4.2. Sieve Analysis
Table 1 shows the result of the graded crushed concrete debris using sieve
analysis according to the ASTM C144, standard specification for sand and masonry
mortar with 100% passing the No. 4 sieve and 10% passing the No. 200 sieve.
Table 1. Sieve Analysis of Crushed Concrete Debris
4.3. Penetration Test of Standard and Concrete Debris Mix
Table 2 shows the different values of penetration of each five specimens of the
two mixtures.
Table 2. Sieve Analysis of Crushed Concrete Debris
The average difference of the penetration of the standard mix is 8.61% higher
than the average penetration of the concrete debris mixture. However, the
penetration must be read from the nearest ¼ in (6.4 mm). Hence, the penetration of
the concrete debris mixture passed the allowed penetration for mortar.
4.4. Slump of Standard and Concrete Mix
As shown in Table 3, the slump of standard mix is 7.2 inches while concrete
debris mix has a slump of 7.3 inches. In this test, the difference of slump values is
only 0.1inch. However, the slumps of the two mixtures were obtained with the
addition of water from 11% to 60%. The required slump for mortar is from 5-8
inches. Therefore, the slump of the concrete debris mixture passed the required
slump for mortar.
Table 3. Slump of Standard and Concrete Mix