Radioisotope X-ray Methods for Field Analysis of Wet Concrete Quality - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Radioisotope X-ray Methods for Field Analysis of Wet Concrete Quality write by P. F. Berry. This book was released on 1969. Radioisotope X-ray Methods for Field Analysis of Wet Concrete Quality available in PDF, EPUB and Kindle.
Radioisotope X- and Gamma-ray Methods for Field Analysis of Wet Concrete Quality
Radioisotope X- and Gamma-ray Methods for Field Analysis of Wet Concrete Quality - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Radioisotope X- and Gamma-ray Methods for Field Analysis of Wet Concrete Quality write by Patrick Fleetwood Berry. This book was released on 1970. Radioisotope X- and Gamma-ray Methods for Field Analysis of Wet Concrete Quality available in PDF, EPUB and Kindle. The results of an initial feasibility study, (covered in detail by an earlier report are reviewed, and the design and operation of a prototype instrument for the field determination of cement in wet (plastic) Portland cement concrete are described. Gamma-ray scattering techniques are used in a probe of submersible design. Two radioisotope sources are employed with a single scintillation counter detector. The electronic unit simultaneously registers the two intensities and the cement content is interpreted from a calibration curve. The measurement is compensated for bulk density and water content variation and is insensitive to aggregate particle size. Compensation for aggregate type is discussed. The instrument is portable, rugged and simple to operate. The method appears sound for concrete mixes containing aggregates which are predominantly siliceous in nature. Although applicable to aggregate mixes which contain some limestone, accuracy declines rapidly with increasing limestone content as a result of the reduction in the intrinsic, sensitivity to cement factor and the increase in the bulk density influence.
Public Roads
Public Roads - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Public Roads write by . This book was released on 1971. Public Roads available in PDF, EPUB and Kindle.
Evaluation of the Troxler Model 4430 Water-Cement Gauge
Evaluation of the Troxler Model 4430 Water-Cement Gauge - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Evaluation of the Troxler Model 4430 Water-Cement Gauge write by Highway Innovative Technology Evaluation Center (U.S.). This book was released on 1996-01-01. Evaluation of the Troxler Model 4430 Water-Cement Gauge available in PDF, EPUB and Kindle. Prepared by the Highway Innovative Technology Evaluation Center, a CERF Service Center. This report describes a HITEC evaluation designed to determine the basic capabilities and limitations of the Model 4430 gauge, manufactured by the Troxler Electronic Laboratories,Øfor use in quality control and quality assurance procedures for concrete construction. The ratio of water to cementitious materials in a concrete mix is recognized as a prime determinant of the strength and ultimate durability of the concrete. The Model 4430 Nuclear Water/Cement Ratio Gauge is designed to measure the water-to-cement ratio in fresh concrete sequentially. The evaluation was carried out in four phases: computer simulations, laboratory testing,precision and bias evaluation, and field demonstrations.
Report No. FHWA-RD.
Report No. FHWA-RD. - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Report No. FHWA-RD. write by United States. Federal Highway Administration. Offices of Research and Development. This book was released on 1977. Report No. FHWA-RD. available in PDF, EPUB and Kindle.
