Product Overview, Instructions, & Data 4 D MORTAR Durable Famed Roman structures, such as the Pantheon, Colosseum and aqueducts, are still standing today. One secret to the long-term durability of these structures is that the Roman builders turned to volcanic ash to harness the power of pozzolans. Like Roman concrete, fly ash pozzolans in the chemically-balanced formulas of Magna Wall™ mortars react to free lime, forming additional cement binder. This leads to greater durability of the Magna Wall™ mortars. PA Mortar Mix (Add Sand, Water and Portland) Magna Wall ™
Transcript
Product Overview, Instructions, & Data
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DM ORTA R
DurableFamed Roman structures, such as the Pantheon, Colosseum and aqueducts, are still
standing today. One secret to the long-term durability of these structures is that the
Roman builders turned to volcanic ash to harness the power of pozzolans. Like Roman
concrete, fl y ash pozzolans in the chemically-balanced formulas of Magna Wall™
mortars react to free lime, forming additional cement binder. This leads to greater
durability of the Magna Wall™ mortars.
PA Mortar Mix (Add Sand, Water and Portland)
Magna Wall™
Magna Wall™ PA Mortar Mix(Add Sand, Water and Portland)(Add Sand, Water and Portland)
product Overview
A High Performance Masonry MortarIntroducing Magna Walls’ pozzolanic advantage with Magna Wall™ PA Mortar Mix
Magna WallTM PA Mortar Mix shares many of the chemical characteristics of the Roman cement used to build the famed Pantheon and Roman aqueducts. This product has high bond strength like traditional Portland/Lime mixes, yet with a greater resistance to water penetration and greater board life than traditional Portland/Lime mixes. Magna WallTM PA Mortar Mix is designed to be mixed with one, 94-lb bag of Portland cement to produce the equivalent of two bags of mortar mix.
For production of ASTM C270 Type S Mortar Cement, add one bag of Portland cement, 4.5 to 6 cubic feet of ASTM C144 sand and approximately 10.5 gallons of water. Note: While the amount of hydrated lime used in a traditional mix can be varied, the amount of PA Mortar Mix should not be varied. Also, this product was not designed to be used with slag cements or with blended hydraulic cements.
A Green, User Friendly-Mortar
By using fl y ash, this mortar is one of the greenest mortar materials available. While this would be enough to justify using this product, it carries with it several additional benefi ts. When Portland cement hydrates, very fi ne particles of hydrated lime are given off. Often as much as 20% to 25% of the weight of the Portland cement is given off in the form of fi ne hydrated lime. Since the pozzolan combines with the lime, the amount of lime available to migrate to the surface and cause effl orescence is reduced. When the lime and the pozzolan combine, they form additional cement binder, which leads to greater strength. This strength gain can continue for an extended period of time.
Since the pozzolan particles are spherical and do not absorb water, the amount of water used to produce a batch of mortar is reduced. This produces a more favorable water/cement ratio, which means that to gain the same strength, fewer raw materials that produce carbon dioxide during their manufacture are used.
Net Weight: 63 lb.
GreenMagna Wall™ mortars provide the
Pozzolanic Advantage, and are also the
greenest mortars on the market. The use of
fl y ash – a recovered resource – reduces
depletion of natural resources and
conserves landfi ll space. It also reduces
the energy-intensive manufacturing of other
concrete ingredients resulting in reduced
green house gas emissions.
p. 2
Magna WallTM PA Mortar Mix shares many of the chemical characteristics of the Roman cement used to build the famed Pantheon and Roman aqueducts. This product has high bond strength like traditional Portland/Lime mixes, yet with a greater resistance to water penetration and greater board life than traditional Portland/Lime mixes. Magna WallMix is designed to be mixed with one, 94-lb bag of Portland cement to produce the equivalent of two bags of mortar mix.
For production of ASTM C270 Type S Mortar Cement, add one bag of Portland cement, 4.5 to 6 cubic feet of ASTM C144 sand and approximately 10.5 gallons of water. Note: While the amount of hydrated lime used in a traditional mix can be varied, the amount of PA Mortar Mix should not be varied. Also, this product was not designed to be used with slag cements or with blended hydraulic cements.
