摘要:
The present invention provides a concrete protective agent including an alkali metal-containing silicate and an alkaline electrolyzed water. Alternatively, the present invention provides a concrete protective agent including an alkali metal-containing silicate and silicon dioxide. Examples of the alkali metal-containing silicate include sodium silicate, potassium silicate and lithium silicate. By supplying the concrete protective agent to a concrete structure, the repair of the concrete structure can be performed. Thus, the present invention provides a concrete repairing agent having a significant repairing effect as compared with conventional concrete repairing agents.
摘要:
The invention provides a set gypsum-containing product having increased resistance to permanent deformation and a method for preparing it comprising forming a mixture of a calcium sulfate material, water, and an appropriate amount of one or more enhancing materials chosen from condensed phosphoric acids, each of which comprises 2 or more phosphoric acid units; and salts or ions of condensed phosphates each of which comprises 2 or more phosphate units. The mixture is then maintained under conditions sufficient for the calcium sulfate material to form a set gypsum material.
摘要:
A process of preparing a concrete mixture includes the following steps: (a) providing a nano-sized non-sand silica and water; (b) mixing the non-sand silica with the water to form a silica-water mixture; (c) mixing an acid into the silica-water mixture to form a treated water; (d) mixing Portland cement and the treated water for a time sufficient to wet the Portland cement with the treated water to form a Portland/treated-water mixture; (e) mixing aggregate and the Portland-treated-water mixture to form an uncured concrete; and (f) allowing the uncured concrete to cure to form a cured concrete.
摘要:
The present invention provides a concrete protective agent including an alkali metal-containing silicate and an alkaline electrolyzed water. Alternatively, the present invention provides a concrete protective agent including an alkali metal-containing silicate and silicon dioxide. Examples of the alkali metal-containing silicate include sodium silicate, potassium silicate and lithium silicate. By supplying the concrete protective agent to a concrete structure, the repair of the concrete structure can be performed. Thus, the present invention provides a concrete repairing agent having a significant repairing effect as compared with conventional concrete repairing agents.
摘要:
The invention provides a set gypsum-containing product having increased resistance to permanent deformation and a method for preparing it comprising forming a mixture of a calcium sulfate material, water, and an appropriate amount of one or more enhancing materials chosen from condensed phosphoric acids, each of which comprises 2 or more phosphoric acid units; and salts or ions of condensed phosphates each of which comprises 2 or more phosphate units. The mixture is then maintained under conditions sufficient for the calcium sulfate material to form a set gypsum material.
摘要:
Magnesium phosphate cement binder systems and method for providing magnesium phosphate cements are described. In an embodiment, a magnesium phosphate cement binder system may include magnesium oxide that has been calcined at a temperature of between about 900° F. to about 1800° F. The magnesium phosphate cement binder system may also include a phosphate material. Other formulations, compositions, and methods are also described.
摘要:
The invention provides a set gypsum-containing product having increased resistance to permanent deformation and a method for preparing it comprising forming a mixture of a calcium sulfate material, water, and an appropriate amount of one or more enhancing materials chosen from condensed phosphoric acids, each of which comprises 2 or more phosphoric acid units; and salts or ions of condensed phosphates each of which comprises 2 or more phosphate units. The mixture is then maintained under conditions sufficient for the calcium sulfate material to form a set gypsum material.
摘要:
Die Erfindung betrifft ein Verfahren zum Trocken- oder Feuchtspritzen von Spritzbeton, wobei Zement und Anmachwasser einer Spritzdüse zugeführt und gemischt werden und der entstehende Spritzbeton verspritzt wird, wobei dem Anmachwasser Kohlendioxid zugesetzt wird und der Druck des Anmachwassers stromaufwärts der Spritzdüse mittels einer Hochdruckpumpe auf einen Enddruck erhöht wird. Erfindungsgemäß wird der Druck des Anmachwassers zunächst auf einen Zwischendruck erhöht wird, dann dem Anmachwasser das Kohlendioxid zugesetzt wird und schließlich der Druck des Anmachwassers auf den Enddruck erhöht wird.
摘要:
Die Erfindung betrifft ein Verfahren zum Trocken- oder Feuchtspritzen von zementhaltigen Stoffen, insbesondere Spritzbeton, wobei Zement und Anmachwasser einer Spritzdüse zugeführt und gemischt werden und der entstehende Spritzbeton verspritzt wird, wobei dem Anmachwasser Kohlendioxid zugesetzt wird und der Druck des Anmachwässers stromaufwärts der Spritzdüse mittels einer Pumpe erhöht wird. Erfindungsgemäß wird die Menge des dem Anmachwasser pro Zeiteinheit zugesetzten Kohlendioxids in Abhängigkeit von Temperatur, Druck und / oder Menge des der Spritzdüse pro Zeiteinheit zugeführten Anmachwassers geregelt wird.