Construction and demolition waste generation and properties of recycled aggregate concrete: A global perspective

Recent durability studies on concrete structure

Applications of using nano material in concrete: A review

Thank you very much for reading design of concrete structures. Maybe you have knowledge that, people have search hundreds times for their favorite novels like this design of concrete structures, but end up in harmful downloads. Rather than enjoying a good book with a cup of tea in the afternoon, instead they cope with some infectious bugs inside their desktop computer. design of concrete structures is available in our digital library an online access to it is set as public so you can download it instantly. Our digital library saves in multiple countries, allowing you to get the most less latency time to download any of our books like this one. Merely said, the design of concrete structures is universally compatible with any devices to read.

Design Of Concrete Structures

Fresh and hardened properties of self-compacting concrete containing metakaolin

Metakaolin (MK) is a valuable admixture for concrete/cement applications that can enhance the performance of cementitious composites through high pozzolanic reactivity, much like silica fume (SF). While SF concrete is characterized by superior mechanical and durability performance, concrete containing MK achieves comparable properties at a lower price and with better workability. The objective of this study is to investigate the effect of cement replacement by MK on the durability of self-consolidating concrete (SCC); the effect of SF at similar levels of MK replacement has also been included for comparison. The durability performance of SCC was evaluated based on the results of drying shrinkage, freezing and thawing, salt scaling, and rapid chloride permeability tests. The results of these tests indicate that highly durable SCC mixtures can be produced using a high MK content with an optimum percentage of around 20%. The results also show that the durability of SCC, especially with high MK content, is higher than that of SCC containing SF.

Effect of metakaolin and silica fume on the durability of self-consolidating concrete

The combined effect of crumb rubber and synthetic fibers on impact resistance of self-consolidating concrete

An experimental investigation was conducted to study the shear strength and cracking behavior of full-scale beams made with self-consolidating concrete (SCC) as well as normal concrete (NC). A total of 20 flexurally reinforced concrete beams, with no shear reinforcement, were tested under mid-span concentrated load until shear failure occurred. The experimental test parameters included concrete type/coarse aggregate content, beam depth and the longitudinal reinforcing steel ratio. The beam depth ranged from 150 to 750 mm while the shear span-to-depth ratio (a/d) was kept constant in all beams. The two longitudinal reinforcing steel ratios used were 1% and 2%. The performance of SCC/NC beams was evaluated based on the results of crack pattern, crack widths, loads at the first flexure/diagonal cracking, ultimate shear resistance, and failure modes. The ultimate shear strength of SCC beams was found to be slightly lower than that of NC beams and the difference was more pronounced with the reduction of longitudinal steel reinforcement and with the increase of beam depth. The performance of code based equations in predicting the shear resistance of SCC/NC beams is also presented. The recommendations of this paper can be of special interest to designers considering the use of SCC in structural applications.

Behavior of full-scale self-consolidating concrete beams in shear

Use of metakaolin on enhancing the mechanical properties of self-consolidating concrete containing high percentages of crumb rubber

This study evaluates the impact resistance and mechanical properties of a number of developed self-consolidating rubberized concrete (SCRC) mixtures reinforced with steel fibers (SFs). In this research, SFs were used to compensate for the reduction in tensile and flexural strength that resulted from adding high volumes of crumb rubber (CR). SFs were also used to exploit the beneficial interaction between SFs and CR to develop low-density concrete with higher impact resistance. The experimental variables were different replacement levels of fine aggregate volume by CR (0–40%), binder content (550–600  kg/m3), SF volume fractions (0, 0.35, 0.5, 0.75, and 1%), and size of SFs. Tests included fresh properties, compressive strength, splitting tensile strength (STS), flexural strength (FS), and impact loading (drop-weight on cylindrical specimens and flexural impact loading on small-scale beams). The results indicated that adding CR to concrete improved the impact energy absorption and ductility, wherea...

Assem A. A. Hassan

Papers

Effect of metakaolin and silica fume on the durability of self-consolidating concrete

The combined effect of crumb rubber and synthetic fibers on impact resistance of self-consolidating concrete

Behavior of full-scale self-consolidating concrete beams in shear

Use of metakaolin on enhancing the mechanical properties of self-consolidating concrete containing high percentages of crumb rubber

Impact Resistance and Mechanical Properties of Self-Consolidating Rubberized Concrete Reinforced with Steel Fibers