ep0789645a4 method and apparatus for mixing concrete

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EP0789645A4 - Method and apparatus for mixing concrete ...

EP0789645A4 EP96910517A EP96910517A EP0789645A4 EP 0789645 A4 EP0789645 A4 EP 0789645A4 EP 96910517 A EP96910517 A EP 96910517A EP 96910517 A EP96910517 A EP 96910517A EP 0789645 A4 EP0789645 A4 EP 0789645A4 Authority EP European Patent Office Prior art keywords mixing concrete concrete mixing Prior art date 1995-03-14 Legal status (The legal status is

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Method and apparatus for mixing concrete with controlled ...

An apparatus for making concrete is disclosed. The apparatus includes one or more measurement devices that is used to provide controlled quantities of at least cement and sand; a high intensity mixer that receives the controlled quantities of the cement and sand, mixes the controlled quantities of the cement and sand to produce grout, and outputs a flow of grout; and a controller coupled to ...

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Method and apparatus for mixing concrete in a concrete ...

A method and apparatus for mixing concrete in a concrete delivery mixing truck is provided which can yield a mix with an approximate required slump. This is achieved by monitoring the torque loading on hydraulic drive which rotates a mixing barrel and noting an anticipated minimum torque loading which, in turn, approximates to a required slump ...

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US5713663A - Method and apparatus for mixing concrete in

A method and apparatus for mixing concrete in a concrete delivery mixing truck is provided which can yield a mix with an approximate required slump. This is achieved by monitoring the torque loading on hydraulic drive which rotates a mixing barrel and noting an anticipated minimum torque loading which, in turn, approximates to a required slump value.

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METHOD AND APPARATUS FOR MIXING AND TRANSPORTING CONCRETE ...

What is claimed is 1. A method for transporting and mixing concrete comprising introducing into a mixing drum of a concrete mixing truck a first batch of concrete ingredients minus the cement ingredient of the first batch, introducing the cement ingredient of the first batch and ingredients for a second batch of concrete into separate containers on a wheeled trailer adapted to be drawn behind ...

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Apparatus and method for mixing concrete - The Vince

An apparatus and method of mixing concrete include a horizontally cylindrical mixing drum being loaded with concrete ingredients, agitating the ingredients by way of mixing elements rotating about a horizontal axis centrally located with respect to the mixing drum, rotating the mixing drum about the axis, such that an opening in the mixing drum is revolved to a horizontal elevation below the ...

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US4427610A - Method and apparatus for curing concrete ...

A method and apparatus for rapidly manufacturing concrete or like poducts having an advanced state of cure by blending together a calcareous cementitious binder, aggregate, and water to form a mix, molding the mixture to have a predetermined shape and exposing the shape to an atmosphere in a chambr consisting essentially of carbon dioxide gas, wherein ultracold carbon dioxide gas is fed to ...

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Method and apparatus for casting concrete mix - ELEMATIC

2006-10-4  A method and an apparatus for casting thixotropic concrete mix substantially in a horizontal slipforming process, the concrete mix in said method being fed through a limited cross-section to form a concrete product of a desired form, whereby the concrete mix is fed to a space to be vibrated under pressure before it is led to the limited cross-section, the concrete mix being kept plastic in ...

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US7163334B2 - Method and apparatus for mixing fibers ...

A method of mixing including providing a slurry ( 26, 126 ) having a first fiber ( 14, 114 ) into a container ( 20, 120 ), introducing an agitation fluid ( 31, 138 ) into the slurry to cause a mixing motion ( 38, 138 ) within the slurry, and delivering a second fiber ( 16, 116 ) into the slurry, whereby the mixing motion mixes the first and second fibers to create a fiber mixture.

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Theory of Marshall Mix design, Apparatus ... - Cement Concrete

2021-8-16  Theory of Marshall Mix design, Apparatus and Uses. The test procedure is used in designing and evaluating bituminous paving mixes, and is widely applied in routine test programs for the paving jobs. The major features of Marshall method

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Theory of Marshall Mix design, Apparatus ... - Cement Concrete

2021-8-16  Theory of Marshall Mix design, Apparatus and Uses. The test procedure is used in designing and evaluating bituminous paving mixes, and is widely applied in routine test programs for the paving jobs. The major features of Marshall method of

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Concrete Mix Design: Proportioning - National Precast ...

2018-9-11  This method differs from the 1-2-4 method by using math to ensure a mix design provides the desired yield no matter what materials are used. Prior to continuing, it is a good idea to read American Concrete Institute 221R, “Guide for Use of Normal Weight and Heavyweight Aggregate in Concrete.”

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REQUIREMENTS FOR CONCRETE MIX DESIGN - The

🕑 Reading time: 1 minuteRequirements of concrete mix design should be known before calculations for concrete mix. Mix design is done in the laboratory and samples from each mix designed is tested for confirmation of result. But before the mix design process is started, the information about available materials, strength of concrete required, workability, site []

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Liv M. Haselbach Inventions, Patents and Patent ...

2016-4-26  Liv M. Haselbach has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO). Method and apparatus for carbon dioxide sequestration. Patent number: 10464234.

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Ultrasonic Mixing of Cement Paste For Concrete - Hielscher ...

