Question: The flooring of the Palmetto Theater has a composite material that consists of chips of what?
Context: In solvent casting and particulate leaching (SCPL), a polymer is dissolved in an organic solvent.  Particles, mainly salts, with specific dimensions are then added to the solution.  The mixture is shaped into its final geometry.  For example, it can be cast onto a glass plate to produce a membrane or in a three-dimensional mold to produce a scaffold.  When the solvent evaporates, it creates a structure of composite material consisting of the particles together with the polymer.  The composite material is then placed in a bath which dissolves the particles, leaving behind a porous structure. A fiber-reinforced composite (FRC) is a composite building material that consists of three components: (i) the fibers as the discontinuous or dispersed phase, (ii) the matrix as the continuous phase, and (iii) the fine interphase region, also known as the interface.  This is a type of advanced composite group, which makes use of rice husk, rice hull, and plastic as ingredients.  This technology involves a method of refining, blending, and compounding natural fibers from cellulosic waste streams to form a high-strength fiber composite material in a polymer matrix.  The designated waste or base raw materials used in this instance are those of waste thermoplastics and various categories of cellulosic waste including rice husk and saw dust. Reinforced concrete (RC) is a composite material in which concrete's relatively low tensile strength and ductility are counteracted by the inclusion of reinforcement having higher tensile strength or ductility.  The reinforcement is usually, though not necessarily, steel reinforcing bars (rebar) and is usually embedded passively in the concrete before the concrete sets.  Reinforcing schemes are generally designed to resist tensile stresses in particular regions of the concrete that might cause unacceptable cracking and/or structural failure.  Modern reinforced concrete can contain varied reinforcing materials made of steel, polymers or alternate composite material in conjunction with rebar or not.  Reinforced concrete may also be permanently stressed (in tension), so as to improve the behaviour of the final structure under working loads.  In the United States, the most common methods of doing this are known as pre-tensioning and post-tensioning. Composite baseball bats, opposed to aluminum or wood baseball bats, incorporate a reinforced carbon fiber polymer, or composite, into the bat's construction.  This composite material can make up all or part of the bat.  Bats made entirely of this polymer are referred to as composite bats.  Bats which only incorporate a portion of polymer (and the rest either wood or an aluminum alloy) are referred to as composite hybrid bats.  These composite material provides an advantage over aluminum alloys and wood in durability, weight distribution, improved trampoline effect, and a higher damping rate (to reduce hand sting). A void is a pore that remains unoccupied in a composite material.  A void is typically the result of an imperfection from the processing of the material and is generally deemed undesirable.  Because a void is a non-uniformity in a composite material, it can affect the mechanical properties and lifespan of the composite.  Voids can act as a crack nucleation site as well as allow moisture to penetrate the composite and contribute to anisotropy of the composite .  This is an issue because crack formation and propagation can create unpredictable behavior in the laminate.  For aerospace applications, a void content of approximately 1% is appropriate for performance while other grades of composites can have between 3%-5% void content.  A small change in the percentage of void content may not seem like a large problem however for a loaded carbon fiber laminate composite, a 1%-3% increase in void content can reduce the mechanical properties of the composite by up to 20% Void content in composites is represented as a ratio, also called void ratio, where the volume of voids, solid material, and bulk volume are taken into account.  Void ratio can be calculated by the formula below where e is the void ratio of the composite, V is the volume of the voids, and V is the volume of the bulk material. Terrazzo is a composite material, poured in place or precast, which is used for floor and wall treatments.  It consists of chips of marble, quartz, granite, glass, or other suitable material, poured with a cementitious binder (for chemical binding), polymeric (for physical binding), or a combination of both.  Metal strips divide sections, or changes in color or material in a pattern.  Additional chips may be sprinkled atop the mix before it sets.  After it is cured it is ground and polished smooth or otherwise finished to produce a uniformly textured surface. Fiber volume ratio is an important mathematical element in composite engineering.  Fiber volume ratio, or fiber volume fraction, is the percentage of fiber volume in the entire volume of a fiber-reinforced composite material.  When manufacturing polymer composites, fibers are impregnated with resin.  The amount of resin to fiber ratio is calculated by the geometric organization of the fibers, which affects the amount of resin that can enter the composite.  The impregnation around the fibers is highly dependent on the orientation of the fibers and the architecture of the fibers.  The geometric analysis of the composite can be seen in the cross-section of the composite.  Voids are often formed in a composite structure throughout the manufacturing process and must be calculated into the total fiber volume fraction of the composite.  The fraction of fiber reinforcement is very important in determining the overall mechanical properties of a composite.  A higher fiber volume fraction typically results in better mechanical properties of the composite. Palmetto Theater was a historic movie theater located at Spartanburg, Spartanburg County, South Carolina.  It was built in 1940-1941, and was a one-story, rectangular plan brick building.  It featured a large marquee and a separate shop storefront decorated in blue Carrera-glass panels.  The interior featured double balconies, Terrazzo flooring, large Art Deco light fixtures, decorative wall painting, and a plaster Art Deco screen surround. Effective medium approximations or effective medium theory (sometimes abbreviated as EMA or EMT) pertains to analytical or theoretical modeling that describes the macroscopic properties of composite materials. EMAs or EMTs are developed from averaging the multiple values of the constituents that directly make up the composite material.  At the constituent level, the values of the materials vary and are inhomogeneous.  Precise calculation of the many constituent values is nearly impossible.  However, theories have been developed that can produce acceptable approximations which in turn describe useful parameters and properties of the composite material as a whole.  In this sense, effective medium approximations are descriptions of a medium (composite material) based on the properties and the relative fractions of its components and are derived from calculations. Mallite is a type of laminate composite material, formerly manufactured by the "William Mallinson & Sons" company.  The material is formed of a core sheet of end grain balsa wood, faced by duralumin sheets.  This construction endows the finished material with greater strength and rigidity than a light alloy sheet of equal mass.  The material was originally developed in the late 1950s for use in the aerospace industry, primarily for use in flooring and internal partitioning in jet airliner construction.  However, it found fame as one of the first engineered composite materials to be employed in the motorsport industry.  Robin Herd, formerly a designer on the Concorde project, used his aerospace knowledge to design the first McLaren single-seater racing cars.  The M2A prototype used Mallite extensively, throughout its construction.  The final production model, the Formula One McLaren M2B of 1966, only used Mallite for its internal skins and lower bodywork; a lack of understanding of the material's properties had led the team to design the car with conventional curved bodywork, creating problems during the fabrication process as the inherently inflexible material would not readily conform to complex, compound curvatures.  With greater understanding of Mallite's properties Herd later used the material to construct the unraced Cosworth four-wheel drive Formula One car of 1969, noted for its slab-sided, angular looks.
Answer: marble, quartz, granite, glass