Abstract: A composition includes an admixture of a cementitious component and a cellulosic component. The cellulosic component includes a cellulosic fibrous material and water. The admixture is suitable for mixing with a second amount of water to form a hardened material. A method includes reducing a cellulosic fiber material to produce a fiber fragment material, treating the fiber fragment material, and rinsing the treated fiber fragment product with water to form a rinsed fiber fragment material. Treating the fiber fragment material includes admixing the fiber fragment material and water to form an admixture, heating the admixture, agitating the admixture, and separating a treated fiber fragment product from the admixture. The method is effectively controlled so that the rinsed fiber fragment material is suitable for reacting with a cementitious component to form a hardened material.

Abstract: This invention is a composition comprising an admixture of one or more cementitious component(s) and one or more cellulosic component. The cellulosic components comprise a defined size and a defined aspect ratio and an amount of water which is within a range effective to impart characteristic in a final hardened product. Importantly, the present invention allows the reduction/elimination of the aggregate and sand content of concrete and similar material without loss of associated properties. Unexpectedly, there are significant improvements of some of the properties.

Abstract: Methods are provided for acidizing treatment of a permeable matrix by infusing a pre-acidizing composition and an activating composition. Components of the pre-acidizing composition include hydrochloric acid, phosphoric acid, a hydroxy carboxylic acid and a dicarboxy acid.