040513 Masonry Mortaring.pdf
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- Attached to
- Upgrade 480V Electrical System Federal contract opportunity
- Solicitation number
- 36C24921R0084
About this file
This document provides specifications for masonry mortaring required for the Upgrade 480V Electrical System project at the Robley Rex VAMC in Louisville, KY. The specifications cover materials for various types of mortar mixes, including pointing mortar for new cast stone and precast concrete, mortar for glazed structural facing tile, and tuck pointing mortar for repair work. Testing requirements are defined for mortar, aggregates, and cement. Mixing instructions are provided for colored mortar to maintain a uniform color throughout exposed work. The related federal contract opportunity is to furnish all material, equipment and labor necessary to install a new 1150 KVA transformer and pad, upgrade barrier walls, and correct wiring deficiencies and move certain electrical feeds to emergency power circuits. The solicitation was issued by the Department of Veterans Affairs Veterans Health Administration VISN 9.
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Text version
Louisville KY - Robley Rex VAMC – Upgrade 480V Electrical System
Project #: 603-20-505
10-01-17
04 05 13 - 1
SECTION 04 05 13
MASONRY MORTARING
PART 1 - GENERAL
1.1 SUMMARY
A. Section Includes:
1. Masonry mortar installed by other masonry sections.
1.2 RELATED REQUIREMENTS
A. Mortar used in Section:
1. Section 04 05 16, MASONRY GROUTING.
2. Section 04 20 00, UNIT MASONRY.
3. Section 04 72 00, CAST STONE MASONRY.
1.3 APPLICABLE PUBLICATIONS
A. Comply with references to extent specified in this section.
B. ASTM International (ASTM):
1. C40/C40M-11 - Organic Impurities in Fine Aggregates for Concrete.
2. C91/C91M-12 - Masonry Cement.
3. C144-11 -Aggregate for Masonry Mortar.
4. C150/C150M-15 - Portland Cement.
5. C207-06(2011) - Hydrated Lime for Masonry Purposes.
6. C270-14a - Mortar of Unit Masonry.
7. C595/C595M-15e1 - Blended Hydraulic Cements.
8. C780-15 - Preconstruction and Construction Evaluation of Mortars for
Plain and Reinforced Unit Masonry.
9. C979/C979M-10 - Pigments for Integrally Colored Concrete.
10. C1329/C1329M-15 - Mortar Cement.
1.4 SUBMITTALS
A. Submittal Procedures: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.
B. Manufacturer's Literature and Data:
1. Description of each product.
C. Test Reports: Certify each product complies with specifications.
1. Mortar.
2. Admixtures.
D. Certificates: Certify each product complies with specifications.
1. Portland cement.
2. Masonry cement.
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3. Mortar cement.
4. Hydrated lime.
5. Fine aggregate.
6. Color admixture.
E. Qualifications: Substantiate qualifications comply with specifications.
1. Testing laboratory.
1.5 QUALITY ASSURANCE
A. Preconstruction Testing:
1. Engage independent testing laboratory to tests and submit reports.
a. Deliver samples to laboratory in number and quantity required for testing.
2. Test mortar and materials specified.
3. Mortar:
a. Test for compressive strength and water retention according to
ASTM C270.
b. Minimum Mortar compressive strengths 28 days:
1) Type M: 17.2 MPa (2,500 psi).
2) Type S: 12.4 MPa (1,800 psi).
3) Type N: 5.1 MPa (750 psi).
4. Non Staining Cement: Test for water soluble alkali.
a. Water Soluble Alkali: Maximum 0.03 percent.
5. Sand: Test for deleterious substances, organic impurities, soundness and grading.
1.6 DELIVERY
A. Deliver products in manufacturer's original sealed packaging.
B. Mark packaging, legibly. Indicate manufacturer's name or brand, type, production run number, and manufacture date.
C. Before installation, return or dispose of products within distorted, damaged, or opened packaging.
1.7 STORAGE AND HANDLING
A. Store masonry materials under waterproof covers on planking clear of ground.
1. Protect loose, bulk materials from contamination.
B. Protect products from damage during handling and construction operations.
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1.8 WARRANTY
A. Construction Warranty: FAR clause 52.246-21, "Warranty of
Construction."
