Displaying items by tag: patent

China: Hoffmann Green Cement, which produces clinker-free cement products has been granted a Chinese patent, No. CN 201880079822.X, for its clay-based H-EVA cement. The patent comes a year after a similar patent for its H-P2A binder.

H-EVA is a clinker-free cement that is based on an alkaline ettringitic technology. It uses activated clay and is presented in the form of a powder that can be stored in a silo. With a mechanical strength of up to 60MPa at 28 days, its strong technical performance makes it suitable for all types of concrete applications in buildings and on roads.

Julien Blanchard and David Hoffmann, co-founders of Hoffmann Green Cement Technologies, said "Following the granting of a first patent for our H-P2A technology, we are delighted to announce the strengthening of our intellectual property in the Chinese market with the granting of a patent for our clay-based H-EVA cement. This confirms once again our technological lead and the relevance of our low-carbon solutions".

China: China Building Materials Academy has patented a new 3D printing method which uses short rebars to reinforce printed layers. The developer says that this will enable builders to ensure structural strength without the disruption caused to 3D printing by the long rebars of conventional building skeletons.

China Building Materials Academy said that an 'inverted U-shaped or inverted L-shaped short rebar is vertically inserted into the cement slurry layer, wherein the bending mechanism comprises two bending members, separately disposed on two sides of a clamp.'

Greece: Titan Cement Group has secured an EU patent for its robotic remote preheater system, previously installed at the company’s Kamari cement plant in Viotia. Titan Cement Group designed the system to maximise operational efficiency and safety.

The company carried out a Euro25m precalciner installation at the Kamari plant in 2021 – 2022.

Malaysia: India-based Larsen & Toubro Ltd and Tamco Switchgear (Malaysia) have filed a patent application for a jointly developed switchgear panel structure. The companies’ customers include cement producers in Malaysia.

China: Hoffmann Green Cement Technologies has secured a Chinese patent for its high performance alkaline activation (H-P2A) geopolymer technology. The patent will enable it to begin to market its clinker-free cement in the country.

Co-founders Julien Blanchard and David Hoffmann said "We are very proud to extend the intellectual property of our H-P2A technology to a market with such great potential as China. The achievement of this first milestone marks our commitment to raising the barriers to entry in as many markets as possible around the world."

India: Sustainable roofing specialist Visaka Industries has acquired a 20-year patent for production of ATUM, a roofing system consisting of cement boards with integrated solar panels. The company says that the product, which has been in development since 2016, is both insulative and capable of generating up to 28W/m2 of power.

US: Solidia Technologies has filed a patent for a new hydraulic cement consisting of Ordinary Portland Cement (OPC) and other supplementary cementitious materials (SCM) including lime, alkali hydroxides, clay minerals and over 10% synthetic pozzolan.

Solidia Technologies said, “In order to reduce global CO₂ emissions it is necessary to adopt new approaches to create a new generation of hydraulic cements. The most efficient cement kiln can produce OPC clinker with an associated emission of 816 kg of CO₂/t. Blending the ground cement clinker with SCM, which have low or zero associated production CO2 emissions, reduces the total embodied CO₂ of the final product. Using a cement with the lowest possible clinker factor for a given application is the most common industry approach to reducing the CO₂ footprint of concrete.”

Europe: US-based company GCP Applied Technologies has received a European patent for increasing the efficiency of cement grinding by using sustainable raw materials. The grinding aids and quality improvers allow the use of bio-derived glycerol and reduce the use and the impact of oil-derived chemicals. The new Opteva and Tavero brand cement additives enable cement producers to reduce the energy consumption and the CO₂ emissions associated with cement production, with a reduced use, or no use at all, of oil-derived chemicals.

European Patent No. EP 1 728 771 B1 has been granted and registered into 17 European countries. The patent addresses methods for increasing the efficiency of cement and mineral grinding by using sustainable raw materials.

The patent relates to methods for improving the efficiency of grinding materials such as clinker and limestone, using glycerol derived from biofuel production, in combination with various grinding additives. GCP products can help to reduce the carbon footprint of cement and concrete. Grinding aids and quality improvers make cement manufacturing more efficient, while concrete admixtures can reduce the amount of cement needed to achieve a given strength specification.