Table 2. Colorimetric results (L*, a*,...

Table 2.

Colorimetric results (L*, a*, and b*) and mineralogical phases detected on samples collected in situ

Sample series	Sub-sample	Depth: cm	Mineralogical phases	L*	a*	b*	Colour target
Undamaged	—	0	E, Cal, Dol, P	62.08	0.03	2.72	CM
COL 4A	−a	0.5	Cal, Dol, P*	75.35	−0.61	5.25	CM
	−b	1.5	Cal, Dol	73.45	0.27	4.01	CM
	−c	2.5	Cal, Dol, P	61.23	0.47	4.35	CM
	−d	4.5	Cal, Dol, P	58.36	3.67	5.18	PBA
	−e	7.5	Cal, Dol, P	54.63	5.28	6.43	PBA
COL 5A	−1	6	Cal, Dol, P	61.84	0.85	4.35	CM
	−2	8	Cal, Dol, P	55.49	5.26	6.25	PBA
COL 5B	−1	0.5	Cal, Dol, P	70.55	0.21	4.25	CM
	−2	2	Cal, Dol, P	61.78	0.86	3.58	CM
	−3	2.7–4.5	Cal, Dol, P	55.49	5.13	6.43	PBA
COL 8A	−1	3	Cal, Dol, P	61.45	0.98	4.74	CM
	−2	5	Cal, Dol, P	57.54	5.36	6.42	PBA
COL 8B	—	0.5	Cal, Dol, P	55.49	5.8	6.62	PBA
COL 9A	—	9.7	Cal, Dol, P	57.4	4.25	6.47	PBA
COL 9B	—	7.8	Cal, Dol, P	55.12	4.84	5.98	PBA

Sample series	Sub-sample	Depth: cm	Mineralogical phases	L*	a*	b*	Colour target
Undamaged	—	0	E, Cal, Dol, P	62.08	0.03	2.72	CM
COL 4A	−a	0.5	Cal, Dol, P*	75.35	−0.61	5.25	CM
	−b	1.5	Cal, Dol	73.45	0.27	4.01	CM
	−c	2.5	Cal, Dol, P	61.23	0.47	4.35	CM
	−d	4.5	Cal, Dol, P	58.36	3.67	5.18	PBA
	−e	7.5	Cal, Dol, P	54.63	5.28	6.43	PBA
COL 5A	−1	6	Cal, Dol, P	61.84	0.85	4.35	CM
	−2	8	Cal, Dol, P	55.49	5.26	6.25	PBA
COL 5B	−1	0.5	Cal, Dol, P	70.55	0.21	4.25	CM
	−2	2	Cal, Dol, P	61.78	0.86	3.58	CM
	−3	2.7–4.5	Cal, Dol, P	55.49	5.13	6.43	PBA
COL 8A	−1	3	Cal, Dol, P	61.45	0.98	4.74	CM
	−2	5	Cal, Dol, P	57.54	5.36	6.42	PBA
COL 8B	—	0.5	Cal, Dol, P	55.49	5.8	6.62	PBA
COL 9A	—	9.7	Cal, Dol, P	57.4	4.25	6.47	PBA
COL 9B	—	7.8	Cal, Dol, P	55.12	4.84	5.98	PBA

COL, column; Cal, calcite; CM, cement matrix; Dol, dolomite; E, ettringite; P, portlandite; P*, relict or secondary portlandite; PBA, pinkish-beige aggregates

[ViewLarge]

Sharing Unavailable