A mix design procedure for high-performance concrete mixes has been presented in this paper. Since rheological parameters and compressive strength are fundamental properties of concrete in two different stages of production, the correlation between rheological parameters and compressive strength has ...
Technical Questions and Answers Archive. The ASA Technical Questions & Answers is a free service offered to all users, but primarily intended for engineers, architects, owners and anyone else who may be specifying the shotcrete process and/or has need for a possible answer to a technical question.
Masonry -- brick, stone, terra-cotta, and concrete block -- is found on nearly every historic building. Structures with all-masonry exteriors come to mind immediately, but most other buildings at least have masonry foundations or chimneys.
Fine and coarse aggregates make up the bulk of a concrete mixture. Sand, natural gravel, and crushed stone are used mainly for this purpose. Recycled aggregates (from construction, demolition, and excavation waste) are increasingly used as partial replacements for natural aggregates, while a number of manufactured aggregates, including air-cooled blast furnace slag and bottom ash are also ...
Jamaican political leader, who was a staunch proponent of the Black nationalism and Pan-Africanism movements, founder the Universal Negro Improvement Association and African Communities League (UNIA-ACL), founder of the Black Star Line, which promoted the return of the African diaspora to their ancestral lands.
The Gateway to Up-To-Date Information on Integrated 'Whole Building' Design Techniques and Technologies. The goal of 'Whole Building' Design is to create a successful high-performance building by applying an integrated design and team approach to the project during the planning and programming phases.
Concrete Slab Maintenance. Concrete is one of the most durable building materials, but it does require occasional repair and maintenance. Problems can be caused by outside forces such as freezing water, structural problems or surface damage, which is usually caused by improper finishing methods or poorly mixed concrete.