Accession Number : AD0766694

Title :   Investigation of Methods of Preparing Horizontal Construction Joints in Concrete. Report 4. Evaluation of High-Pressure Water Jet and Joint Preparation Procedures.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s) : Tynes,William O. ; McCleese,William F.

Report Date : AUG 1973

Pagination or Media Count : 49

Abstract : The report discusses procedures for preparation of horizontal construction joints using a high-pressure water jet, to compare these procedures with the alternative practice of wet sand-blasting, and to develop additional information on procedures and methods that have been used in horizontal construction joint practice. The investigation is divided into two phases, laboratory and field. One 6-in. maximum size crushed limestone aggregate concrete mixture, with a cement content of 235 lb/cu yd, an air content of 6 plus or minus percent, and a slump of 2 plus or minus 1/2 in. on the portion of the mixture passing the 1-1/2-in. sieve, was used to cast specimens for both phases. (Modified author abstract)

Descriptors :   (*JOINTS, PREPARATION), (*CONSTRUCTION MATERIALS, *CONCRETE), LIQUID JETS, ABRASIVE BLASTING, MATERIALS, REMOVAL, CLEANING, CUTTING, TEST METHODS

Subject Categories : Construction Equipment, Materials & Supplies
      Couplers, Fasteners, and Joints

Distribution Statement : APPROVED FOR PUBLIC RELEASE