Salah satu permasalahan pada tanah yang sering menjadi kendala dalam suatu kegiatan konstruksi salah satunya adalah penurunan tanah. Tujuan penelitian ini menganalisis sifat fisik dan mekanik lempung besar nilai daya dukung konsolidasi setelah dilakukan grouting. Metode perbaikan metode Grouting menggunakan bahan semen portland kapur aktif. Variasi akan digunakan 2 titik grouting kombinasi (d =...

High-speed railways are built in deep soft-soil foundations interlayered with hard materials. However, the layers cannot be penetrated by conventional foundation treatment. Moreover, project cost is sometimes prohibitive, which an issue for post-construction subsidence control. The bag grouting pile a special grouting-pile-reinforcement technique treating This paper conducted tests on Ningbo-Ta...

The longevity of grouting has a significant effect on the safe and sustainable operation of many engineering projects. A 500-day experiment was carried out to study the long-term mechanical behavior of nano silica sol grouting. The nano silica sol was activated with different proportions of a NaCl catalyst and cured under fluctuating temperature and humidity conditions. The mechanical parameter...

We present a detailed survey of the ongoing destabilization process of the Mosul dam. The dam is located on the Tigris river and is the biggest hydraulic structure in Iraq. From a geological point of view the dam foundation is poor due to a site geology formed by alternating strata of highly soluble materials including gypsum, anhydrite, marl and limestone. Here we present the first multi-senso...

Aiming at the problems of difficult support mining roadway under goaf close distance coal seam, obvious large deformation, and long-term continuous deformation surrounding rock, an advanced bolt-grouting system is proposed. The can effectively solve problem from design system, construction monitoring evaluation realize intelligent support. Based on actual engineering background 29204 working fa...

Measures of success for any grouting program should include superior technical performance and cost effectiveness. These can be achieved by designing grouts with properties that are specifically tailored to the application. This requires a fundamental understanding of the fluid and set performance characteristics needed for a specific application. For high mobility cement based grouts (HMG), th...

This paper describes the development of a Retrievable Subsurface Accelerometer (RSA) for the NSF George E. Brown, Jr., Network for Earthquake Engineering Simulation (NEES) project at UCLA. The RSA was developed to obtain subsurface vibration data during forced-vibration experiments and aftershock events. The RSA can be rapidly installed using a CPT truck and subsequently retrieved using structu...

Grouting reinforcement is one of the most effective methods to enhance stability goaf, and its scheme selection, hole location, parameter determination directly affect success or failure goaf treatment. On basis discussion deformation mechanism evolution law longwall this article comprehensively analyzed grouting combined with filling theory, permeability fracturing theory studied physical chem...

This study presents an innovative technique of executing soil nails called sectorized post grouting (SPG). The most utilized nail is gravity grouting, with the literature reporting advances in pressurized grouting. Although obtaining higher pullout resistance nails, mostly done single-stage does not compensate for exudation and its use lengths difficult. Thus, a has been developed that compensa...