Experimental study on the effects of hydrochemistry and periodic changes in temperature and humidity on sandstone weathering in the Longshan Grottoes

Heritage Science

Table 3 Classification of rock sample split types

Solution types	Destruction type		Portion of tensile destruction samples (%)	Portion of composite destruction samples (%)
Solution types	Tensile failure	Pull and cut composite damage	Portion of tensile destruction samples (%)	Portion of composite destruction samples (%)
DH₂O	H1–4, H6–7, H9, H12–14, H16–17	H5, H8, H10–11, H15, H18	67	33
Na₂SO₄	J1, J2, J4–5, J11, J13–18	J3, J6–10, J12	61	39
NaCl	L1–4, L6–8, L10–16, L18	L5, L9, L17	83	17
NaHCO₃	K1–10, K12–18	K11	94	6