Provided is a method for altering properties of tension programmed fibrous shape memory polymer. The method can include applying a protective coating to the tension programmed shape memory polymer, then applying a supportive coating to the tension programmed shape memory polymer to form a coated fiber. The protective coating avoids contact between the shape memory polymer and chemicals used in the supportive coating that can decompensate the shape memory polymer.

A two-component system for forming adhesive bonds or for chemical anchoring comprises a curable binder component A and an activator component B. The component A comprises: A-1) an inhibited hydraulic binder selected from among calcium aluminate cement, calcium sulfoaluminate cement and mixtures thereof; the component B comprises: B-1) a curing activator. At least one of the components A and/or B comprises: V-1) an organic binder; and V-2) a filler having a Mohs hardness of at least 5. The system is an aqueous system which is unproblematical from a health point of view. It is easy to process and quickly attains high strengths.

Disclosed is a method for manufacturing a hydraulic binder including a calcium aluminate, which involves: a) providing a composition including a lime C source compound and an alumina source compound, the composition including at most 95% lime C and alumina, and at least 23% alumina, by weight relative to the total weight of dry matter of the composition; b) placing the composition provided in step a) in a moisture-saturated environment, at a hydration temperature of between 40° C. and 150° C., so as to precipitate hydrated phases containing at least one aluminium oxide combined with a calcium oxide and with water; and c) subjecting the precipitates obtained in step b) to a baking temperature of between 200° C. and 1300° C., for at least 15 minutes.

A method of preparing a polymer concrete composition includes preparing one or more adhesion promoter pre-coated aggregates, each having a base substrate and an adhesion promoter coating and the adhesion promoter coating being an outermost layer on the base substrate, providing a base composition including an isocyanate component and an isocyanate-reactive component, and mixing the one or more adhesion promoter pre-coated aggregates, the isocyanate component, and the isocyanate-reactive component to form the polymer concrete composition.

The invention relates to a preparation comprising at least one cellulose ether and/or at least one polysaccharide and at least one fatty alcohol, and to the production and use thereof, in particular in construction materials.

A polymer concrete composition has a base composition including a first isocyanate component and a first isocyanate reactive component, and one or more pre-coated aggregates that each has a base substrate and a two-component reaction product polymeric coating on an outer surface of the base substrate. The polymeric coating is the reaction product of a second isocyanate component and a second isocyanate-reactive component.

A method for the refurbishment of porous construction materials and a composition including Portland cement, calcined clay, and optionally aggregate to be used in the method for the refurbishment of porous construction materials. The method includes the steps of mixing water and a composition C, the composition C including, a) 100 mass parts of Portland Cement, b) 1-18 mass parts, preferably 1-10 mass parts, more preferably 1-7.5 mass parts, still more preferably 1-6 mass parts, especially 1-5 mass parts of calcined clay, c) optionally 10-250 mass parts of aggregates, applying the mixture thus obtained to a porous construction material, and optionally hardening the applied mixture.

Disclosed herein are concrete and asphalt crack filler compounds and methods for utilizing them. According to some embodiments, a method of utilizing one of the compounds can include the steps of (1) obtaining a surface crack filler compound, (2) depositing the surface crack filler compound into a surface crack (e.g., concrete, asphalt, etc.), and (3) depositing water onto the surface crack filler compound to cause the surface crack filler compound to solidify and fill the surface crack. Additionally, and according to some embodiments, the method can further include, prior to depositing the surface crack filler compound into the surface crack: removing debris from the surface crack using at least one of a brush, pressurized air, or pressurized water.

A concrete crack repair material based on nano materials includes raw materials as follows: seaweed, sulphoaluminate cement, natural sand, nano-silica fume, calcium formate, fly ash, anhydrous calcium sulphoaluminate, a polyester fiber, a water reducing agent, a corrosion inhibitor and water. By reasonably selecting the raw materials of the concrete crack repair material and making a reasonable ratio of the raw materials, the concrete crack repair material is obtained with excellent performance such as good compressive strength, bending strength and bond strength, and excellent impermeability and frost resistance. The concrete crack repair material can be used for the concrete crack repair in the marine environment, which has very important application values.

A floor patching composition, including: 100 parts of a dry mortar composition including: 9 to 15 parts of quick-setting cement, and 85 to 94 parts of a sole fine aggregate or a combination of two or more fine aggregates, wherein the sole fine aggregate or the combination has an average true density of 2.8 to 4.0 g/cm.sup.3 and a maximum particle size of 1.2 mm or less; 3 to 18 parts of polymer emulsion solid content having a glass transition temperature (Tg) of equal to or higher than −20° C. and equal to or less than 10° C.; and 6 to 18 parts of water.