Placing and Finishing

Placing
Concrete  delivery should be closely coordinated with placing and finishing  operations. Concrete should not be poured faster than it can be worked -  spreading, consolidating, bull floating. Instead, concrete should be  poured continuously as near as possible to its final position. You  should never dump concrete into separate piles and work together.

Consolidation
Placing  concrete in forms and then consolidating is popular for some types of  construction. The consolidation process uses vibration and gravity to  compact fresh concrete within the forms and around embedded items and  reinforcement. This process eliminates unwanted pockets of trapped air,  honeycomb, and stone while maintaining significant amounts of entrained  air. The vibration temporarily suspends the natural friction between the  aggregate particles, causing the concrete to behave as a liquid.  Internal friction resumes as the vibration is stopped.

Finishing
Visible  concrete - slabs used for driveways, patios, etc. - will often need  finishing. You can finish your concrete in many ways, including color  tinting and texturing. Patterned-stamped finishes are very popular on  projects of all sizes. Some surfaces may require just strike off and  screeding to proper contour and elevation. Others may be better off with  a broomed, troweled or floated finish. Strike off and screeding is the  process of cutting off excess concrete to bring the top surface of the  slab to proper grade. A straight edge is moved across the concrete with a  sawing motion and progresses forward a short distance with each  movement. Bull floating  eliminates high and low spots and embeds large aggregate particles  immediately after strike off. This looks like a long-handled straight  edge pulled across the concrete. Jointing is required to eliminate  unsightly random cracks. Contraction joints are made with a hand groover  or by inserting strips of plastic, wood, metal, or preformed joint  material into the unhardened concrete. Saw cut joints can be made after  the concrete is sufficiently hard or strong enough to prevent raveling.  After the concrete has been jointed, it should be floated with a wood or  metal hand float or with a finishing machine using float blades. This  embeds aggregate particles just beneath the surface; removes slight  imperfections, humps, and voids; and compacts the mortar at the surface  in preparation for additional finishing operations. Where a smooth,  hard, dense surface is desired, floating should be followed by steel  troweling. Troweling should not be done on a surface that has not been  floated; troweling after only bull floating is not an adequate finish  procedure. A slip-resistant surface can be produced by brooming before  the concrete has thoroughly hardened, but it should be sufficiently hard  to retain the scoring impression.

  

We deliver concrete to Pierce, South King, Lewis and Thurston Counties. Upon request we can go anywhere and are capable of pouring in remote wilderness areas, on barges in our waterways, whatever you need is, we will try our best to accommodate you.