Do you know how the aerated concrete block infill walls crack generated?

Article source：

Aerated concrete block infill walls following just a few cracks: 
A horizontal fracture: the framework of the end of beam or plate end of the horizontal cracks. This crack reason: the high moisture content of the aerated concrete block, block contraction cracks; or sometimes the top-level aerated block and frame beams, mortar joint of the contact at the end of the board is not filled with mortar; or gray The seam thickness is too large, gray seam dry will crack. 
Vertical crack: aerated block filled walls vertical cracks generally vertical cracks along the side of frame columns or from the column side about 1m. The reasons for this crack: the contraction of the masonry block. When the temperature of 50 ± 1 ° C, relative humidity of 28% -32%, determination of the drying shrinkage deformation of the block value less than or equal to 0.8mm / m; when the temperature was 20 ± 2 ° C, relative humidity of 41% -45% measured under the conditions, the drying shrinkage deformation of the block value is less than or equal to 0.5mm / m, the greater than this number will produce shrinkage cracks. 
Inclined cracks: doors and windows at the top corner is easy to produce diagonal cracks.This cracks because of the low shear strength of aerated block over reinforced concrete slab partial short or over the slab to install both ends placed imbalance, not the real cause of bearing pressure is not enough cracks. 
    These are some simple analysis, want to know more knowledge of the aerated concrete block, Yu Feng Machinery Company. Henan Yu Feng Machinery is specialized in producing steam-cured sand lime brick equipment, aerated concrete block equipment, autoclaved fly ash brick equipment manufacturers, professional and technical personnel you free to explain. We will be based on the actual situation of the user for the user to develop the most feasible, the most reasonable and most economical production line.Our company can help users select the investment objectives, plant selection, design and build factories program, drawings. Guidance factories implementation of the program, guiding equipment, installation, commissioning, training of production operators, and help users to establish production and quality management system.