additional water may beadded to the

batch and additional mi#ing performed to increase the slumpto meetthe speci,ed

re&uirement if permitted by the Engineer! proided allthese operationare performed

within____ after the initial mi#ing operation and the water andcement ratio is not

e#ceeded.a) $0 minutes

c) 45 minutes

b) 15 minutesd) (0 minutes/. sample from a bituminous mi# weighs 1000 grams.

te#traction! it was found out that the dry aggregate weighed '50grams. hat is

the % of asphalt by weight of mi#a) 5.2 %c) 5. %

b) 5.0 %

d) .%.*he minimum penetration of the preseratie with the surface of the

timber piles shall be____a) 150 mmc) 250 mm

b) 200 mm

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d) 100 mm'.*he contractor shall submit in writing a "ob3mi# formula for themi#ture

supported by laboratory test data along with samples of resources of components

and iscosity temperature relationships tothe Engineer for testing and approal

at least____.a) two weesc) one wee

b) three weeks

d) four wees

11.*his is used in soil stabili4ed road surface due to its high____property! that is! it

absorb and retain water.a) otassium -hloride

c) Magnesium Chloride

b) -alcium -hlorided) Sodium -hloride12.*he mass % wear of soil aggregate used

in cement6limeproportions should not be more than____a) 0 %

c) 45 %

b) 50 %d) 55 %1$.*he uniform rate at which the moable head of the -78 machine

traelis_____ .a) 0.05 in6 minc) 0.0 in 6min

b) 0.10 in /min

d) 0.0' in 6min1.-ast in place concrete shall not be post tensioned until at

least____and until the compressie strength has reached the strength speci,ed.a) /

daysc) 1 days

b) 10 das

d) 20 days15.*he penetration test is an indication of the____ of asphalt.

a) Consistenc

c) 9ardnessb) Softnessd) :lash oint1(.Speci,cation re&uires one ;1) <uality test for

eery____ of asphalta) 20 tonsc) 50 tonsb) 200 tonsd) 0 tons1/.*he____ is the most

commonly used method in the design andealuation of bituminous concrete

mi#es.a) =ob mi# formula

c) Marshall !tabilit

b) >esign mi#d) E#traction1.?ibration shall operate a fre&uency of !$00 to '!(00impulses perminute under load at a ma#imum spacing of____ cm.a) $0 cm

c) "0 cm

b) 50 cmd) 0 cm1'.*he speci,c graity of Sodium Sulfate used in soundness test

foraggregate should be with in the range of____.

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a) 1.151 to 1.1#4

c) 1.051 to 1.15b) 1.250 to 1.1/d) 1.05 to 1.120.*he speci,c graity

magnesium sulfate solution used insoundness test for aggregate should be within

the range of____ .a) 1.20 to 1.0

c) 1.295 to 1.$0

b) 1.10 to 1.$0d) 1.1'5 to 1.$121.ggregate accounts for '2 '5 % of the

weight of the bituminousmi#ture asphalt accounts for 5 % of the weight of the

mi#. *hee#act percentage to be used is determined by the_____ 

a) &rial mi'

c) =ob mi#b) >esign mi#d) =ob order22._____ is an indication that the asphalt mi# is

oerheated.

a) (lue smoke

c) 8ising steamb) Sti@ appearanced) Ai# slumps in truc