Experimental Study on Modification of Grouting Material for Joints of Prefabricated Buildings

International Journal of Concrete Structures and Materials

Table 12 Working performance of modified grouting material

Group	PCE (g)	Fluidity (mm)		Setting time (min)		Vertical expansion rate (%)
Group	PCE (g)	Initial	After 30 min	Initial setting	Final setting	3 h	24 h	Δ_{24h–3 h}
BG	2.3	353	322	348	476	0.514	0.454	− 0.06
E2C0R5	2.3	363	336	369	499	0.560	0.670	0.110
E2C2R5	2.8	346	355	554	702	0.321	0.407	0.086
E2C5R5	4.0	348	354	724	974	0.060	0.061	0.001
E2C7R5	4.8	342	336	813	986	0.045	0.045	0.000
E1C2R5	2.8	350	357	675	873	0.312	0.359	0.047
E3C2R5	2.8	344	352	518	678	0.331	0.412	0.081
E2C2R7	2.8	345	354	549	691	0.138	0.328	0.190
E2C2R10	2.8	346	357	526	675	0.166	0.268	0.102
E2C2R15	2.8	345	353	508	663	0.116	0.259	0.143