Effects of Coatings Containing Organic Ashes on the Corrosion Performance of Reinforcements

Table 1

Chemical components of the cement and organic ashes (% by weight).

Organic ashes and cement	SiO2	Al2O3	Fe2O3	CaO	MgO	K2O	Na2O	SO3	Loss on ignition	Total
Cement	24.7	6.5	3.8	51.1	1.6	—	—	2.9	7.3	99.9
Wheat straw ash	24.3	9.2	8.9	31.4	4.6	7.8	1.3	6.9	6.3	99.7
Corn stalk ash	37.4	6.1	5.3	23.1	6.0	7.1	2.5	4.5	7.4	99.4
Sunflower stalk ash	39.4	4.4	5.1	17.1	7.3	9.3	3.5	6.3	7.4	99.8