美国混凝土协会期刊
期刊
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作者:Christopher R. Shearer , Kimberly E. Kurtis
来源:[J].Materials Journal, 2015, Vol.112 (2)ACI
摘要:In this study, biomass and co-fired fly ashes are examined for use as supplementary cementitious materials. These ash sources are not addressed in the current American standard for fly ash and natural pozzolan use in concrete (ASTM C618-12a). The influence of these ashes on early...
作者:Amir Hajibabaee , M. Tyler Ley
来源:[J].Materials Journal(IF 0.826), 2015, Vol.112 (1)ACI
摘要:Paste beams with different water-cementitious material ratios (w/cm) were cured for different durations with wet and sealed curing methods, and then the impact on curling was observed. The results show that the samples that were cured showed greater curling deflection and these e...
作者:Afshin Noori , Mohammad Shekarchi , Masoud Moradian ...
来源:[J].Materials Journal(IF 0.826), 2015, Vol.112 (1)ACI
摘要:This paper presents a study on the behavior of a steel fiber-reinforced cementitious mortar (SFRCM) in a triaxial compression condition and a comparison of results with those of a common high-performance concrete (HPC). SFRCM with a high compressive strength seems to be a promisi...
作者:Nguyen Tien Dung , Ta-Peng Chang , Chun-Tao Chen
来源:[J].Materials Journal, 2015, Vol.112 (1)ACI
摘要:The performance of a novel concrete made with an eco-binder, referred to as SCA binder, that only contains raw slag (S) and raw circulating fluidized bed combustion (CFBC) fly ash (CA) without ordinary portland cement was evaluated. The major hydration products of SCA binders are...
作者:Joseph J. Assaad , Yehia Daou , Jacques Harb
来源:[J].Materials Journal, 2015, Vol.112 (2)ACI
摘要:The injection of cementitious grouts by vacuum techniquesis increasingly used in repair and new construction of posttensioning members. A research program was undertaken to assess the effect of thixotropy on water retention and behavior of grouts placed using such techniques. Tes...
作者:Qiwei Cao Nowasell , John T. Kevern
来源:[J].Materials Journal, 2015, Vol.112 (1)ACI
摘要:This paper presents results from a preliminary study that investigated the potential of using drinking water treatment waste sludge as an internal curing agent for concrete. The concept consists of using the high water content, primarily calcium carbonate material, as a conc...
作者:Mohammad T. Ghasr , Yann Le Pape , David B. Scott ...
来源:[J].Materials Journal(IF 0.826), 2015, Vol.112 (1)ACI
摘要:Corrosion assessment of embedded steel in concrete structures is generally performed by electrochemical methods that are not fully nondestructive because the device requires connection to the steel. For practical applications, the development of a truly nondestructive technique f...
作者:Akthem Al-Manaseer , Arm , o Prado
来源:[J].Materials Journal(IF 0.826), 2015, Vol.112 (1)ACI
摘要:Six shrinkage and creep compliance models were evaluated according to the NU-ITI and RILEM databases. The prediction models include ACI 209R-92, B3, GL 2000, CEB MC 90-99, fib MC 2010, and AASHTO 2012. Five statistical methods were used to evaluate the models. The statistica...
作者:Shuang Lu , D. D. L. Chung
来源:[J].Materials Journal(IF 0.826), 2015, Vol.112 (1)ACI
摘要:The viscoelastic behavior of silica fume (with and without silane treatment) without a binder is evaluated under dynamic smallstrain compression. The loss-tangent/solid-content, storagemodulus/solid-content, and loss-modulus/solid-content describe the solid part of the compa...
作者:P. F. de J. Cano-Barrita , F. Castellanos , S. Ram�rez-Arellanes ...
来源:[J].Materials Journal(IF 0.826), 2015, Vol.112 (1)ACI
摘要:The relationship between T1 and T2 nuclear magnetic resonance relaxation times and compressive strength of concrete is determinedand compared with those obtained using ultrasonic pulse velocity and rebound hammer. Concrete cylinders measuring 150 mm (6 in.) in diameter and 300 mm...

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