Mechanical Properties of Polypropylene-Fiber-Reinforced High-Performance Concrete Based on the Response Surface Method

Table 6

The response results of the 17 experimental groups.

Mix number	Response values
Std	R1: 7 d compressive strength (MPa)	R2: 7 d flexural Strength (MPa)	R3: 7 d flexural-compressive ratio (%)	R4: 28 d compressive strength (MPa)	R5: 28 d flexural Strength (MPa)	R6: 28 d flexural-compressive ratio (%)	R7: 28 d splitting tensile strength (MPa)	R8: 28 d initial cracking strength (MPa)	R9: 28 d bending strength (MPa)
1	53.65	5.4	10.07	65.65	6.7	10.20	8.04	1.94	3.01
2	53.8	5.9	10.97	61.85	7.2	11.64	8.84	3.42	4.73
3	27.95	4.45	15.92	39.2	5.75	14.67	7.25	5.47	6.66
4	28.0	4.4	15.71	39.05	5.95	15.24	7.45	3.21	4.43
5	55.85	6.4	11.46	59.65	7.95	13.33	8.95	4.85	6.02
6	32.9	6.25	19.00	57.85	7.6	13.14	8.85	4.39	5.59
7	35.2	4.75	13.49	46.15	6.15	13.33	7.85	7.30	8.60
8	33.9	5.2	15.34	44.15	6.55	14.84	8.0	6.13	7.31
9	59.6	3.95	6.63	61.15	5.3	8.67	8.9	5.22	6.45
10	35.9	5.35	14.90	46.4	6.65	14.33	8.45	6.14	7.31
11	43.25	4.8	11.10	55.05	5.15	9.36	6.75	3.53	4.73
12	21.1	3.4	16.11	31.65	4.7	14.84	6.25	4.28	5.59
13	41.35	6.05	14.63	56.6	7.25	12.81	8.65	5.70	6.88
14	38.55	5.65	14.66	55.3	7.05	12.74	8.25	6.09	7.31
15	39.9	5.85	14.66	58.25	6.95	14.57	8.3	5.72	6.89
16	35.9	5.7	15.88	55.8	6.85	12.28	8.45	5.68	6.88
17	39.5	5.8	14.68	58.05	7.2	12.40	8.5	5.58	6.88