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40-27 BUILDING <br />CAST -IN -PLACE CONCRETE I <br />BRPH ARCHITECTS -ENGINEERS, INC. <br />3.14 LIQUID FLOOR TREATMENT APPLICATION <br />A. Penetrating Liquid Floor Treatment: Prepare, apply, and finish penetrating liquid floor I <br />treatment according to manufacturer's written instructions. <br />3.15 JOINT FILLING I <br />A. Prepare, clean, and install joint filler according to manufacturer's written instructions. <br />1. Defer joint filling until concrete has aged at least two month(s). I <br />B. Remove dirt, debris, saw cuttings, curing compounds, and sealers from joints; leave I <br />contact faces of joints clean and dry. <br />C. Install semirigid joint filler full depth in saw -cut joints and at least 2 inches deep in ' <br />formed joints. Overfill joint and trim joint filler flush with top of joint after hardening. <br />3.16 CONCRETE SURFACE REPAIRS ' <br />A. Defective Concrete: Repair and patch defective areas when approved by Architect. <br />Remove and replace concrete that cannot be repaired and patched to Architect's ' <br />approval. <br />B. Patching Mortar: Mix dry -pack patching mortar, consisting of 1 part portland cement to <br />2-1/2 parts fine aggregate passing a No. 16 sieve, using only enough water for <br />' <br />handling and placing. <br />C. Repairing Formed Surfaces: Surface defects include color and texture irregularities, <br />' <br />cracks, spalls, air bubbles, honeycombs, rock pockets, fins and other projections on <br />the surface, and stains and other discolorations that cannot be removed by cleaning. <br />, <br />1. Immediately after form removal, cut out honeycombs, rock pockets, and voids <br />more than 1/2 inch in any dimension to solid concrete. Limit cut depth to 3/4 inch. <br />Make edges of cuts perpendicular to concrete surface. Clean, dampen with <br />water, and brush -coat holes and voids with bonding agent. Fill and compact with <br />patching mortar before bonding agent has dried. Fill form -tie voids with patching <br />mortar or cone plugs secured in place with bonding agent. <br />' <br />2. Repair defects on surfaces exposed to view by blending white portland cement <br />and standard portland cement so that, when dry, patching mortar matches <br />surrounding color. Patch a test area at inconspicuous locations to verify mixture <br />and color match before proceeding with patching. Compact mortar in place and <br />' <br />strike off slightly higher than surrounding surface. <br />3. Repair defects on concealed formed surfaces that affect concrete's durability and <br />structural performance as determined by Engineer. <br />' <br />D. Repairing Unformed Surfaces: Test unformed surfaces, such as floors and slabs, for ' <br />finish and verify surface tolerances specified for each surface. Correct low and high <br />areas. Test surfaces sloped to drain for trueness of slope and smoothness; use a <br />sloped template. <br />C06922.001.00 03 30 00 - 16 <br />05-22-14 <br />