Manufacturing Light Concrete with PET Aggregate

Table 2

Values obtained in each test samples.

Aggregate (kg/cm^2)	CN-150	CN-200	CN-250	CN-300	CL-150	CL-200	CL-250	CL-300
Water (kg/cm^2)	205	205	205	205	225	225	225	225
Cement (kg/m^3)	310	350	390	450	281	321	365	409
Gravel/PET (kg/m^3)	1000	1000	1000	1000	133	133	133	133
Sand (kg/m^3)	860	825	790	740	716	698	678	657
Shrinkage (cm)	8.7	9.7	9.8	10.0	8.6	9.5	9.6	9.7
Fresh volumetric weight (kg/m^3)	1563	2246	2190	2100	1360	1385	1403	1431
Air content (%)	2	2	2	2	1.6	1.7	1.8	1.9
𝑊/𝐶 ratio	1.3	1.01	0.82	0.47	0.8	0.7	0.62	0.55
Compression strength (kg/cm^2) 7 days	145.7	116.7	192.3	218.2	143.5	160.57	193.41	250.18
Compression strength; (kg/cm^2) 14 days	149.3	145.08	199.25	252.25	147.41	158.38	214.84	247.97
Compression strength; (kg/cm^2) 28 days	149.9	188.2	243.3	306.86	148.38	185.16	231.2	297.08
Tensile strength; (𝑓𝑡) (kg/cm^2)	18.38	21.3	23.7	24.65	14.38	16.8	18.17	20.16
Class I concrete; 1.5 * (𝑓^′𝑐)^1/2	18.37	21.21	23.72	25.98	18.27	20.41	22.81	25.85
Class II concrete; 1.2 * (𝑓^′𝑐)^1/2	14.7	16.97	18.97	20.78	14.62	16.33	18.25	20.68
Flexural strength; 𝑀𝑅 (kg/cm^2)	25	28.81	32.12	35.56	23.43	26.39	27.11	28.34
Class I concrete; 2.0 * (𝑓^′𝑐)^1/2	24.49	28.28	31.62	34.64	24.33	27.21	30.41	34.47
Class II concrete; 1.4 * (𝑓^′𝑐)^1/2	17.15	19.8	21.14	24.25	17.03	19.05	21.29	24.13
Modulus of elasticity; E * 10^3 (kg/cm^2)	155	227	198	263	59	69	86	97
Class I concrete; 14.000 * (𝑓^′𝑐)^1/2	172	198	221	243	170	191	213	241
Class II concrete; 8.000 * (𝑓^′𝑐)^1/2	98	113	127	139	97	109	122	138