ARCH 2044 Chapter Notes - Chapter 12: Reinforced Concrete, Sintering, Ultimate Tensile Strength
23 Oct 2016
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Produced by mixing together cementer, water, and fine and coarse and coarse aggregates (sand + gravel) 4. a. no tendency to bleed (water seeping from the wet concrete. The ai(cid:373) of the (cid:272)o(cid:374)(cid:272)rete (cid:373)ix (cid:272)o(cid:373)positio(cid:374) is to opti(cid:373)ize . Hydraulic binder - a substance which after mixing with water sets both in air and also underwater. Extraction and breaking-up of the raw material a. One ton of portland cement = 1. 5 tons of raw material. Broken down to fist size at the quarry. Mixing and crushing the raw material to form a dust a. b. c. Organized in terms of its grain size and composition. Various raw materials are mixed together to achieve the correct chemical composition. Rocks are crushed in ballmills + dried (at the same time) Raw material leaves the mill as a fine dust. Heating the raw materials until sintering takes place. After heating, the red-hot clinker leaves the kiln cooled quickly with air.
