Estimation of the Pumping Pressure from Concrete Composition Based on the Identified Tribological Parameters

Table 4

Concretes compositions used in the study of Kaplan [4].

Concretes	W/C	(m^3)	A/S	Sp/Sp^*	(mm)	Rheological parameters				Tribological parameters				Pumping pressures
						Slump; (cm)	(Pa)	(Pa)	(Pa·s/m)	(Pa)	(Pa·s/m)	(Pa)	(Pa·s/m)	(bar)	(bar)	(bar)
C=/52/FL	0.48	0.318	1.06	0	2.24	16	1221	808	73	111	470	60.9	487.7	25.0	25.2	22.9
C=/38/FL	0.53	0.338	0.58	0	2.57	16	1221	722	31	85	344	60.9	315.9	18.5	17.3	16.0
C=/66/FL	0.51	0.333	1.80	0	1.94	18	1077	1017	71	79	357	54.4	399.8	18.7	16.3	19.0
C−/52/FL	0.57	0.311	1.17	0	1.87	18	1077	473	73	64	267	54.4	281.0	14.2	16.7	14.3
C−/38/FL	0.61	0.328	0.60	0	2.37	18	1077	440	50	56	252	54.4	196.0	13.2	16.0	10.9
C−/66/FL	0.61	0.324	1.82	0	1.69	20	932	743	59	53	244	48.0	230.8	12.7	14.1	11.9
C=/52/TP	0.57	0.292	1.08	0	2.22	14	1365	0	0	81	288	67.4	347.0	0.0	0.0	0.0
C=/38/TP	0.64	0.315	0.57	0	2.24	13	1437	775	51	75	290	70.7	238.6	15.8	14.2	13.5
C+/52/TP	0.50	0.313	1.04	0	2.18	12	1509	1314	94	150	455	73.9	551.9	26.6	30.1	26.2
C+/38/TP	0.52	0.318	0.60	0	2.62	15	1293	554	50	81	338	64.2	343.8	18.0	22.7	17.3
C+/66/TP	0.49	0.308	1.96	0	1.63	13	1437	976	90	89	349	70.7	651.9	18.9	21.1	22.9
C−/52/TP	0.69	0.279	1.07	0	1.98	15	1293	696	82	58	207	64.2	204.7	11.5	12.4	11.8
C−/38/TP	0.76	0.304	0.60	0	2.22	13	1437	556	78	170	206	70.7	161.6	17.8	10.0	10.4
C+/52/FL	0.34	0.297	1.08	0.8	1.94	21	860	378	351	260	587	33.5	939.5	37.8	35.7	38.9
C+/38/FL	0.40	0.323	0.57	0.8	2.45	21	860	403	132	50	470	33.5	474.0	21.5	25.0	20.8
C+/66/FL	0.38	0.317	1.88	0.8	1.52	22	788	377	121	104	664	30.3	870.9	32.0	28.9	35.6
_0,5%	0.41	0.330	1.01	0.2	2.12	16	1221	1173	88	100	622	58.1	719.8	25.6	28.8	26.9
_1%	0.36	0.305	1.09	0.4	1.90	19	1005	1200	50	0	718	45.6	920.1	24.1	25.7	27.0
_1,5%	0.37	0.311	1.08	0.6	1.88	21	860	655	175	50	778	36.3	748.7	28.4	21.4	26.8
_2%	0.35	0.301	1.07	0.8	1.87	20	932	900	270	32	926	36.8	883.2	32.5	40.1	31.3