Search results
Results from the WOW.Com Content Network
Concrete is a material that is very strong in compression, but relatively weak in tension. To compensate for this imbalance in concrete's behavior, rebar is cast into it to carry the tensile loads. Most steel reinforcement is divided into primary and secondary reinforcement:
However, other materials are often used to reinforce concrete e.g. organic and inorganic fibres, composites in different forms. While compared to its compressive strength, concrete is weak in tension. Thus adding reinforcement increases the strength in tension.
Since the last quarter of the 20th century, phenolic resin and cellulose based compound materials have been used as an alternative to ebony and rosewood to make stringed instrument fingerboards. [3] From 2012 to 2018 guitarmaker Gibson used Richlite, a paper composite material, for the fingerboard on several top-of-the-line production guitars.
A composite material (also called a composition material or shortened to composite, which is the common name) is a material which is produced from two or more constituent materials. [1] These constituent materials have notably dissimilar chemical or physical properties and are merged to create a material with properties unlike the individual ...
Papercrete is a building material that consists of re-pulped paper fiber combined with Portland cement or clay, as well as other soils. First patented in 1928 by Eric Patterson and Mike McCain [ 1 ] (who originally named it "padobe" and "fibrous cement"), it was revived during the 1980s.
Rebar is the most common form of concrete reinforcement. It is typically made from steel, manufactured with ribbing to bond with concrete as it cures. Rebar is versatile enough to be bent or assembled to support the shape of any concrete structure. Carbon steel is the most common rebar material.
The physical properties make it the preferred material for applications such as road base and sub-base. This is because recycled aggregates often have better compaction properties and require less cement for sub-base uses. Furthermore, it is generally cheaper to obtain than virgin material. [4]
A Johnson bar (also Johnson corrugated bar) is a type of corrugated high-carbon steel [1] rebar used to reinforce concrete.. The Johnson bar was invented by A.L. Johnson [2] of the St. Louis Expanded Metal Company.