7/23/2019 Lab 6 - Normal Consitency & Time of Setting
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American University of Sharjah
College of Engineering
Department of Civil Engineering
Construction Materials Lab
CVE 202
Experiment # 6A Normal Consistency of Cement
Experiment # 6B Time of Setting y !icat
Nee"le
Smitte" y$
Smitte" to$ Dr% Arshi &ari"i
Date of Smission$ 'on"ay( )thNovemer( *+,-
1
Name .D No%
Christian /aymon" 0aer -16-6
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Tale of Contents
Table of Contents.............................................................................................ii
List of Figures..................................................................................................iii
List of Tables....................................................................................................iii
Objectives:.......................................................................................................1
Theory..............................................................................................................2
Eui!"ent # $roce%ures.................................................................................&
Eui!"ent '() an% (*+................................................................................&
$roce%ure '()+:.............................................................................................5
$roce%ure '(*+..............................................................................................,
-ata # esults '()+........................................................................................./
a"!le -ata '()+........................................................................................./
esults..........................................................................................................
-iscussion of esults.....................................................................................10
ources of Error.............................................................................................11
Conclusions )!!lications an% eco""en%ations........................................1&
Conclusion an% )!!lication.........................................................................1&
eco""en%ations......................................................................................1(
eferences.....................................................................................................15
)!!en%ices....................................................................................................1,
a"!le Calculations:..................................................................................1,
2
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Original
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2ist of &igres
'Figure 1+ *alance or scale accurate 4ithin 0.1 of the test
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'Figure 2+ a"!le
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'Figure &+ Trays of suitable si6e 4hich can be heate% in the oven
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'Figure (+ 7etal Thic8ness 9auge
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'Figure 5+ 7etal Length 9auge 333333333..
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'Figure ,+ * Test ieves
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2ist of Tales
Table 1): 7ini"u" 7ass of Test
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Table 1*: ieves i6es333333.
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Table 2): 7ini"u" 7ass of Test
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Table 2*: ieves i6es333333.
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Table &: Fla8iness n%e;333333.
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Table (: Elongation n%e;333333.
333333333333333333..3333.333333icat nee%le to !enetrate 25 "" into the ce"ent !aste. The secon% setting
ti"e is the nal setting time 4hich is %ene% as the ela!se% ti"e 4here the
&
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initial contact of 4ater an% ce"ent reuire% for the >icat nee%le to have no
!enetration in the ce"ent !aste. s
E;ipment < =roce"res
E;ipment 46A < 6B
1. >icat )!!aratus. [!igure "]
2. 7echanical 7i;er. [!igure 2]
&. *alances or scales that have an accuracy of 0.1 g". [!igure #]
(. 9lass gra%uates. [!igure $]
!igure "
!igure 2
(
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!igure # !igure $
=roce"re 46A$
1. -ry the "i;er !a%%le an% bo4l of the "echanical "i;er before co""encing
the !roce%ure.
2. 7easure a uantity of 4ater using the gra%uate% glass cylin%er an% !lace it in
the bo4l.
&. )%% ,50 gra"s of ce"ent an% 4ait &0 secon%s for 4ater absor!tion
(. tart the "i;er an% "i; at lo4 s!ee% 1(0 B 5 r!"G for &0 secon%s an% then
sto! the "i;er for 15 secon%s an% scra!e %o4n any !aste that "ay have
collecte% on the si%es of the bo4l.
5
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5. tart the "i;er again at "e%iu" s!ee% 25 B 10 r!"G an% leave it for 1
"inute.
,. Huic8ly for"ing the ce"ent !aste in a ball sha!e 4ith glove% han%s. Then
tossing si; ti"es through a free !ath of about 150 "" for" one han% to
another so as to !ro%uce a nearly s!herical "ass that "ay be easily inserte%
into the >icat ring 4ith a "ini"u" a"ount of a%%itional "ani!ulation.
/. $ressing the ball resting in the !al" of one han% into the larger en% of the
conical ring hel% in the other han%.
. $lacing the ring on its larger en% on the base !late an% slicing o@ the e;cess
!aste at the s"aller en% by a single obliue stro8e of a shar!=e%ge% tro4el.
icat !enetration versus the a"ount of 4ater to %eter"ine the
nor"al consistency.
12.Calculating the nor"al consistency by the follo4ing for"ula.
=roce"re 46B
,
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1. 7i; ,50 g of ce"ent 4ith the !ercentage of "i;ing 4ater reuire% for
nor"al consistency as %eter"ine% for" the nor"al consistency test
follo4ing the sa"e "i;ing !roce%ure.2. $lace the s!eci"en conne% in the conical ring in the "oist roo" for &0
"inutes.&. Center the !aste conne% in the ring un%er the >icat a!!aratus nee%le
an% a%just the a!!aratus to 6ero "ar8 4hen the nee%le is just touching
the surface of the !aste.(. elease the nee%le for 20 secon%s an% recor% the !enetration rea%ing
fro" the a!!aratus.5. -eter"ine the !enetration at every 15 "inutes thereafter.,. $lot the !enetration versus ti"e an% %eter"ine the initial an% nal setting
ti"es of the ce"ent use%.
Data < /eslts
/eslts 46A
)G Aor"al Consistency esults
TrialI Dater gra"G $enetration ""G1 1,2 1