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Frequent ly, the human body is susceptible to injuries such as the fracture of one or more of its bones, so it is necessary to use implants or some fixation element to keep the fragments of the fracture together, allowing an orderly repair that facilitates healing or compensates the lack or loss of bone tissue. Temporary orthopedic implants have been used clinically to repair broken or fractured bones during the healing process. The most used are plates, screws, nails, wires, and intramedullary nails. It is usual ly necessary to perform operations to open the injury site, join the bony pieces with these elements, wait long enough to allow the bones to heal, and then remove them in a second surgery.
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HISTORICAL DOCUMENT. Defines the Thorough Cleaning (WJ-3) degree of surface cleanliness - one of four levels (WJ- 1,2,3,4) achieved by the use of waterjet cleaning.
The purpose of this technical committee report is to provide specifiers, designers, and corrosion control personnel information to control the corrosion of conventional reinforcing steel in hydraulic cement concrete using corrosion inhibiting admixtures.
This report describes several types of materials used as corrosion inhibiting admixtures, their selection and evaluation, their proportioning into freshly mixed concrete, and their effects on fresh and hardening/hardened concrete. Corrosion inhibiting admixtures may help delay corrosion initiation and extend the interval of corrosion propagation.
New for 2018! This NACE International state-of-the-art report contains information about materials that provide a corrosion-resistant alternative to plain carbon steel reinforcing bar (rebar). The report is intended for use by engineers when considering the use of alternative concrete reinforcement and post- or prestressing strand materials with higher corrosion resistance than that of conventional carbon steel alloys.
One of the key factors affecting ship performance, particularly fuel consumption and associated GHG (Green House Gas) emissions, is the degree of biofouling on the immersed hull and propeller(s). Rates of biofouling accumulation vary considerably, depending on the suitability, age and physical condition of the coating system(s) applied to the hull, the voyaging, anchoring and lay up patterns of the ship, and the geographical regions where these take place.
HISTORICAL DOCUMENT. This NACE International standard practice establishes the general principles to be adopted to minimize the effects of stray current corrosion caused by direct current (DC) and/or alternating current (AC) from external sources on steel reinforced concrete (RC) and prestressed concrete (PC) structures or structural elements. The standard practice offers guidance for the design of concrete structures that may be subject to stray-current corrosion; the detection of stray current interference; the selection of protection measures; and the selection of mitigation methods.
This NACE/SSPC joint standard defines the Very Thorough Cleaning (WJ-2) degree of surface cleanliness of coated or uncoated metallic substrates achieved by the use of waterjet cleaning prior to the application of a protective coating or lining. Waterjet cleaning is the use of pressurized surface preparation water for removing coatings and other materials, including hazardous materials, from a substrate to achieve a defined degree of surface cleanliness. Waterjet clean- ing includes various methods such as low-pressure water cleaning (LP WC), high-pressure water cleaning (HP WC), high-pressure waterjetting (HP WJ), and ultrahigh-pressure waterjetting (UHP WJ).
This NACE/SSPC joint standard defines the Clean to Bare Substrate (WJ-1) degree of surface cleanliness of coated or uncoated metallic substrates achieved by the use of waterjet cleaning prior to the application of a protective coating or lining. Waterjet cleaning is the use of pressurized surface preparation water for removing coatings and other materials, including hazardous materials, from a substrate to achieve a defined degree of surface cleanliness. Waterjet clean- ing includes various methods such as low-pressure water cleaning (LP WC), high-pressure water cleaning (HP WC), high-pressure waterjetting (HP WJ), and ultrahigh-pressure waterjetting (UHP WJ).
Defines the Clean to Bare Substrate (WJ-1) degree of surface cleanliness of coated or uncoated metallic substrates achieved by the use of waterjet cleaning. Other degrees listed in overview below.
HISTORICAL DOCUMENT. Defines the Very Thorough Cleaning (WJ-1) degree of surface cleanliness - one of four levels (WJ- 1,2,3,4) achieved by the use of waterjet cleaning.
HISTORICAL DOCUMENT. Defines the Very Thorough Cleaning (WJ-2) degree of surface cleanliness - one of four levels (WJ- 1,2,3,4) achieved by the use of waterjet cleaning.