Only one pre-concreting conference is considered necessary for thoroughly discussing the work
responsibilities, and duties of all involved in the project. On small projects it may be possible
to include a pre-concreting conference with the preconstruction conference.
9.02 “PCC PLANT PAGE” (FORMS 800240E and 800240M)
The daily inspection report on paving work is a record of the
construction progress, working conditions, weather, etc. during paving and plant operations
which may affect pavement quality. This report keeps district and central offices advised on
job status and serves as a detailed permanent record of the paving project. At the end of each
day on which any pavement was placed, this report is to be completed by
plant inspection staff
for appropriate distribution. Copies of forms are included in
Appendix 9-5. Refer to Materials I.M. 527
for instructions on preparing and distributing this form.
9.03 USE OF COMMERCIAL READY MIX CONCRETE ON PAVING PROJECTS
When the concrete source for a paving project is a commercial ready mix plant, each truck load
of concrete must be identified by Form 830212 or an acceptable alternate plant ticket. A current
copy of the Form 830212 is included in
Appendix 9-1.
Required Information:
- For continuous mainline paving, Form 830212 shall be filled out completely for the first
truck. Tickets for subsequent trucks need only to have the Truck No., Ticket No., Conc. This
Truck, Time Batched, Water Subtotal, and Maximum Water Allowed portion filled out. When any
change in the moisture content, plant adjustments in mixing water, or any other changes to
the batching or materials in the concrete are made, a complete ticket must be filled out
for the first load that includes the changes.
- For intermittent production other than mainline paving, such as bridge approaches and street
returns, all information on Form 830212 is required for each load because of the greater possibility
of need for water adjustment on grade.
Moisture tests must be made frequently
at the plant, and water added on grade must be documented to insure uniformity
in concrete consistency and accurate tracing of water
to cementitious ratios. Discharge time must be entered on Form 830212 for each load
to properly document the amount of time from batching to placement.
9.04 CONCRETE DELIVERY TIMES
To insure that quality concrete is incorporated into pavement, maximum delivery
times have been included in Specification 2301.13D
for both continuous agitation (agitor and ready mix trucks) and non-agitated trucks (dump trucks).
These delivery times should be verified at least once during each day of normal paving. Per
Materials IM 527, cement to water contact time should be
recorded at least daily. These verifications should be recorded in project field books. During hot,
dry, windy weather, maximum time limitations listed in specifications are critical limits to insure
that quality concrete is being placed and incorporated into project.