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SECTION 03 54 16 – hydraulic cement underlayment

PART 1 - GENERAL

1.01RELATED DOCUMENTS

  1. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.
  2. Specifications throughout all Divisions of the Project Manual are directly applicable to this Section, and this Section is directly applicable to them.

1.02REFERENCE STANDARDS

  1. The latest published edition of a reference shall be applicable to this Project unless identified by a specific edition date.
  2. All reference amendments adopted prior to the effective date of this Contract shall be applicable to this Project.
  3. All materials, installation and workmanship shall comply with all applicable requirements and standards.

1.03QUALITY ASSURANCE

  1. Concrete Supplier: Regularly engaged in production of concrete floor underlayments.
  2. Concrete Applicator: Regularly engaged and properly equipped for application of concrete floor underlayments, and as acceptable by aggregate manufacturer.

1.04SUBMITTALS

  1. Product Data:
  2. Product data in the form of manufacturer's technical data, specifications, and installation instructions.

1.05DELIVERY, STORAGE and HANDLING

  1. Deliver materials in manufacturer's original undamaged packages or acceptable bulk containers.
  2. Store packaged materials to protect them from elements or physical damage.
  3. Do not use cement which shows indications of moisture damage, caking, or other signs of deterioration.

1.06project CONDITIONS

  1. Do not place concrete when ambient temperature is below freezing (32 degrees F, 0 degrees C).

PART 2 - PRODUCTS

2.01GENERAL

  1. All materials shall meet or exceed all applicable referenced standards, federal, state and local requirements, and conform to codes and ordinances of authorities having jurisdiction.

2.02MATERIALS

  1. Underlayment Compound: Free-flowing, self-leveling, pumpable, cement-based compound for applications from 1 inch thick to feathered edges.
  2. Ardex, Inc. "K-15"
  3. Conspec Marketing and Mfg. Co. "Conflow"
  4. Dayton Superior Corp. "LevelLayer II"
  5. Euclid Chemical Co. "Flo-Top"
  6. L&M Construction Chemicals, Inc. "Levelex"
  7. Master Builders, Inc. "Pourcrete"
  8. Sonneborn, "SonoFlow".
  9. Primer: Provide manufacturer's recommended primer for each applicable substrate.

2.03MIXING

  1. Provide batch type mechanical mixer for mixing topping material at the ProjectSite. Equip batch mixer with a suitable charging hopper, water storage tank, and a water-measuring device. Use only mixers which are capable of mixing aggregates, cement, and water into a uniform mix within specified time, and of discharging mix without segregation.

PART 3 - EXECUTION

3.01INSTALLATION

  1. Installation shall meet or exceed all applicable federal, state and local requirements, referenced standards and conform to codes and ordinances of authorities having jurisdiction.
  2. All installation shall be in accordance with manufacturer’s published recommendations.
  3. Place underlayment in accordance with manufacturer's instructions, using equipment and procedures to avoid segregation of mix and loss of air content. Deposit and screed in a continuous operation until an entire panel or section of floor area is completed. Do not vibrate or work mix except for screeding or floating.

3.02PLACING

  1. Spread topping mixture evenly over prepared base to the required elevation and strikeoff. Use highway straightedge, bull float, or darby to level surface. After the topping has stiffened sufficiently to permit the operation, and water sheen has disappeared, float the surface at least twice to a uniform sandy texture. Restraighten where necessary with highway straightedge. The surface shall achieve an FF20/FL17 tolerance when tested in accordance with ASTM E 1155. Uniformly slope surface to drains.
  2. Where joints are required, construct to match and coincide with joints in base slab. Provide other joints as shown.
  3. After floating, begin first trowel finish operation using power driven trowels. Continue troweling until surface is ready to receive final troweling. Begin final troweling when a ringing sound is produce as trowel is moved over surface.
  4. Continue final trowel operation to produce finished surface free of trowel marks, uniform in texture and appearance, achieving an FF25/FL20 when tested in accordance with ASTM E 1155.

3.03CURING AND PROTECTION

  1. Cure and protect topping applications and finishes as specified by the topping manufacturer.

3.04PERFORMANCES

  1. Failure of concrete topping to bond to substrate (as evidenced by a hollow sound when tapped), or disintegration or other failure of topping to perform as a floor finish, will be considered failure of materials and workmanship. Repair or replace toppings in areas of such failures, as directed.

END OF SECTION 03 54 16

The University of Texas / hydraulic cement underlayment
MD AndersonCancerCenter / 03 54 16
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