Author: Publisher:
ISBN:
Category : Diseases
Languages : en
Pages : 444
Book Description
Morbidity and Mortality Weekly Report
Author: Head and Neck Injuries in Sports
Author: Earl F. HoernerPublisher: ASTM International
ISBN: 0803118864
Category : Diseases
Languages : en
Pages : 364
Book Description
Public Playground Safety Handbook
Author: Publisher: DIANE Publishing
ISBN: 1437981828
Category : Playgrounds
Languages : en
Pages : 60
Book Description
Improving Engineered Wood Fiber Surfaces for Accessible Playgrounds
Author: Theodore LaufenbergPublisher:
ISBN:
Category : Binders (Materials)
Languages : en
Pages : 20
Book Description
Some engineered wood fiber surfaces are uneven, tend to shift, and have low density. The goal of our research was to develop a playground surface material that cushions impact and is accessible to people with disabilities. In the initial screening phase, we evaluated a variety of in situ surface treatments and mixtures of wood particles combined with various binders. Engineered wood fiber (EWF) was prepared from three species, red maple, ponderosa pine, and one-seed juniper, which have a wide range of densities and bonding properties. In the scale-up phase, we evaluated commercially available EWF and several promising binding systems from the screening phase trials. Seventeen test configurations were formed in plywood boxes, using different levels of EWF compaction, fiber moisture content, surface layer thickness, and types of binders. Binder systems that show promise for surface stabilization and satisfactory impact behavior are polyurethane, latex, and silicone. These binders were chosen on the basis of processing ease, flexibility (elongation to failure), cost, and safety in application and use. In this report, we identify the strengths and weaknesses of the surface treatments, review the viability of the systems and the testing concepts we have developed, and identify further research needs.
Resources in Education
Author: Federal Register
Author: Publisher:
ISBN:
Category : Delegated legislation
Languages : en
Pages : 2288
Book Description
Annual Book of ASTM Standards
Author: ASTM InternationalPublisher:
ISBN:
Category : Materials
Languages : en
Pages : 1580
Book Description
Annual Book of ASTM Standards
Author: American Society for Testing and MaterialsPublisher:
ISBN:
Category : Materials
Languages : en
Pages : 980
Book Description
Stabilized Engineered Wood Fiber for Accessible Playground Surfaces
Author: Theodore LaufenbergPublisher:
ISBN:
Category : Fibers
Languages : en
Pages : 16
Book Description
Author: