Experimental and Theoretical Study of a New Technique for Mixing Self-Compacting Concrete with Marble Sludge Grout

Table 7

The different mixing methods.

Concrete reference	Dry mixing	Wet mixing		End of mixing
	1 min	1.5 min	2.5 min	Total 5 min
SCC1 procedure 1	Aggregates + cement + marble sludge	+2/3 of water	+ 1/3 of water mixed with the superplasticizer	SCC on the fresh state
SCC2 procedure 2	Aggregates + cement	+ Grout MSG2 (100 kg of sludge dispersed in 80 L of water)	+ 120 L of water mixed with the superplasticizer
SCC3 procedure 3	Aggregates + cement	+ Grout MSG4 (100 kg of sludge dispersed in 120 L of water)	+ 80 L of water mixed with the superplasticizer
SCC4 procedure 4	Aggregates + Cement	+ Grout MSG8 (100 kg of sludge dispersed in 200 L of water + superplasticizer)
		2/3	1/3