A tremie is a watertight pipe, usually of about mm inside diameter to mm ,  with a conical hopper at its upper end above the water level. It may have a loose plug or a valve at the bottom end. A tremie is used to pour concrete underwater in a way that avoids washout of cement from the mix due to turbulent water contact with the concrete while it is flowing. This produces a more reliable strength of the product. Common applications include the following.
Effects of adding Bauxite and Oyster shell on the properties of metakaolin-based geopolymer cements
Cement and Concrete Research - Journal - Elsevier
The aim of Cement and Concrete Research is to publish the best research on the materials science and engineering of cement, cement composites, mortars, concrete and other allied materials that incorporate cement or other mineral binders. In doing so, the journal will focus on reporting major results of research on the properties and performance of cementitious materials; novel experimental techniques; the latest analytical and modelling methods; the examination and the diagnosis of real cement and concrete structures; and the potential for improved materials. The fields which the journal aims to cover are:. Papers dealing with corrosion will be considered provided their clearly relate to process fundamentally affected by the interplay between steel reactivity and a surrounding cementitious material. The journal's principal publications are original articles containing new information, major reviews and selected papers from important conferences.
US7628850B2 - Method of producing metakaolin - Google Patents
Applied Clay Science aims to be an international journal attracting high quality scientific papers on clays and clay minerals, including research papers, reviews, and technical notes. The journal covers typical subjects of Fundamental and Applied Clay Science such as:. Benefits to authors We also provide many author benefits, such as free PDFs, a liberal copyright policy, special discounts on Elsevier publications and much more. Please click here for more information on our author services. Your Paper Your Way We now differentiate between the requirements for new and revised submissions.
Geopolymers are inorganic , typically ceramic, alumino-silicate forming long-range, covalently bonded, non-crystalline amorphous networks. Obsidian volcanic glass fragments are a component of some geopolymer blends. The properties and uses of geopolymers are being explored in many scientific and industrial disciplines: modern inorganic chemistry, physical chemistry, colloid chemistry, mineralogy, geology, and in other types of engineering process technologies.