PRODUCTION OF EXTRUSION-MOLDED CONSTRUCTION MATERIAL OF HIGH FLEXURAL STRENGTH
PROBLEM TO BE SOLVED: To produce a molded construction material of high flexural strength by mixing and dispersing cement particles and silica fumed particles in marked uniformity to manifest sufficient improvement in strength due to silica fume formulation. SOLUTION: When base materials for the fee...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To produce a molded construction material of high flexural strength by mixing and dispersing cement particles and silica fumed particles in marked uniformity to manifest sufficient improvement in strength due to silica fume formulation. SOLUTION: When base materials for the feedstock of extrusion molding are prepared, at first cement is mixed with silica fume to form a uniform mixture, and aggregate, reinforcing fibers and additives are admixed to this mixture, then, they are kneaded together with water. Thus, cement and silica fume are previously mixed, and they are used in the sufficiently uniformly mixed state to realize high strength as well as lower the aging temperature. The excellent filling effect of silica fume gives densely cured products. Since the cured products have high flexural strength, the molded products can be made thin in wall thickness and light in weight. Moreover, the extrusion-molded construction materials are excellent in frostproof properties because of its denseness and low water absorption. |
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