zielsicher Englisch, Bautechnik, Schulbuch

Look at the pictures below. What can you see? steel rod mat steel bar clinker Go back to the text on page 112. Find four statements that describe the advantages of concrete. Concrete offers  good workability. It has  characteristics similar to stone. It can  be shaped and poured into forms. It shows  great flexibility. A concrete expert visits your company and answers questions concerning concrete. Listen to the conversation, then decide whether the statements are true or false. true false 1. It is always best to manufacture the concrete on site. 2. Checks ensure the strength, workability, setting time and many more things. 3. Gypsum is added to control the setting time. 4. Outside temperatures are not important during the setting period. 5. Types of concrete include regular concrete, high strength concrete, selfconsolidating concrete etc. The manufacturing process of cement: Put the steps into the right order. 2  Crushers reduce them to the size of ping pong balls. 4  The rawmeal goes into a preheater. 1  Big size limestone blocks are transported from the quarry to the cement factory. 3  The rocks become rawmeal in a grinding machine. 6  The clinker goes through a process of final grinding and at the same time admixtures are added. 5  It moves on to a cylindrical furnace and becomes clinker. You are working in the marketing department of a cement factory. You have to produce a chart for an information day. Find a slogan that promotes concrete technology and highlight the advantages of concrete. You may gain some inspiration by checking the websites of concrete manufacturers. Present the chart to your classmates. 07 A2 08 A2 09 A2–B1 listening jx645q Word bank laboratory Labor setting time Aushärtezeit layer Schicht frost Frost dry out austrocknen crack brechen, rissig werden regular concrete Normalbeton high strength concrete hochfester Beton self-compacting concrete selbst­ verdichtender Beton ✗ ✗ ✗ ✗ ✗ 10 A2 11 B1 individual answers 114 Unit 26 Interaction Nur zu Prüfzwecken – Eigentum des Verlags öbv