Specialist mortars and puttys for the construction and conservation industry
Latest Update: 01/2008

Typical Expected Mortar Performance Values


1Mortar Code See Pages 6-11 Lime Binder 3Resistance to Freeze Thaw
(90 days)
7Resistance to Sulfate Exposure
(90 Days)
7Resistance to Freeze Thaw in Sulfate Conditions
(90 days)
6Carbonation Rate 4Capillary Rise
(mm rise @ 6 hours)
8Typical Compressive Strength
7 days / 28 days MPa
Flexural Strength
28 Days / 6 Months MPa
5Vapour Permeability complete carbonation
(gr of air x m2 x hour x mm HG)
Mix Ratio By Volume Mortar1&2 Durability
SA512 NHL5 Very High
(>50 cycles)
Very High
(>50 cycles)
Very High
(>50 cycles)
Low Very Low
(<51)
1.96 / 2.2 0.53 / 2.2 0.5 1:2 9 -10
OB512 NHL5 0.65 1:2
SA525 NHL5 1 / 2 0.38 / 1.75 0.55 2:5
OB525 NHL5 Moderate Low
(51 - 75)
0.64 2:5
SA513 NHL5 High
(26 - 50 cycles)
Low 0.88 / 1.5 0.4 / 1.55 0.52 1:3 7 - 8
OB513 NHL5 Moderate 0.72 1:3
SA312 NHL3.5 High
(26 - 50 cycles)
Low 0.75 / 1.88 0.43 / 2.18 0.65 1:2 5 - 6
SA325 NHL3.5 Moderate Moderate
(76 - 100)
0.57 / 1.47 0.31 / 1.7 0.64 2:5
SA313 NHL3.5 Moderate
(10 - 25 cycles)
Moderate
(10 - 25 cycles)
0.53 / 1.34 0.28 / 1.38 0.72 1:3 3 - 4
SA212 NHL2 Low
(< 10 cycles)
High
(26 - 50 cycles)
Low
(<10)
High High (101 - 125) 0.62 / 1.48 0.28 / 1.28 0.68 1:2 3 - 4
OB212 NHL2 Moderate
(10 - 25 cycles)
Very High
(> 50 cycles)
Moderate
(10-25 cycles)
Moderate
(76 - 100)
0.7 / 1.67 0.31 / 1.44 0.64 1:2 5 - 6
SA225 NHL2 Low
(<10 cycles)
High
(26 - 50 cycles)
Low
(<10)
High
(101 - 125)
0.53 / 1.36 0.31 / 1.2 0.71 2:5 3 - 4
OB225 NHL2 0.59 / 1.53 0.35 / 1.35 0.65 2:5 3 - 4
SA213 NHL2 Very High
(126 - 150)
0.47 / 1.25 0.25 / 1.08 0.74 1:3 1 - 2
OB213 NHL2 0.53 / 1.41 0.28 / 1.22 0.72 1:3 1 - 2
MM103* Lime Putty N/A / 0.50 N/A / 0.35 0.90 1:3 1 - 2
MM103* Lime Putty 2:5 1 - 2

Gauged Lime Putty mortar performance depends on gauging used. – Workmanship, site curing and water content of mixes can affect performance.


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