PART 2 - PRODUCTS
2.1 MATERIALS
A. Hydrated Lime: ASTM C207, Type S.
B. Aggregate for Masonry Mortar: ASTM C144 and as follows:
1. Light colored sand for mortar for laying face brick.
2. White plastering sand meeting sieve analysis for mortar joints for pointing except that 100 percent passes No. 8 sieve, and maximum 5 percent retained on No. 16 sieve.
3. Test sand for color value according to ASTM C40/C40M. Sand producing color darker than specified standard is unacceptable.
C. Blended Hydraulic Cement: ASTM C595/C595M, Type IS, IP.
D. Masonry Cement: ASTM C91/C91M. Type N, S, Or M.
1. Use white masonry cement whenever white mortar is specified.
E. Mortar Cement: ASTM C1329/C1329M, Type N, S or M.
F. Portland Cement: ASTM C150/C150M, Type I.
1. Use white Portland cement wherever white mortar is specified.
G. Pigments: ASTM C979/C979M; inorganic, inert, mineral pigments only, unaffected by atmospheric conditions, nonfading, alkali resistant, and water insoluble.
H. Water: Potable, free of substances that are detrimental to mortar, masonry, and metal.
2.2 PRODUCTS - GENERAL
A. Basis of Design: Section 09 06 00, SCHEDULE FOR FINISHES.
B. Provide each product from one manufacturer
2.3 MIXES
A. Pointing Mortar for New Work:
1. For Cast Stone or Precast Concrete: Proportion by volume; one part white Portland cement, two parts white sand, and 1/5 part hydrated lime.
2. Pointing Mortar for Glazed Structural Facing Tile:
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a. Proportion by volume: One part white Portland cement, two parts of graded white sand passing Number 50 sieve, and 1/8 part hydrated lime.
B. Tuck Pointing Mortar for Repair Work: Tuck pointing mortar specified in
Section 04 01 00, MAINTENANCE OF MASONRY.
C. Masonry Mortar: ASTM C270.
1. Admixtures:
a. Do not use mortar admixtures, and color admixtures unless approved by Contracting Officer's Representative.
b. Do not use antifreeze compounds.
D. Colored Mortar:
1. Maintain uniform mortar color for exposed work, throughout.
2. Alteration Work Mortar Color: Match existing.
E. Color Admixtures:
1. Proportion as specified by manufacturer.
PART 3 - EXECUTION
3.1 PREPARATION
A. Examine and verify substrate suitability for product installation.
B. Protect existing construction and completed work from damage.
3.2 MIXING
A. Measure ingredients by volume using known capacity container.
B. Mix for 3 to 5 minutes in a mechanically operated mortar mixer.
C. Mix water with dry ingredients in sufficient amount to provide a workable mixture which will adhere to vertical surfaces of masonry units.
D. Mortar Stiffened Because of Water Loss Through Evaporation:
1. Re-temper by adding water to restore to proper consistency and workability.
2. Discard mortar reaching initial set or unused within two hours of mixing.
E. Pointing Mortar:
1. Mix dry ingredients with enough water to produce damp mixture of workable consistency retaining shape when formed into ball.
2. Allow mortar to stand in dampened condition for 60 to 90 minutes.
3. Add water to bring mortar to a workable consistency before use.
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3.3 MORTARING
A. Type S Mortar: Use for setting cast stone.
B. Type N Mortar: Use for other masonry work.
3.4 FIELD QUALITY CONTROL
A. Field Tests: Performed by testing laboratory specified in Section
01 45 29, TESTING LABORATORY SERVICES.
1. Take and test samples during progress of work according to
ASTM C780.
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