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Concrete hollow brick construction techniques and quality control measures in effect


Keywords: concrete hollow brick construction process factors influencing the quality control measures 0 Introduction This paper by the Chinese Alliance WWW. LWLM.COM collected. With the recent development of the construction industry, the domestic construction techniques are applied in continuous progress, quality is improving. Hollow brick with concrete instead of clay bricks as wall materials, not only improve the efficient use of housing space,franklin marshall pas cher, more importantly, save energy, protect the environment. 1 of the construction process of concrete hollow brick construction preparation 1.1 : preparation of materials: ① brick: brick varieties, the intensity level must meet the design requirements and specifications should be consistent with evidence of conformity and test a single factory. ② Cement: masonry varieties and labeling should be based on location and in which environmental selection, the general should adopt the 325 ordinary portland cement or slag cement; should have factory certification, Zhunyongzheng and test reports before use; different varieties of cement shall not be mixed. ③ sand: should be adopted in the sand. Preparation of cement mortar or cement mortar strength level equal to or greater than M7.5, the sand clay content should not exceed 5%; intensity level is less than M5, the sand clay content should not exceed 10%. ④ Water: should be clean and free of harmful substances in water. ⑤ admixture: a lime cream: less than 7 days curing time, prohibited the use of dehydrated lime paste hardening. b Other admixtures: electric gypsum, fly ash and other ash should be determined by laboratory tests. ⑥ Other materials: Rachel steel, embedded parts, wood blocks, waterproof powder shall meet the design requirements. 1.2 operating processes: 1.2.1 mixing Mortar: Mortar mechanical mixing, loading trolleys, pounds, said measurement. Tic-Tac-material transport aircraft used mainly for vertical transportation, trolleys for the level of artificial transportation. 1.2.2 Group assemble method: ① brick masonry should be up and down the wrong seam, take the puzzle inside and outside, gray seam straight, full of mortar, horizontal seam thickness and ash gray vertical slit widths are 10mm, but not less than 8mm, should not be greater than 12mm. ② brick corner and junction should also be masonry, shall be the wrong lap joints, fill the wall at all connected to each other, the corner and with the concrete wall connections should be set high along the wall 2 ¢ 6 @ 600-length Rachel tendons. Of masonry can not temporary retention and must be piled at the ramp to break cha, and setting up a tie bar, tie bar number per 12cm thick and the original placed on a 6mm diameter steel, high along the wall spacing shall not more than 50cm, length from the wall to remain buried at the date cha, each side should not be less than 50cm, the end should be 90 ° hook. Note: the building of temporary seismic discontinuity region can not remain straight at cha. ③ wall and fill the wall with the top surface of the upper-structure at the stand with the side of the brick or brick ramp puzzle tight squeeze. 1.2.3 brick masonry: construction sequence: Flat-ray column bomb program, the wall reserved for link bars must be padded left doors and windows installed or in-situ masonry lintel at the top of the masonry. ① leave the bottom row of bricks (brick-like dry place): generally put down brick wall at the end of the first skin,christian louboutin boutique, the horizontal rows of small brick wall should be, should be ranked along the front and rear vertical wall of brick. Based on the pop-up window openings ink lines, the interval between the wall check doors and windows, with Qiang Zhu (stack) length of the row of brick mold conformity size, should the sub-module, will have to be considered a good cut brick and emissions. Cut bricks or small blocks should be ranked in the middle of the window, with Qiang Zhu (stack) side or the other obvious parts. ② Select tiles: selection edges and corners neatly, without bending crack, basically the same size bricks. ③ plate angle: Walls should be preceded by plate angle, angle of masonry brick wall per plate angle no more than five skin, and should be promptly suspended by, found deviations timely repair. Plate angle to carefully control the skin layer and a few shots of the brick elevation, control the size of the mortar joint, the horizontal mortar joint uniform. Angle of each plate should be checked after masonry, flat and vertical fully meet the requirements before they can be linked to end walls. ④ hung: thick and a brick masonry below, the use of single hung; half a brick thick masonry and above, must be double-hung. If the length of the masonry wall a few months while sharing a communication line, the middle branch should be set a few points; small straight line is to be taut, every brick to be threading the skin look flat, the horizontal joints uniform, straight and smooth. ⑤ brick: brick squeeze slurry method should be adopted, or to use thirty-one brick method. Thirty-one brick is a method of operating essentials ash shovel, a brick, a squeeze kneading, and readily to scrape out the mortar. When bricks to be flat, with the line, laying operation, in order to control the travel section and arbitrary small walking slit seam. Regular self-inspection, if there is bias, should be corrected at any time, prohibited the use of Brick corrected afterwards. Should assemble with the paste with the brick surface of the gray track overflow curettage. ⑥ embedded wooden blocks: wood blocks shall be treated with preservatives, head out when embedded, including bulk, height to determine the volume of the hole; hole height of 1.2m or less, put two on each side,mbt chaussures paris, by height 2 ~ 3m put four on each side. Embedded wood brick part of the general differences in the hole and down four blocks at the beginning, middle,sac hermes birkin, evenly distributed. Consider setting aside a window and door openings and install window and door frames, window and door openings should pay attention to the width and elevation design requirements.
     
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