Preparation and Placing of Concrete: A Comprehensive Guide, Slides of Applied Mechanics

Download Preparation and Placing of Concrete: A Comprehensive Guide and more Slides Applied Mechanics in PDF only on Docsity! Concrete Projects Docsity.com Form preparation • A. Oil the form faces that come in contact with the concrete. • B. Thoroughly soak the sub-base and forms with water before the concrete is placed. • C. The reinforcing steel should be cut to the correct size (length) and placed prior to the arrival of the ready-mix truck, or after mixing in portable mixer. Docsity.com Placing concrete • G. Do not dump the concrete in separate piles and then level it by working the piles together. • H. Do not use a soupy mix and hope to float the concrete into its final position. Segregation occurs because the mortar tends to flow ahead of the coarser aggregate. • I. A good rule of thumb is, Agood concrete is placed, not poured.@ • J. After concrete is placed use a straight edge to level and compact the surface. • K Concrete should be placed 30 to 45 minutes from the time water has been added to the mix. Docsity.com Tools need to place concrete • A. Shovel • B. Spade • C. Rake • D. Straight edge Docsity.com BULL FLOAT STRAIGHT EDGE WIRE MESH Docsity.com