High-porosity magnesia phosphate paste (HPMPP) was prepared via the pre-foaming method. In the pre-foaming method, sintering treatment was not required. The bulk density and maximum compressive strength of the HPMPP prepared according to the ratio of water to solids (W/So) of 0.32 reached 464.00 ± 5.00 Kg/m(3) and 0.30 ± 0.05 MPa, respectively. The compressive strength increased with the increa...

In order to study the mechanical and damage behavior of concrete shield tunnel segments under a high temperature, two self-compacting three mixed-fiber (steel polypropylene fiber) test blocks were designed. The influence several key factors, including fire duration, pre-loading, type, on studied. results show that type fiber pre-loading have an important crack development in segments. Compared ...

in this paper the traditional covering plaster of masonry buildings is supplied with polypropylene and steel fiber to enhance their seismic behavior. the plaster mix proportion is determined by some initial mortar tests. also, one story, single span masonry building specimen plastered with different mortars is tested on a shaking table 8 times under a seismic input and the performance of the sp...

This study presents the experimental results about effects of Polyvinyl-alcohol (PVA) and Polypropylene (PP) fibers on fresh mechanical properties including compressive, splitting tensile strength, modulus rupture (MOR) as well toughness hybrid fiber reinforced self-compacting concrete (SCC). PVA PP were added into SCC mixtures having only macro steel also binary hybridization both micro fiber....

The incorporation of reinforcements is a necessity to compensate for the deficiency that concrete presents with its fragile behavior and low deformation capacity. One solutions improve tensile performance addition fiber in random distributions throughout volume. However, this strategy can compromise compressive strength concrete; consequently, purpose study was analyze conventional hybrid reinf...

The addition of short steel wire, polypropylene, basalt and other fibers can improve the durability index concrete, such as compression resistance, cracking resistance carbonization which has been widely recognized in industry. For fiber most current researches are qualitative, quantitative value various needs to be further investigated. In view this, linear fitting polynomial were introduced i...