Section 5.1.1 is part of the description of a flatjack, under the Apparatus Section of the Standard. The description states that a flatjack may be pressurized with hydraulic oil. Hydraulic oil is one of several hydraulic fluids can be used with hand pumps and flatjacks used in testing. However, other hydraulic fluids are also used in this application. In practice, the use of water or water-based hydraulic fluids with a stainless steel pump can be beneficial in flatjack testing since any spills or leaks of water are much less likely to stain or damage the masonry and surrounding materials than hydraulic oil. This ballot proposes to change the reference to hydraulic oil to the more general term hydraulic fluid in order to allow the use of water and other non-oil hydraulic fluids. Similarly a minor change is being proposed to section 8.6 to have it reference hydraulic fluid. This will make this section parallel to the language in ASTM C1196, In Situ Compressive Stress Within Solid Unit Masonry Estimated Using Flatjack Measurements. A similar ballot item is proposed for the corresponding language in Sections 5.1.1 and 8.8 of ASTM C1196.
Keywordsflatjack; in situ; masonry; nondestructive evaluation; Compression testing--masonry/mortar; Nondestructive evaluation (NDE)--concrete/masonry; Compressive modulus; Deformability; Flatjack method; In-situ inspection/analysis; Masonry units
Ballot Item Approved as C1197-2014 and Pending Publication