PSI - Issue 47

Noorsuhada Md Nor et al. / Procedia Structural Integrity 47 (2023) 732–743 Md Nor et al./ Structural Integrity Procedia 00 (2019) 000–000

735

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The cubes sizes 50 mm x 50 mm x 50 mm were prepared for determination of the compressive strength of the mortar that containing 50% RCA. The compressive strength of the cubes was determined at the age of 7, 14 and 28 days. Meanwhile, the interlocking concrete blocks were made with dimensions of 390 mm length, 100 mm width and 100 mm thick, as shown in the schematic diagram in Fig. 3. The block is suitable for use as a partition. The length includes the tongue and groove of the block. The length of the tongue and groove was 15 mm, as shown in Fig. 3. Two types of interlocking concrete blocks were made, a solid and a hollow interlocking concrete block.

water Cement

w/c ratio 0.65

1

Sand (Natural fine aggregate)

50%

4

RCA

50%

1% of cement weight

Superplasticiser

Fig. 2. Concrete mix design used in the production of interlocking concrete block.

a)

b)

Fig. 3. Schematic diagram of the interlocking concrete blocks (unit in mm) (a) solid and (b) one hollow