Historical building dating: A multidisciplinary study of the Convento de São Francisco (Coimbra, Portugal)

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Fig. 6

Color data in the CIELAB 1976 space both rectangular L*, a*, b* (respectively Lightness, red-green color component and yellow-blue color component) and cylindrical, C*, h (respectively chroma and hue angle) coordinates with the related uncertainties_

Sample	L*	a*	b*	C*	h
CSFL3	66.10 ± 1.67	4.63 ± 0.12	22.73 ± 0.58	23.19 ± 0.82	78.52 ± 2.77
CSLF7	55.67 ± 1.54	8.21 ± 0.23	25.57 ± 0.71	26.86 ± 1.01	72.25 ± 2.72
CSFL14	59.63 ± 1.33	11.45 ± 0.25	32.88 ± 0.73	34.82 ± 1.12	70.83 ± 2.28
CSFL12	56.72 ± 1.60	9.23 ± 0.26	26.69 ± 0.75	28.24 ± 1.08	70.95 ± 2.71
CSFL11	64.25 ± 1.52	3.46 ± 0.08	20.32 ± 0.48	20.62 ± 0.69	80.39 ± 2.70

Dating of bricks: k-value, Qβ e qβ values obtained by TL measurements_

Sample	k-value	Qβ (Gy)	qβ (Gy)
CSLF2	0.259 ± 0.011	2.09 ± 0.19	0.13 ± 0.02
CSLF6	0.232 ± 0.018	2.87 ± 0.23	0.05 ± 0.01
CSLF10	0.220 ± 0.010	3.18 ± 0.28	0.09 ± 0.02

Dating of samples: Sample name, sample material, technique, method with ED, annual dose rate, the individual dating results (referred to the year of the TL measurements) and the corresponding calendar dates obtained for both bricks and mortars_

Sample	Material	Technique	Method	ED (Gy)	Annual dose rate (mGy/a)	Age/2016 (a)	Age (AD)
CSFL2	Brick	TL	Added dose	2.22 ± 0.19	11.43 ± 0.85	194 ± 22	1822 ±22
CSFL3	Mortar	OSL	SAR	1.17 ± 0.10	5.41 ± 0.37	216 ± 24	1800 ±24
CSFL6	Brick	TL	Added dose	2.92 ± 0.23	8.62 ± 0.66	339 ± 37	1677 ± 37
CSFL7	Mortar	OSL	SAR	2.03 ± 0.21	6.67 ± 0.47	304 ± 38	1712 ± 38
CSFL10	Brick	TL	Added dose	3.27 ± 0.28	9.44 ± 0.63	346 ± 38	1670 ± 38
CSFL11	Mortar	OSL	SAR	1.13 ± 0.11	5.76 ± 0.37	196 ± 23	1820 ± 23
CSFL12	Mortar	OSL	SAR	2.41 ± 0.15	7.47 ± 0.44	322 ± 28	1694 ± 28
CSFL14	Mortar	OSL	SAR	2.61 ± 0.18	7.81 ± 0.48	344 ± 31	1672 ± 31

Contributions to the annual dose rate: Sample name, sample material, porosity factor W, alpha and beta internal dose rates (Dαint and Dβint) and environmental component (Denv)_

Sample	Material	W	Dαint(mGy/a)	Dβint(mGy/a)	Denv(mGy/a)
CSFL2	Brick	0.16 ± 0.01	29.65 ± 1.25	3.22 ± 0.08	1.22 ± 0.05
CSFL3	Mortar	0.21 ± 0.02	22.71 ± 0.93	1.71 ± 0.04
CSFL6	Brick	0.15 ± 0.01	22.24 ± 0.95	2.53 ± 0.06	1.37 ± 0.05
CSFL7	Mortar	0.22 ± 0.02	22.36 ± 0.90	2.18 ± 0.05
CSFL10	Brick	0.17 ± 0.01	24.95 ± 1.01	2.94 ± 0.07	1.57 ± 0.05
CSFL11	Mortar	0.27 ± 0.02	21.38 ± 0.89	1.80 ± 0.05
CSFL12	Mortar	0.25 ± 0.02	23.31 ± 0.39	2.87 ± 0.06	1.75 ± 0.05
CSFL14	Mortar	0.23 ± 0.02	24.78 ± 0.28	2.86 ± 0.05	1.65 ± 0.05

