CALL US

+86 17838360708

Effects of Admixtures on the Properties of CCA Cement

Effects of Admixtures on the Properties of CCA Cement

Effects of Admixtures on the Properties of CCA Cement Concrete

The study investigated the effects of admixtures on the properties of corn cob ash (CCA) cement concrete. The workability and compressive strength of CCA cement concrete incorporated with accelerator, plasticizer and water reducing and retarding were carried out. The dosage of admixture

get price

Effects of Admixtures on the Properties of Corn Cob Ash ...

The study investigated the effects of admixtures on the properties of corn cob ash (CCA) cement concrete. The workability and compressive strength of CCA cement concrete incorporated with accelerator, plasticizer and water reducing and retarding were carried out.

get price

(PDF) Effects of Admixtures on the Properties of Corn Cob ...

The study investigated the effects of admixtures on the properties of corn cob ash (CCA) cement concrete. The workability and compressive strength of CCA cement concrete incorporated with ...

get price

[PDF] Effects of Admixtures on the Properties of Corn Cob ...

The study investigated the effects of admixtures on the properties of corn cob ash (CCA) cement concrete. The workability and compressive strength of CCA cement concrete incorporated with accelerator, plasticizer and water reducing and retarding were carried out. The dosage of admixture incorporated was: 0.124litre per 15.55kg of cementitious material based on the recommendation by

get price

Effects of Corn Cob Ash as Mineral Admixture on Mechanical ...

Dec 01, 2020  The natural mineral admixture obtained from the novel agricultural by-product, namely corn cob ash (CCA), is being utilized in cement manufacturing and concrete construction. The similarities in both physical and chemical properties of CCA were established when compared to the decade old agro-based mineral admixtures like rice husk ash (RHA ...

get price

The Effect of Admixtures on Concrete Properties

The Effect of Admixtures on Concrete Properties ... the properties of concrete are governed by the properties of the two phases and also by the presence of interface between them. In its hardened state concrete is a rock_ like materials with a high compressive strength, by virtue of the ease with which fresh concrete in its plastic state may ...

get price

Effect of Accelerating Admixture on Properties of Concrete

Effect of Accelerating Admixture on Properties of Concrete International organization of Scientific Research 50 P a g e increase in compressive strength was observed at 28 days with respect to reference mix. Compressive strength for concrete mix with 3% sodium nitrite by weight of cement was found to be less than that of reference mix. 1.2.2.

get price

Effects of Admixtures on the Properties of Corn Cob Ash ...

The study investigated the effects of admixtures on the properties of corn cob ash (CCA) cement concrete. The workability and compressive strength of CCA cement concrete incorporated with accelerator, plasticizer and water reducing and retarding were carried out. The dosage of admixture incorporated was: 0.124litre per 15.55kg of cementitious material based on the recommendation by

get price

The Effect of Admixtures on Concrete Properties

The Effect of Admixtures on Concrete Properties ... the properties of concrete are governed by the properties of the two phases and also by the presence of interface between them. In its hardened state concrete is a rock_ like materials with a high compressive strength, by virtue of the ease with which fresh concrete in its plastic state may ...

get price

Effects of different mineral admixtures on the properties ...

This paper presents a review of the properties of fresh concrete including workability, heat of hydration, setting time, bleeding, and reactivity by using mineral admixtures fly ash (FA), silica fume (SF), ground granulated blast furnace slag (GGBS), metakaolin (MK), and rice husk ash (RHA). Compari

get price

(PDF) Application of polymer admixtures to modify concrete ...

Application of polymer admixtures to modify concrete properties: Effects of polymer type and content ... concrete was observed by using CCA latex. ... The effects of water to cement ratio and the ...

get price

Short Communication Study on the Hydration Behavior of ...

In this work, the effects of mineral admixtures, corn cob ash (CCA) and waste plastic fiber (WPF) fillers, on mechanical properties and hydration of Portland cement (PC) were investigated. The partial replacement of both WPF and CCA in PC accelerates the setting process as compared to control PC sample without additives.

get price

Effect of Corrosion Inhibitor Admixtures on Properties of ...

