Division 500 — Division 500
Division 500 — Rigid Pavement
SECTION 501 - CONCRETE PAVEMENT
501.01 Description . This work consists of pavement composed of concrete, with or
without reinforcement as specified, constructed in accordance with these specifications and in reasonably close conformity with the lines, grades, thicknesses, and cross sections shown on the plans or established by the Engineer. This work also consists of replacing or repairing damaged or deteriorated dow els and wooden joint filler boards.
501.02 Materials . Materials shall meet the applicab le requirements of Division 700 and
the following Subsections: Fine Aggregate ............................................................................... 703.01 and 703.02 Coarse Aggregate ........................................................................... 703.01 and 703.03 Cement ........................................................................................... 701.01 and 701.02 Water ................................................................................................................ 714.0 1 Air Entraining Admixtures & Additives .......................................................... 713.02 Calcium Chlori de ............................................................................................. 714.02 Joint Filler ........................................................................................................ 707.02 Curing Materi als ............................................................................................... 713.01 Reinforcing Steel and Dowel Bars ................................................................... 711.02 Dowel Adhesive ............................................................................................... 714.11
501.02.1 Composit ion of Concrete.
501.02.1 1--General. The concrete mix design shall be submitted by the Contractor to the
Engineer for approval prior to production. The mix proportions shall be based on a laboratory batch as described below.
a.The combination of materials shall be those intended for use in the proposed work. Materials shall be from approved source s. Aggregate gradations, specific gravities and bulk densities shall be reported.
b.Trial mixtures having proportions and consistencies suitable for the proposed work shall be made using the ACI 211.1 as a guide to proportion the mix design.
c.Trial mixtures shall be designed to produce a slump within 3/4 in. of the maximum permitted, and for air-entrained concrete, 6.0 0.5 percent total air content. The temperature of freshly mixed concrete in trial mixtures shall be reported.
d.For each proposed mixture, at least three compressive test cylinders shall be made and cured in accordance with AASHTO T 126. Each change of water-cement ratio shall be considered a new mixture. The cylinders shall be tested for strength in accordance with AASHTO T 22 and sha ll meet the required 28 day strength.
e.The strength of laboratory tria l mixes shall exceed 4700 psi.
f.The laboratory trial batch mixtures shall have been made within the last three months before being submitted for approval.
501.02.1 2--Design of Mix . The mix shall be designed to meet the requirements as set out
in the following table.
Source: Mississippi Standard Specifications for Road and Bridge Construction, 2017 Edition. Pages 353–352 of 1,113.