Experimental Investigation on the Application of Ultra-Rapid-Hardening Mortar for Rigid Small Element Pavement

Table 5

Mix proportion and outcome of design considerations.

Design case	Mix proportion (by mass)				Setting time (min)	Constructability	Settlement
	Water	Cement	Sand	Retardant
1	0.30	1	2.45	0.005	15	No good	No good
2	0.40			0.005	15	No good	No good
3	0.45			0.010	90	No good	No good
4	0.45			0.005	15	No good	No good
5	0.48			0.005	15	No good	OK
6	0.46			0.006	30	OK	OK