V. CALCULATION 1. Calculate the vicat time of setting to the nearest 1 min. as follows: (H-E x (C- 25)+ E Where: E = time in minutes of last penetration greater than 25 mm, time in minutes of first penetration less than 25 mm, penetration reading at time E, H D = penetration reading at time H, 2. Calculate the vicat final time of setting by determining the elapsed time between the time of the initial contact between cement and water and the time when the needle does not sink visibly into the paste, rounded to the nearest 5 min. VI. DATA RESULTS AND COMPUTATION Table 5.1 Test Summary Vicat time of setting: Vicat Final time of setting: Table 5.2 Test Results Time after molding Time after molding (min) 210 Penetration Penetration (min) (mm) (mm) 25 30 40 45 40 225 20 60 40 240 18 75 40 255 16 90 40 270 14 105 40 300 12 120 135 37 315 37 330 150 35 345 4 165 33 360 180 32 375 195 29 390 210 I|||

V. CALCULATION 1. Calculate the vicat time of setting to the nearest 1 min. as follows: (H-E x (C- 25)+ E Where: E = time in minutes of last penetration greater than 25 mm, time in minutes of first penetration less than 25 mm, penetration reading at time E, H D = penetration reading at time H, 2. Calculate the vicat final time of setting by determining the elapsed time between the time of the initial contact between cement and water and the time when the needle does not sink visibly into the paste, rounded to the nearest 5 min. VI. DATA RESULTS AND COMPUTATION Table 5.1 Test Summary Vicat time of setting: Vicat Final time of setting: Table 5.2 Test Results Time after molding Time after molding (min) 210 Penetration Penetration (min) (mm) (mm) 25 30 40 45 40 225 20 60 40 240 18 75 40 255 16 90 40 270 14 105 40 300 12 120 135 37 315 37 330 150 35 345 4 165 33 360 180 32 375 195 29 390 210 I|||

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

a. Solve for Vicat time of setting. b. Solve for the final time of setting.

V.
CALCULATION
1. Calculate the vicat time of setting to the nearest 1 min. as follows:
e- 25-
H-E
x (C – 25)+ E
C-D.
time in minutes of last penetration greater than 25 mm,
time in minutes of first penetration less than 25 mm,
penetration reading at time E,
penetration reading at time H,
Where:
E
%3D
H
!!
D
%3!
2. Calculate the vicat final time of setting by determining the elapsed time between the time of the
initial contact between cement and water and the time when the needle does not sink visibly into
the paste, rounded to the nearest 5 min.
VI.
DATA RESULTS AND COMPUTATION
Table 5.1 Test Summary
Vicat time of setting:
Vicat Final time of setting:
Table 5.2 Test Results
Time after molding
Time after molding
(min)
210
225
Penetration
Penetration
(min)
(mm)
(mm)
25
30
40
45
40
20
60
40
240
18
75
40
255
16
90
40
270
14
105
40
300
12
315
330
120
37
135
37
6.
150
35
345
4
165
33
360
180
32
375
195
29
390

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