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    Aerated block practical application problems and solutions
    2015-8-17 21:28:28

    Shandong Shengya Machinery Co., Ltd. specializing in the production of various types of brick, brick machine, brick machine, hollow brick, pavement brick and other equipment of the old brick factory.
           Several common aerated block wall cracks and prevention
    1.1 crack vertical and horizontal level
    Such cracks occur in aerated block building on the top floor at 500mm from the roof at about the width of 10mm, indoor greater than outdoors. Inga gas block wall and roof building different location, solar radiation heat suffered not the same. In the hot summer, aerated block equipment experts Henan strong source of the measured roof surface temperature is 25 ℃ higher than the wall, under the effect of different temperatures, thermal roof swell in the wall, the wall creates a horizontal thrust that wall cracks.
    Solve aerated block wall horizontal fracture problem was first reduce the level of thrust from the roof deformation caused by the thermal expansion of the start, Henan strong source of aerated block device experts recommend measures to be taken to enhance hypospadias roof insulation and insulation effect of: a increased roof insulation The thickness of the insulation thickness may be increased to 50% -70%, or used in thermal insulation properties of a good material to reduce the level of the roof thrust generated by the thermal expansion of the wall. b increase the number of ring beam transverse wall, strengthening the vertical and horizontal wall between Rachel. Thereby enhancing the ability to resist the vertical wall of horizontal thrust.
    1.2 transverse load-bearing walls vertical cracks
    The cracks in aerated block building top most severe, the lower it is much lighter. Cracks occurred in the middle of aerated block wall, width about 8mm, goes wider at the state, down from the top stop at 2m white walls. This law has its cracks its location, direction and width are basically the same, are not pulling through at the ring beam. To conserve supplies, part of the construction side cut corners in brick structure wall design customary setting does not pull through the ring beam, but this Ring Beam can not be used in aerated block beam ends with the Department, otherwise it will form a stress concentration, this aerated block wall at the weakest link, so prone to cracks.
    Large shrinkage characteristics, can be taken to the top of the building housing the above analysis and aerated block wall full set vertical and horizontal ring beam measures. (Other rooms by General Settings). The measures in the northern region of Henan strong source of a large number of aerated block device project implementation proved to prevent the top of the building housing the crack is very effective, but can also inhibit other cracks.
    1.3 gable inclined cracks
    Aerated block building gable top bighorn character cracks often appear symmetrical, widest 15mm, threaten security.
    Gable Arcturus is the top of the building is the biggest stress throughout the building and stress relief most points allowed site, but also bear the roof horizontal thrust, if not to take structural measures designed, easy to produce cracks.
    To take measures to prevent such cracks mainly from the construction, and within the top gable masonry increase bighorn lm 2-3 Road, length 5m, through a long bar diameter lOmm will gable bighorn Rachel up. The measures used in the project for many years, the situation is basically good, only after the re-engineering improvements to strengthen more effective.
    1.4 parapet crack
        Past the parapet just as decorations retaining walls and building facades roof drainage organized, do not get the attention it deserves. For some detailed structure not according to the design and construction specifications stringent requirements, even shoddy, shoddy work, so causing cracks. The reason for this crack: not assemble puzzle parapet flashings eaves, leaving the recess, do not bury wooden bricks; screed to the level of the parapet at the roots do not wipe arc angle, some twice wiped into, have access Cha ; do roofing layer root or parapet gutter, gutters, etc. not to roll additional layer. Screed often not smooth, not compacted, irregular square on the gauge line, not on the line, stay hidden, leading to uneven spread sheet, paste strong, tightness, easy tear and early damage, the occurrence of leakage water. Parapet root happens to be the lowest point of the roof; infiltration from the roof and parapet or parapet poured water are concentrated in the roots and gradually penetrate into the roots of the masonry parapet, where the winter after frost cause parapet cold. Cracks. Doors on both sides fell into the more obvious and prominent, the cracking is more severe.
    Preventive measures:
    a strict accordance with the design and construction standards in the main structure and configuration. Daughter out into the top of the wall construction technique, structural reinforcement column and press the top reinforcement should be connected together, structural column pull studs and masonry parapet should be firmly pull to form a whole, to improve the anti-crack parapet.
    Flashing eaves b daughter wall, grooves, wooden bricks embedded reserve; daughter Bacon and wiping leveling layer arc level and - once complete. Screed must be smooth, compacted, regulatory side, on-line.
    c waterproof layer to check before grass quality is satisfactory and whether the grassroots has been dried. Grassroots if quality problems, immediately addressed. Quality defects or dried grass leading to membrane paste strong, not real or play drums, blistering, cracking major problem.
    Shandong Shengya Machinery Co., Ltd. has been committed cement products machinery development, production and sale of advanced equipment, superb technical expertise and two decades of experience, the company has always been at the forefront of research and development center block molding machine market development Follow the advanced technology at home and abroad, to develop products for different investment needs of users, mainly block making machine, hydraulic tile machine, cement pipe machine, mixer, hanging roller machine, telephone poles machine equipment. At present the country with 19 offices and six overseas plants (Nigeria, Tanzania, Algeria, Kenya, Mozambique, Ethiopia) and exported more than 100 countries and regions.


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