A Green, User Friendly-Mortar
By using fl y ash, this mortar is one of the greenest mortar materials available. While this would be enough to justify using this product, it carries with it several additional benefi ts. When Portland cement hydrates, very fi ne particles of hydrated lime are given off. Often as much as 20% to 25% of the weight of the Portland cement is given off in the form of fi ne hydrated lime. Since the pozzolan combines with the lime, the amount of lime available to migrate to the surface and cause effl orescence is reduced. When the lime and the pozzolan combine, they form additional cement binder, which leads to greater strength. This strength gain can continue for an extended period of time.
Since the pozzolan particles are spherical and do not absorb water, the amount of water used to produce a batch of mortar is reduced. This produces a more favorable water/cement ratio, which means that to gain the same strength, fewer raw materials that produce carbon dioxide during their manufacture are used.
Net Weight: 63 lb.
GreenMagna Wall™ mortars provide the
Pozzolanic Advantage, and are also the
greenest mortars on the market. The use of
fl y ash – a recovered resource – reduces
depletion of natural resources and
conserves landfi ll space. It also reduces
the energy-intensive manufacturing of other
concrete ingredients resulting in reduced
green house gas emissions.
p. 2
Magna Wall™ PA Mortar Mix(Add Sand, Water and Portland)(Add Sand, Water and Portland)
product instructions
Mixing Instructions:
Use one bag of Portland cement, one bag of PA Mortar Mix, and 4.5 to 6.0 cubic feet of sand. Depending on the sand and the Portland cement used, the water demand will vary, but will be close to 10.5 gallons for the two bags. Do not add any additives except integral water-proofers and pigments. If an integral water-proofer or pigment is added, it should be added after the initial sand has been added and before the Portland cement is added.
1. Add 75% to 90% of the water that will be needed (7.5 to 9.5 gallons). 2. Add 1⁄4 to 1⁄2 of the sand. 3. Add the PA Mortar Mix. 4. Add Portland cement. 5. Add remaining sand.6. Add additional water for the desired consistency. 7. Mix for not less than 3 minutes after all ingredients are added to the mixer. 8. Mixing over 5 minutes may entrain excess air.
Standards:
Mix one bag of PA Mortar Mix with 94 pounds of Portland cement. The mix complies with the following standards: • 2 bags of ASTM C1329 Type S Mortar Cement • 2 bags of ASTM C91 Type S Masonry Cement
When mixed with one bag of Portland cement and 4.5 to 6 cubic feet of ASTM C144 masonry sand, it meets the proportion requirements (ASTM C270 Table I) for Type S mortar.
The Pozzolanic AdvantageAs the Romans learned, pozzolans like
those used in Magna Wall™ mortars bring
many advantages including:
Increased Workability
Growth in Strength
Water Resistance
Increased Flexural Strength
Reduced Effl orescence
p. 4
6.0 cubic feet of sand. Depending on the sand and the Portland cement used, the water demand will vary, but will be close to 10.5 gallons for the two bags. Do not add any additives except integral water-proofers and pigments. If an integral water-proofer or pigment is added, it should be added after the initial sand has been added and before the Portland cement is added.
1. Add 75% to 90% of the water that will be needed (7.5 to 9.5 gallons). 2. Add 1⁄4 to 1⁄2 of the sand. 3. Add the PA Mortar Mix. 4. Add Portland cement. 5. Add remaining sand.6. Add additional water for the desired consistency. 7. Mix for not less than 3 minutes after all ingredients are added to the mixer. 8. Mixing over 5 minutes may entrain excess air.
Standards:
Mix one bag of PA Mortar Mix with 94 pounds of Portland cement. The mix complies with the following standards:
• 2 bags of ASTM C1329 Type S Mortar Cement • 2 bags of ASTM C91 Type S Masonry Cement
When mixed with one bag of Portland cement and 4.5 to 6 cubic feet of ASTM C144 masonry sand, it meets the proportion requirements (ASTM C270 Table I) for Type S mortar.
