PSI - Issue 55

3

Afif Rahma/ Structural Integrity Procedia 00 (2019) 000 – 000

Afif Rahma et al. / Procedia Structural Integrity 55 (2024) 206 – 213

208

0.15 0.075

0.30

0.60

1.18

0 20 40 60 80 100 Passing %

Sieve size (mm)

16

30

50

200

Sieve N o

100

Figure 1: granular composition of dune sand

The macro polypropylene fibre (PPF) is a synthetic textile fibre that has a linear structure based on the monomer CnH 2 n. The (PPF) is not degradable with soil and not decomposed by water. Table 1. gives the general physical, mechanical, and chemical specifications of the Polypropylene fibre (Kiron 2021, Mansfield 1999). In accordance with ASTM 4268 standard, the Engineering Toolbox Site and Kochem website, the physical and chemical properties of polypropylene used to produce polypropylene rope are summarized in Table 1 .

Table 1: Physical and chemical properties of Polypropylene fibre Relative density 0.90-0.91

Thermal conductivity

6.0 (with air as 1.0)

Tensile strength (MPa)

>500

Abrasion resistance

Good

Elasticity (MPa)

3500

Chemical resistance

Excellent

Elongation at break (%)

10 to 45

Resistance to mildew, moth

Excellent Excellent

Moisture absorption (%)

0 to 0.05

Ability to protest friction

excellent

Softening point (ºC)

140

Ability Against Acid affect

Excellent

Melting point (ºC)

110-180

Ability Against Insect

The fibres used are extracted from rope 0.6 cm in diameter, provided from the local market for domestic use (Figure 2). The rope was cut to a size of 4 and 8 cm; the measurement gave an average value of 0.3 mm of diameter for singular fibre. The laboratory tests gave the value of 0.905g/cm3 for density and 80 MPa for the tensile strength.

Figure 2: polypropylene fibre

2.3. Concrete mix batches To calibrate the effect of the macro polypropylene fibre for a wide perception of this material on the behaviour of concrete, the fine sandy concrete was prepared for an amount of 250 kg of cement per cubic meter. In the second