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Aug 22, 2016 The determination of the consistency (condition) can be done both in situ and in the laboratory. In the case of the in-situ test, the condition of a cohesive type of soil is to be determined as follows:
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Aug 22, 2016 Using the soil samples' water content at the liquid and plastic limits, wL and wP (Atterberg consistency limit), according to [[ASTM D4318-10]] and/or [DIN18122], and the natural water content w, the consistency index IC (or CI) can be calculated : (Formula: Consistency index) The consistency index is a numerical representation of the consistency of a soil. (Table: Consistency index IC and designation of the soil state of cohesive soils in accordance … |
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Aug 22, 2016 Soil plasticity is the “Property of a cohesive soil, which changes its mechanical behaviour with change in the water content” [DINENISO14688:2001]. The plasticity is the range between the liquid- and the plastic limit. This range is classified into very soft, soft and firm [DIN18122]. (Image: Consistency band [Trian00]) |
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Aug 22, 2016 The state conditions of the plastic range are shown as numerical values in the table. The liquidity index IL = 1 - IC is also listed. (Table: Conditions in the plastic range [DIN18122]) |
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Aug 22, 2016 The degree of plasticity is obtained from the water content of the soil at the liquid limit wL [[ASTM D4318-10]], and is as per [ [DIN18196:2011]] and [ [DINENISO14688:2018]], divided into:
The plasticity index, IP, is used in order to achieve a clear distinction of the cohesive soil type into silt or clay, as well as in silty or … |
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Aug 22, 2016 Special classifications and designations for fine soils (silt and clay) subject to the liquid limit wL can be found in EN ISO 14688-2. [ [DINENISO14688:2018]] (Table: Classification of fine soils subject to the liquid limit wL or plasticity index IP as per EN ISO 14688-2) |
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Jun 22, 2023 Rehabilitation of a DN 400 concrete sewer section with “Lining with Cured-In-Place Pipes” (product name: SAERTEX-LINER® MULTI, type S+ Standard). The aim of the rehabilitation measure was the static strengthening and the restoration of the tightness of the old sewer. |
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Jun 15, 2023 Rehabilitation of a DN 400 Concrete Gravity Sewer with a SAERTEX-LINER® MULTI over a Length of 69 m The light source, hereinafter also referred to as a light chain, consists of a defined number of sections that have one or more UV lamps. The sections of the light chain have wheel sets that ensure an almost centric positioning of the UV lamps in the lining tube. In this application, each section of the light chain had one UV lamp. The entire light chain consisted of 9 sections (9 x 400/600 Watt). The UV lamps were visually inspected on-site and … |
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Aug 21, 2020 News Tentamus Group GmbH At Tentamus Group, we are happy to announce the launch of a new web tool capable of combining the results of the analysis of the coronavirus (SARS-CoV-2) in wastewater together with indicators of health evolution: TENTAMUS WATCHER.
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Sep 03, 2020 News Kim Genardo Along a well-traveled stretch of Winston-Salem’s Peters Creek Parkway, local motorists and visitors can’t miss the colorful, 50-foot-tall otter. Stretching 290 feet across the ground-level water tank, the artwork is a nod to both the local water supply and the North American River Otter that is indigenous to the Yadkin River.
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Sep 24, 2020 News Matthew Brennan Esco Tool has introduced a new clamshell style, O.D. mounted split frame machine that features fast, accurate, and easy to setup indexable tooling to part and bevel tube and pipe from 2” to 48” dia.
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Sep 25, 2020 News Irish Water Irish Water’s Kilkenny Sludge Project has been recognised at the prestigious Water Industry Awards, which promotes excellence in the water industry across the UK and Ireland.
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Sep 28, 2020 News Pipeline Renewal Technologies A Guide to Bidding on and Winning Government Contracts
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May 26, 2022 News Louise Elliott Water industry training programmes have had to undergo a transformation to ensure essential learning continues during the coronavirus pandemic. Ceris Van de Vyver, head of technology and training at global innovation consultancy Isle, shares insights into delivering training virtually.
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Oct 02, 2020 News Louise Elliott Water utilities who already had remote access to their systems were at an advantage when Covid-19 lockdowns were introduced around the world. The information comes from a report carried out by technology consultancy Isle on behalf of the Water Action Platform collaborative initiative.
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Oct 13, 2020 News Envirosight Request a free illustrated guide to sewer inspection trucks.
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Oct 19, 2020 News Colleen McKenna Experienced software providers team up to offer asset management, regulatory compliance tools for distribution and collection teams
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Oct 20, 2020 News Tyler D. Sandell On July 1st, 2020, The Atkinson / Technique Joint Venture entered into a contract with Kelley Engineered Equipment (KEE) for the supply of a 90.25” (2.3 m) digger shield. On August 15th, just Six weeks later, the machine was on site and ready to work. Averaging about 5.3’ (1.6 m) per day, the distance needed to install 4 rings of liner plate, the shield finished its drive on October 6th, 2020.
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Oct 21, 2020 News Lila Thompson British Water chief executive Lila Thompson says a new Memorandum of Understanding (MoU) agreed between India and the UK’s leading water sector trade association will “bring a great boost” to trading relationships between the two countries. Thompson’s comments came at the India-UK Water Partnership Forum, a virtual event which took place on 22 September 2020.
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Oct 22, 2020 News Louise Elliott Water companies can expect increasing scrutiny into their environmental performance, as customer awareness of river and bathing water quality grows. This was among messages from Helen Wakeham, deputy director of water quality at the Environment Agency, during a keynote address at the Zero Pollutions Conference 2020, hosted by technology consultancy Isle.
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Oct 23, 2020 News Todd Versteeg Vermeer expands its horizontal directional drilling (HDD) fluid management equipment line with the new R600T reclaimer.
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Oct 26, 2020 News Lianne Ayling Data from a study to improve optimisation of SAF wastewater treatment systems is the focus of a presentation from WPL that took place at the 2020 European Water & Wastewater Management conference on 13-14 October.
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Oct 27, 2020 News Jeff Smith Hoffman Southwest Corp., a provider of underground pipe inspection, cleaning, repair and locating services throughout the U.S., announced that the company changed its name to National Underground Group.
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