With the current surge in national economy the industrial traffic has increased many folds in terms of quantity of load and traffic volume.
The concrete-filled glass fiber reinforced gypsum wall panel is a kind of panel that the inside cavums of the glass fiber hollow gypsum panel are filled with concrete, which can be used as the bearing wall of a building.
The influences of eccentricity distance and height to thickness ratio on the bearing capacity of the compression wall panels were studied, and the failure mechanism and bearing capacity of compression wall panels were gained through the experiments of twenty-seven nine groups axial compression wall panel specimens and twenty-seven nine groups eccentric compression wall panel specimens.
The analysis results indicate that the bearing capacity of compression wall panels is obviously affected by the eccentricity distance and height to thickness ratio, and there is a linear relation between bearing capacity and eccentricity distance. The bearing capacity calculation formula of the concrete-filled glass fiber reinforced gypsum wall panel is obtained by regression analysis, which provides reliable gist for structural design of concrete-filled glass fiber reinforced gypsum wall panel buildings.
Diffuse action of air-interlayer structure for blast resistance is analyzed, and it takes on well diffuse effect and economic benefit compare with earth. Based on theory analysis, action and design of air-interlayer and collapse-vibration insulate structure was analyzed, and advise was given, which can provide reference for design.
In order to explore the effect of vibrating mixing technology in industrial production of concrete, the influence of vibrating mixing and common forced mixing on the mixing quality and efficiency were comparatively investigated by field tests of concrete mixing plant.
The vibrating mixing scheme was achieved by adopting mixing shaft and blades as vibrating source based on conventional twin-shaft mixer.
The field tests included mixing time test and reducing cement test. The experimental results show that under different mixing time, the freshly mixed concrete by both mixing methods have similar uniformity but the hardened concrete have distinctive compression strength; comparing with common forced mixing, vibrating mixing makes the materials in vibrating status to destroy their sticky connection and distribute cement particles, so both 7d and 28d compression strength are significantly improved and the mixing time is reduced; with the cement reduction, the compression strength of concrete by both mixing methods decrease, but comparing with common forced mixing, vibrating mixing can save cement under the condition of ensuring necessary concrete strength due to its improved cement utilization.
Different cement types were used to stabilize coastal soft soil. The results showed that the higher strength degree cement lead to the higher unconfined compression strength with same cement addition after curing 90 days.
An empirical correlation between unconfined compressive strength and curing time was presented to forecast the unconfined compression strength of cement-soil. Additionally, the 14 day and the data of unconfined compressive strength at that time were suggested to use as the basic standard time and standard strength data respectively.
In addition, the glass transition temperature Tg of the new type of SBR can be tunable to the suitable temperature region according to the application requirements. In this paper, we put the emphasis on the synthesis and properties characterization of this new type material, and try to provide a new method to fabricate a viscoelastic damping material VDM with tunable Tg and excellent dynamic mechanical properties usable for applications in the field of vibration reduction industry.Experimental study on shear behaviour of recycled concrete hollow block masonry J.
Zhang3 and G. Bai1 To study the shear behavior of recycled concrete block .
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research. This paper investigates the performance of pure high density polyethylene (p-HDPE) and recycled high density polyethylene (r-HDPE) by comparing the tensile strength of both materials.
The comparison of the present experimental results with those reported in literature for hardened concrete with either RCA or RBA demonstrates the effectiveness in improving the compressive strength by using the optimal gradation of recycled aggregates.
modulus of rupture of conventional concrete and recycled aggregate concrete made with coarse recycled aggregate and natural sand;(- ). Katz  concluded in his work that the ratio of the flexural and the splitting strengths to the compressive strength is in the range of 16–23% and 9–13%, respectively.
|Experimental Research on Shear Strength of Recycled Concrete Block Masonry||With the current surge in national economy the industrial traffic has increased many folds in terms of quantity of load and traffic volume.|
This paper presents the test results of 6 reinforced concrete beams with recycled aggregates of construction waste under flexure, the beams were made of two strength grade concrete of C30 and C40 and with different recycled aggregate replacement rate of 0%, 50% and 70%.