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SECTION 03315
RAPID DRYING CONCRETE
 
 
Copyright 2016 - 2016 ARCAT, Inc. - All rights reserved
** NOTE TO SPECIFIER ** U.S. Concrete, Inc.; ready-mixed concrete and aggregate products.
This section is based on the products of U.S. Concrete, Inc., which is located at:
U.S. Concrete, Inc.
331 N. Main Street
Euless, TX 76039
Phone: 817-835-4105
Email: _____________
Web: www.us-concrete.com
click Herefor additional information
U.S. Concrete, Inc. operates and sells its products and services in the United States. We take pride in seeking harmony with the environment while contributing to the building of contemporary societies, infrastructures, and high-profile projects that improve people's lives and connect them together.
Through our operating companies, U.S. Concrete serves major construction markets in the United States in two business segments: ready-mixed concrete and aggregate products. The Company provides its products and services from its operating companies in North and West Texas, Northern California, New Jersey, New York, Washington, D.C. and Oklahoma..
U.S. Concrete's National Research Laboratory has significantly advanced the performance of concrete and driven the creation of new, innovative and cost-effective solutions that are making an impact today.
 
PART 1 GENERAL
 
1.1
SECTION INCLUDES
A.
Materials and procedures for rapid drying concrete; for floors that receive moisture sensitive coverings or adhesives.
1.2
RELATED SECTIONS
 
** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
 
A.
Section 03300 - Cast-In-Place Concrete.
B.
Section 03330 - Architectural Cast In Place Concrete.
1.3
REFERENCES
 
** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
 
A.
American Concrete Institute (ACI).
B.
ASTM International (ASTM):
1.
ASTM F 710: Standard Practice for Preparing Concrete Floors to Receive Resilient Flooring.
2.
ASTM F 1869: Standard Test Method for Measuring Moisture Vapor Emission Rate of Concrete Subfloor Using Anhydrous Calcium Chloride.
3.
ASTM F 2170: Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes.
C.
International Concrete Repair Institute (ICRI).
D.
National Institute of Standards and Technology (NIST).
1.4
SUBMITTALS
A.
Submit under provisions of Section 01300.
B.
Product Data: Manufacturer's data sheets on each product to be used, including:
1.
Preparation instructions and recommendations.
2.
Instructions for storage and use.
1.5
QUALITY ASSURANCE
A.
Manufacturer Qualifications:
1.
Capable of producing concrete that will provide an internal relative humidity of 80 percent when evaluated with a manufacturer approved probe in accordance with ASTM F 2170, and that meets construction timelines for concrete drying.
2.
Capable of producing concrete that provides an MVER of 5 lbs /1000 sf /24 hrs when evaluated with a manufacturer approved kit in accordance with ASTM F 1869.
3.
Capable of submitting 28, 45 and 90 day test results for internal relative humidity and MVER.
B.
Technician Qualifications: Technicians evaluating the internal relative humidity and moisture vapor emissions rate of the concrete shall be certified as follows.
1.
International Concrete Repair Institute (ICRI) Concrete Moisture Testing Technician - Grade I.
2.
ACI Concrete Field Testing Technician - Grade I.
1.6
DELIVERY, STORAGE, AND HANDLING
A.
Deliver, store and handle materials and products in strict compliance with manufacturer's instructions and recommendations.
B.
Store materials within recommended limits for temperature and humidity recommended by manufacturer. Protect from damage.
1.7
PROJECT CONDITIONS
A.
Field Measurements: Verify field measurements as indicated on Shop Drawings. Where measurements are not possible, provide control dimensions and templates.
B.
Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's recommended limits.
1.8
SEQUENCING AND SCHEDULING
A.
Sequencing and Scheduling: Mandatory preconstruction meeting.
1.
Schedule a mandatory meeting with the manufacturer of the rapid drying concrete shall be held at least one week prior to placement to discuss materials, placing, finishing, curing and project technical services.
1.9
WARRANTY
A.
Manufacturer's Warranty: Submit for the owner's acceptance manufacturer's standard limited warranty document executed by a company official of the authorized company. Manufacturer's warranty is in addition to, and not a limitation of other rights owner may have under contract documents.
PART 2 PRODUCTS
 
