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Civil lab equipment and testing procedure

  1. Tests on Cement- Civil lab equipment
    1.1 Fineness 1
    1.2 Consistency 3
    1.3 Initial and final setting time 5
    1.4 Soundness 7
  2. Tests on Aggregates- Civil lab equipment manufacturer
    2.1 Sieve analysis 9
    2.2 Water absorption 13
    2.3 Aggregate abrasion value 15
    2.4 Aggregate impact value 18
    2.5 Aggregate crushing value 21
  3. Tests on Fresh Concrete
    3.1 Workability 23
    3.1.1 Slump 23
    3.1.2 Compacting factor 25
    3.1.3 Vee-Bee 27
  4. Tests on Hardened Concrete
    4.1 Non-destructive tests 29
    4.1.1 Rebound hammer 29
    4.1.2 Ultrasonic pulse velocity 31
    4.2 Compression test 34
  5. Tests on Soil
    5.1 Water content 38
    5.1.1 Oven drying method 38
    5.1.2 Calcium carbide method 41
    5.2 Particle size distribution 44
    5.3 Liquid limit 47
    5.4 Plastic limit 50
    5.5 Free swell index 52
    5.6 Specific gravity 54
    5.7 Maximum dry density and optimum moisture content 57
    5.8 In-situ dry density 61
    5.8.1 Core cutter method 61
    5.8.2 Sand replacement method 63
  6. Tests on Blanket Material 68
  7. Tests on Bitumen
    7.1 Bitumen content 72
    7.2 Specific gravity 74
    7.3 Marshall stability 76
    7.4 Penetration 78
    7.5 Flash point and fire point 80
    7.6 Softening point 83
    7.7 Ductility 86
  1. TESTS ON CEMENT- Civil lab equipment
    1.1 FINENESS
    AIM
    To determine the fineness of cement by dry sieving as per
    IS: 4031 (Part 1) – 1996.
    PRINCIPLE
    The fineness of cement is measured by sieving it through a
    standard sieve. The proportion of cement, the grain sizes of
    which, is larger than the specified mesh size is thus determined.
    APPARATUS

i) 90µm IS Sieve
ii) Balance capable of weighing 10g to the nearest 10mg
iii) A nylon or pure bristle brush, preferably with 25 to 40mm
bristle, for cleaning the sieve
1
PROCEDURE
i) Weigh approximately 10g of cement to the nearest 0.01g and
place it on the sieve.
ii) Agitate the sieve by swirling, planetary and linear
movements, until no more fine material passes through it.
iii) Weigh the residue and express its mass as a percentage R1
,of the quantity first placed on the sieve to the nearest 0.1percent.
iv) Gently brush all the fine material off the base of the sieve.
v) Repeat the whole procedure using a fresh 10g sample to obtain R2
. Then calculate R as the mean of R1 and R2 as a
percentage, expressed to the nearest 0.1 percent. When the
results differ by more than 1 percent absolute, carry out a
third sieving and calculate the mean of the three values.
REPORTING OF RESULTS
Report the value of R, to the nearest 0.1 percent, as the residue
on the 90µm sieve

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