Boston Concrete Cutting
288 Grove Street, Unit 110
Braintree, MA 02184


781-519-2456
info@bostonconcretecutting.com
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Concrete Cutting Sawing Hanover MA Mass Massachusetts

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“We Specialize in Cutting Doorways and Windows in Concrete Foundations”

Are You in Hanover Massachusetts? Do You Need Concrete Cutting?

We Are Your Local Concrete Cutter

Call 781-519-2456

We Service Hanover MA and all surrounding Cities & Towns

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Plastering is not usually successful, although there are cases where a mixture of equal parts of cement and sand has apparently been successful; and when finished rough, it did not show any cracks. It is generally considered impossible to apply concrete mortar in thin layers to a concrete surface, and make it adhere for any length of time. When the plastering begins to scale off, it looks worse than the unfinished surface. This paragraph is intended more as a warning against this manner of finishing concrete surfaces than as a description of it as an approved method of finish. The following method has been adopted by the New York Central Railroad for giving a good finish to exposed concrete surfaces: The forms of 2-inch tongued-and-grooved pine were coated with soft soap, all openings in the joints of the forms being filled with hard soap. The concrete was then deposited, and, as it progressed, was drawn back from the face with a square-pointed shovel, and 1:2 concrete mortar poured in along the forms. When the forms were removed, and while the concrete was green, the surface was rubbed, with a circular motion, with pieces of white firebrick, or brick composed of one part cement and one part sand.

The concrete surface was then dampened and painted with a 1: 1 grout, rubbed in, and finished with a wooden float, leaving a smooth and hard surface when dry. The following method of placing concrete mortar facing has been found very satisfactory, and has been adopted very extensively in the last few years: A sheet-iron plate 6 or 8 inches wide and about 5 or 6 feet long, has riveted across it on one side angles of -1-inch size, or such other size as may be necessary to give the desired thickness of concrete mortar facing, these angles being spaced about two feet apart (Fig 116). In operation, the ribs of the angles are placed against the forms; and the space between the plate and forms is filled with concrete mortar, which is mixed in small batches, and thoroughly tamped. The concrete back-filling is then placed; the mould is withdrawn; and the facing and back- filling are crammed together. The concrete mortar facing is mixed in the proportion of one part cement, to 1, 2, or 3 parts sand; usually a 1: 2 mixture is employed, mixed wet and in small batches as used. As concrete mortar facing shows the roughness of the forms more readily than concrete does, care is required in constructing, to secure a smooth finish. When the forms are removed, the face may be treated either in the manner already described, or according to the following method taken from the "Proceedings" of the American Railway Engineering and Maintenance of Way Association: "After the forms are removed, any small cavities or openings in the concrete shall be filled with concrete mortar, if necessary. Any ridges due to cracks or joints in the lumber shall be rubbed down; the entire face shall be washed with a thin grout of the consistency of whitewash, mixed in the proportion of 1 part cement to 2 parts of sand.

The wash shall be applied with a brush." Concrete surfaces may be finished to represent ashlars concrete. The process is similar to stone-dressing; and any of the forms of finish employed for cut stone can be used for concrete. Very often, when the surface is finished to represent ashlars concrete, vertical and horizontal three- sided pieces of wood are fastened to the forms to make V-shaped depressions in the concrete, as shown.  A facing of stone or brick is frequently used for reinforced concrete, and is a very satisfactory solution of the problem of finish. The same care is required with a stone or brick facing as if the entire structure were stone or brick. The Ingalls Building at Cincinnati, Ohio, 16 stories, is veneered on the outside with marble to a height of three stories, and with brick and terra-cotta above the third story.
    

Are You in Hanover Massachusetts? Do You Need Concrete Cutting?

We Are Your Local Concrete Cutter

Call 781-519-2456

We Service Hanover MA and all surrounding Cities & Towns

Boston Concrete Cutting | 288 Grove Street, Unit 110, Braintree, MA 02184 | 781-519-2456 | info@bostonconcretecutting.com