CHEMICALLY- BONDED BRICK PRODUCTION BASED ON BURNT CLAY BY MEANS OF SEMIDRY PRESSING

Abstract

We presented a study on the possibility of using the burned rocks of the Krasnoyarsk Territory for production chemically- bonded materials in the form of bricks, so widely used in multistory housing and private house building. The radiographic analysis of the composition of burnt rock was conducted and a modifier to adjust the composition uniformity was identified. The mixing moisture content was identified and optimal amount at 13-15% was determined. The method of semidry pressing has been chosen. The process of obtaining moldings has been theoretically proved, the advantages of chemically- bonded wall materials compared to ceramic brick were shown. The production of efficient artificial stone based on material burnt rocks, which is comparable with conventionally effective ceramic materials or effective with cell tile was proved, the density of the burnt clay - based cell tile makes up 1630-1785 kg \ m3, with compressive strength of 13,6-20,0 MPa depending on the compression ratio and cement consumption, frost resistance index is F50, and the thermal conductivity in the masonry is λ = 0,459-0,546 W \ m * 0C. The clear geometric dimensions of pressed products allow the use of the chemically- bonded brick based on burnt clay as a facing brick.