526.1 526.3(d)
526.1DESCRIPTION —This work is rubblizing and seating of existing concrete pavements before the
placement of a pavement overlay. Rubblizing is classified into two types as follows:
with at least 50% of the pieces per square yard having a maximum horizontal dimension of 4 inches.
526.2MATERIAL —
526.3CONSTRUCTION —
approval before the start of construction. If, during rubblizing operations results are not being obtained, cease all rubblizing operations and submit an alternate plan and list of equi pment capable of obtaining the specified results to the Representative. Resume rubblizing operations upon acceptance of the alternate plan.
concrete pavement, as specified in Section 490.3, before beginning rubblizing operations. Do not remove any existing full depth asphalt patches.
the specified dimensions, throughout the full depth of the pavement, on a regular and continuous basis. Provide equipment suitable to the Representative. For Type 2 rubblizing, ensure that pieces are free of bond with reinforcement to allow adequate seating. Excavate two, 3 -foot by 12 -foot, full -depth sections of rubblized pavement, within the first 1/2 mile of rubblizing operations, to ensure that the pavement is being rubblized to the specific dimensions. Excavate additional areas, as directed, to ensure that the specified dimensions are being maintained. Repeat the initial two -section, full -depth pavem ent removal testing procedure whenever the equipment, rubblizing pattern, or breaking force is changed. Use subbase, No. 2A to backfill all excavated areas. Place backfill in maximum 6 -inch lifts and compact by rolling until nonmovement is achieved. Do not allow any shoving or wave motion under the roller. Cut off and remove any reinforcement steel exposed at the surface of the rubblized pavement. If the transverse joints of the original pavement contained steel plates, remove any steel plates that are exposed. Exercise care during rubblizing operations to prevent shattering pavement edges adjacent to asphalt base repairs. Exercise extreme care during rubblizing operations to protect and prevent damage to underground utilities, drainage facilities, bridge approach slabs, and bridge decks. Repair any damage that occu