The ultrasonic mixing of cement paste offers great benefits for precast molding, drycast and concrete plants. This includes: Shorter initial and final set time, lower dosage of superplasticizer, faster and more complete hydration as well as higher compressive strength. Traditional concrete mixing technologies, such as “on-road-mixing

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Cement and Mortar Testing Equipment Controls Group

Used for determining the expansion of cement. The mould consists of a spring tensioned.. MULTIPURPOSE 500-600 and 500-600/15 kN Cement Compression and Flexural Machines, Multipurpose Models. PILOT PRO Control System. PILOT PRO is the best choice for Qualtiy Control laboratories for routine failure tests.

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Concrete Mix Design Report - SlideShare

2015-10-2  Range of normal weight concrete is from 2,200 kg/m3 to 2,400 kg/m3 10. Always take 3 samples for each test. 11.Calculate the average of all 3 samples for accuracy. 12.Complete all the required necessary tests before you start Concrete Mix

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J-Ring Apparatus Controls Group

Description. Used for determining the passing ability (measured by the blocking step), the flow spread and t 500 flow time of the self compacting concrete as the concrete flows through the J-Ring. The apparatus consists of a stainless steel crown with 16 bars 18 mm dia. Weight approx.: 10 kg.

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Standard Practice for Making and Curing Concrete Test ...

2021-6-7  the acceptable tool is a scoop. For placing concrete in a beam mold, either a shovel or scoop is permitted. 5.8 Finishing Tools—a handheld float or a trowel. 5.9 Slump Apparatus—The apparatus for measurement of slump shall conform to the requirements of Test Method

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Concrete Batching, Mixing, Placing and Compaction of Concrete

2017-3-18  The mixing operation consists of rotation or stirring, the objective being to coat the surface the all aggregate particles with cement paste, and to blind all the ingredients of the concrete into a uniform mass; this uniformity must not be disturbed by the process of discharging from the mixer.

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Cement and Mortar Testing Equipment Controls Group

Used for determining the expansion of cement. The mould consists of a spring tensioned.. MULTIPURPOSE 500-600 and 500-600/15 kN Cement Compression and Flexural Machines, Multipurpose Models. PILOT PRO Control System. PILOT PRO is the best choice for Qualtiy Control laboratories for routine failure tests.

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What is Workability of Concrete? - Gilson Co.

Workability of Concrete is a broad and subjective term describing how easily freshly mixed concrete can be mixed, placed, consolidated, and finished with minimal loss of homogeneity. Workability is a property that directly impacts strength, quality, appearance, and

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J-Ring Apparatus Controls Group

Description. Used for determining the passing ability (measured by the blocking step), the flow spread and t 500 flow time of the self compacting concrete as the concrete flows through the J-Ring. The apparatus consists of a stainless steel crown with 16 bars 18 mm dia. Weight approx.: 10 kg.

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Concrete Mix Design: Types, Advantages Disadvantages

Concrete mix design is the method of finding the precise proportion of cement, sand and aggregates for concrete to achieve the target strength in structures, therefore concrete mix design can be stated as concrete mix = cement: sand: aggregates. Accurate concrete mix design makes concrete construction more economical.

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L-Box Apparatus Controls Group

Used for determining the passing ratio of self compacting concrete. The apparatus consists of a L shaped stainless steel frame, supplied complete with filling hopper. Overall dimensions: 700x200x600 mm. Weight approx.: 18 kg.

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Slump Test Experiment - Apparatus - Types - Procedure

2021-5-29  Mixing method include method for batching of concrete, mixing, and method of transportability. Admixtures – the amount of air content or usage of air-entraining agents. Temperature of concrete or aggregates; The efficiency of laboratory person in sampling of concrete and slump-test cone condition. Time lapsed after batching of concrete.

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MARSHALL MIX DESIGN METHOD FOR ASPHALTIC

2018-5-18  MARSHALL MIX DESIGN METHOD FOR ASPHALTIC CONCRETE WITH RECLAIMED ASPHALT PAVEMENT (RAP) (An Arizona Method) 1. SCOPE . 1.1 This method is used to design Asphaltic Concrete mixes with Reclaimed Asphalt Pavement (RAP) using 4-inch diameter Marshall apparatus. 1.2 This test method involves hazardous material, operations, and equipment.

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Influence of mixing protocol on fresh and hardened ...

2015-11-15  A concrete mixer as shown in Fig. 2 (also commonly called a cement mixer) is a device that homogeneously combines cement with aggregates such as sand or gravel and water. A typical concrete mixer uses a revolving drum to mix the components. Internal blades are arranged in such a manner to lift and tumble the ingredients and direct the concrete into the circulatory path.

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(PDF) Chapter 11 MARSHALL METHOD OF ASPHALT-CONCRETE MIX ...

Chapter 11 MARSHALL METHOD OF ASPHALT-CONCRETE MIX DESIGN 11.1 INTRODUCTION Bituminous mixes (some times called asphalt mixes) are used in the surface layer of road and airfield pavements. The mix is composed usually of aggregate and asphalt cements. Some types of bituminous mixes are also used in base coarse.

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IS 516 (1959): Method of Tests for Strength of Concrete

2018-2-1  IS:516-1959 Indian Standard METHODS OF TESTS FOR STRENGTH OF CONCRETE o. FOREWORD 0.1 This Indian Standard was adopted by the Indian Standards Institution on 10 November 1959, after the draft finalized by the Cement and Concrete Sectional Committee had been approved by the Building Division Council. 0.2 Testing plays an important role in controlling the quality of cement ...

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