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[1] [2] [3] Common rock types used include granite and modular concrete blocks. [4] [5] Rubble from building and paving demolition is sometimes used, [3] [6] as well as specifically designed structures called tetrapods or similar concrete blocks. Riprap is also used underwater to cap immersed tubes sunken on the seabed to be joined into an ...
Rubble masonry or rubble stone is rough, uneven building stone not laid in regular courses. [ 1 ] [ 2 ] It may fill the core of a wall which is faced with unit masonry such as brick or ashlar . Some medieval cathedral walls have outer shells of ashlar with an inner backfill of mortarless rubble and dirt.
A pallet of "8-inch" concrete blocks An interior wall of painted concrete blocks Concrete masonry blocks A building constructed with concrete masonry blocks. A concrete block, also known as a cinder block in North American English, breeze block in British English, or concrete masonry unit (CMU), or by various other terms, is a standard-size rectangular block used in building construction.
Rubble masonry. Use of rubble in masonry: antonymous to ashlar masonry. Can be infill in an ashlar wall, used in cyclopean concrete, and other contexts. [4] The term is antonymous to "ashlar". Dry stone. Stone walls built without mortar, using the shape of the stones, compression, and friction for stability. [4]
Masonry walls have an endothermic effect of its hydrates, as in chemically bound water, unbound moisture from the concrete block, and the poured concrete if the hollow cores inside the blocks are filled. Masonry can withstand temperatures up to 1,000 °F (538 °C) and it can withstand direct exposure to fire for up to 4 hours. [citation needed ...
For example, the tholos tombs of Bronze Age Mycenae use ashlar masonry in the construction of the so-called "beehive" dome. This dome consists of finely cut ashlar blocks that decrease in size and terminate in a central capstone. [10] These domes are not true domes, but are constructed using the corbel arch.
Rubble-work on Wyggeston's Chantry House in Leicester, built c. 1511 "Rubble-work" is a name applied to several types of masonry. [1] One kind, where the stones are loosely thrown together in a wall between boards and grouted with mortar almost like concrete, is called in Italian "muraglia di getto" and in French "bocage". [1]
Originally, and in later poorly constructed walls, the rubble was not consolidated. Later, mortar and cement were used to consolidate the core rubble and produce sturdier construction. Modern masonry still uses core and veneer walls; however, the core is now generally concrete block instead of rubble, and moisture barriers are included. [2]