Building Materials, Third Edition

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concrete cylinder placed with its axis horizontal between the platens as shown in Fig. 10.17.
The load is applied at a rate so as to produce a tensile splitting stress of about 2.0 N/mm^2 /
minute until the resistance of the specimen to the increasing load breaks down and no greater
load can be sustained. The specimen fails finally by splitting along the loaded diameter. The
maximum load applied is recorded. The splitting tensile strength is given by

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T = 2

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2p 0.637 P
DL DL
Where P = maximum load in N applied to the specimen
D = diameter of specimen in mm
L = length of the specimen in mm
The relationship between compressive strength and split tensile strength, and flexural strength
and split tensile strength are shown in Figs. 10.18 and 10.19, respectively.

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pressive strength (

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Pa)

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