unconfined compressive strength in zambia

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  UNCONFINED COMPRESSION TEST Aim Introduction

  — UNCONFINED COMPRESSION TEST Aim The purpose of this laboratory is to determine the unconfined compressive strength of a cohesive soil sample We will measure this with the unconfined compression test which is an unconsolidated undrained UU or Q type test where the late ral confining pressure is equal to zero

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  Development of a new empirical model and adaptive neuro

  — The uniaxial compressive strength UCS of intact rocks is an important mechanical property required for designing civil and mining engineering surface and underground structures such as dams tunnels subways and mines Mohammadi and Tavakoli 2015 The routine direct method for obtaining UCS is the uniaxial compressive

  Unconfined Compressive Strength of Bacillus Springer

  — The study considered the use of Bacillus pumilus to trigger microbial induced calcite precipitation MICP process for the improvement of the unconfined compressive strength UCS of lateritic soil to be used as a hydraulic barrier in waste containment application The lateritic soil was treated with stepped Bacillus pumilus

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  Unconfined Compressive Strength UCS and Compressibility

  — Uniaxial Compressive Strength UCS and compressibility indices are essential tests for calculation of bearing capacity and settlement of cohesive soil in the foundation of building construction These tests are time consuming and demand significant effort Therefore the Dynamic Cone Penetrometer Index DCP can be utilized as an

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  Combined Effect of Biopolymer and Fiber Inclusions on Unconfined

  — The results show that the biopolymer associated with fibers has an unconfined compressive strength similar to that of fiber reinforced soil However it then increases with different curing times and conditions which can be up to MPa MPa The combined effect of fibers and the biopolymer is not simply equivalent to the sum of

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  ASTM International ASTM D2166/D2166M 13 Standard

  — This test method covers the determination of the unconfined compressive strength of cohesive soil in the intact remolded or reconstituted condition using strain controlled application of the axial load This test method provides an approximate value of the strength of cohesive soils in terms of total stresses

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  PDF Unconfined Compressive Strength and Young s

  The unconfined compressive strength for site A ranged from 165 to 176 MPa and that for site B from 93 to 136 MPa A regression analysis was performed using the data obtained from the tests and an

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  Scale effects in rock strength properties Part 1 Unconfined

  In comparison the effect on unconfined compressive strength is much lower Depending on the measuring technique used for longitudinal displacement along the core sample the modulus of elasticity increases and the strain destruction work decreases with core length

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  Effect of Wetting on Unconfined Compressive Strength of

  — Wetting for one day on the last day was found to decrease the unconfined compressive strength of cemented sand whereas wetting for one day in the middle of curing resulted in an increase in strength The strength reduction due to wetting on the last day decreases as the cement ratio increases For a specimen under repetitive wetting and

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  Time Variation Effect on Unconfined Compressive

  — Time Variation Effect on Unconfined Compressive Strength Value on Clay and Silt Stabilized using Cement on Soaking Condition Dindha Amalia Syananta1 Idharmahadi Adha2 Setyanto3 Abstract Soil in Indonesia

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  Unconfined compressive strength UCS prediction in

  — uniaxial compressive strength test triaxial compressive strength test scratch test Schmidt hammer test and point load test These laboratory measurements are considered the most accurate and reliable method for determining such properties [4] However since retrieving core samples representing the sections of interest is very costly

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  Unconfined compressive strength of clay soils at different

  — Unconfined compressive strength S {u} is one of the soil engineering parameters used in geotechnical to the temperature changes caused by some human activities it is important to study the changes in S {u} at different temperatures On the other hand due to the differences in the mineralogical composition of clay soils it

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  Experimental study on unconfined compressive strength

  The unconfined compressive strength of L C lignin and cement improved expansive soil reaches the maximum when the cement content is fixed at 4% and the lignin content is 1% The unconfined compressive strength of L C improved soil increases with the increase of compaction degree and curing age

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  Determination of unconfined compressive strength of coal

  misc{etde 7171831 title = {Determination of unconfined compressive strength of coal for pillar design} author = {Hirt A M and Shakoor A} abstractNote = {The compressive strength of coal and its variation within and between seams was determined for four Pennsylvania coal seams Pittsburgh Sewickley Upper Kittanning and Lower Kittanning Large coal

