Summary Report of Experimental Study on Dehydration Crack Appearing in the Construction of Turpan Civil Airport Cement Concrete Pavement - The Issues and Discussion of Modern Concrete Science - page 219

Fig. 16.6 Cracks on concrete
slab which employ Tianshan
cement

The sixth slab: No crack, but 13 sand holes.
The slabs from the

rst to sixth were in section which adopted troweling

machine.
The seventh slab: One crack; its length was 6 cm, and its width is nearly 2 mm.
The eighth slab: Seven cracks, which were located at the middle and side parts
of the slab. Their length was 12, 11, 6, 22, 31, 8, and 18 cm, respectively, and
their width was 1

2mm.
The ninth slab: Three cracks, which were located at the middle and side parts of
the slab. Their length was 11, 9, and 6 cm, respectively, and their width was
1

-

2 mm.
The tenth slab: No crack, but 5 sand holes.
The eleventh slab: It is a slab which has the most serious crack in the entire
experimental section on July 5. There were totally 32 cracks, the length of which
was ranged from 7 to 45 cm, and the width was 1

-

2 mm.

-

The twelfth slab: No crack.
The slabs from the seventh to twelfth were in napped section.