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

Table 2

2nd test program: tested concretes’ composition with five superplasticizers of two different natures.

Type of superplasticizer	Concretes	W/C	A/S	Sp (%)	Cement (kg)	Water (kg)	Aggregates 6/20 (kg)	Sand (kg)	Slump (cm)
A1 (polycarboxylate modified)	B1Ad.0	0.5	1.2	0	410	205	909.4	757.9	15
	B1Ad.0.2			0.2					17
	B1Ad.0.4			0.4					19
	B1Ad.0.6			0.6					20
	B1Ad.0.8			0.8					21
A2 (polycarboxylate modified)	B1Ad.0	0.5	1.2	0	410	205	909.4	757.9	15
	B1Ad.0.2			0.2					17
	B1Ad.0.4			0.4					20
	B1Ad.0.45			0.45					21
A3 (phosphonate modified)	B1Ad.0	0.5	1.2	0	410	205	909.4	757.9	15
	B1Ad.0.2			0.2					16
	B1Ad.0.4			0.4					19
	B1Ad.0.6			0.6					21
	B1Ad.0.8			0.8					22
A4 (polycarboxylate modified)	B1Ad.0	0.5	1.2	0	410	205	909.4	757.9	15
	B1Ad.0.2			0.2					16
	B1Ad.0.4			0.4					19
	B1Ad.0.6			0.6					20
	B1Ad.0.8			0.8					22
A5 (polycarboxylate modified)	B1Ad.0	0.5	1.2	0	410	205	909.4	757.9	15
	B1Ad.0.2			0.2					16
	B1Ad.0.4			0.4					18
	B1Ad.0.6			0.6					21
	B1Ad.0.8			0.8					24