Table 6 Chemical composition of BSA.

From: Bamboo stem ash as a sustainable cement replacement in lightweight foam mortar enhancing mechanical thermal and microstructural properties

Oxide components

Percentage (%)

SiO₂

47.77

CaO

24.51

K₂O

8.28

Al₂O₃

6.45

MgO

4.31

Fe₂O₃

2.89

Na₂O

1.62

SO₃

1.18

P₂O₅

1.07

ZnO

0.23

CuO

0.16

MnO

0.08

LOI

1.45

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