Use of Rise Husk Ash in Concrete.
Optimal seismic performance-based design of reinforced concrete buildings using nonlinear pushover analysis.
Behavior of Reinforced concrete columns.
The importance of concrete in modern society cannot be overestimated. Look around you and you will find concrete structures everywhere such as buildings, roads, bridges, and dams. There is no escaping the impact concrete makes on your everyday life. Concrete is prepared by mixing cement, water, and aggregate together to make a workable paste. It is molded or placed as desired, consolidated, and then left to harden. Adding gypsum, CaSO4, to Portland cement prolongs the hardening. The most important compounds present in cement are: 3CaO•Al2O3, tricalcium aluminate; 3CaO•SiO3, tricalcium silicate; 2CaO•SiO3, dicalcium silicate; and CaO, calcium oxide. The 2CaO•SiO3 reacts slowly with water to yield Ca(OH)2 and H2SiO3. This reaction not only helps in holding the material together, but also makes the concrete less pervious to water.
In 2005, a storm caused extensive damage in 17 different sites along a10-mile stretch of the highway, from Islip Saddle (002 LA 64.121) to Wrightwood(002 SBD 1.248). After the section of highway was closed, another storm in 2006battered the road and delayed repair efforts. The repaired section opened inMay 2009. The entire repair project cost $10.5 million and was funded by theFederal Highway Administration's Emergency Relief Program. The project requiredthe construction of a $2.6 million concrete bridge, which is designed forrockslides to flow beneath. Constructing the bridge was "unusually difficult"according to Caltrans; it is the third largest bridge of its kind in the world,and was built along a 75% mountain slope.
(1963) Effects of Aggregate Grading on the Strength of Concrete.
In March2016, it was reported that the I-8 Update Project (between Route andArizona State Line) began in February 2016 and will end in December 2017 (firstof five phases is just outside of Holtville). It will replace 48 miles ofmostly original concrete lanes with new Continuously Reinforced ConcretePavement (CRCP) lanes and shoulders that is expected to last for the next 75years at a cost of $417.7 million. For more information: .
This paper presents the elastic seismic response of reinforced concrete frames with reinforced concrete bracing member in K or inverted – A or V – braced pattern which are analyzed numerically for twelve storey building with 5-bay structures.
Journal of American Concrete Institute (ACI) 60, pp.
In September 2011, it was reported that the pavement rehabilitation nearStockton is taking an interesting approach. This approach, known as"continuously reinforced concrete pavement", is made from concrete reinforcedwith steel and is estimated to last 40 years. Concrete roads in the state aremore commonly built with breaks - called joints - that help keep the surfacefrom cracking as the concrete changes shape. Using reinforcing steel makes thisproject different.
Gary Richards (Mr. Roadshow) reported that Caltrans will begin replacing therough concrete with rubberized asphalt in late 2010 from Castaic to the VisaDel Lago Road overcrossing, a yearlong project. In 2014 the state will repaveI-5 from San Fernando Road to Lake Hughes Road
Microstructural viscoplastic continuum model for asphalt concrete.
Phd Thesis On Concrete Slabs - …
As a solution for these social and technical requirements, the concrete of SCC was proposed by Prof.
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Concept of key point, nodes, meshing and separate elements was used to model the concrete and the reinforcement.
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(1960) Design Criteria for Reinforced Concrete Columns under Axial load and Bi-axial Bending, ACI, Proc.
Paper on military spending : Phd thesis on concrete slabs
Alyaa Al-Attar , Saad Mahmoud Raouf, Determination of Mechanical Properties of Hybrid Steel-Nylon Fibre Reinforcement concrete, Journal of Modern Applied Sciences, Vol.4, o12, pg 77-108, December 2010.
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Consequently, it was concluded that the strength of concrete depends greatly on the internal structure, surface nature and shape of aggregates.
Key words: aggregates, concrete, compressive strength, granite, gravel, curing.
 Bloem, D.L.
(1996), Strengthening of concrete by lateral confinement, PhD Thesis.
The 28 day strengths of the concretes made with crushed granite, washed gravel, and unwashed gravel were 25.1 N/mm2, 20.0 N/mm2, and 16.9 N/mm2 respectively.
30/03/2012 · ABSTRACT
Twelve concrete cubes (150mm x 150mm x 150mm) were cast for each coarse aggregate type of which four were crushed at each maturity age namely; 7, 14, 21, and 28 days.
TUNNELLING AND TRENCHLESS TECHNOLOGY Pipejacking and pipebursting
In May 2017, it was reported that Caltrans said itwill close westbound I-8 ramps at Algodones Road/Route beginning in earlyMay 2017 due to ongoing construction. Signs will be in place to alert motoriststo the ramp closures and alternate routes. The closures and detours will be inplace through August. These closures are part of a major pavementrehabilitation project consisting of five segments that will constructContinuously Reinforced Concrete Pavement (CRCP) over 48 miles on I-8 inImperial County. The work will result in a long-lasting superior roadway,capable of withstanding the heaviest traffic loads. Construction began in 2016on three of the five segments. The remaining two segments will begin work in2017. Work will be completed by 2019.
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Kumar (2007), "Strength Studies On Glass Fibre Reinforced Recycled Aggregate Concrete", Asian Journal Of Civil Engineering of Building And Housing, Vol-No.
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