Study on cement based composite board of wire mesh and straw fibers in severe cold area of Northeast China

Abstract There is a large amount of residual straw fibers resources in Northeast China. Rice straw fibers was chosen to make steel-wire-net mortar roof-board composed of straw fibers in different sizes. Cold-drawn and low-carbon steel-wire-nets, whose diameter was 3mm and whose size of mesh opening was 60mm×60mm ,were set on both upper and lower sides. Vertical tied cold-drawn low-carbon wires were set between the upper and lower cold-drawn and low-carbon steel-wire-lath for spot welding. The distance between two vertical tied steel wires was 120mm. After the mortar was squirted on the steel-wire-nets, outbound alkali resistance fiber glass mesh and thin floated finish make the alkali resistance fiber glass mesh and thin plastering mortar and horizontal wire mesh mortar and compressed straw fibers slab straw fibersboard work together. The deformation characteristics that studies roof-board composed of straw fibers boards; the fracture distribution and the feature of crack developing that studies the boards; the strain distribution and its change law were summarized, the loading mechanism of roof-board composed of straw fibers boards had been studied; by observing the failure form and destruction feature of test specimen, the factors affecting the flexural property of roof-board composed of straw fibers boards had been studied, preparation points of roof-board composed of straw fibers boards had been put forward. The advantages of grass steel-wire-net thin plastering roof-board composed of straw fibers boards reside in cheap materials, moderate carrying capacity and it was easy to be applied.