Author: George C. HoffPublisher:
ISBN:
Category : Bombs
Languages : en
Pages : 168
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
Rapid Repair of Bomb-damaged Runways
Author: W. G. SetserPublisher:
ISBN:
Category : Military bases
Languages : en
Pages :
Book Description
Rapid Repair of Bomb-damaged Runways
Author: Rapid Repair of Bomb Damaged Runways by Unique Chemical Means
Author: John A. PeasleyPublisher:
ISBN:
Category :
Languages : en
Pages : 296
Book Description
A study was made of chemical quick setting materials to evaluate the performance of the promising compositions for repair of a bomb damaged runway. A single wheel rolling test trailer was fabricated to test surfacing material and sub-base construction. A three (3) inch layer of wire reinforced polyester bonded rock was tested sucessfully on a 10 x 10 foot site at Eglin Air Force Base with a 28,000 pound load supported by an aircraft wheel 31 x 11:50, 272 psi tire. Special equipment to make full scale applications in the minimum time will be required. Polyester resins appear to show the most promise because of the greater latitude in curing condition. (Author).
Rapid 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).
A Concept for Rapid Repair of Bomb-Damaged Runways Using Regulated-Set Cement
Author: George C. HoffPublisher:
ISBN:
Category : Bombs
Languages : en
Pages : 164
Book Description
A concept of a system using regulated-set cement for the rapid repair of bomb-damaged runways is presented. Bomb craters formed by the explosion of 750-lb. bombs beneath the pavement are repaired by concurrently filling the lower regions of the crater with the ejecta from the crater and a regulated-set cement cellular concrete. As filler nears the top of the crater, the ejecta is omitted and a stronger cellular concrete is placed as the subbase material. A regulated-set cement mortar is placed as the wearing surface. This repair can be applied to make runways operational 4 hours from the start of the repair. The concept was evaluated by repairing a number of smaller craters using the equipment and procedures developed for the repair concept. The equipment consists of portable, continuous batching and pumping equipment. The evaluations indicated taht the equipment possessed sufficient flexibility to repair everything from potholes to full-size craters. All regulated-set cement repairs are permanent and do not have to be upgraded or removed and replaced. Implementation of the regulated-set cement repair concept reduces manpower requirements approximately 25% from present repair procedures. The level of manpower skills required is similar to those presently used.
Bomb Crater Repair Techniques for Permanent Airfields
Author: David L. CookseyPublisher:
ISBN:
Category : Air bases
Languages : en
Pages : 134
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 Test of Rapid Repair Techniques for Bomb-damaged Runways
Author: Gene E. CarrollStructural 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).