Synthesis of Pectiniform Polyurethane-Modified Polycarboxylate and Its Preliminary Application in Ultrahigh-Performance Concrete

Table 1

Chemical composition of PI 42.5 Portland cement, slag, fly ash, and silica fume (%).

Material	Chemical composition (%)
	SiO2	Al2O3	Fe2O3	CaO	MgO
Cement	25.26	6.38	4.05	64.67	2.68
Silica fume	90.82	1.03	1.50	0.45	0.83
Slag	33	13.91	0.82	39.11	10.04
Fly ash	54.29	22.55	5.53	1.34	2.56