Author: Reed B. FreemanPublisher:
ISBN:
Category : Cement
Languages : en
Pages : 102
Book Description
Evaluation of Hydraulic Cement-based Materials for Rapid Repair of Airfield Spalls
Author: Reed B. FreemanPublisher:
ISBN:
Category : Cement
Languages : en
Pages : 102
Book Description
Laboratory Evaluation of Expedient Pavement Repair Materials
Author: Raymond S. RollingsPublisher:
ISBN:
Category : Cement
Languages : en
Pages : 100
Book Description
Past work and current technical literature were reviewed to determine potential capping materials for expedient repair of small craters (less than 20 by 20 feet repair areas) in airfield pavements. Seven materials identified in the literature review were tested in the laboratory to develop information on their strength and cure requirements. Accelerated high alumina cement, magnesium phosphate cement, three commercial asphalt products and unsurfaced, well compacted aggregate were recommended for field testing as the most promising small crater repair materials. (Author).
Evaluation of Rapid-setting Cementitious Materials and Testing Protocol for Airfield Spall Repair
Author: Monica A. RamseyPublisher:
ISBN:
Category : Cement composites
Languages : en
Pages : 102
Book Description
Evaluation of Rapid-setting Concretes for Airfield Spall Repair
Author: Lillian D. WakeleyPublisher:
ISBN:
Category : Concrete
Languages : en
Pages : 32
Book Description
A Concept for Rapid Repair of Bomb-damaged Runways Using Regulated-set Cement
Author: George C. HoffPublisher:
ISBN:
Category : Bombs
Languages : en
Pages : 168
Book Description
Evaluation of Rapid Setting Cement-Based Materials for Patching and Repair
Author: Amit D. BardePublisher:
ISBN: 9781622601363
Category :
Languages : en
Pages :
Book Description
Investigation of Spall Repair Materials for Concrete Pavement
Author: Publisher:
ISBN:
Category : Pavements, Concrete
Languages : en
Pages : 162
Book Description
This project investigated the properties and performance of the products used for spall repair of concrete pavement. A survey of Texas Department of Transportation (TxDOT) maintenance engineers produced a roster of 10 repair materials currently in use in the state. After identifying the key characteristics of a successful repair material, a laboratory testing program was developed to evaluate the properties of the repair materials. These materials were tested for strength, compatibility, and bond to quantify their characteristics relative to those products known to work well.
Spall Repair of Wet Concrete Surfaces
Author: J. Floyd BestPublisher:
ISBN:
Category : Concrete
Languages : en
Pages : 40
Book Description
Because of the nature of the hydraulic structures over which the Army Corps of Engineers has responsibility, there are frequent requirements to repair spalled or eroded concrete that is underwater, close to the waterline, or in areas from which it is difficult to divert flow or dry the concrete. This investigation evaluated the effectiveness of commercially available products in repair of concrete with wet surfaces. Slant-shear bond and compressive strength tests were conducted on each of the 22 materials recommended for repair of spalls in wet concrete. Based on the results of these screening tests, eight materials were selected for additional laboratory tests including: a) bonding capacity in direct tension; b) bonding capacity under flexural stress; c)resistance to abrasion; d) resistance to cycles of freezing and thawing; e) impact resistance; and f) thermal capability with concrete. Test results and material costs were used in developing a rating system to compare the relative performance of the various materials. Overall performance ratings indicate two materials, an epoxy and a cement-based product, were nearly equal in outperforming the other products tested. Which of these two materials is to be specified for a given repair will likely depend on the specific project requirements and critical material properties. Concrete repair. (edc).
A Value-focused Thinking Model for the Selection of the Best Rigid Pavement Partial-depth Spall Repair Material
Author: Benjamin G. SpeerPublisher:
ISBN:
Category : Decision making
Languages : en
Pages : 186
Book Description
Rapid Runway Repair (RRR) In-House Test and Evaluation
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 335
Book Description
The U.S. Air Force has conducted research and development work since the early 1960s to improve the capability to repair bomb damaged airfields. As part of the in-house testing for the Rapid Runway Repair (RRR) Program, the Air Force Engineering and Services Center (AFESC) has conducted Development, Test and Evaluation on interim systems for crater and spall repairs. The two interim crater repair methods, precast slab and fiberglass mat over crushed stone, were tested. The precast slab tests were conducted in two phases, using two generations of the slab technology. The fiberglass mat over crushed stone tests compared two different polyurethane resins for use in rainy or high water table conditions. In addition to these tests of the repair methods, a comparative test of compaction equipment performance was conducted. The final test series evaluated the proposed polymer concrete formulations for the interim spall repair system, including water-tolerant polyurethane, furfuryl alcohol, and magnesium polyphosphate.