Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Ramon L. Carrasquillo"'
Autor:
Ramon L. Carrasquillo, David Rothstein
Publikováno v:
Forensic Engineering 2018.
Publikováno v:
Transportation Research Record: Journal of the Transportation Research Board. 1757:157-165
Identifying the susceptibility of an aggregate to the alkali-silica reaction (ASR) before using it in concrete is one of the most efficient practices for preventing damage. ASTM C 1260 (Mortar-Bar Test) and ASTM C 1293 (Concrete-Prism Test) have been
Autor:
Ramon L. Carrasquillo, John J. Myers
Publikováno v:
Transportation Research Record: Journal of the Transportation Research Board. 1696:131-142
Concrete technology has continued to advance throughout the years to meet the demands of designers and innovative structural systems. With the advent of high-performance concrete (HPC), which contains large amounts of cementitious materials, the inve
Publikováno v:
PCI Journal. 43:62-71
The decision of whether to repair or replace a damaged prestressed concrete bridge girder can be very difficult when a reliable estimate of prestress remaining in the strands is not available. A prototype instrument has been developed to estimate str
Publikováno v:
Transportation Research Record: Journal of the Transportation Research Board. 1624:132-139
High-performance concrete (HPC) bridges can be cost-effective both initially and in the long term, provided the design and construction optimize the improved performance characteristics of HPC. Using the high-strength characteristic of HPC can reduce
The use of abrasive blasting to remove lead-based paint from steel bridges produces contaminated spent blasting abrasives that may be classified as hazardous by the Environmental Protection Agency. If the spent abrasives leach lead, chromium, and cad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3df86b0cd300104cee9b843c59c4850a
https://doi.org/10.1520/stp14135s
https://doi.org/10.1520/stp14135s
Autor:
Ramon L. Carrasquillo, Reed B. Freeman
Publikováno v:
Cement and Concrete Composites. 13:209-217
The resistance of Portland cement concrete to sulfate attack is affected by the incorporation of fly ash. The effects of fly ash are variable and are dependent on the physical and compositional characteristics of the fly ash. Both ASTM Type I and Typ
Publikováno v:
"SP-177: Ettringite, the Sometimes Host of Destruction".
The occurrence of premature concrete deterioration found in Texas Department of Transportation (TxDOT) precast concrete elements and other types of concrete structures found in Texas has prompted TxDOT to conduct an investigation into the cause of th
Publikováno v:
SPIE Proceedings.
An instrument has been developed to estimate stress levels in prestress strands in existing members. The prototype instrument applies a lateral load to an exposed prestressing strand and measures the resulting displacements. The instrument was calibr
Autor:
Aykut Cetin, Ramon L. Carrasquillo
Publikováno v:
ACI Materials Journal. 95
Test results are reported from an experimental study in which the effect of four coarse aggregate types, locally available in central Texas, on the mechanical properties of low water-cement ratio mixes, namely compressive strength, elastic modulus, a