Author: Gene E. CarrollPublisher:
ISBN:
Category :
Languages : en
Pages : 196
Book Description
Development Test of Rapid Repair Techniques for Bomb-damaged Runways
Author: Gene E. CarrollRapid Repair of Bomb-damaged Runways
Author: W. G. SetserPublisher:
ISBN:
Category : Military bases
Languages : en
Pages :
Book Description
Development and Testing of Rapid Repair Methods for War Damaged Runways
Author: Paul A. SoaresA 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
Rapid Repair of Bomb-Damaged Runways. Phase I. Preliminary Laboratory Investigation
Author: P. S. BussonePublisher:
ISBN:
Category : Cement
Languages : en
Pages : 35
Book Description
Three cements have been studied for possible use in the rapid repair of bomb-managed runways. These are: (a) lumnite (L), a high-alumina cement which was blended with portland cements type I, II, and III, regulated-set cement, and other concrete admixtures; (b) regulated-set cement (R), a halogenated calcium aluminate cement which was blended with gypsum additives in varying amounts from 0 to 12.5 percent and also mixed with an accelerator, sodium metasilicate (SMS); and (c) ordinary portland cement with various accelerators, Sigunit (S), sodium metasilicate (SMS), and sodium carbonate. Compressive strength of 2-in. cubes were determined at ages varying from 45 min to 28 days to establish strength development information. With some cements, neat slurry grout-type mixtures were made and tested in the same manner as the mortar mixtures. Water-cement ratios varied from 0.50 to 0.70 for the mortar mixtures and flow, when measured, was determined by the flow table method. With the neat slurry mixtures w/c ratios varied from 0.30 to 0.80, the efflux time being measured by the flow-cone method. The results indicate the following: (a) that many of the accelerators and so-called fast-setting cements do not develop 1-hour strengths sufficient for use in rapid repair of bomb-damaged runways; (b) two materials studied have yielded 1-hour compressive strengths in excess of 1000 psi. One is a cement, regulated-set, a proprietary product of the Portland Cement Association, and the second is an accelerator, known as sodium metasilicate, which has shown promise in both mixtures of ordinary portland and regulated-set cements.
Development and Testing of Rapid Repair Methods for War Damaged Runways
Author: Paul A. SoaresRapid Repair of Bomb-damaged Runways
Author: G. T. PruittPublisher:
ISBN:
Category :
Languages : en
Pages : 173
Book Description
The work covered in this volume (II) includes the design, fabrication and testing of equipment to dispense Fast-Fix at rates up to 1000 gpm, and the demonstration of the overall material-equipment-procedure combination at Eglin Air Force Base. The equipment developed to perform the dispensing function consisted of a jet-eductor mixing system supplied with metered Fast-Fix cements from a screw-feed solids hopper and with mixing water from a speed-controlled water pump. The mixing unit was trailer mounted, powered with V-12 diesel engines and incorporated in an all hydraulic drive system. Solids were continuously supplied at a rate of 12,000 pounds per minute by a series of dump trucks via an external solids feeder. Design, fabrication and developmental testing were conducted on an accelerated basis. (Author).
Structural Repair of Bomb Damage to Airfield Runways
Author: Jimmy H. SmithPublisher:
ISBN:
Category :
Languages : en
Pages : 202
Book Description
The purpose of this research is to develop techniques for rapidly repair-ing bomb damaged runways. Structural concepts for filling and/or spanning the crater are studied. Spanning systems, such as clear span and intermediate support systems, structural fill systems including inter- locking fills, and waterbag systems are considered as possible solutions. Only one concept, a honeycomb structural fill technique, fulfills the requirements of simplicity, speed, and dependability to merit further testing. This technique consists of filling a large portion of the crater with several modules constructed of interconnected, vertically placed polyvinyl chloride (PVC) pipes. Laboratory tests are conducted on bonding agents, capacity of individual pipe, several different size modules, and various module arrangements. The F-111 aircraft wheel loads are considered as the design loading. Results of these tests lead to a PVC module design for full-sclae field tests. A small preliminary field test indicates that the repair technique is feasible. (Author-PL).
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.
The Secretary of Defense ... Research, development, test, and evaluation programs. 1965. 1261 p
Author: United States. Congress. Senate. Committee on AppropriationsPublisher:
ISBN:
Category :
Languages : en
Pages : 1292
Book Description