Cement-bound brick producing method for construction of house, involves producing mixture consisting of particles, hydraulically hardened cement and volume of water, pressing mixture into mold, and hardening pressed mixture

• Main Authors: LAU, JENS-JUERGEN, KROPP, JOERG, HLAWATSCH, FRANK
• Format: Patent
• Language: English; German
• Published: 10.06.2009
• Subjects: ARTIFICIAL STONE; BUILDING; BUILDING MATERIALS; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; FIXED CONSTRUCTIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; REFRACTORIES; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; SLAG; STRUCTURAL ELEMENTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; TREATMENT OF NATURAL STONE; WORKING CEMENT, CLAY, OR STONE

The method involves producing a mixture consisting of particles with porous calcium-silicate-hydrate-matrix, hydraulically hardened cement and a volume of water that is adequate for saturation of suction capacity of the particles and for hydration of the cement. The mixture is pressed into a mold under a pressure of 3 to 25 Newton/millimeter square, and the pressed mixture is allowed to harden, where the mixture exhibits an effective water-cement-ratio of 0.35 to 0.60. The mixture is exposed with a vibration of 30 to 200 hertz during pressing. An independent claim is also included for a cement-bound brick with a microstructure of particles bound in a hydraulically hardened cement matrix. Die Erfindung betrifft einen zementgebundenen Formstein und ein Verfahren zu dessen Herstellung. Der zementgebundene Formstein weist ein spezifisches Gewicht bzw. eine Rohdichte von 1,0 bis 1,4 kg/dm3 auf und kann damit als Leichtstein bezeichnet werden; die Druckfestigkeit kann bei 5 bis 20 N/mm2 liegen, was zur Verwendung als Baustein für tragende Wände im Hausbau ausreicht. Der erfindungsgemäße Formstein zeichnet sich dadurch aus, dass er aus rezykliertem Porenbeton in einer Zementmatrix bestehen kann.