A Treatise on Civil EngineeringJ. Wiley & Son, 1873 - 513 pages |
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Page 23
... sufficient amount to injure mortar made from them , by their efflorescence . 50. PHYSICAL CHARACTERS AND TESTS OF HY- DRAULIC LIMESTONES . The simple external characters of a limestone , as color , texture , fracture , and taste , are ...
... sufficient amount to injure mortar made from them , by their efflorescence . 50. PHYSICAL CHARACTERS AND TESTS OF HY- DRAULIC LIMESTONES . The simple external characters of a limestone , as color , texture , fracture , and taste , are ...
Page 37
... sufficient to draw air in at the open doorways , through the entire mass of cement and raw stone , to the open flue , which is the one by the cut - off . " In passing through the burnt cement the air takes up the residue of heat and ...
... sufficient to draw air in at the open doorways , through the entire mass of cement and raw stone , to the open flue , which is the one by the cut - off . " In passing through the burnt cement the air takes up the residue of heat and ...
Page 38
... sufficient sand to cover them up when the slaking is nearly completed . The stone is then sprinkled with about one fourth its bulk of water , poured through the rose of a watering - pot , those lumps which seem to slake most sluggishly ...
... sufficient sand to cover them up when the slaking is nearly completed . The stone is then sprinkled with about one fourth its bulk of water , poured through the rose of a watering - pot , those lumps which seem to slake most sluggishly ...
Page 41
... sufficient to restore damaged hydraulic cements . 95. " As a rule , all hydraulic cements produced at a low heat , whether derived from argillaceous or argillo - magnesian lime - stones , are light in weight and quick - setting , and ...
... sufficient to restore damaged hydraulic cements . 95. " As a rule , all hydraulic cements produced at a low heat , whether derived from argillaceous or argillo - magnesian lime - stones , are light in weight and quick - setting , and ...
Page 42
... sufficient consistency , is dried by artificial heat and then calcined , at a high tempera- ture , to the verge of vitrification . It is then reduced for use to a very fine powder . It is said not to deteriorate from ex- posure to the ...
... sufficient consistency , is dried by artificial heat and then calcined , at a high tempera- ture , to the verge of vitrification . It is then reduced for use to a very fine powder . It is said not to deteriorate from ex- posure to the ...
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Common terms and phrases
abutments action arch arranged axis bars beam béton blocks bolts bottom breaking strain brick bridge caisson calcined carbonic carbonic acid cast iron centre chord clay compression concrete construction counterforts courses cross curved cylinder deflection depth diameter dimensions durability effect embankment engineer excavation experiments exterior feet foundation fracture give hard heat Hodgkinson horizontal hot blast hydraulic cement hydraulic lime hydraulic mortar immersion interior joints kiln laid layer length less limestones lock lower masonry mastic material ments metal mortar ordinary piers pillars placed plates portion Portland cement pressure proportion purpose rails resistance roadway sand sheeting piles side slaked sleepers soffit soil solid specific gravity specimen spikes square inch steel stone strength structure struts suitable surface temperature tensile tensile strength termed thickness timber tion transverse strain truss upper usually vertical voussoirs wall weight wrought iron yield
Popular passages
Page 136 - ... elasticity ; and judging from its slow increase afterwards, I was persuaded that it had not come on by a sudden change, but had existed, though in a less degree, from a very early period.
Page 517 - SELECTED FRUITS, From Downing's Fruits and FruitTrees of America. With some new varieties, including their Culture, Propagation, and Management in the Garden and Orchard, with a Guide to the selection of Fruits, with reference to the Time of Ripening. By Chas. Downing. Illustrated with upwards of four hundred outlines of Apples,. Cherries, Grapes, Plums, Pears, &c. 1 vol., 12mo.., .$2'50" 6 » LOUDON'S GARDENING FOR LADIES, AND COMPANION TO THE FLOWER-GARDEN.
Page 347 - ... Harvard University. This he has laid out in a beautiful park to be free to the public, and with the name " The Serpent Mound Park." It is in a wild and picturesque country and must eventually be a favorite place of public resort. The Professor, who is an accomplished archaeologist, regards this as one of the most remarkable structures of its kind in the world. His description of the work is as follows: " The head of the serpent rests on a rocky platform which presents a precipitous face to the...
Page 422 - ... is increased to from six to twelve inches. The transversal joints are usually continuous, and those in the direction of the axis of the road break joints. In some cases the blocks are so laid that the joints make an angle of 45° with the axis of the roadway, one set being continuous, the other breaking joints with them.
Page 429 - Too great attention cannot be bestowed upon keeping the road-surface free from an accumulation of mud and even of dust. It should be constantly cleaned by scraping and sweeping. The repairs should be daily made by adding fresh material upon all points where hollows or ruts commence to form. It is recommended by some that when fresh material is added, the surface on which it is spread should be broken with a pick to the depth of half an inch to an inch, and the fresh material be well settled by ramming,...
Page 489 - ... culvert. If the water of the brook is generally limpid, and its current gentle, it may, in the last case, be received into the canal. The communication of the brook, or feeder, with the canal, should be so arranged that the water may be shut off, or let in at pleasure, in any quantity desired. For this purpose a cut is made through the side of the canal, and the sides and bottom of the cut are faced with masonry laid in hydraulic mortar.