The Research Of Lightweight Sintered Shale Brick And Analysis Of The Basic Mechanical Properties Of The Masonry

In China, we prohibit using the clay bricks in buildings. The subject use the shale asbasic ingredients. Adds some organic matters and auxiliary chemical reagents in a certainproportion on the basis of the shale bricks. Then we have developed a newenvironmentally kind of wall materials–the lightweight sintered shale brick. It has somegood characteristics, such as light weight, high strength, heat preservation, thermalinsulation, fire protection, anti-cracking and so on.Through analysis the particle size grade of shale, the kind of flammable materials oforganic matters and its grade. This issue gives the perfect ratio, which will make thebrick could be used in high-rise buildings as the wall, on the basis of a large number oftests. Give a special sintering process of the lightweight sintered shale brick. At the sametime, through analysis the physical and chemical of raw shale and the sintering process,then assist with the mechanical properties test, elaborate the lime burst and sinteredtemperature impacts on the strength of lightweight sintered shale brick.The subject has designed the compressive test, the shear test along the through seam,the bending tensile test along the through seam and tooth seam for the brick, according tothe basic mechanical properties test method standards of the masonry and thecharacteristics of the brick. Through the tests gets a lot of data, including the modulus ofelasticity of the masonry, the ultimate compressive capacity, the shear ultimate capacity,and the bending tensile ultimate capacity. Compare these data with the results calculatedby Code for design of masonry structures, could be found that the average of many kindsof capacity could be estimated by formula of the masonry structure design specificationand has a certain safety margin. But the average of bending tensile strength along thelong seam should be multiplied by a certain reduction factor.The subject designs anti-anchor test and hanging test of masonry of lightweightsintered shale brick, according to Light weight for partition walls used in buildings andTechnical specification for post-installed fastenings in concrete structures. The data ofdesigns anti-anchor test shows that masonry of lightweight sintered shale brick hasexcellent performance on anchorage. In view of the characteristic of the brick and thesafety factors, it is recommended that the diameter of the expansion bolts should be notless than Φ10, and the anchoring depth should not less than70mm in the actualconstruction. The data of hanging capacity test shows that the masonry can withstand600KN load at100mm from the wall. It is able to meet the needs of the seconddecoration of the building.