XRD semi-quantitative mineralogical composition of mortars (%) and aggregate/binder ratio (Qz – quartz; K-felds – potassium feldspars; Na-plag – sodium plagioclases; Cal – calcite; Dolo – dolomite; Phyl – phyllossilicates; * – traces)_

Sample	Qz	K-felds	Na-plag	Cal	Dolo	Phyl	Aggregate (A)	Binder (B)	A/B Ratio
CSFL3	65	21	1	13	*	*	86	13	6.62
CSFL7	65	5	*	26	2	2	70	26	2.69
CSFL11	71	14	1	13	1	*	85	13	6.54
CSFL12	59	12	10	18	1	*	71	18	3.94
CSFL14	66	11	1	21	1	*	77	21	3.67

Details of the samples studied in this work with ID number, material and sampling point description_

		Sampling point (floor 2)
Sample	Material	Architectural element	Height height above planking level (cm)
CSLF2	Brick	Arc (east)	350
CSLF3	Mortar
CSLF6	Brick	Arc (south)	80
CSLF7	Mortar
CSLF10	Brick	Arc (west)	235
CSLF11	Mortar
CSLF12	Mortar	Wall (west)	145
CSLF14	Mortar	Wall (north)	150

Plateau temperature range and preheating (Ph) temperature choose for ED evaluation_

Sample	Plateau ED range (°C)	Ph temperature (°C)
CSLF3	180–220	200
CSLF7	180–240	210
CSLF11	180–220	200
CSLF12	180–220	200
CSLF14	180–240	210

Number of aliquots (n), luminescence efficiency coefficient (k-value), Equivalent Dose (ED) Value and relative standard deviations (SD) obtained, respectively, by radial plot (ED Central Value, see Fig_ 2) and from ED frequency distributions (Mean ED) for mortar samples_

Sample	Number of aliquots (n)	k-value	ED Central Value from Radial Plot (Gy) SD	Mean ED from ED frequency distributions (Gy) SD
CSFL3	39	0.125 ± 0.010	1.17 0.10	1.18 0.18
CSFL7	47	0.161 ± 0.012	2.03 0.21	2.02 0.26
CSFL11	41	0.134 ± 0.010	1.13 0.11	1.12 0.17
CSFL12	38	0.148 ± 0.010	2.41 0.15	2.42 0.22
CSFL14	44	0.157 ± 0.010	2.61 0.18	2.63 0.25

Radioactive measurements: Sample name, sample material with U, Th, K contents obtained by high gamma spectrometry and 238U/226Ra ratio_

Sample	Material	238U/226Ra	U (ppm)	Th (ppm)	K (%)
CSFL2	Brick	1.03 ± 0.11	4.54 ± 0.22	23.26 ± 1.49	2.46 ± 0.07
CSFL3	Mortar	0.97 ± 0.08	3.76 ± 0.18	16.57 ± 1.07	0.90 ± 0.03
CSFL6	Brick	1.02 ± 0.12	3.26 ± 0.16	18.00 ± 1.15	2.00 ± 0.06
CSFL7	Mortar	0.97 ± 0.09	3.91 ± 0.19	15.70 ± 1.00	1.51 ± 0.05
CSFL10	Brick	0.98 ± 0.10	4.30 ± 0.21	17.75 ± 1.14	2.33 ± 0.07
CSFL11	Mortar	1.05 ± 0.08	3.40 ± 0.16	16.30 ± 1.04	1.10 ± 0.03
CSFL12	Mortar	0.99 ± 0.08	3.52 ± 0.06	18.48 ± 0.49	2.37 ± 0.07
CSFL14	Mortar	0.97 ± 0.10	3.70 ± 0.06	19.80 ± 0.31	2.27 ± 0.07