Rapid curing, high strength cementitious binder mixtures are provided containing fly ash and an alkali silicate binder that has a weight ratio of SiO2:M2O of about 0.20:1 to about 0.75:1 wherein M is selected from the group consisting of Li, Na, K, Ca and Mg. The cementitious binder mixtures can be mixed with aggregates to provide mortar and concrete mixtures. Any of the binder, mortar and concrete mixtures can be cured under elevated temperatures to yield high strenght products.

Fly ash cementitious material and method of making a product

A process is disclosed for colouring building materials with inorganic pigments in the form of microgranulates The granulates comprise one or more pigments and one or more compounds selected from boron, aluminum, silicon, titanium, zinc and tim

Process for colouring building materials

The present invention provides a process for the preparation of tailored precursor materials in a solid powder form, useful for geopolymeric system containing pentavalent silicon complexes in a solid powder form. The raw materials used are fly ash, sodium hydroxide, and rice husk with and without sodium silicate. The tailored precursors so obtained in solid powder need only water at site, instead of highly alkaline solution for obtaining the cementitious geopolymeric materials.

Novel process for the preparation of geopolymeric functional materials in a solid form

The invention is characterised by mixing cement thoroughly with a microfill agent and possibly also a water reducing agent to obtain a highly-reactive and dry cement mixture; blending the cement mixture with at least one of the materials soil, clay or stone and possibly also water; spreading the blend on the ground (3, 8) to a thickness of at least 15-30 centimetres; causing the blend (4, 9) that is spread out on the ground to contain sufficient cement mixture so that after compaction said blend will have a compressive strength of at least 5 MPa after 28 days; and laying a roadbed (5, 10) on the blend (4, 9) subsequent to said blend having cured.

A method of stabilising the ground in road construction work

A method for making a regenerated soil material for the production of a structural unit includes the steps of: a) obtaining a raw soil material containing aluminum and silicon from a natural source; b) adding an active mineral containing aluminum and silicon to the raw soil material; c) cleaving the raw soil material and the active mineral in a base so as to dissociate aluminum monomer and silicon monomer out of the mixture of the raw soil material and the active mineral; and d) polymerizing the aluminum monomer and the silicon monomer so as to form silicon-oxy tetrahedron and aluminum-oxy tetrahedron in the mixture.

Method for making regenerated soil material for the production of a structural unit, the structural unit made from the regenerated soil material, and method for recycling the structural unit

A process for the production of construction material comprising the steps of: 1 heating soil to a temperature sufficient to destroy substantially the property of the soil to swell with changing levels of moisture without causing any of the soil constituents to melt, which temperature will normally lie between 500° and 750° C depending upon the soil type, 2 adding to the soil, either before or after the heating step, iron oxide in a finely divided form, to form a mixture and 3 introducing into, or creating within, the mixture a solution of sodium silicate, such as by adding an aqueous solution of sodium silicate to the mixture or by adding to the mixture a strong solution of sodium hydroxide and a silica source The construction material formed by the process, and articles formed thereform, form part of the invention The construction material could be used for the production of articles such as bricks or tiles or for the formation of massive structures such as building foundations or road bases

Nam Lim

Papers

Construction of building materials