Masonry of Traditional Clay Bricks Guarantees Quality Measures
Masonry of traditional clay bricks guarantees quality measures
(1) It is not advisable to build a wall in the open air on rainy days, and cover the clay brick wall built on the rainy day. When the construction is continued, the verticality of the wall should be reviewed. If the verticality exceeds the allowable deviation, the masonry should be removed. Under normal construction conditions, the daily masonry height of clay brick masonry and small masonry should be controlled within 1.5m or one step scaffolding height, and the stone masonry should not exceed 1.2m.
(2) In order to ensure that the clay brick wall is vertical and level, it should be inspected at any time during the masonry process, and it should be “three skins, one hanging, five skins and one leaning”.
(3) When the height difference between adjacent parts of the house is large, the upper part should be built first. When the section is constructed, the height difference between adjacent construction sections of the masonry shall not exceed one floor and shall not exceed 4m.
(4) The holes of the clay perforated brick shall be masonry perpendicular to the pressure surface.
(5) During the construction of masonry, the floor and roof loading shall not exceed the allowable load value of the slab. Under the floor of the construction layer inlet, it is advisable to take temporary support measures.
(6) When the clay brick wall is built, the top brick of each load-bearing wall shall be brick-layed. Below the beam or beam mat, the stepped horizontal plane of the variable-section brick masonry and the pick-up layer of the masonry (provocation, waistline), etc., are also applied to the masonry to ensure the overall strength of the masonry.
(7) Reinforced concrete lintels shall be provided on the upper part of the opening with a width exceeding 300 mm. When the formwork at the bottom of the brick lintel and its support are removed, the strength of the ash joint mortar should not be less than 75% of the design strength.
(8) The grey joints of the arc arch and flat arch lintels shall be made into wedge-shaped joints. The width of the grey bottom of the arch shall not be less than 5 mm, the width of the gray joint of the arch shall not exceed 15 mm, and the longitudinal and transverse grey joints of the arch shall be filled. Solid mortar; the flat arched girders should be not less than 20mm below the wall, and the brick arch should have 1% arching at the bottom of the beam.
(9) The top surface of the masonry on which the prefabricated beams and slabs are to be placed should be leveled and should be placed while being installed. When the design has no specific requirements, a 1:2.5 cement mortar should be used. This is an important construction technical measure to ensure the uniform transmission of beams and plates and structural safety.
(10) Anti-corrosion measures shall be taken for steel bars placed in masonry ash joints in humid environments or environments with chemically aggressive media.
(11) The openings, pipes and trenches required by the design shall be correctly reserved or pre-buried during the masonry. Without the consent of the design, the wall shall not be cut and horizontal grooves shall be cut in the wall. Pipes should not be buried in load-bearing walls and independent columns with a length of less than 500 mm on the long side of the section.