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

Table 1

1st program: tested concretes’ composition without superplasticizer.

Concretes	W/C	A/S	(m^3)	Cement (kg)	Water (kg)	Aggregates (kg)	Sand (m^3)	Slump (cm)
Series 1: influence of cement paste volume ()
B11	0.5	1.2	0.378	460	230	848	706	21
B12			0.354	430	215	881	734	19
B13			0.329	400	200	915	763	15
B14			0.308	375	188	943	786	13
Series 2: influence of water/cement ratio (W/C)
B21	0.55	1.2	0.378	434	239	848	706	23
B22	0.5			460	230			21
B23	0.45			490	220			18
B24	0.4			524	210			11
Series 3: influence of aggregates/sand ratio (A/S)
B31	0.5	1	0.354	430	215	808	808	19
B32		1.2				881	734	19
B33		1.4				943	673	19
B34		1.6				994	621	19
Series 4: influence of aggregates diameter
Crushed ag. 4/12
B41	0.5	1.2	0.378	460	230	868	723	19
B42			0.354	430	215	902	752	14
Crushed ag. 4/16
B1	0.5	1.2	0.378	460	230	868	723	20
B2			0.354	430	215	902	752	15.5
Crushed ag. 4/20
B43	0.5	1.2	0.378	460	230	868	723	21
B44			0.354	430	215	902	752	16
B45			0.329	400	200	936	780	10
Crushed ag. 10/20
B11	0.5	1.2	0.378	460	230	848	706	21
B12			0.354	430	215	881	734	19
B13			0.329	400	200	915	762	15
B14			0.308	375	188	943	786	13