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Creep and shrinkage of high-performance lightweight concrete
(AMER CONCRETE INST, 2004)
Two high-performance lightweight concrete (HPLC) mixtures with average compressive strengths of 68.5 and 75.4 MPa (9950 and 10,950 psi) were developed. Their air-dry unit weights were 1875 and 1905 kg/m(3) (117 and 119 ...
Updating concrete drying-shrinkage prediction models for local materials
(AMER CONCRETE INST, 2004)
This paper addresses the need to update existing concrete drying-shrinkage prediction models to reflect local materials. The experimental program was carried out using eight concrete mixtures of similar strength, manufactured ...
High-strength self-curing low-shrinkage concrete for pavement applications
(TAYLOR & FRANCIS LTD, 2010)
High-performance concretes (HPC) that are designed to possess high early strength, self-curing capabilities and low shrinkage may potentially improve rigid pavement performance. A multi-scale experimental programme examined ...
Assessing Lightweight Aggregate Efficiency for Maximizing Internal Curing Performance
(AMER CONCRETE INST, 2011)
Internal curing (IC), which has been extensively investigated in the last decade, has been shown to enhance hydration, diminish autogenous shrinkage, and mitigate early-age cracking due to self-desiccation in high-performance ...
Effectiveness of shrinkage-reducing admixtures on Portland pozzolan cement concrete
(CONSEJO SUPERIOR INVESTIGACIONES CIENTIFICAS-CSIC, 2005)
Drying shrinkage causes tensile stress in restrained concrete members. Since all structural elements are subject to some degree of restraint, (trying shrinkage is regarded to be one of the main causes of concrete cracking.
Concrete Containing Natural Pozzolans: New Challenges for Internal Curing
(ASCE-AMER SOC CIVIL ENGINEERS, 2012)
Natural pozzolans (NP) have proven to be an effective supplementary cementitious material; however, the replacement of ordinary portland cement (OPC) with NP might increase the autogenous and drying shrinkage of concrete. ...
Modeling portland blast-furnace slag cement high-performance concrete
(AMER CONCRETE INST, 2004)
This research focused on portland blast-furnace slag cement high-performance concrete (HPC), with specified 28-day compressive strengths between 60 to 110 MPa. Compressive and flexural strength, elastic modulus, abrasion ...
Application of internal curing for mixtures containing high volumes of fly ash
(ELSEVIER SCI LTD, 2012)
This paper focuses on testing performed on mixtures that would be consistent with the mortar portion of a concrete bridge deck mixture for many state departments of transportation. In this work a relatively large percentage ...
Prestress losses in high performance lightweight concrete pretensioned bridge girders
(PRECAST/PRESTRESSED CONCRETE INST, 2005)
The purpose of this research was to determine the time-dependent behavior of high performance lightweight concrete and to examine how long-term behavior affects the prestress losses in high strength precast, prestressed ...
Effect of internally stored water on creep of high-performance concrete
(AMER CONCRETE INST, 2008)
The effects of internally stored water on long-term deformations of high-performance concrete (HPC) were examined on 130 creep and shrinkage specimens and 750 compressive strength specimens. Creep and shrinkage were monitored ...