Effect of Corrosion Inhibitor Admixtures on Properties of Fresh and Hardened Concrete Taha Ahmed1, Ibrahim Abdel-Latif2, Yehia Abdelzaher Ali3 ABSTRACT—The corrosion of the reinforcement concrete structures is a significant problem for concrete infrastructures which leads to forming

get price

Effect of Selected Admixtures on the Properties of ...

Jan 01, 2015  The article presents the results of laboratory research on the impact of polymer fibres and mineral dust on the properties of hardened concrete. Selected parameters such as compressive strength, flexural strength, water absorption and water capillary action were evaluated. The samples were cured at two temperatures: + 5° C and + 18° C.

get price

Admixtures for Concrete - Memphis

2. To achieve certain properties in concrete more effec-tively than by other means 3. To maintain the quality of concrete during the stages of mixing, transporting, placing, and curing in ad-verse weather conditions 4. To overcome certain emergencies during concreting operations CHAPTER 6 Admixtures for Concrete Fig. 6-1.

get price

Chemical Admixtures - Portland Cement Association

Accelerating admixtures are especially useful for modifying the properties of concrete in cold weather. Superplasticizers , also known as plasticizers or high-range water reducers (HRWR), reduce water content by 12 to 30 percent and can be added to concrete with a low-to-normal slump and water-cement ratio to make high-slump flowing concrete.

get price

Effects of Corn Cob Ash as Mineral Admixture on Mechanical ...

The natural mineral admixture obtained from the novel agricultural by-product, namely corn cob ash (CCA), is being utilized in cement manufacturing and concrete construction. The similarities in both physical and chemical properties of CCA were established when compared to the decade old agro-based mineral admixtures like rice husk ash (RHA ...

get price

Strength and Workability Improvement Potential of ...

CCA and cement. Both the Unconfined Compressive Strength (UCS) and California Bearing Ratio (CBR) of the soil increased with increasing percentage of cement and CCA. Based on the results of this study, corn cob ash (CCA) cannot be used as a stand-alone stabilizer for this lateritic soil but with a more potent stabilizer for clay soil such as lime.

get price

(PDF) The effect of mineral admixtures on the properties ...

In this study the performance concrete involves appropriate selection and effect of mineral admixtures on the short- and long-term proportioning of the constituents to produce a com- properties of high-performance concrete was investi- posite mainly characterised by its low porosity and fine gated.

get price

Self-Compacting Concrete: Strength Evaluation of Corn Cob ...

chemical admixtures is inevitable in achieving good rheological properties of SCC [8]. Corn-cob ash has been proven to be a good substitute of cement by different researchers up to a percentage of 10% [1]; while [19] investigated effects of admixtures on the properties of corn cob ash cement concrete and

get price

Influence of Water-Reducing Admixtures on Properties of ...

Relative effects of various admixtures on a portland cement are illustrated, and influences of specific admixtures on different cements are also shown. Effects of different superwater-reducing admixtures and combinations of ordinary and superwater-reducing admixtures are compared.

get price

Effect of Selected Admixtures on the Properties of ...

Jan 01, 2015  The article presents the results of laboratory research on the impact of polymer fibres and mineral dust on the properties of hardened concrete. Selected parameters such as compressive strength, flexural strength, water absorption and water capillary action were evaluated. The samples were cured at two temperatures: + 5° C and + 18° C.

get price

Effect of Usage of Admixture in Concrete

The use of admixtures offers certain beneficial effects to concrete like improved workability, acceleration or retardation of setting time, reduce water cement ratio, and so on. There are two basic types of admixtures available: chemical mineral. Admixtures like flyash, silicate fume, slag comes in the category of mineral admixtures.

get price

Strength and Workability Improvement Potential of ...

CCA and cement. Both the Unconfined Compressive Strength (UCS) and California Bearing Ratio (CBR) of the soil increased with increasing percentage of cement and CCA. Based on the results of this study, corn cob ash (CCA) cannot be used as a stand-alone stabilizer for this lateritic soil but with a more potent stabilizer for clay soil such as lime.

get price

Effect of Admixtures, Chlorides, and Moisture on ...

