Completely weathered granite results in a hard plastic sandy soil which has the characteristics of low bearing capacity and easy disintegration in groundwater (LIU et al. …
The simultaneous use of demolished concrete lumps, recycled coarse aggregates (RCAs), and recycled sand (RS) from weathered residual soil of granite in concrete can significantly improve the recycling of construction and demolition waste, but the effects of the aforementioned three waste materials on the shrinkage behavior of …
The interpreted resistivity model exhibit values ranging from 10 to about 10 5 Ω-m with two distinct features i.e., minor weathered-fractured zones and massive granite as the basement. The ...
A great deal of weathered granite soils are distributed in mountainous areas around the world. With further improvements to the civil engineering, more and more construction infrastructures (roads, railways, dams, etc.) in mountainous areas will be built. Making full use of weathered granite soils, a type of special geomaterial, can alleviate …
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1.. IntroductionGranite weathering profiles (or weathered granitic crust) with thicknesses in the range of 20–60 m are widely distributed in South China.These profiles include geological structures with mixed soils and rocks originating from weathered parent rocks and remaining in situ.
A large-scale flume experiment was performed to evaluate the mechanism of landslide occurrence due to rainfall using weathered granite sand. The dimensions of the flume were 9 m (length), 1 m (width), and 1 m (depth). The weathered granite sand from the actual landslide site at Da Nang City, Vietnam was used. The pore water pressure was …
A hydraulic rotary drill instrumented with a drilling process monitoring system (DPM) was used for site investigation in Hong Kong weathered granite foundation engineering. The penetrating parameters such as effective thrust force, rotational speed, flushing pressure, penetrating rate and displacement of the bit were monitored in real time. A varied slope …
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In addition, the rainfall mainly infiltrated the strongly weathered granite layer (impermeable interface) along the gaps, causing the landslide. Therefore, the surface residual soil and the completely weathered granite are …
The rock cycle is called the rock cycle because the diagram for the types of rocks and their changes is formed into a circle. It almost depicts rocks going through a cycle.
In order to investigate the mechanism of water-rich and fully-weathered granite on the water bursting and mud bursting, the single-factor variable method is adopted in this research. The factors, such as particle size gradation, initial porosity, water pressure, confining pressure and anti-outburst thickness are chosen in this paper, to evaluate …
A weathered granite tunnel with five groundwater and mud inrush disasters was presented as a case study. • Twenty-five grouting cycles conducted in the project were applied to discuss the grouting optimization in the completely weathered granite formation. • Improved grouting parameters and evaluation criteria were proposed for grouting ...
Compressive behavior and water permeability of recycled lump-aggregate concrete with recycled sand from weathered residual soil of granite
Protection of neighbour buildings due to construction of shield tunnel in mixed ground with sand over weathered granite Download PDF. Qing-Long Cui 1, Huai-Na Wu 2 ... Tóth et al. presented a classification system categorising mixed-face ground and proposed a method to maintain safety in construction and to protect the surrounding …
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Water-Rich Fully Weathered Granite on Water Bursting and Mud Bursting Suping Zheng* Fujian Jiangxia University, Fuzhou, China ... anti-outburst thickness are chosen to determine each factor on the evolution of sand gushing, porosity, permeability, fine particle concentration, and water gushing velocity. ... Large triaxial testing system: (A ...
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In order to investigate the mechanism of water-rich and fully weathered granite on the water bursting and mud bursting, the single-factor variable method is ...
The Unified Soil Classification System, as outlined in ASTM 2488 – "Standard Practices for Description of Soils (Visual – Manual Procedure)", provides a ... as opposed to extremely weathered, partially cemented, ... percentage of sand size particles present in the sample.
This paper presents a comprehensive investigation into weathered granitic gneiss in Guangzhou, China, including its formation, grading, classification, and the geotechnical characteristics of different weathered states. The granitic weathering profiles are graded into five weathered states: fresh rock, slightly weathered, moderately …
Weathered granite is widely distributed in the southeastern coastal sea area of China, with the weathered granite layer dominating the seabed conditions in Fujian, Guangdong and part of Shandong Province. ... GDS ELDyn dynamic triaxial test system and loadings on testing sample. ... the mucky soft clay, the silty sand and the …
Weathered granite contains a high concentration of feldspar, quartz, and kaolin. However, while it becomes rich in clay due to strong physical weathering, the granite minerals that are not fully weathered are still very hard, which makes the grinding process more difficult and limits its use. This study proposes a multi-step process …
Our supply of weathered landscaping stones create elegant wall systems, seating areas, spaces for garden beds and even patio furniture. The varied textures and shapes bring …
Deep Weathering Profiles on Granite. In general, near-surface mantles of weathered rock are transitions from fresh, solid rock at depth to in situ surface soil, subdivided in the …
weathered granite soils excavated in the field have been re- used with compaction as fill materials for sewers and water supply pipelines and structural foundations.
The use of both recycled coarse aggregates (RCAs) and recycled sand (RS) derived from weathered residual soil of granite (WRSG) into concrete has the potential to greatly enhance the recycling of construction and demolition waste.
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The purpose of this case study is to introduce a new weathering classification system of rocks based on the engineering properties. Even though several authors have suggested different classification systems worldwide, limited research has been conducted to propose a classification system that includes more than two engineering properties. …
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