Transcript
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JCT COLLEGE OF
ENGINEERING AND TECHNOLOGY
STRENGTH CHARACTERISTICS OF CONCRETE
WITH SEA SAND AS FINE AGGREGATE
SECOND REVIEW
SARITHA. V
M.E, STRUCTURAL-FINAL YEAR
UNDER THE GUIDANCE OF
Mr. MURUGESH.V,M.E.
ASSISTANT PROFESSOR
Department o !"#"$ en%"neer"n% &CT CET
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MATERIALS TO 1E TESTED
23CEMENT
43FINE AGGREGATE
53COARSE AGGREGATE
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!ement
IS mar 65 %ra/e !ement 71ran/-ACC!ement3 +a) )e/ or a$$ !on!retem"8e).
• T*e !ement )e/ +a) re)* an/+"t*ot an $mp). Te)t"n% o !ement+a) /one a) per IS9
• :224-2;:; <4=>.• T*e !ement )e/ +a) )"m"$ar to Tpe I
!ement 7ASTM C 2?@3.
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Coar)e a%%re%ate)
• Lo!a$$ a#a"$a'$e !oar)e a%%re%ate) *a#"n% t*ema8"mm )"e o 2@ mm an/ 4@mm +ere )e/"n t*e pre)ent +or.
•
T*e 2@mm a%%re%ate) )e/ +ere 0r)t )"e#e/t*ro%* 2@mm )"e#e an/ t*en t*ro%* 6.B?mm )"e#e an/ 4@mm a%%re%ate) +ere 0r)t$)"e#e/ t*ro%* 4@mm )"e#e. T*e +ere t*en+a)*e/ to remo#e /)t an/ /"rt an/ +ere /r"e/to )ra!e /r !on/"t"on.
• T*e a%%re%ate) +ere te)te/ per In/"anStan/ar/ Spe!"0!at"on) IS9 5:5-2;B@ <4B>.
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FINE AGGREGATE
• Sea )an/ ") )e/ a) 0ne a%%re%ate
• T*e )an/ +a) 0r)t )"e#e/ t*ro%*6.B? mm )"e#e to remo#e anpart"!$e) %reater t*an 6.B? mm an/t*en +a) +a)*e/ to remo#e t*e /)t.
• T*e 0ne a%%re%ate) +ere te)te/ perIn/"an Stan/ar/ Spe!"0!at"on) IS95:5-2;B@ <4B>.
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Advantages and Disadvantages of Sea Sand
ADVANTAGES
• It is the cheapest form of fine aggregate
• In contrast to crushed fine aggregate, it is more rounded
or cubical like river sand and hence, demand for aterand cement is lo !rice
• As it is found in natural deposits grading of sea sand is
generall" good
• Grading of sea sand is finer than that of river sand and
since local crushed stone coarse aggregate is coarser, it
does not sho an" adverse effects hen used in concrete
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DISADVANTAGES
• It ma $ea/ to eore)!en!e an/!orro)"on o re"nor!ement
• I +a)*"n% ") ne!e))ar, "t ma 'e ana//"t"ona$ 'r/en
• O)*ore )an/ a!"$"t +"$$ re"re a$ar%e !ap"ta$ "n#e)tment
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Sieve anal"sis of fine aggregate
eight of sample taken#$%%%g
S"e#e )"e e"%*t reta"ne/
+e"%*t reta"ne/
Cm$at"#e +t reta"ne/
+e"%*t pa))"n%
6.B? mm 2:.? 2.:? 2.:? ;:.2?
4.5=mm 54.B 5.4B ?.24 ;6.::
2.2:mm 22B.5 22.B5 2=.:? :5.2?
@.=mm ?5@ ?5 =;.:? 5@.2?
@.64?mm 2@@ 2@ B;.:? 4@.2?
@.5mm :? :.? ::.5? 22.=?
@.2?mm :5.2 :.52 ;=.== 5.56
@.@B?mm 55.6 5.56 2@@ @
F J!m$at"#e +t reta"ne/K2@@
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From t*e %rap*
• Ee!t"#e )"e D2@ @.4?mm
• n"orm"t !oe!"ent ,!D=@KD2@
5.4
• Coe!"ent o !r#atre,!!D5@K7D5@D=@3
2.:• F"nene)) mo/$) FK2@@
6.?;
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Spe!"0! %ra#"t o 0nea%%re%ate
O')er#at"on) e"%*t7%3
e"%*t o p!nometer7+23 =B?
e"%*t o p!nometer )o"$7+43 24B?
e"%*t o
p!nometer)o"$+ater7+53
2:@@
e"%*t o p!nometer+ater7+63 26??
Temperatre o t*e te)t 4B
Spe!"0! %rea#"t o /")t"$$e/ +aterGt
2
Spe!"0! %ra#"t G) 7+4-+23GtK7+4-+23-7+5-+63
Spe!"0! %ra#"t o 0nea%%re%ate 4.5?
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1$"n% o )an/.
• From t*e %rap* p$otte/ 'et+een t*e o'ta"ne/#a$e) o per!enta%e '$"n% an/ mo")tre!ontent
• Per!enta%e o +ater,pro/!"n% ma8"mm '$"n%o )an/ 5@
• Ma8"mm '$"n% a!tor2.@B;
• Per!enta%e o +ater pro/!"n% ero '$"n% o)an/4
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