effects of admixtures on the properties of cca cement

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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

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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.

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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 ...

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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

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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 ...

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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.

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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 ...

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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 ...

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Properties and Uses of Different Types of Concrete Admixtures

Apr 05, 2013  Table: Effect of Mineral Admixtures on Hardened Concrete. Quality Measure. Effect. Strength. Fly ash increases the ultimate strength but reduces rate of strength gain. Silica fume has less effect on rate of strength gain than pozzolans. Drying shrinkage and creep. Low concentrations usually have single effect.

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Types of Admixtures of Concrete Cement Chemical, Mineral

Mar 18, 2017  A material other than water, aggregates, or cement that is used as an ingredient of concrete or mortar to control setting and early hardening, workability, or to provide additional cementing properties. Admixtures of concrete are generally used to alter the properties of concrete (such as increased workability or reduced water content, acceleration or retardation of setting time, acceleration ...

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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

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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.

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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

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The Effect of Mix Design on the Properties of Sulfur Concrete

The deterioration is accompanied by a decrease in dynamic modulus of elasticity with time. The durability of sulfur concretes containing glycerin and crude oil admixtures was slightly improved, but expansions were still unacceptably high. Two silane admixtures significantly decreased the moisture expansions.

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Macro mechanical properties of self healing concrete with ...

Mar 01, 2019  Four stages of methodology adopted for studying the effects of self-healing of concrete samples: 1. Determination of mechanical properties of normal concrete and concrete with crystalline admixture (CA) at 28 days. 2. Creation of control damage in the specimens (a) Early age cracks (b) Structural cracks. 3. Exposure simulation. 4.

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Properties and Uses of Different Types of Concrete Admixtures

Table: Effect of Mineral Admixtures on Hardened Concrete. Quality Measure. Effect. Strength. Fly ash increases the ultimate strength but reduces rate of strength gain. Silica fume has less effect on rate of strength gain than pozzolans. Drying shrinkage and creep. Low concentrations usually have single effect.

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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.

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Effects of biological admixtures on hydration and ...

Feb 28, 2020  The present study investigated the effects of biological admixtures on hydration kinetics and mechanical properties of Portland cement paste. The biological admixtures consisted of nutrient, urea, calcium lactate, and ureolytic bacterium, and were added to the cement slurry during the mixing process in a solution form.

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Types of Admixtures of Concrete Cement Chemical, Mineral

Mar 18, 2017  A material other than water, aggregates, or cement that is used as an ingredient of concrete or mortar to control setting and early hardening, workability, or to provide additional cementing properties. Admixtures of concrete are generally used to alter the properties of concrete (such as increased workability or reduced water content, acceleration or retardation of setting time, acceleration ...

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IOSR Journal

Cement concrete with different concentration of admixtures were tested to deduce the admixture effect on concrete properties like consistency, workability and compressive strength. The results obtained, using both admixtures were compared using the F-statistics to check for significant difference between the concrete properties.

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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

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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.

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(PDF) IJCIET_09_12_104.pdf IAEME Publication - Academia

Disparity in the Characterization of corncob ash (CCA) as a pozzolanic material and scant literature pertaining to its microstructural characteristics motivated the objective of this research. The study intends to narrow the knowledge gap by

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Effect of Mineral Admixtures on Mechanical Properties of ...

This paper reports a part of an ongoing experimental laboratory investigation being carried out to evaluate the mechanical properties of concrete made with mineral admixtures and local Jordanian materials. Various percentages of Silica Fume (SF) and Fly Ash (FA) were added at different water/cementitious (w/cm) ratios. Concrete specimens were tested and compared with plain concrete specimens ...

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Effects of Admixtures On The Properties of Corn Cob Ash ...

Abstract 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.

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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 ...

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

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

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(PDF) Effect of mineral admixtures on the properties of ...

International Journal of Advanced Structures and Geotechnical Engineering ISSN 2319-5347, Vol. 02, No. 04, October 2013 Effect of mineral admixtures on the properties of mass concrete - A review MUHAMMAD EJAZ SHABAB, KHAN SHAHZADA, MUHAMMAD ASHRAF, MUHAMMAD FAHAD Department of Civil Engineering, University of Engineering Technology Peshawar, Pakistan Email:

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Effect of Admixture on Physical and Mechanical Properties ...

Jun 27, 2021  Effects of waste pet as coarse aggregate on the fresh and harden properties of concrete. Construction and Building Materials, 125, 946-951. Islam, M. J., Rahman, J., Nawshin, S., Islam, M. M. (2020). Comparative Study of Physical and Mechanical Properties of Machine and Manually Crushed Brick Aggregate Concrete.

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Cement Concrete Composites

admixtures on the properties and hydration process of UHPC. For the design of mortars and concretes, several mix design tools are in use. Based on the properties of multimodal, discretely sized particles, De Larrard and Sedran [36,37] postulated different approaches to design concrete

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15 Types of Admixtures Used in Concrete - The Constructor

Air entraining admixtures are one of the most important inventions in concrete technology. Their primary function is to increase the durability of concrete under freezing and thawing conditions. When added to concrete mix, these admixtures will form millions of non-coalescing air bubbles throughout the mix and improves the properties of concrete.

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Effects of Chemical Admixtures on the Working and ...

Jan 22, 2019  The effects of hydroxypropyl methyl cellulose ether, starch ether, bentonite, and redispersion emulsoid powder on the working and mechanical properties of fresh dry-mixed mortar were studied. The results show that hydroxypropyl methyl cellulose ether has the greatest impact on the consistency and water retention of ordinary dry-mixed mortar and that redispersion emulsoid powder

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CCA Concrete Kings - Construction Property News

Dec 31, 2015  It opened a subsidiary in Cambodia 14 years ago and joined CCA in 2012. Admixtures and additives for the concrete industry are among the main market segments for this world leading chemical producer. Concrete admixtures include water reducers, set retarders, accelerators, durability enhancers, mold release agents, curing compounds, and surface ...

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IOSR Journal

Cement concrete with different concentration of admixtures were tested to deduce the admixture effect on concrete properties like consistency, workability and compressive strength. The results obtained, using both admixtures were compared using the F-statistics to check for significant difference between the concrete properties.

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IOP Conference Series: Materials Science and Engineering ...

replacement of cement with CCA increased while the workability and density of concrete decreased as the percentage of CCA increased. ... Raheem et al. [4] studied the effects of admixtures on the properties of corn cob ash cement concrete. They opined in their results that the incorporation of ... Physical properties of cement, corn cob ash and ...

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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

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.

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