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Articles on different aspects of information you may need when building a patio or an outdoor living space.

For information on residential concrete restoration

Composite materials are engineering materials made from two or more components. One component is often a strong fiber such as fiberglass, quartz, kevlar or carbon fiber that gives the material its tensile strength, while another component (called a matrix) is often a resin such as polyester or epoxy that binds the fibers together, transferring load from broken fibers to unbroken ones and between fibers that are not oriented along lines of tension. Also, unless the matrix chosen is especially flexible, it prevents the fibers from buckling in compression. Some composites use an aggregate instead of, or in addition to, fibers.



The production of cement and concrete

Portland cement was patented in England by Joseph Aspdin in 1824. Limestone is mixed with other additives containing iron, alumina and silica in definite proportions. This mixture is finely ground in a raw mill. The resultant raw mix is burned in a rotary kiln at temperatures at about 1 400 degrees Celsius to form clinker. The clinker nodules are then ground with about 3 % gypsum to produce cement with a fineness typically of less than 90 micrometers.

Foundations:

The Water content and soil density is not always even uniform in the building area for a standard house. When this happens, the soil may rise or contract differently and cause serious damage to the foundation, causing it to potentially sink, or even severely crack the foundation itself. The danger of this kind of damage is not even limited to finically. Uneven floors can be a nasty result with very unpleasant consequences. It can created tripping hazards, damage pipelines or wires running below the house, or affect the effectiveness of a drainage system.

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