Mortar materials shall comply with TMS 602/ACI 530.1/ASCE 6 Section 2.1. Grout materials shall comply with TMS 602/ACI 530.1/ASCE 6 Section 2.2.
Vertical alignment of vertical cells to be grouted shall be sufficient vertical alignment sufficient to maintain clear, unobstructed, continuous, vertical cores measuring not less than 21/2 inches by 3 inches (51 mm by 76 mm) for fine aggregate grout and 3 inches by 3 inches (51 mm by 51 mm) for coarse aggregate grout as defined by ASTM C 476. The architect or engineer may specify other grout space sizes which shall be permitted provided they comply with TMS 402/ACI 530/ASCE 5 Section 1.20 and TMS 602/ACI 530.1/ASCE 6 Section 3.5C.
Placing of mortar and masonry units shall comply with TMS 602/ACI 530.1/ASCE 6 Section 3.3.
Grout placement shall be in accordance with TMS 402/ACI 530/ASCE 5 and TMS 602/ACI 530.1/ASCE 6.
Confine grout to the areas indicated on the project drawings. Use material to confine grout that permits bond between masonry units and mortar.
Unless otherwise required, mix grout other than self-consolidating grout to a consistency that has a slump between 8 and 11 inches (203 and 279 mm). Self-consolidating grout shall comply with TMS 602/ACI 530.1/ASCE 6.
Grout shall be placed before any initial set has occurred, but in no case more than 11/2 hours after the mix-designed water has been added.
Grout placement shall comply with Section 3.5 of TMS 602/ACI 530.1/ASCE 6. Grouting shall be a continuous operation with grout pour height in accordance with Section 3.5C of TMS 602/ACI 530.1/ASCE 6 and with grout lift height in accordance with Section 3.5D of TMS 602/ACI 530.1/ASCE 6.
Grouting shall be consolidated between lifts by puddling, rodding or mechanical vibration.
Grout keys shall be formed between grout pours. Grout keys shall be formed between grout lifts when the first lift is permitted to set prior to placement of the subsequent lift.