This section is from the book "A Practical Treatise On The Joints Made And Used By Builders", by Wyvill J. Christy. Also available from Amazon: Practical treatise on the joints made and used by builders.
This is explained in the Mason's Section and is employed in order to fill the open joints and splits in the interior of brick walls which flushing will not reach. The mortar should if possible be quick setting. As Portland cement has the power of rejecting a superfluity of water its use may be countenanced where saturating the brickwork is of no consequence; and in considering the value of the practice it is obvious that it ought never to be regarded as anything beyond a bad alternative for wet bricks and stiff mortar, the odds being in favour of grouting when dry bricks are preferred. The utmost care, however, is needed in grouting the oversailing courses, etc, when the overhang is considerable, owing to the chance of the lime swelling, or of its being drowned, or of the bedding being loosened. In paving with bricks, tiles, tesserae, quarries, etc, these are first laid on a bed of cement, screeded or floated to the approved fall, and then the joints are run with cement grout, all excess being completely wiped off before setting, else it will be very difficult to remove. Stables are paved with Musgrave's adamantine clinkers placed on edge with open joints upon a bed of concrete, laid with a slight fall in every direction to the surface drain, and also in such a way that the surface of the finished paving may be a little above that of the drain. The open joints are then run with cement grouting, the surplusage being at once cleaned off.
Hacked-Out Joint occurs when covering the exterior of old buildings with stucco, the joints having to be well hacked out and wetted to give the stuff sufficient hold or key.
High Joint is Another Name For Flush Jointed Joint
Hollow Joint occurs when the inside of work is not flushed solid, and is usual in fence walls. Bed joints when not subsequently filled up with grouting are also left hollow when different thicknesses of bricks have to be worked in together, because the bricklayer cannot spread out his mortar to form a bed for the thicker bricks, else he would lose his gauge. Consequently he draws a little mortar along the front and back edges and lays the bricks with a hollow joint. This kind of joint, however, is necessary in some situations, as for instance under window sills, which should be set so as to bear on their ends, with a hollow joint between them to allow for the piers settling more than.the work under the apertures.
Jointed or Jointer Joint is formed by drawing the tool called a jointer, which is often nothing more than a suitable piece of old iron, along the joint so as to strike a central indented line as shown in Fig. 8, The similarity between a drawn and a jointed joint is here apparent.