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  Unconfined Compressive Strength of Bacillus Springer

  — The study considered the use of Bacillus pumilus to trigger microbial induced calcite precipitation MICP process for the improvement of the unconfined compressive strength UCS of lateritic soil to be used as a hydraulic barrier in waste containment application The lateritic soil was treated with stepped Bacillus pumilus

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  Unconfined compression strength modelling of expansive

  — Genetic programming GP is presented as a new tool for the unconfined compression strength of expansive soils UCS ES by utilizing an experimental database with 195 datapoints The five input parameters employed in formulation of gene expression programming GEP and multi gene expression programming MEP models are clay

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  Unconfined Compressive Strength Estimation in the Shale

  — ABSTRACT Identifying and predicting rock unconfined compressive strength is critical to well design wellbore stability and hydraulic fracturing stimulation in shales However accurate prediction of rock mechanical properties is hard in the absence of high resolution advanced geophysical logs image logs and laboratory mechanical

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  Closed Form Equation for Estimating Unconfined Compressive Strength

  — The use of three artificial neural network ANN based models for the prediction of unconfined compressive strength UCS of granite using three non destructive test indicators namely pulse velocity Schmidt hammer rebound number and effective porosity has been investigated in this study For this purpose a sum of 274 datasets was

  Compaction Characteristics Unconfined Compressive Strengths and

  — The unconfined compressive strength also increased when crumb rubber was mixed with soil with the highest strengths also corresponding to the addition of 2 4% of crumb rubber In all fine grained soils except those containing montmorillonite increasing the size of the crumb rubber used resulted in a reduction in the unconfined compressive

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  Prediction of the Unconfined Compressive Strength of a One

  — This study focused on exploring the utilization of a one part geopolymer OPG as a sustainable alternative binder to ordinary Portland cement OPC in soil stabilization offering significant environmental advantages The unconfined compressive strength UCS was the key index for evaluating the efficacy of OPG in soil stabilization

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  Closed Form Equation for Estimating Unconfined Compressive Strength

  — The use of three artificial neural network ANN based models for the prediction of unconfined compressive strength UCS of granite using three non destructive test indicators namely pulse velocity Schmidt hammer rebound number and effective porosity has been investigated in this study For this purpose a sum of 274 datasets was

  Unconfined Compressive Strength of Bacillus Springer

  — The study considered the use of Bacillus pumilus to trigger microbial induced calcite precipitation MICP process for the improvement of the unconfined compressive strength UCS of lateritic soil to be used as a hydraulic barrier in waste containment application The lateritic soil was treated with stepped Bacillus pumilus

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  OF EXPERIMENTAL

  — development of experimental correlations between indentation parameters and unconfined compressive ct&f ciencia tecnología y futuro vol 3 núm 4 dic 2008 61 development of experimental correlations between indentation parameters and unconfined compressive strength ucs values in shale samples

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  Scale effects in rock strength properties Part 1 Unconfined

  — In comparison the effect on unconfined compressive strength is much lower Depending on the measuring technique used for longitudinal displacement along the core sample the modulus of elasticity

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  Variation of unconfined compressive strength of unsaturated soils

  — The parameter is estimated for two types of soils red soil and black cotton soil available in the state of Karnataka using measured values of total suction and unconfined compressive strength

  Unconfined Compressive and Splitting Tensile Strength of

  — The test results show that both the unconfined compressive strength UCS and splitting tensile strength STS at a given basalt fiber content increase significantly with increasing calcite content whereas the axial strain of the peak failure state decreases with increasing calcite content The improved ductility has implications for loading

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  Unconfined compressive strength and ductility of fiber

  — The test results indicate that the inclusion of PVA fiber has a significant effect on both the unconfined compressive strength UCS and the axial strain at peak strength The increase in the UCS was most apparent in the 2% cemented specimen wherein the UCS increased more than three times as the fiber ratio increased up to 1%

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  The Grain Based Model Numerical Simulation of Unconfined Compressive

  — PFC GBM Particle Flow Code Grain Based Model is the major and fundamental method to simulate rock behaviors in this paper Geo materials are composed of micro grains the behavior of these grains and the interface between them influence macroscopic behavior of materials Traditional PFC simulation method could simulate the