AASHTO T133-19 pdf free download
AASHTO T133-19 pdf free download.Density of Hydraulic Cement.
1. SCOPE 1.1. This method covers determination of the density of hydraulic cement. Its particular usefulness is in connection with the design and control of concrete mixtures. 1.2. The density of hydraulic cement is defined as the mass of a unit volume of the solids. 1.3. The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Warning一Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure. 2. REFERENCED DOCUMENTS 2.1. AASHTO Standard: T 105, Chemical Analysis of Hydraulic Cement 2.2. ASTM Standards: C125, Standard Terminology Relating to Concrete and Concrete Aggregates C219, Standard Terminology Relating to Hydraulic Cement C604, Standard Test Method for True Specific Gravity of Refractory Materials by Gas- Comparison Pycnometer C670, Standard Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials D2638, Standard Test Method for Real Density of Calcined Petroleum Coke by Helium Pycnometer.3. TERMINOL .OGY 3.1. Definitions- For definitions of terms used in this test method, refer to the terminology in ASTM C125 and C219. 4. SIGNIFICANCE AND USE 4.1. This test method provides a procedure for the determination of density of hydraulic cement samples using non-instrumental techniques. 5. APPARATUS 5.1. Le Chatelier Flask- The standard flask- -Is circular in cross section with shape and dimensions conforming essentially to Figure 1 (see Note 1). The requirements in regard to tolerance, inscription and length, spacing, and uniformity of graduation will be rigidly observed. There shall be a space of at least 10 mm between the highest graduation mark and the lowest point of grinding for the glass stopper. Note 1- -The design is intended to ensure complete drainage of the flask when emptied and stability of standing on a level surface as well as accuracy and precision of reading.5.1.1. The material of construction shall be best quality glass, transparent and free of striae. The glass shall be chemically resistant and shall have small thermal hysteresis. The flasks shall be thoroughly annealed before being graduated. They shall be of sufficient thickness to ensure reasonable resistance to breakage. 5.1.2. The neck shall be graduated from 0 to 1 mL and from 18 to 24 mL in 0.1-mL graduations. The error of any indicated capacity shall not be greater than 0.05 mL. 5.1.3. Each flask shall bear a permanent identification number and the stopper, if not interchangeably ground, shall bear the same number. Interchangeable ground-glass parts shall be marked on both members with the standard-taper symbol, $, followed by the size designation. The standard temperature shall be indicated, and the unit of capacity shall be shown by the letters“mL” placed above the highest graduation mark. 5.2. Kerosene, free of water, or naphtha, having a density greater than 0.7391 mL at 23土2°C shall be used in the density determination.AASHTO T133-19 pdf download.
