Uses
  Fire rated steel deck assemblies
  Concrete frame                      
  Bridge decks and girders
  Precast / prestressed elements
  Marine structures    
  Specified density concrete
                                                              

 


              

        Structural Lightweight Concrete



   
Structural lightweight concrete made with rotary kiln produced structural lightweight aggregate solves weight and durability problems in buildings and exposed structures.  Structural lightweight concrete has strengths comparable to normal weight concrete, yet is typically 25% to 35% lighter.  Structural lightweight concrete offers design flexibility and substantial cost savings by providing less dead load, improved seismic structural response, longer spans, better fire ratings, thinner sections, decreased story height, smaller size structural members, less reinforcing steel, and lower foundations costs.  Structural lightweight concrete precast elements have reduced trucking and placement costs.  The excellent durability performance of structural lightweight concrete made with expanded shale,
                  Schematic of LWA Particle                             clay or slate  structural lightweight aggregate is a
                                                                                          result of the ceramic nature of the aggregate, and
                 
       its exceptional bond to and elastic compatibility with the cementations matrix.

       Structural lightweight aggregate's cellular structure provides internal curing through water
       entrainment which is especially beneficial for high-performance concrete, (HPC) Internal curing
       improves the contact zone which mitigates micro cracking.

       Concrete using ESCS lightweight aggregate has better thermal properties, better fire ratings,
       reduced autogenous shrinkage, excellent freezing and thawing durability, improved contact zone
       between aggregate and cement matrix, less micro-cracking as a result of better elastic
       compatibility, more blast resistant, and has better shock and sound absorption, High-Performance
       lightweight aggregate concrete also has less cracking, improved skid resistance and is readily
       placed by the concrete pumping method.

        Structural Lightweight Concrete Literature

        Guide Specification for Structural Lightweight Concrete  ( #4001, Oct 2001)

        Finishing Lightweight Floors (#4640.0, Dec 2003)

         Pumping Structural Lightweight Concrete  "The Team Approach"  (Nov 1996)


          
  Uses of Structural Lightweight Concrete
   • Floors in steel frame buildings, (lightweight concrete on
      fire-rated steel deck assemblies)
   • Concrete frame buildings & parking structures (all types,
      including post-tensioned floor systems)
   • Bridge decks, piers & AASHTO girders
   • Specified density concrete
   •  Lightweight concrete precast & prestressed elements
      (beams, double-tees, tilt-up walls, raised access floor
       panel planks, hog slats, utility vaults, pipes, ornamentals,
       etc.)
   • Marine structures, floating docks, ships, & offshore oil
      platforms 
                                                                          • Fill concrete and insulating concrete
              Contact Zone Between
            LWA and Cement Matrix 


        

       Expanded Shale, Clay and Slate Institute, ESCSI
       2225 Murray Holladay Road • Suite 102 • Salt Lake City, UT 84117
       801.272.7070 • Fax 801.272.3377 •  email: info@escsi.org