Author: Publisher: DIANE Publishing
ISBN: 142891384X
Category :
Languages : en
Pages : 44
Book Description
Freezing Temperature Protection Admixture for Portland Cement Concrete
Author: Publisher: DIANE Publishing
ISBN: 142891384X
Category :
Languages : en
Pages : 44
Book Description
Chemical Admixtures for Concrete
Author: Sandra SenftPublisher: CRC Press
ISBN: 0203017242
Category : Architecture
Languages : en
Pages : 456
Book Description
Chemical admixtures are used in concrete mixtures to produce particular engineering properties such as rapid hardening, water-proofing or resistance to cold. Chemical Admixtures for Concrete surveys recent developments in admixture technology, explaining the mechanisms by which admixtures produce their effects, the various types of admixtures avail
Special Report
Author: Antifreeze Admixtures for Concrete
Author: Cold Regions Research and Engineering Laboratory (U.S.)Publisher:
ISBN:
Category : Antifreeze solutions
Languages : en
Pages : 52
Book Description
The goal of this project was to develop a chemical admixture that would reduce the need for wintertime thermal protection of freshly placed concrete. Chemicals were investigated for their ability to promote strength gain in concrete cured below 0 deg C. The project was carried out in five phases. Phase 1 evaluated existing and new admixtures. Phase 2 measured the effect of promising chemicals on concrete properties. Phases 3 and 4 tested the practicality of using the new technology/admixture in the field. Phase 5 disseminated the findings through an Army conference and through the development of this report, in addition to normal W.R. Grace advertising channels. Laboratory strength tests established that two prototype admixtures were capable of protecting concrete down to -5 deg C. Results from other laboratory tests show that the chemicals pose no harm to the concrete or embedded ferrous metals. Concrete containing the prototype admixtures passes standard freeze-thaw tests, does not shrink unusually, does not contain harmful alkalis, and does not produce irregular hydration products. Field tests clearly demonstrated that working with these new admixtures requires no new skills. The concrete can be mixed at lower temperatures, saving energy. The admixtures are easily dosed into the mixing trucks, as is normal practice today, and concrete is finished in the usual manner. Estimates show that the two prototype admixtures can extend the construction season by as much as three months in the contiguous United States. The prototype has proved that low-temperature admixtures are possible. The industry partner sees the need to develop admixtures that will work to -10 deg C before going commercial with this technology.
Freezing Temperature Protection Admixture for Portland Cement Concrete
Author: Charles J. KorhonenPublisher:
ISBN:
Category : Cement
Languages : en
Pages : 52
Book Description
Energy and Water Development Appropriations for 1992: Corps of Engineers, North Atlantic Division
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water DevelopmentPublisher:
ISBN:
Category : Energy development
Languages : en
Pages : 1276
Book Description
Energy and Water Development Appropriations for 1992
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water DevelopmentPublisher:
ISBN:
Category : Energy development
Languages : en
Pages : 1288
Book Description
The National Highway System and Ancillary Issues Relating to Highway and Transit Programs
Author: United States. Congress. House. Committee on Public Works and Transportation. Subcommittee on Surface TransportationPublisher:
ISBN:
Category : Federal aid to transportation
Languages : en
Pages : 982
Book Description
Energy and Water Development Appropriations for 1994
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water DevelopmentPublisher:
ISBN:
Category : Nature
Languages : en
Pages : 580
Book Description
Author: