ASTM International

Standard Guide for Approximation of Optimum SO3 in Hydraulic Cement Using Compressive Strength
 N C563

Annotation

This guide describes the determination of approximate optimum SO3 for maximum compressive strength at 24 h, 3 days, or 7 days by measuring the change in strength produced in hydraulic cement mortar as a result of substituting calcium sulfate for a portion of the cement.

This guide refers to the sulfur trioxide (SO3) content of the cement only. Slag cements and occasionally other hydraulic cements can contain sulfide or other forms of sulfur. The determination of SO3 content by rapid methods may include these other forms, and may therefore produce a significant error. If a significant error occurs, analyze the cement for SO3 content using the reference test method of Test Methods C114 for sulfur trioxide.

Values stated as SI units are to be regarded as standard.

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.

Автоматический перевод:

Стандартная Руководство для аппроксимации оптимальной so3 в гидравлического цемента прочность на сжатие

В этом руководстве описаны определения приближенного оптимального ЅО3 для максимальной прочности при сжатии на 24 часа, 3 дня или 7 дней, измеряя изменение прочности изготовлен из цементного раствора в результате замещения сульфата кальция на часть цемента.