Concrete probe-strength study : final report.
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

For very narrow results

When looking for a specific result

Best used for discovery & interchangable words

Recommended to be used in conjunction with other fields

Dates

to

Document Data
Library
People
Clear All
Clear All

For additional assistance using the Custom Query please check out our Help Page

i

Concrete probe-strength study : final report.

Filetype[PDF-1.59 MB]


English

Details:

  • Alternative Title:
    Concrete probe-strength study.
  • Creators:
  • Corporate Creators:
  • Corporate Contributors:
  • Subject/TRT Terms:
  • Publication/ Report Number:
  • Resource Type:
  • Geographical Coverage:
  • Corporate Publisher:
  • Abstract:
    The Windsor probe - test system was evaluated for determining compressive strength of concrete by comparing probe strengths against cylinder and core strengths from both laboratory and field-poured concrete. Advantages and disadvantages of this system were of prime consideration while cost and efficiency were also taken into account. The probe test compresses a section of the concrete by forced entry of a hardened alloy probe driven into the concrete by a special gun. Laboratory prepared test slabs were poured along with standard concrete cylinders and beams. At various ages, slabs were tested using the probe and cylinders were tested for compressive strengths. Cores of the slabs were taken for strength comparisons. From this data two strength curves were derived. These same procedures were used for the field projects using the same type of aggregate (chert) but from different sources. These results were compared to laboratory curves and show field strengths for cylinders and cores to vary considerably from the laboratory curves. The Windsor probe - test system is fast, easy to use and less expensive than coring. It gives good results when using same material, aggregate source and mix design. Problems exist with use of probe in hard aggregate such as probes breaking, entering concrete crooked, and being loose and causing spalling. Operator technique does play a part in obtaining good results. Further study using this system should be made under varying conditions before it is accepted as a device to replace cylinders and cores for determining compressive strength of concrete.
  • Format:
  • Funding:
  • Collection(s):
  • Main Document Checksum:
  • Download URL:
  • File Type:

Supporting Files

  • No Additional Files
More +

You May Also Like

Checkout today's featured content at rosap.ntl.bts.gov