High Performance Concrete Specifications and Practices for Bridges (2013) / Chapter Skim
Currently Skimming:
Pages 30-34
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 30... ...
30 chapter five CASE EXAMPLES OF HIGH PERFORMANCE CONCRETE APPLICATIONS IN BRIDGES strengths were about 4.0 ksi. The establishment of a good working relationship among owners, inspectors, contractors, and concrete suppliers was of prime importance for the successful construction of an LC-HPC bridge deck.
|
From page 31... ...
31 and bridge deck. The CIP concrete was required to have a minimum compressive strength of 4.2 ksi at 28 days, a maximum permeability per AASHTO T 277 of 2000 coulombs, a minimum cement content of 658 lb/yd3, and a maximum w/cm of 0.40.
|
From page 32... ...
32 quantify the enhanced performance of Class HP concrete in those projects indicated that: • 49% had no cracks. • 48% had transverse cracks.
|
From page 33... ...
33 Once approved, the mix may be used on multiple projects without further testing for each project. VIRGINIA DEPARTMENT OF TRANSPORTATION Standards for HPC use in Virginia have evolved through extensive laboratory research and field testing (Napier 2005)
|
From page 34... ...
34 of 660 lb/yd3, with a fly ash content between 10% and 20% or a slag cement content between 10% and 30%. If both fly ash and slag cement are included, the maximum allowable content is increased to 40%.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.