Vermiculite board for novel building material


A novel building material was made from unfired vermiculite, Ca(OH)2, SiO2 and pulp by autoclaving at 187 C.  The vermiculite crystals were dispersed uniformly in a definite direction in a calcium silicate matrix. The phase composition, plastic deformation in bending, moisture adsorption and desorption, and formaldehyde adsorption capacity of the material are discussed.  Humidity control of  the vermiculite board was evaluated in an experimental house  with thermally insulated air-tight construction.  6 refs.

Primary author(s): Akao M; Yamazaki A; Fukuda Y

                            Tokyo,Medical & Dental University; Waseda,University; Mitsubishi Materials Corp.

Source: J.Mat.Sci.Lett.


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