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  CVEN 515

Course Name: Cementitious Binders

Lab-1: Flow, Setting Time and Compressive Strengt o! "inders

  #ate o! Submission: 12-16-2013

Submitted "$

Ashis Kumar Roy

Student ID: 10210624

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%b&e'tive: 

The o!e"ti#e o$ this test %as to $ind the $&o%' settin( time and "om)ressi#e stren(th o$ inders

$o&&o%in( the AST* C-10+' C-143, and C-1+1 Standard At $irst )re)aration o$ the s)e"imen

%as done %ith res)e"t to AST* C-10+ standard In this re)ort on&y the )re)aration o$ "ue

s)e"imens is dis"ussed

(pparatus:

1 .raded Standard Sand and Cement

2 /ater  3 /ei(hts and /ei(hin( de#i"es

4 *ier Bo%& and add&e

S)e"imen *o&ds

6 Tam)er  , Tro%e&

)ro'edure:

At $irst thin "oatin( o$ (rease %as used o#er the interior sur$a"es o$ the mo&d and ase )&ate so

that the "ured mortar does not sti" Then the ort&and "ement and sand %ere %ei(hed At $irst

the miin( %ater %as )&a"ed inside the miin( o%&' and then the "ement %as added to the

%ater /ater to "ement ratio %as 04 5%"7 Then the mier %as started and mied at s&o%

s)eed $or 30s Then the sand %as added "ontinuin( the s&o% s)eed %ithin 30s and mied s&o%&y

$or 30s The mied mortar %as e)t in the mier $or $e% minutes

Figure 1 : Thin "oatin( o$ (rease o#er the mo&d sur$a"e 5&e$t7 and miin( the %ater "ement and

sand in the miin( o%& 5ri(ht7

 8et' one &ayer o$ mied mortar %as )&a"ed inside the mo&d and tam)ed methodi"a&&y A$ter

tam)in( the $irst &ayer' the se"ond &ayer o$ mortar %as )&a"ed o#er the $irst &ayer "ontainin(

e"ess mortar so that a$ter tam)in( mortar "o#ers the %ho&e mo&d #o&ume 59i(ure 27

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Figure *:  *ied *ortar 5&e$t7 and tam)in( the mortar &ayer inside the mo&d 5ri(ht7

A$ter tam)in(' the to) mortar mo&d %as "ut %ith the tro%e& to (et a (ood sur$a"e $inish and set

$or "urin( $or more than 24 hours A$ter the mo&d %as "ured the s)e"imen "ues %ere remo#ed

$rom the mo&d 59i(ure 37 and immersed in a &ime %ater "urin( tan 59i(ure 47

Figure +: 9inished *ortar Cue 5&e$t7 and "ured mortar "ue 5ri(ht7

Figure : &a"in( the mortar "ue inside the K; so&ution