The Pozzolanic AdvantageAs the Romans learned, pozzolans like
those used in Magna Wall™ mortars bring
many advantages including:
Increased Workability
Growth in Strength
Water Resistance
Increased Flexural Strength
Reduced Effl orescence
p. 4
product DATA
ASTM C91 ..................................24% Maximum
ASTM C1329 ..............................24% Maximum
MW PA Mortar Mix .....................14.4%
ASTM C91 ..................................1% Maximum
ASTM C1329 .............................1% Maximum
MW PA Mortar Mix .....................-0.045%
Initial Set, Minimum Final Set, Maximum
ASTM C91 Not less than 2 hrs Not more than 24 hrs
ASTM C1329 Not less than 1.5 hrs Not more than 24 hrs
A. Fineness: This is determined by screening the unmixed mortar through a No. 325 sieve.
B. Autoclave Expansion:This test is used to predict the long-term hydration of unhydrated particles. This in turn predicts long-term durability.
C. Time of Setting:Mortar must remain workable to give masons time to use it and tool joints. But if it fails to fi rm set within 24 hours, the number of courses of brick laid per day may be reduced. Normally the faster the set the harder it is to clean the brick after the mortar has set.
D. Compressive Strength:Compressive strength is the main criterion for select-ing a mortar, if holding brick apart is the primary concern. Magna Wall™ PA Mortar Mix Type S ex-ceeds the ASTM standards and continues to gain strength over time. The chart below shows that we usually see a 20% strength gain from 28 days to 90 days. Most conventional masonry cements and Portland/Lime blends show less than 5% strength gain between 28 days and 90 days.
E. Flexural Bond Strength:Bond strength and extent of bond are the main cri-teria for selecting a mortar, if the ability to bind brick together is the primary concern. While extent of bond as a parameter cannot be incorporated into a mortar, workability can be incorporated. With good workability, a skilled mason can lay brick with full head and bed joints and have a very high extent of bond. Headwaters Construction Ma-terials designs cements to impart impressive bond strength and to be suffi ciently workable to allow a high extent of bond. A positive by-product of high bond strength and high extent of bond is water re-sistance, since most leakage through a brick wall is at the interface between the brick and mortar or in areas where the mortar was inadvertently omit-ted. The limits for fl exural bond strength for mortar cements is based on data developed while testing Portland/Lime mortars.
MW PA Mortar Mix ...........................................90%
A HEADWATERS COMPANY
F. Water Retention:Mortar is affected by water retention in three ways:The greater the water retention, the longer the mortar remains workable. With a longer working time, the mason does not have to stop to retemper the mortar. This, in turn, increases effi ciency and lowers cost. MW PA Mortar Mix Type S is formulated to remain workable. Ultimate compressive strength and bond strength are reduced with each retempering. MW PA Mortar Mix Type S does not need retempering as often as conventional mortars; therefore, it retains its ultimate strength better. When using block or brick with high initial rate of absorption, the block or brick can dehydrate the mortar before it sets chemically. This reduces the bond strength and the compressive strength signifi cantly when using a low-water-retentive mortar. MW PA Mortar Mix Type S has high water retention, and thus does not dehydrate before chemical hydration occurs.
H. Water Penetration:There are no limits in ASTM C91, ASTM C1329, nor ASTM C270 concerning water penetration. ASTM E514 utilizes a 12+ square foot test chamber and applies water and air pressure to simulate 5 inches of rainfall per hour and a 60 mile-per-hour wind (near hurricane conditions) for a period of 4 hours. Water that passes through the wall is collected and measured. This test is a refl ection of bond strength, extent of bond, fullness of mortar joints, workability of the mortar, and workmanship.
I. 24-hour Cold Water Absorption:There are no limits placed on mortar by ASTM concerning 24-hour cold water absorption. Many architects specify that a water repellent be added to reduce absorption. Since this is often done at a job site, the potential exists for the water repellent to be skipped.
p. 6
G. Entrained Air:Air content affects workability, yield, compressive strength, and bond strength. Masons want a high air content to increase workability and yield. If a mortar contains 20% entrained air; that means that 20% of the paste has been replaced with non-bond-forming air. MW PA Mortar Mix obtains much of its workability from the spherical shape of the pozzolanic particles that are incorporated during the manufacturing process.
Minimum Maximum
ASTM C91 8% 19%
ASTM C1329 8% 15%
MW PA Mortar Mix 10 to 12%
Conventional masonry cement ..............................commonly 100 to 700 ml per ft2 per hr.
Portland/Lime mortar .........................................0 to a few ml per ft2 per hr.
MW PA Mortar Mix ...........................................0 to a few ml per ft2 per hr.
