ASCE 53-10

Abstract

<strong>SCOPE OF THE CONSENSUS GUIDE</strong> <br>Compaction grouting is a ground improvement technique that improves the strength and/or stiffness of the ground by slow and controlled injection of a low-mobility grout. The soil is displaced and compacted as the grout mass expands. Provided the injection process progresses in a controlled fashion, the grout material remains as a growing mass within the ground and does not permeate or fracture the soil. This behavior enables consistent densification around the expanding grout mass, resulting in stiff inclusions of grout surrounded by soil of increased density. <br>This guide focuses specifically on applications of compaction grouting where the increased strength and/or stiffness of the soil due to compaction is a primary element of the ground improvement. Applications where a ground improvement design requires the injected grout to obtain a strength greater than that of the surrounding soil, although potentially a valid application of low-mobility grout, are not considered to be compaction grouting for the purposes of this guide and hence are beyond the scope of this document. <br>Both practical and theoretical aspects of compaction grouting are discussed. <br>This guide follows the guidelines of the ASCE and uses the International System of Units (SI) as the primary system of units; imperial units are also provided in parentheses. Compaction grouting in North America typically uses imperial units in the field; hence many of the SI units have been calculated from the original imperial equivalents. In these cases an effort has been made to keep the "rule of thumb" values in their original form, and some loss of accuracy in the conversion between units may occur. <br>This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address the safety problems associated with its application. It is the responsibility of whoever uses this standard to establish appropriate safety and health practices and to determine the applicability of regulatory and nonregulatory limitations.