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Div. 03300  |
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Guide Spec. No. 378
SEALTIGHT® LIQUI-HARD®
| Specifier Notes: This guide specification is written according to the Construction Specifications Institute (CSI) Format. The section must be carefully reviewed and edited by the Architect or Engineer to meet the requirements of the project. Coordinate this section with other specification sections and the drawings. |
| Specifier Notes: W.R. Meadows SEALTIGHT LIQUI-HARD Concrete Densifier and Chemical Hardener is a ready-to-use, colorless, liquid concentration of 100 percent active chemicals that deeply penetrate the concrete surface for use in producing hardened, dustproof, and improved chemically-resistant surfaces. |
PART 1 GENERAL
1.1 SECTION INCLUDES
- A. Concrete densifier and chemical hardener.
1.2 RELATED SECTIONS
| Specifier Notes: Edit the list of related sections as required for the project. List other sections dealing with work directly related to this section. |
- A. Section 03300 - Cast-in-Place Concrete.
1.3 SUBMITTALS
- A. Comply with Section 01330 - Submittal Procedures.
B. Submit manufacturer's product data and application instructions.
1.4 DELIVERY, STORAGE, AND HANDLING
- A. Delivery: Deliver materials to site in manufacturer's
original, unopened containers and packaging, with labels clearly identifying
product name and manufacturer.
B. Storage: Store materials in a clean dry area in accordance with manufacturer's instructions. Keep containers sealed until ready for use. Keep from freezing.
C. Handling: Protect materials during handling and application to prevent damage or contamination.
1.5 ENVIRONMENTAL REQUIREMENTS
- A. Do not apply concrete densifier and chemical hardener when concrete temperature is below 35 degrees F (2 degrees C) or above 135 degrees F (57 degrees C).
PART 2 PRODUCTS
2.1 MANUFACTURER
- A. W.R. Meadows, Inc., PO Box 338, Hampshire, Illinois 60140-0338. (800) 342-5976. (847) 683-4500. Fax (847) 683-4544. Web Site www.wrmeadows.com.
2.2 MATERIALS
A. Concrete Densifier and Chemical Hardener: SEALTIGHT LIQUI-HARD Concrete Densifier and Chemical Hardener Compound.
1. VOC Content: Meets maximum VOC content limit of 400 g/L for concrete protective coatings as required by US EPA Architectural Coatings Rule.
PART 3 EXECUTION
3.1 EXAMINATION
- A. Examine concrete surfaces to receive concrete densifier and chemical hardener. Notify Architect if surfaces are not acceptable. Do not begin surface preparation or application until unacceptable conditions have been corrected.
3.2 SURFACE PREPARATION
- A. Prepare surfaces in accordance with manufacturer's
instructions.
B. New Concrete: Wait a minimum of 72 hours after placement of concrete before applying concrete densifier and chemical hardener. Ensure surface is dry and free of dirt, dust, oil, grease, residue, curing compounds, sealers, waxes, contaminants, and laitance.
C. Existing Concrete: Ensure surface is dry, structurally sound, and free of dirt, dust, oil, grease, residue, sealers, waxes, contaminants, and laitance. Repair holes, cracks, and deteriorated areas.
3.3 APPLICATION
- A. Apply concrete densifier and chemical hardener
in accordance with manufacturer's instructions.
B. Ensure application equipment is clean and free of previously used materials.
C. Do not dilute concrete densifier and chemical hardener.
3.4 PROTECTION
- A. Protect horizontal surfaces from foot traffic for a minimum of 12 hours after application of concrete densifier and chemical hardener.