By Diane Throop, Richard E. Klingner
STP 1432 presents nineteen peer-reviewed papers on old, present, and estimated masonry matters, starting from reviews of the habit of ancient masonry, via simple study into the habit and power program of leading edge masonry fabrics. topics hide ancient constructions, fabric checking out, assessment strategies, and new items and structures. This new booklet is a necessary technical source for these concerned n the creation, layout, or trying out of masonry items or assemblies, together with designers, brands, engineers, architects, or experts.
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Additional info for Masonry: Opportunities for the 21st Century (ASTM Special Technical Publication, 1432)
Example text
The addition of Portland cement to the sample surface was also observed in wet and dry states. Mortars made with Portland cement and the lime-sand-slurries were tested for rheological properties and flow, and formed into 2-in cube specimens for compressive strength testing. The mortars were also used in a brick prism for examination o f the hardened microstructure. Materials Type S lime - - special hydrated lime for masonry purposes - - is the most commonly used form of hydrated lime in masonry mortars, particularly because it is able to develop high, earlier plasticity and higher water retentivity than normal hydrated lime (Type N).
This paper deals with one example of that process, involving pozzolanic mortar. This material, invented by the Romans over two thousand years ago, has been improved substantially, and mortars and stuccos can be produced with high concentrations ofpozzolans. Pozzolans improve the performance of those products, and are thus much more than inexpensive fillers. They also have been accepted with enthusiasm by masons. As a by-product of the research necessary to develop commercially successful pozzolans, it was found that selection of the proper pozzolan was extremely important.
These ashes do not comply with the requirements of C 618. Functions of Mortar Mortar has many functions in a building. Some of these functions include holding brick apart, bonding brick together, and keeping moisture from penetrating the wall, as well as aesthetics. A mortar must not only satisfy the ASTM and Building Code requirements, but it must satisfy the needs of the mason on the job-site. What satisfies an engineer in a mortar and what satisfies a mason often seem mutually exclusive. The mason judges a mortar based on workability and production.