A coaxial transmission line developed at Virginia Tech was used to study the effect of moisture, type of aggregate, water/cement ratio, curing period, admixture type (microsilica, superplasticizer, and shrinkage admixture), and chloride content on the dielectric properties of PCC.

get price

Effect of admixtures on properties of alkali-activated ...

Sep 01, 2000  Admixtures used for ordinary portland cement (OPC) were tested to improve these properties of AAS concrete. Superplasticiser based on modified naphthalene formaldehyde polymers (S), air-entraining agent (AEA), water-reducing (WRRe), shrinkage-reducing (SHR) admixtures at dosages of 6–10 ml/kg, and gypsum (G) (6% of slag weight) were used.

get price

Effects of Different Mineral Admixtures on the Properties ...

Nevertheless, effect of mineral admixtures on the properties of fresh concrete is very important as these properties may affect the durability and mechanical properties of concrete. Comparative studies have been done such as the effect of blast furnace slag and fly ash on the hydration of fresh cement

get price

Effects of Superplasticizing Admixture on Properties of ...

【Abstract】 In recent decades, tremendous success has achieved in the advancement of chemical admixtures for Portland cement concrete. The effect of superplasticizer (SP) on properties of fresh and hardened concrete has studied; the properties of concrete inspected are compressive strength and slump test, hence, an experimental investigation conducted to determine the optimum dosage for the ...

get price

Cement, Concrete, and Aggregates Index to Volume 11 1989

Effect of Different Admixtures on the Strength of Sulphur Concrete (Czar- necki and Gillot), Winter, 109. Aggregate NA2SO4 Soundness Test Evaluation (Shef- tick), Summer, 73. Drying Shrinkage of Glass Fiber Rein- ... Early age concrete: Properties of Concrete at an Early Age (Carino, Jennings, and

get price

Cement, Concrete, and Aggregates Index to Volume 7 1985

Admixtures Improved utilization of fly ash in concrete ... Aggregate cement ratio: Effect of rheological properties of cement pastes on workability of mortars (Atzeni, Massidda, and Sanna), Winter, 78 Aggregates Durability of concrete (Rodway), Summer, 43 Trade-off of gradation and cost require- ...

get price

Cement, Concrete, and Aggregates Index to Volume 2 1980

cement properties through the use of hot- pressing (Gouda and Roy), Winter, 78 Water-reduclng agents: Influence of water- reducing admixtures on properties of ce- ment paste--a miniature slump test (Kan- tro), Winter, 95 Whiting, D.: Effect of mixing temperature on slump loss and setting time of concrete

get price

EFFECTS OF PERMEABILITY REDUCING ADMIXTURE ON THE ...

Aug 08, 2021  EFFECTS OF PERMEABILITY REDUCING ADMIXTURE ON THE PROPERTIES OF BINARY CEMENTITIOUS MATRIX CONCRETE. Abstract . Conventional concrete is porous and the network of pores allow the passage of harmful substances through the concrete internal structure thereby causing damage to the internal structure of the concrete and which resulted in consequential loss of concrete

get price

Effects of admixture type and dosage on microstructural ...

Sep 10, 2011  Effects of admixture type and dosage have been investigated in the scope of this study. The influence of incorporation of chemical admixtures at different dosages on the development of pore structure of cement mortars has also been investigated. A delay on the development rate of strength by incorporation of chemical admixtures at early ages has been determined. The highest strength values ...

get price

Comparative Study on the Effects of Various Modified ...

This study carried out tensile tests at definite elongation, tensile and shear tests on 4 admixture-modified styrene-acrylic emulsion-based cement composites (SECCs), and measured the strength, deformation, and energy consumption indexes of test specimens, so as to investigate the influences of coalescing agent, plasticizer, silane coupling agent, and nanometer aluminium oxide on the bond ...

get price

Application of FOSM and Chebyshev’s Theorem Concept to ...

In the present study the physical and mechanical properties of Corn Cob Ash (CCA) embedded cement concrete of mix proportions 1:1.6:2.6 and water-cement ratios of 0.45 were examined and compared with conventional cement concrete. A total of 96 concrete cubes of size 150 × 150 × 150 mm³ with different percentages by volume of CCA to ordinary Portland cement of grade 30Mpa in the order

get price