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ACI METHOD OF CONCRETE MIX DESIGN

ACI method of concrete mix design is based on the estimated weight of the concrete per unit volume. This method takes into consideration the requirements for consistency, workability, strength and durability. Following are the steps of ACI Method of Concrete ...

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HOW COARSE AGGREGATES AFFECT MIX DESIGN?

Coarse Aggregate Properties affecting Mix Design Strength Maximum size of coarse aggregate: Maximum size of aggregate affects the workability and strength of concrete. It also influences the water demand for getting a certain workability and fine aggregate content required for achieving a ...

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EFFECT OF AIR ENTRAINED CONCRETE ON CONCRETE STRENGTH

Air entrained concrete has effects on compressive strength of concrete and its workability. Air entrained concrete increases the workability of concrete without much increase in water-cement ratio. Compressive strength of concrete is inversely proportional to workability of concrete. When ...

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ACCEPTANCE CRITERIA FOR DESIGN MIX CONCRETE

Design Mix Concrete Acceptance Criteria: I. The concrete shall be deemed to comply with the strength requirements if: a) every sample has a test strength not less than the characteristic value;or b) The strength of one or more samples though less than the ...

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FINENESS MODULUS METHOD OF CONCRETE MIX DESIGN

Fineness Modulus Method of Concrete Mix Design The index number, which describes the relative sizes of coarse and fine aggregates, is called as fineness modulus (FM). Fineness modulus is determined separately by sieving coarse and fine aggregates through the following set ...

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MIX DESIGN OF ROLLER COMPACTED CONCRETE

Mix design proportioning methods for Roller Compacted Concrete RCC: Mix design proportioning methods for no slump concrete applicable for Roller Compacted Concrete. Materials Used in RCC mix design a) Cementitious materials: Cement content is generally low (typically 70 to 130 kg/m3). Any kind of ...

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METHODS OF PROPORTIONING CONCRETE

The process of relative proportions of cement, sand, coarse aggregate and water, so as to obtain a concrete of desired quality is known as the proportioning of concrete. The proportions of coarse aggregate, cement and water should be such that the ...

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DESIGNED CONCRETE SPECIFICATIONS

Designed concrete are those for which the producer is responsible for selecting the mix proportions to meet the required performance as communicated by the specifier. Therefore it is essential that the specifier, in compiling the specification, takes account of:The uses ...

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