Name: Plastic Limit Test Apparatus
Item: Plastic Limit Test Apparatus
Rating: 5
Author: Anshul Johri

DESCRIPTION
SPECIFICATIONS
FEATURES
VIDEO
New
WORKING PRINCIPAL
New
REVIEW

OVERVIEW

Product Overview

The plastic limit is defined as the lowest moisture content of a soil that will permit a sample to be rolled into threads of 3 mm diameter without the threads breaking. The apparatus required is simple yet effective.

The Complete set consist of one each:

Glass plate 20cm X 15cm having ground ends and one side frosted – 01 No
Brass or stainless steel rod 3mm dia X 150mm long – 02 Nos.
Flexible spatula – 01 No
Moisture containers – 06 Nos.
Porcelain basin – 100mm dia – 01 No

SPECIFICATIONS

Product Overview

The Complete set consist of one each:

Glass plate 20cm X 15cm having ground ends and one side frosted – 01 No
Brass or stainless steel rod 3mm dia X 150mm long – 02 Nos.
Flexible spatula – 01 No
Moisture containers – 06 Nos.
Porcelain basin – 100mm dia – 01 No

FEATURES

Applications

The Complete set consist of one each:

1. Glass plate 20cm X 15cm having ground ends and one side frosted – 01 No
2. Brass or stainless steel rod 3mm dia X 150mm long – 02 Nos.
3. Flexible spatula – 01 No
4. Moisture containers – 06 Nos.
5. Porcelain basin – 100mm dia – 01 No

PRODUCT VIDEO

WORKING PRINCIPALNew

Plastic Limit Test Apparatus

Working Principle (Step by Step)

1. Objective

The Plastic Limit Test apparatus is used to determine the plastic limit (PL) of soil, which is the minimum moisture content at which soil just begins to behave plastically.

2. Sample Preparation

A small quantity of air-dried soil passing through 425-micron IS sieve is taken.
Soil is mixed with distilled water to form a uniform plastic mass.

3. Rolling of Soil Thread

A portion of the prepared soil is taken.
It is rolled by hand on a glass plate (part of the apparatus) into a thread.

4. Reduction in Diameter

Rolling is continued until the soil thread reaches approximately 3 mm diameter.
Uniform pressure is applied during rolling.

5. Crumbling Stage

At a particular moisture content, the soil thread starts crumbling or breaking at 3 mm diameter.
This condition indicates the soil has reached its plastic limit.

6. Moisture Content Determination

The crumbled soil pieces are collected.
Moisture content is determined using the oven-dry method.

7. Repetition & Average

The test is repeated at least three times.
The average moisture content is reported as the Plastic Limit (PL).

Working Principle (In One Line)

The plastic limit is the moisture content at which soil changes from a plastic to a semi-solid state, identified by crumbling of soil threads at 3 mm diameter.

Standards Followed

IS: 2720 (Part 5)
ASTM D4318

Key Advantages

Simple and reliable test
Helps in soil classification
Used along with Liquid Limit to find Plasticity Index

Hindi Version

प्लास्टिक लिमिट टेस्ट उपकरण

कार्य सिद्धांत (स्टेप बाय स्टेप)

1. उद्देश्य

प्लास्टिक लिमिट टेस्ट का उपयोग मिट्टी की प्लास्टिक लिमिट (PL) ज्ञात करने के लिए किया जाता है।
प्लास्टिक लिमिट वह न्यूनतम नमी प्रतिशत है जिस पर मिट्टी प्लास्टिक अवस्था से अर्ध-ठोस अवस्था में बदलने लगती है।

2. नमूना तैयारी

425 माइक्रोन IS छलनी से छनकर निकली हुई हवा में सुखाई गई मिट्टी ली जाती है।
मिट्टी में डिस्टिल्ड पानी मिलाकर एक समान और चिकना पिंड बनाया जाता है।

3. मिट्टी की डोरी (Thread) बनाना

तैयार मिट्टी का थोड़ा सा भाग लिया जाता है।
इसे काँच की प्लेट (Glass Plate) पर हाथ से रोल किया जाता है।

4. व्यास कम करना

रोलिंग तब तक की जाती है जब तक मिट्टी की डोरी का व्यास लगभग 3 मिमी न हो जाए।
रोलिंग के दौरान समान दबाव लगाया जाता है।

5. टूटने की अवस्था

एक विशेष नमी पर पहुँचने पर, 3 मिमी व्यास पर मिट्टी की डोरी टूटने या बिखरने लगती है।
यही अवस्था मिट्टी की प्लास्टिक लिमिट को दर्शाती है।

6. नमी प्रतिशत ज्ञात करना

टूटी हुई मिट्टी को इकट्ठा किया जाता है।
इसका ओवन ड्राई विधि से नमी प्रतिशत निकाला जाता है।

7. परीक्षण की पुनरावृत्ति

यह परीक्षण कम से कम 3 बार किया जाता है।
तीनों रीडिंग का औसत मान ही प्लास्टिक लिमिट (PL) माना जाता है।

एक पंक्ति में कार्य सिद्धांत

प्लास्टिक लिमिट वह नमी प्रतिशत है जिस पर 3 मिमी व्यास की मिट्टी की डोरी रोल करने पर टूटने लगती है।

मानक (Standards)

IS: 2720 (Part-5)
ASTM D4318

REVIEWNew

Excellent machine! Accurate readings and very sturdy build. The installation team was professional and the after-sales support has been great. Highly recommend for any lab or industrial use.

⭐⭐⭐⭐⭐

KALI

Excellent machine! Accurate readings and very sturdy build … Highly recommend for any lab or industrial use.

⭐⭐⭐⭐

Ratnesh

very good at Response and user friendly machines

⭐⭐⭐⭐⭐

POOJA

With the highly efficient and accurate Servo Universal Testing Machine by Vertex, Now I can test the TMT Bar great accuracy. With the help of this instrument,

⭐⭐⭐⭐⭐

Amjad Ali

The automatic blain air of flowing sample has an amazing accuracy and is simply easy to use. Our team of operators have been using it for more than 7 months now and have submitted zero complaints.

⭐⭐⭐⭐

Faruq Ali

I recently purchased a Servo Compression Automatic Compressive Machine 3000kN from Vertex and I couldn’t be more pleased. The instrument is of high-quality and helps to accurately measure the strain distribution in the preforms. It is easy to use and produces reliable test results.

⭐⭐⭐⭐⭐

Ritesh

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