美国混凝土协会期刊
期刊
会议
图书
作者:Pierre-Claude Aitcin , William Wilson
来源:[J].Concrete International, 2015, Vol.37 (1)ACI
摘要:Due to the development of powerful high-range water-reducing admixtures and viscosity modifying admixtures, it is now possible to very efficiently and economically build high-rise concrete structures. These admixtures allow concrete to be pumped from the first to the highest floo...
作者:John N. Hardisty , Enrique Villalobos , Brian P. Richter ...
来源:[J].Concrete International, 2015, Vol.37 (1)ACI
摘要:Lap splices are not used near critical sections of frames that are required to resist earthquakes' demands because they are believed to limit frame toughness. The current building code nevertheless allows lap splices at the bases of structural walls, where large inelastic deforma...
作者:Luke M. Snell
来源:[J].Concrete International, 2015, Vol.37 (1)ACI
摘要:Handheld infrared (IR) thermometers have been found to work well in the relatively narrow temperature range commonly seen in concrete construction: 0 to 120�F (-20 to -45�C). Although IR thermometers are not sufficiently accurate for some quality assurance tests, th...
作者:Bruce Suprenant
来源:[J].Concrete International, 2015, Vol.37 (1)ACI
摘要:Q: Are vapor retarders required for a slab-on-ground? Also, what are the durability requirements for a slab-on-ground?
作者:Clinton L. Powell , Bob Schieffer
来源:[J].Concrete International, 2015, Vol.37 (2)ACI
摘要:The Glen Elder Dam, completed in 1968, is located at the confluence of the North and South Forks of the Solomon River in north-central Kansas, near Glen Elder, KS. The Fort Randall Dam, completed in 1952, is located on the Missouri River in southeast South Dakota, near Pickstown....
作者:Edward B. Finkel
来源:[J].Concrete International, 2015, Vol.37 (2)ACI
摘要:To meet the demands of Internet retailing, landlords holding expiring leases on vintage low-rise buildings are exploring the feasibility of raising the roofs of these buildings to clear heights upwards of 45 ft (13.5 m). What comes next is an evaluation of an existing conventiona...
作者:Tagnit-Hamou , A. , Soliman ...
来源:[J].Concrete International, 2015, Vol.37 (3)ACI
摘要:Ultra-high-performance glass concrete (UHPGC) developed at the University of Sherbrooke, Sherbrooke, QC, Canada, was used in the construction of two new pedestrian bridges on the university campus. The bridges were designed to meet the university�s architectural and struct...
作者:Seegebrecht , G.
来源:[J].Concrete International, 2015, Vol.37 (3)ACI
摘要:While pervious concrete has received much attention as a pavement material, it has been also used in the past to construct walls like the ones at Rosehill Cemetery, in Chicago, IL. Over the past 18 years, the author made periodic observations of the condition of these walls. Alth...
作者:Sakai , K. , Buffenbarger ...
来源:[J].Concrete International, 2015, Vol.37 (3)ACI
摘要:The ACI Concrete Sustainability Forum VII took place in Washington, DC, on October 29, 2014, at the ACI Fall Convention. The forum comprised four parts: presentations on Concrete Sustainability Forum history and lessons, a panel discussion, a luncheon lecture, and a tour of ...
作者:Kozikowski , R.L. , Suprenant ...
来源:[J].Concrete International, 2015, Vol.37 (3)ACI
摘要:Mass concrete placements are conducted using thermal control plans that provide limits on maximum concrete temperature as well as maximum temperature differential. While the maximum temperature is limited to avoid damage due to delayed ettringite formation, temperature differenti...

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