Mortar. All mortar shall conform to ASTM C-476 and shall have a compressive strength of 1800 psi in 28 days.
Mortar. 47. Mortar for brickwork or masonry is to consist of 4 parts sand and 1 cement thoroughly mixed with clean water and used at once. Mortar (END OF PAGE 28) must be mixed in small lots so that it is used within half an hour of the time of mixing. Any mortar not used is to be destroyed and must not be worked up again or be blended with fresh mortar. If any stale mortar is used the resident engineer shall order all work completed in the structure to be removed whether or not it appears satisfactory, and any xxxxxxx, xxxxxxx or engineer who uses or allows the use of stale mortar shall, at the request of the resident engineer, be dismissed from the works. Lime mortar consisting of 2 parts sand and 1 part hydraulic lime of quality approved by the engineers may be used for culvert walls and abutments over 1 ft. 6 in. thickness, to such extent and in such situations only as may be approved by the resident engineer. Girder beds and copings must be in cement concrete or cement jointed masonry.
Mortar. The mortar used for jointing shall be as described under –Marble/ Granite Flooring specifications.
Mortar. Mortar shall conform to ASTM C 270, Type S, with an integral water repellent admixture as approved by the Engineer. The amount of admixture shall be as recommended by the admixture manufacturer. To ensure uniform color, texture, and quality, all mortar mix components shall be obtained from one manufacturer for each component, and from one source and producer for each aggregate. Geosynthetic Soil Reinforcement Geogrid reinforcement shall conform to Section 9-33.1, and shall be a product listed in Appendix D of the current WSDOT Qualified Products List (QPL). The values of Tal and Tult as listed in the QPL for the products used shall meet or exceed the values required for the wall manufacturer’s reinforcement design as specified in the structural earth wall design calculation and working drawing submittal. The minimum ultimate tensile strength of the geogrid shall be a minimum average roll value (the average test results for any sampled roll in a lot shall meet or exceed the values shown in Appendix D of the current WSDOT QPL). The strength shall be determined in accordance with ASTM D 6637, for multi-rib specimens. The ultraviolet (UV) radiation stability, in accordance with ASTM D 4355, shall be a minimum of 70 percent strength retained after 500 hours in the weatherometer. The longitudinal (i.e., in the direction of loading) and transverse (i.e., parallel to the wall or slope face) ribs that make up the geogrid shall be perpendicular to one another. The maximum deviation of the cross-rib from being perpendicular to the longitudinal rib (skew) shall be no more than 1 inch in 5 feet of geogrid width. The maximum deviation of the cross-rib at any point from a line perpendicular to the longitudinal ribs located at the cross-rib (bow) shall be 0.5 inches. The gap between the connector and the bearing surface of the connector tab cross-rib shall not exceed 0.5 inches. A maximum of 10 percent of connector tabs may have a gap between 0.3 inches and 0.5 inches. Gaps in the remaining connector tabs shall not exceed 0.3 inches. The Engineer will take random samples of the geogrid materials at the job site. Approval of the geogrid materials will be based on testing of samples from each lot. A “lot” shall be defined as all geogrid rolls sent to the project site produced by the same manufacturer during a continuous period of production at the same manufacturing plant having the same product name. The Contracting Agency will require 14 calendar days maximum for testing ...
Mortar. Unless otherwise specified, mortar for brick work shall be composed of 1 part of cement to 6 parts of approved coarse sand, for walls of one brick thick (25cm) and over, and 1 part of cement to 4 parts of approved sand for half brick thick and brick on edge walls. Other specification for mortar in brick work shall be as per I.S. 2250. Mixing should be done in a mechanical pan mixer. If hand mixing is allowed, 10% extra cement over and above the proportion as stated above and mortar shall be prepared on a clean and hard water proof platform and water shall be added only after dry mixing of cement and sand. Mixed mortar shall be used within 1/2 an hour of mixing and partly set mortar should be discarded.
Mortar. 4 The first sentence of the first paragraph is revised to read: 6 Fine aggregate for portland cement or blended hydraulic cement mortar shall consist of 7 sand or other inert materials, or combinations thereof, accepted by the Engineer, having 8 hard, strong, durable particles free from adherent coating. 9
Mortar. The mortar, which Is used, shall be mixed in proper proportion as specified in tender item. It shall be thoroughly mixed on an impervious platform by being turned over at least twice dry and twice wet; water in required quantity shall be added gradually. Mortar shall not be ground. Cement mortar shall be prepared in required quantity and not with more than one bag of cement at a time and this quantity shall be consumed within half of an hour after mixing.
Mortar. The mortar used shall be as specified. In case of dry brick flooring, fine sand shall be filled in joints.
Mortar. 1. One component, cement based, fiber reinforced, shrinkage compensated, gray in color, with a
Mortar. For pipe joints and all other parts of the work, one (1) part sulfate resisting Portland cement to two (2) parts clean sand, by volume.