2.1
MANUFACTURERS
A.
Acceptable Manufacturer: ARIDUS(R) Rapid Drying Concrete, which is located at: 331 N. Main St.; Euless, TX 76039; Toll Free Tel: 866-882-6176; Tel: 817-835-4105; Fax: 817-835-4165; Email: request info (info@us-concrete.com); Web: ARIDUSconcrete.com
 
** NOTE TO SPECIFIER ** Alternative systems shall have an acceptable service record and provide proof of construction timeline compliance. Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
 
B.
Substitutions: Not permitted.
C.
Requests for substitutions will be considered in accordance with provisions of Section 01600.
1.
PRODUCTS
D.
Rapid Drying Concrete Products: ARIDUS as manufactured by US Concrete, Inc.
1.
Application: For floors that receive moisture-sensitive coverings or adhesives.
2.
Testing for Concrete Mixture: Until requirements specified herein are met.
E.
Performance Requirements: In compliance with the following.
1.
Fresh Concrete Performance Requirements:
a.
Maximum Slump or Slump Flow: Dictated by the placement site.
b.
Maximum Water to Concrete Ratio: Less than manufacturer approved limit, 0.40.
c.
Concrete shall not be placed at a consistency that produces segregation.
d.
Air Content: Shall be less than 3 percent for normal weight concrete that is not subject to freezing and thawing cycles during construction or in service.
2.
Hardened Concrete Performance Requirements:
 
** NOTE TO SPECIFIER ** Retain only one option for compressive strength of concrete at 28 days.
 
a.
Compressive Strength (at 28 days): As scheduled and indicated on Drawings.
b.
Compressive Strength (at 28 days): Not less than 3000 psi (20 MPa).
c.
Compressive Strength (at 28 days): Not less than 4000 psi (27.5 MPa).
d.
Rapid-Drying Concrete shall achieve an internal relative humidity (IRH) equal to or less than or equal to 80 percent in 45 days using ASTM F 710 procedures.
e.
Rapid-Drying Concrete shall achieve a Moisture Vapor Emission Rate (MVER) equal to or less 5lb / 1000sf / 24hrs using ASTM F 710 procedures.
PART 3 EXECUTION
 
3.1
EXAMINATION AND PREPARATION
A.
Verification of Conditions: Verify that field measurements, surfaces, substrates and conditions are as required, and ready to receive Work.
B.
Prepare substrates using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
1.
Floor Preparation: Prepare the floor in accordance with ASTM F 710; Determination of IRH per ASTM F2170 and MVER per ASTM F1869.
C.
Do not proceed with installation until substrates have been properly prepared and deviations from manufacturer's recommended tolerances are corrected. Commencement of installation constitutes acceptance of conditions.
D.
If preparation is the responsibility of another installer, notify Architect in writing of deviations from manufacturer's recommended installation tolerances and conditions
3.2
INSTALLATION AND TESTING
A.
Installation: Comply with manufacturer's installation instructions and approved submittals and requirements of Section 03300 - Cast-n-Place Concrete.
B.
Testing: Record and report all results.
1.
Shall be performed by an independent lab appointed by the owner and shall be performed by ICRI Moisture Testing Technician Grade 1.
2.
Shall take place after allowing concrete to dry for a minimum of 45 days after building enclosure with HVAC on for 48 hrs.
3.
Test in-situ concrete in accordance with ASTM F1869 with manufacturer approved kits as manufactured by Vaprecision, Inc. or equivalent.
4.
Test in- situ concrete in accordance with ASTM F2170 with manufacturer approved probes, HMP4OS as manufactured by Vaisala.
5.
Calibration of Relative Humidity Sensors: NIST traceable factory calibration Calibrated relative humidity sensors with digital display.
6.
Moisture Vapor Emission Rate Kits: Calcium chloride must be of proper grade outlined in ASTM F1869.
3.3
CLEANING AND PROTECTION
A.
Clean exposed surfaces. Touch up, refinish, or replace damaged components in a manner acceptable to Architect.
B.
Protect installed products until completion of project.
C.
Repair or replace defective work as directed by Architect upon inspection.
END OF SECTION