| Other Abstract | Concrete hollow block is a kind of popular wall materials in the world and a new type of wall materials with most production, fastest growing and used most widespreadly in China. At present, as the market of clay brick is being forced compression, national policies are actively guiding the reform of wall materials.
However, the disadvantages of poor heat insulation performance, crack, and water seepage, etc. have been exposed as the widespread application of concrete hollow block in building construction. Therefore, the blocks with variety of functions have emerged under this circumstance. Shape of concrete hollow block has developed from traditional vertical rectangular single-row hole block to horizontal multi-row holes block, and mixing hole block will also may be a trend of shape development.
Horizontal-hole interlocking concrete hollow block has made up for the inadequacy of vertical hole block, with the advantages of energy saving, land saving, environmental protection, light weight, thermal insulation, anti-crack and anti-seepage, etc. In order to meet the needs of the western green urban construction, this paper proposed load bearing horizontal-hole interlock concrete small hollow block system including BT-240, BH-240 and BH-290 at the basis of the experimental research on self-bearing horizontal-hole interlock concrete small hollow block, then the shape design and experimental study on the basic material performance have been carried on.
Firstly, the preliminary shape and dimension of the load bearing horizontal-hole interlock concrete small hollow block were determined in the consideration of block module requirements, best core ratio, compressive strength, etc. And then the final shape and dimension were determined after the finite element analysis via the ABAQUS software.
Secondly, experiments and analysis were carried on block density, core ratio, percentage of moisture, percentage of water absorption, comparatively percentage of moisture, dry shrinkage, softening coefficient, carbonation coefficient, frost resistance and impermeability, etc. according to the relevant test specifications and technology standards. The experimental results showed that the basic physical properties of load bearing horizontal-hole block conformed to the requirements of the standards, except of application to the dry wall.
Finally, experimental researches on the compressive strength and bending strength of load bearing horizontal-hole interlock concrete small h... |
