Process for casting concrete wall blocks for use with geogrid

摘要

In casting concrete retaining wall blocks, a plurality of mold inserts form a passage between top and bottom surfaces of the block, a recess in the block top between the passage and the back of the block and a recess in the bottom of the block between the passage and the back of the block. The recesses and the passage are formed by a plurality of mold inserts. When the blocks are used in a retaining wall, geogrid fabric passes from the rear of the wall through one of the recesses in a block, through the passage in the block and through the other recess in the block into backfill for stabilizing the wall. The recesses and passage are designed so that any concrete flashing formed between abutting mold inserts is not contacted by the geogrid fabric.

主权项

1. A method for casting a concrete retaining wall block for use with a geogrid fabric, said retaining wall block having a passage for the geogrid fabric extending between a top of the block and a bottom of the block, a top recess for passing the geogrid fabric between a back of the block and the passage and a bottom recess for passing the geogrid fabric between the passage and the back of the block, said method comprising the steps of:
a) providing a form in which the block is cast; b) positioning in said form a plurality of shaped mold inserts for forming said recesses and said passage, at least two of said mold inserts for forming the passage abutting while a block is cast, wherein flashing may be formed on a rear side of the passage between such abutting mold inserts, and wherein said mold inserts are shaped to form a raised portion in said passage whereby any flashing formed on the rear side of the passage is spaced away from the geogrid fabric when a cast block installed in a retaining wall is secured with the geogrid fabric extending through the top recess, the passage over the raised portion and the bottom recess; c) casting a block in the form; and d) separating the cast block from the form and the mold inserts.