A wellbore cement composition includes substantially unhydrated cement powder and additive powder for cement. The additive powder is formulated from ingredients including a liquid additive for cement and solid carrier particles. The liquid additive is absorbed by the solid carrier particles. A wellbore cementing method includes using a dry cement composition, adding water to the dry cement composition, forming a cement slurry, placing the slurry in a wellbore, and setting the placed slurry. The dry cement composition contains substantially unhydrated cement powder and retarder powder for cement. The retarder powder contains a retarder absorbed by solid carrier particles.

A method for manufacturing a supplementary cementitious material has improved reactivity from waste concrete, wherein a starting material including waste concrete is provided, subjected to carbonation to provide a carbonated product having a carbonation degree of at least 50%, and the carbonated product is heat treated at a temperature ranging from 120 to 350 C. until constant mass to provide the supplementary cementitious material with improved reactivity. The obtained supplementary cementitious material can be used to manufacture composite cements.

The present invention relates to a binder composition comprising (i) a phospho-magnesium cement; (ii) a boron source; (iii) a lithium salt; and (iv) water and to its preparation method. The present invention also relates to the use of such a binder for confining wastes and notably nuclear wastes containing aluminum metal.

The present invention relates to a binder composition comprising (i) a phospho-magnesium cement; (ii) a boron source; (iii) a lithium salt; and (iv) water and to its preparation method. The present invention also relates to the use of such a binder for confining wastes and notably nuclear wastes containing aluminum metal.

Roofing granules comprising agglomerated inorganic material, and building materials, such as shingles, that include such roofing granules. By fabricating roofing granules from agglomerating inorganic material, in combination with a binder composition having a wetting agent, it is possible to increase the yield of the fabricated roofing granules and tailor the particle size distribution so as to provide optimal shingle surface coverage, thus reducing shingle weight and usage of raw materials. Additionally, the use of agglomeration permits the utilization of by-products from conventional granule production processes.

Roofing granules comprising agglomerated inorganic material, and building materials, such as shingles, that include such roofing granules. By fabricating roofing granules from agglomerating inorganic material, in combination with a binder composition having a wetting agent, it is possible to increase the yield of the fabricated roofing granules and tailor the particle size distribution so as to provide optimal shingle surface coverage, thus reducing shingle weight and usage of raw materials. Additionally, the use of agglomeration permits the utilization of by-products from conventional granule production processes.

Solar reflective polymer-based granules are disclosed. Each of the solar reflective polymer-based granules includes a powder mixture including at least one functional pigment and a functional mineral filler and a polymer carrier extruded with the powder mixture. The at least one functional pigment is selected from the group consisting of an inorganic pigment, a white pigment, an infrared reflective pigment, and mixtures thereof. In various embodiments, the functional mineral filler is present in the polymer-based granules in an amount of from about 5 wt. % to about 80 wt. %, based on a total weight of the polymer-based granules. The resultant polymer-based granules have a solar reflectivity of greater than or equal to 8% when measured using a solar reflectometer.

Solar reflective polymer-based granules are disclosed. Each of the solar reflective polymer-based granules includes a powder mixture including at least one functional pigment and a functional mineral filler and a polymer carrier extruded with the powder mixture. The at least one functional pigment is selected from the group consisting of an inorganic pigment, a white pigment, an infrared reflective pigment, and mixtures thereof. In various embodiments, the functional mineral filler is present in the polymer-based granules in an amount of from about 5 wt. % to about 80 wt. %, based on a total weight of the polymer-based granules. The resultant polymer-based granules have a solar reflectivity of greater than or equal to 8% when measured using a solar reflectometer.

The present invention relates to a mortar with a composition comprising the following components expressed in percentage by weight: 65-69% calcium sulphate; 28-33% water; and 0.01-0.1% polycarboxylic acid-based setting control additive. The invention also relates to a construction material with a composition that consists of a mortar mixture such as the aforementioned mixture and a granular material selected from among ethyl vinyl acetate, cork or marble powder. According to the invention, the construction material can be used to produce construction parts, blocks or panels, and the parts produced with said construction material can be attached to each other and/or coated with the mortar.

The present invention provides a concrete masonry unit composition for automated block machines, comprising cement, aggregate, sand and microbeads with respect to total weight of the composition. After a predetermined number of days, the composition forms a plurality of concrete masonry units that meet the requirements under standards ASTM C90 as measured according to ASTM C140. Each of the concrete masonry units comprises a solid portion and at least one hollow portion boring through the solid portion. The solid portion comprises 0.25 to 0.5 percent of microbeads with respect to total weight of the composition.