空中混凝土垫层施工工艺(国外英文资料).docVIP

地面混凝土垫层施工工艺(国外英文资料) Floor concrete bedding construction technology This process is applicable to the construction of concrete pad layer on the ground of industrial and civil construction. Materials and main tools: Cement: the cement, Portland cement, Portland cement and Portland cement. 2.1.2 sand: medium sand or coarse sand, not more than 5%. Pebbles or gravel. The size of the particle size is 0.5 ~ 3.2 mm and the amount of mud is not greater than 2%. 2.1.4 concrete mixer, the scale, carts, or skip, sharp spade, shovel, chute barrel or plate vibrator, string, scraping bars, wood trowel, rubber hoses, iron chisel, steel wire brush. 2.2 operating conditions: The quality of the main structure of the main structure has been completed, the door frame is finished, and the level of 50cm has been bounced around the wall. 2.2.2 through the heating of the floor and the pipeline has been installed, the pipe holes have been made of fine concrete and have been filled in. The horizontal electric tube laid in the cushion layer is finished, and the procedure is completed. 2.2.4 before the first concrete cushion on the ground, through the indoor heating ditch and gully inside heating pipe has finished, finished the completed acceptance procedures and drainage pipe, indoor backfill soil component quality inspection evaluation. 3.1 process flow: The base processing, the high level, the horizontal control line, the concrete stirring, the concrete and the vibrating leveling 3.1.1 basic level processing: the binding on the concrete base laitance, loose concrete, mortar, etc with a chisel shave, use wire brush to brush off the slurry skin, and then use the broom. 3.1.2 to find the level control line: according to the level of the + 50cm level on the wall, the height of the padded layer is measured, and the condition can be played on the surrounding wall when conditions are available. 3.1.3 concrete stirring 3.1.3.1 according to the mixture ratio (its strength grade is lower than C10 str