Welcome to Proteus Equipment

Asphalt Equipment & manhole lifters

Proteus Equipment has been supplying equipment for the road surfacing industry since 1985, and is now the leading supplier of asphalt Hot Boxes, asphalt duvets, and environmentally-friendly fluids. 

We also sell concrete duvets for various insulation applications, and a wide range of manhole covers lifters designed to lift covers quickly and safely.

We offer the highest QUALITY equipment

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Man Hole Cover Lifters

Proteus has been the market leader in providing mechanical and hydraulic manhole cover lifters for the last 20 years, and we can use our experience in the field to provide solutions to all your manhole lifting problems.Lifting manhole covers isn’t as easy as you’d expect, due in part to the vast array of different keyholes available on different types of cover, and differing sizes of covers coupled with awkward locations.

How to Calculate Quantities of Cement, Sand and Aggregate for Nominal Concrete

A simple yet more accurate method (DLBD method) of calculating cement, sand and aggregate for Nominal Concrete mix M15, M20, M25 and M30 grade Concrete Step-1: Calculate Volume of materials required Density of Cement = 1440 kg/cum (Approx) Volume of

Silt Content Test for Sand (Fine Aggregate)

2018/02/19 · Find out silt content in sand (fine aggregate) Apparatus required 250 ml measuring cylinder Water Sand & Tray Test Procedure First, we have to fill the measuring cylinder with 1% solution of salt and water up to 50 ml.

Significance of Curing of Concrete for Durability of Structures

Concrete strength gain - Concrete strength increase with age as moisture and a favorable temperature is present for hydration of cement. An experimental investigation was conducted by "Cement, Concrete & Aggregates Australia" (CCAA) and the same was published in their data sheet on "Curing of Concrete," which has been included in this article for reference.

How To Plan and Manage Curing for Mass Concrete Pours

Jul 29, 2014 · How To Plan and Manage Curing for Mass Concrete Pours ... does not provide specific size limits to define mass concrete. ACI defines mass concrete as “any volume of concrete with dimensions ...

Process of manufacture of concrete

Nov 08, 2014 · BATCHING Batching is the process of measuring concrete mix ingredients by either mass or volume and introducing them into the mixer . To produce concrete of uniform quality, the ingredients must be measured accurately for each batch.

NRMCA | Applications & Promotion | Production of Ready Mixed

Concrete mixed in the yard. The drum is turned at high speed or 12-15 rpm for 50 revolutions. This allows a quick check of the batch. The concrete is then agitated slowly while driving to the job site. Concrete mixed in transit. The drum is turned at medium speed or about 8 rpm for 70 revolutions while driving to the job site.

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Notes | AboutCivil.Org

2019/10/01 · Civil Engineering Free Notes Online Civil Engineering Free Notes Online for B.S / B. Sc and M.S / M. Sc students and professionals. Free Download Class Notes, Lectures, Presentations, Assignments and Past Papers.

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5 Methods To Avoid Concrete Cracking

2017/02/12 · Concrete is hard and stiff material which may crack due to several reasons. Cracking concrete might result into a huge issue on site. So in every step of the way from batching to final casting on site or even the

Modifications to ACI 301 - American Concrete Institute

specification for structural concrete This is the second of three articles discussing ACI 301-10, “Specifications for Structural Concrete.” The first article summarized the major modifications to ACI 301, including additional chapters on industrial floor slabs, tilt-up construction, precast concrete, and architectural precast concrete.

Weigh Batching vs Volume Batching

Batching by volume achieved by using a constructed gauge boxes (Farmas) for proportioning the materials according to various mix proportions and based on the quantity of material needed per batch. In small works gamellas are also used for batching. But it is not recommended for batching of concrete. 03

Batch vs. Continuous Mixing

Mixing operations are either Batch type of Continuous. The preference of batch or continuous mixing is influenced by factors like the quantity of material to be blended, required degree of product homogeneity, pre-mixing and post mixing operations. This article explains the difference between batch mixing and continuous mixing. Batch mixing operation is discussed in details. The applications ...


6. Calculate the absolute volumes. For one cubic yard of air-entrained concrete, the volume of the air can be determined by simply multiplying the air content by 27. For this mixture, the air content from Step 1 above is 5 percent; therefore, the volume of air is 0.05 x 27 = 1.35 cubic feet.

Batching, Mixing, Transporting, and Handling Concrete, Chapter 10

by either volume or mass. Volumetric batching (ASTM C 685 or AASHTO M 241) is used for concrete mixed in con-tinuous mixers. Specifications generally require that materials be measured for individual batches within the following CHAPTER 10 Batching, Mixing, Transporting, and Handling Concrete percentages of accuracy: cementitious material ±1%,

What is a batching plant?

Jul 12, 2014 · A Concrete Batching Plant is a machine to manufacture Concrete from its ingredients viz Cement, Crushed Stone, Sand, Water and Admixture Chemicals. Sometimes additives like GGBS (Ground granulated blast Furnace Slag), Fly Ash or Micro-silica are a...

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Nominal Mix and Design Mix of Concrete: Know the Difference

M 20 is identified as the concrete grade in which, M denotes the Mix and 20 denotes the compressive strength of concrete cube after 28 days of curing in N/mm 2. There are various grades of concrete that can be used like M10, M15, M20, M25, M30, etc. Also Read: What do you mean by Batching of Concrete?

Acceptance testing and criteria for ready mixed concrete in

1 Acceptance testing and criteria for ready mixed concrete in Hong Kong Albert K.H. Kwan and Isaac S.K. Ling . Department of Civil Engineering


CONCRETE MIX DESIGN CONCEPT Definition: Mix design can be defined as the process of selecting suitable ingredients of concrete and determining their relative proportions with the object of producing concrete of certain minimum strength and durability as economically as possible.

CONCRETE BASICS A Guide to Concrete Practice

Concrete Basicsaims to provide a clear, concise explanation of all aspects of making quality concrete; from the Materials and Properties involved through Planning, Preparation, Finishing and Curing. Concrete Basicsaddresses the needs of unskilled and semi-skilled persons undertaking general concreting projects including home and handyman projects.

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Creep in Concrete, Factors affecting Creep & Effects of

Creep Definition. Concrete creep is defined as: deformation of structure under sustained load. Basically, long term pressure or stress on concrete can make it change shape. This deformation usually occurs in the direction the force is being applied. Like a concrete column getting more compressed, or a beam bending.

United States Environmental Protection Agency General Permit

1. Concrete Batch Plant Source Category Definition A concrete batch plant is an operation that combines various ingredients to form concrete. Some of these inputs include sand, water, aggregate (rocks, gravel, etc.), fly ash, potash, and cement. There are two types of concrete batch plants: ready mix plants and central mix plants.

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IS 4926 (2003): Code of Practice Ready-Mixed Concrete

3.4 Concrete — A mixture of aggregate, cement and water with or without admixtures and/or additions and including entrapped or entrained air, for all uses but excluding all mortars other than for use as floor or roof screeds. 3.5 Density of Fresh Concrete—Mass of a quantity of compacted fresh concrete divided by its volume,

CM 2103 Asphalt/Concrete Flashcards

Start studying CM 2103 Asphalt/Concrete. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

CIP 8 - National Ready Mixed Concrete Association

mixed concrete is sold on the basis of the volume of fresh, unhardened concrete-in cubic yards (yd 3) or cu-bic meters (m3) as discharged from a truck mixer. The basis for calculating the volume is described in the ASTM C 94, Specification for Ready Mixed Con-crete. The volume of freshly mixed and unhardened concrete in a given batch is ...

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