Improvement of Mechanical Properties in Polypropylene- and Glass-Fibre-Reinforced Peach Shell Lightweight Concrete

Table 1

Physical properties of the aggregates.

Physical property	Coarse aggregate		Fine aggregate
	PS	NWA	River sand
Specific gravity (g/cm^3)	1.26	2.66	2.65
Fineness modulus	5	4.9	2.7
Bulk density (kg/m^3)	536	1449	1538
Water absorption (24 h) (%)	26.84	0.5	1.2
Aggregate impact value (%)	1.95	16.72	—
LA abrasion value (%)	6	25	—
Flakiness index (%)	48	24	—
Elongation index (%)	61	34	—
Grading
Sieve size (mm)	Cumulative % by weight passing
16	100		100
9.5	98.2		100
4.75	24.8		99
2.36	0		86
1.18	0		74.7
0.6	0		48.3
0.3	0		16.3
0.15	0		0