...sometimes absorb considerable water, especially if they are silty in their character, but the fact lhat their pores are much coarser allows the water to escape...amount depending partly on the quantity of volatile element?, such as combined water, organic matter and carbon dioxide present in the clay, and partly...

...and thus often permits more rapid drying. The cracking of some fine-grained clays in drying is due to the surface shrinking more rapidly than the interior...some stage of the burning operation even though they sometimes expand slightly at certain temperatures (calcareous and many siliceous clays). The fire shrinkage,...

...comparing the physical tests of the clay and brick mixtures given on the later pages. in drying is due to the surface shrinking more rapidly than the interior...some stage of the burning operation even though they sometimes expand slightly at certain temperatures (calcareous and many siliceous clays). The fire shrinkage,...

...and thus often permits more rapid drying. The cracking of some fine-grained clays in drying is due to the surface shrinking more rapidly than the interior...some stage of the burning operation even though they sometimes expand slightly at certain temperatures (calcareous and many siliceous clays). The fire shrinkage,...

...comparing the physical tests of the clay and brick mixtures given on the later pages. in drying is due to the surface shrinking more rapidly than the interior...some stage of the burning operation even though they sometimes expand slightly at certain temperatures (calcareous and many siliceous clays). The fire shrinkage,...

...evaporation there is greatest. As the outer portion of the product cannot stretch, it must pull apart aiid crack. Fire shrinkage. — All clays shrink during...temperatures. The fire shrinkage varies within wide linJts, the amount depending partly on the quantity of volatile element', such as combined water, organic...

...but it was accompanied by a loss in the tensile strength of nearly 40 per cent. Fire-shrinkage. — All clays shrink during some stage of the burning...they may expand slightly at certain temperatures. The fire-shrinkage, like the air-shrinkage, varies within wide limits, the amount depending partly on the...

...shrinkage is refractory it also aids the clay in retaining its shape during burning. Fire Shrinkage.—All clays shrink during some stage of the burning operation,...slightly at certain temperatures. The fire shrinkage, like the air shrinkage, varies within wide limits, the amount depending partly on the quantity of volatile...

...to dilute the shrinkage is refractory it also aids the clay in retaining its shape during burning. Fire Shrinkage. — All clays shrink during some stage...slightly at certain temperatures. The fire shrinkage, like the air shrinkage, 26 1530° C. (2786° F.). The difference between any two successive numbers...

...to dilute the shrinkage is refractory it also aids the clay in retaining its shape during burning. Fire Shrinkage. — All clays shrink during some stage...slightly at certain temperatures. The fire shrinkage, like the air shrinkage, a 24 varies within wide limits, the amount depending partly on the quantity...