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Sand and air-entrained blocks
Everyone in the construction industry knows about it, and how many of them know about it? Here Jinan Longcheng Shengshi concrete air-entrained block manufacturer will introduce to you the operating technology of sand and air-entrained blocks
Before laying the sand and air blocks, level them according to the elevation of the floor structure surface, then draw the axis of the first block according to the drawing, find and mark the position line of the door opening and window left by the masonry block. Rinse the floating sand and aerated blocks in advance and moisten the blocks with water. Set up leather poles at the corners of the masonry according to the elevation requirements of the masonry blocks. The longitudinal length of the leather poles should not be greater than one meter.
Prepare mortar according to the requirements of the design drawing. The proportion of mortar shall be prepared according to the strength and specifications of the sand aerated block. The weight ratio shall be used. The measurement accuracy shall be cement, sand and lime paste. Mechanical mixing shall be used. , the mixing time should be no less than the sand aeration blocks. The arrangement of the sand aeration blocks should be constructed according to the design drawings. Sand aeration blocks of different specifications and strengths cannot be used on the same wall. Arrange the blocks in the order shown on the design drawing. The sand aerated blocks should be arranged in a sequence from bottom to top. The main size of the masonry blocks should account for more than the total amount. The upper and lower skins of the blocks should be arranged in staggered joints, and the length of the blocks should generally be 1/2 of the length of the blocks, but should not be less than that.
At the corners of exterior walls and at the junctions of vertical and horizontal walls, the blocks should be divided and rolled, and built in a staggered manner. When the masonry is not in one piece until it reaches the door and window openings, it should be processed and cut from the same type of blocks. No other building blocks or bricks shall be used. When building sand and aerated blocks on exterior walls or corners, the blocks should be laid staggered, and the blocks should be nipped and rubbed. When they are built to the door and window openings, they should be cut with special tools. If there are any deficiencies, they must be made from the same batch. Models and specifications of sand aerated blocks are connected. The thickness of the horizontal mortar joints of masonry is generally . If the thickness of the horizontal mortar joints of masonry with mesh reinforcement is ~ and the thickness of the vertical mortar joints is , the vertical mortar joints that are larger than the thickness should be filled with grade fine stone concrete. Pay more attention to aerated blocks and sand aerated blocks