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Bricklaying mortar

As an example, BS 1200 [8.14] specifies wide ranges for Type S (special) and Type G (general) (Table 8.3). It should be noted that these ranges were designed to encompass most of the sands which have proved, in practice, to be satisfactory. An ideal grading for bricklaying mortars [8.15] is also given. [Pg.73]

Masonry cements These are used for preparing bricklaying mortars and stuccos, and must not be used in concrete. They are usually complex proprietary formulations containing Portland clinker and a number of other ingredients that may include limestone, hydrated lime, air entrainers, retarders, water proofers and colouring agents. [Pg.199]

Bricklaying mortar is made by mixing slaked lime, Ca(OH)2, with sand and water. The mortar hardens as the mixture dries and calcium hydroxide crystallizes. Over time, however, the mortar sets to a harder solid as calcium hydroxide reacts with carbon dioxide in the air to form calcium carbonate crystals that intertwine with the sand particles. ... [Pg.915]

Environment and health-related problems Water-soluble chrome(VI) compounds in the wet cement or mortar have a highly sensitising effect and are up to 90% the cause of allergic cement dermatitis (cement eczema, bricklayer s itch ). The high alkalinity (pH = 13) of cement aids the development of this contact eczema. Bricklayer s itch is one of the most frequent professional diseases in the construction industry. [Pg.90]

The mortar may be applied to properly prepared concrete or steel substrates by usual acid-resistant bricklaying methods. An epoxy, urethane asphalt, bi-tumastic, polyester or vinyl ester membrane is required behind the block to ensure corrosion protection of the substrate. Because the mortar joints are rigid, a system of expansion/contraction joints, usually filled with ceramic paper, must be designed to prevent cracks. [Pg.195]

Mix the furan resin mortar in a soft mix, using 10 to 15% more resin than in the bricklaying mix (but first check with the manufacturer to obtain his agreement) and with your hands, work it into one of the strips of glass cloth until the cloth is completely saturated, and the entire cloth is black. [Pg.297]

BS 1200 Specifications for building sands from natural sources — sands for mortars for bricklaying , 1984. [Pg.80]

Bricklayer s Method. Acid-resistant brick linings are used where immersion in highly corrosive chemicals is involved or where severe thermal shock conditions exist. Furan resins have been used for years for such applications. As with the furan grouts previously discussed, a number of companies manufacture and market furan mortar systems for acid-resistant brick linings. Most, if not all, of these companies also install the complete lining system. [Pg.20]

Cement workers are in contact with wet cement products in the form of mortar or concrete (see Chap. 71). These workers belong to the group of building workers, consisting of bricklayers, bricklayers assistants and concrete workers, who may develop cement eczema (see Chap. 71). [Pg.875]

Bricklaying. The process of building a wall or other structure by bonding together individual bricks with mortar or other methods. BS 5628 Pt3 includes recommendations for bricklaying. Brickwork. See masonry ... [Pg.39]

Keybrick System. A system of bricklaying in which plastic pins hold the bricks in place, while mortar is poured around them. The bricks are made to close dimensional tolerances by repressing extruded blanks. [Pg.176]

Calcium hydroxide Ca(OH)2, called slaked lime, is formed by the action of water on calcined limestone. A mixture of slaked lime, sand and water has been used since ancient times as a mortar to bind stone to stone in bricklaying and as an internal and external plaster for walls. Carbon dioxide from the air reacts with the calcium hydroxide, forming calcium carbonate. Finally the mortar becomes a hard mixture of this carbonate and silicate from the sand. Although the composition of lime and the mechanism of its hardening were unknown in ancient times, considerable practical knowledge was developed and documented. [Pg.324]

Bricklayers using trowels to retrieve mortar from a cavity have ripped membranes... [Pg.171]

Usually, the lining (repair) of a reduction cell is performed in a specialized repair shop rarely, it is made right in the reduction shop. Typically, a thin layer leveling the granulated fireclay grit is placed in the new steel cradle or in the cradle after repair, and then the heat insulation slabs are lined. On the layers of heat insulation the refractory barrier layer is lined (bricks or dry barrier mixtures), the side line is made near the edges, and the cathode bottom blocks are installed. There are no mortars between the insulation layers. Bricklayers try to avoid using mortars because excessive water requires evaporation, which is not an easy process. Sometimes mortars are used to Une the upper layer of bricks (if the refractory layer is made from bricks). The carbon ore SiC side-wall blocks are installed on the side line after the cathode bottom blocks have been installed. [Pg.80]

Figure 1.32. Lime mortar for bricklaying consists of calcium hydroxide Ca(OH)2, sand and water. The mortar hardens by uptake of the carbon dioxide CO2 of the air, since sparingly soluble calcium carbonate CaCOs is formed after the binder reaction (a). Normally, lime mortar is strengthened by addition of small quantities of Portland cement. Figure 1.32. Lime mortar for bricklaying consists of calcium hydroxide Ca(OH)2, sand and water. The mortar hardens by uptake of the carbon dioxide CO2 of the air, since sparingly soluble calcium carbonate CaCOs is formed after the binder reaction (a). Normally, lime mortar is strengthened by addition of small quantities of Portland cement.
A mixture of slaked lime, sand, and water composes the mortar used in bricklaying. Excess water in the mortar is absorbed by the bricks and then lost by evaporation. In the final setting of the mortar, C02(g) from the air reacts with Ca(OH)2(s) and converts it to CaC03(s), as shown below ... [Pg.998]


See other pages where Bricklaying mortar is mentioned: [Pg.74]    [Pg.127]    [Pg.74]    [Pg.127]    [Pg.63]    [Pg.107]    [Pg.23]    [Pg.621]    [Pg.407]    [Pg.261]    [Pg.875]    [Pg.83]    [Pg.142]    [Pg.142]    [Pg.96]    [Pg.1401]    [Pg.208]   
See also in sourсe #XX -- [ Pg.73 , Pg.74 ]

See also in sourсe #XX -- [ Pg.915 ]




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