Mix Design for High-Strength Lightweight Concrete Using Fly Ash
The results of validation of the proposed mix design method with concrete mix with unit weight from 1300 to 1600 kg/m 3 confirm the followings: 1. Binder paste content affects the compressive strength of FAC-HSLWC. An optimal binder paste for each FAC-HSLWC mix can be obtained to give the maximum compressive strength.
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A mix design method of fly ash geopolymer concrete …
A mix design method of fly ash geopolymer concrete based on factors analysis. ... the mix proportion of the geopolymer binder also includes fly ash content and alkaline solution to fly ash ratio (AS/FA ratio). There have been many studies describing the effect of fly ash content [14], [15] and AS/FA ratio [11], [12], [13], [16] on the ...
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Concrete Mix Design M30 Grade with Flyash as Partial
F'ck = fck + 1.65 x S Where, F'ck = Target average compressive strength at 28 days Fck = Characteristic compressive strength at 28 days S = Assumed standard deviation in N/mm2 = 5 (as per table -1 of IS 10262- 2009) = 30 + 1.65 x 5.0 = 38.25 N/mm2 Note : Under control conditions if Target average compressive stre…See more on happho
A detailed procedure of mix design for fly ash based …
In 2008, Lloyd and Rangan (Lloyd and Rangan 2010; Rangan 2008a; Rangan 2008b) proposed a method for a mix design of fly ash-based geopolymer concrete but it did not discuss how to …
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(PDF) Design Method for Low-Carbon Fly Ash Concrete …
The basic steps of this method are as follows: First, based on the experimental results, the strength development formula of fly ash concrete using different mix ratios and different aging periods ...
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IS 10262 (2009): Guidelines for concrete mix design …
e) A new illustrative example ofconcrete mix proportioning using fly ash as one of the ingredients has been added. f) Considering that the air content in normal (non-airentrained) concrete is not ofmuch significance in mix proportioning procedure and is also not a part ofIS 456 : 2000, the consideration ofair content has been deleted.
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Concrete Mix Design with Fly Ash and Superplasticizer
For obtaining the best result the fly ash concrete should be prepared by the following mixing method: About 3/4th quantity of the mixing water be taken in the concrete mixer. Weighted …
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Mix design procedure for geopolymer concrete with fly ash …
Correlation between the alkaline activator solution to binder ratios and 28 day compressive strength has been investigated to propose conceptual mix design method for GPC in a rational way. Mix design is proposed for various AAS/FA ratios ranging from 0.4 to 0.8, and the 28 day compressive strength as high as 54 MPa has been noticed.
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Mix design of fly ash based alkali activated concrete
As seen from the database in Table 3.1, four variables have been identified as the dependent factors for the compressive strength of alkali activated concrete, (Na 2 SiO 3 /NaOH ratio, activator/fly ash ratio, water/solid ratio, and NaOH molarity). Contour plots are developed as illustrated in Fig. 3.2A-F to demonstrate this inter correlation. It can be seen from these plots …
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A strength-based mix design method of fly ash concrete with
To obtain an appropriate reference for the mix design of FA concretes with the addition of entrained water through SAP, a method for estimating the minimum entrained water …
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Preparation and performance optimization of fly ash- slag
The alkali solution is composed of sodium silicate and sodium hydroxide. The mixing ratio of sodium hydroxide to sodium silicate is 0.5. The sodium silicate modulus (MS) is 3.13 (MS = m (SiO2) / m (Na2O), Na2O = 8.83 % (mass percentage), SiO2 = 27.64 % (mass percentage)). ... A mix design method of fly ash geopolymer concrete based on factors ...
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DOE Methods of Concrete Mix Design | Concrete Technology
From table 20.46 the approximate compressive strength of concrete made with free water/cement ratio 0.5 is obtained. From table 20.46, find out the 28 days strength for the type of cement and type of C.A. ... Concrete Mix Design by DOE Method using Fly Ash: The use of fly ash as a part substitute of cement is fast gaining popularity ...
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Mix proportions and mechanical properties of concrete containing …
A rational mix design method was developed for concrete with 20–80% fly ash replacement for cement. Tests were performed for fresh and hardened concrete properties. ... In addition, the Poisson's ratio of all fly-ash concrete mixtures randomly falls in the range of 0.122–0.181, which is comparable to the value of normal concrete. 6.
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Mix Design of Fly Ash Based Geopolymer …
For the selection of suitable ingredients of geopolymer concrete to achieve desire strength at required workability, an experimental investigation has been carried out for the gradation of...
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A mix design methodology of blast furnace slag and fly ash …
Phoo-ngernkham et al. studied the effect of NaOH concentration (from 5 M to 15 M), alkaline activator solution to fly ash ratio (from 0.45 to 0.60), the coarse aggregate size ... More specifically, for putting forward a practical mix design method of PC concrete regarding slump, a simplified correlation between slump, water content, ...
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Mix Design of Fly Ash and GGBS based Geopolymer Concrete …
The mix design of GPC is the optimization of a group of various parameters, such as the activator to binder ratio, aggregate to binder ratio, coarse aggregate to fine aggregate ratio, activator concentration, and amount of binder content. ... "Development of mix design method for geopolymer concrete," Advances in concrete construction, vol. 5 ...
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A mix design procedure for fly ash and ground granulated blast furnace
Further, the ready-mix concrete industry also implements the same percentages in developing the concretes, and the same has been adopted in the present study. RACs with and without fly ash and GGBS for different w/b ratios such as 0.25, 0.35, 0.45, 0.55, 0.65, and 0.75 were designed as per the mix methodology explained above.
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MIX Design of Fly-Ash Based Geopolymer Concrete
So, in the present investigation, geopolymer concrete mix design procedure is proposed on the basis of quantity and fineness of fly ash to achieve desired strength quantity of water to achieve required degree of workability grading of fine aggregate and fineness-to-total aggregate ratio by International Journal of Scientific ...
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Design Method for Low-Carbon Fly Ash Concrete …
Buildings 2024, 14, 1334 2 of 15 material properties, curing conditions, and mix ratio on the early and late strengths of fly ash concrete [ ]. Krishnya et al. simulated the generation and ...
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A DETAILED PROCEDURE OF MIX DESIGN FOR FLY ASH BASED GEOPOLYMER CONCRETE
Flow chart for mix design procedure Figure 2. Strength vs alkaline liquid-to-fly ash ratio A design graph with respect to the two major variables that have a significant effect on the water-to-geopolymer solids ratios (W/GS) was prepared. These two variables are the alkaline liquid-to-fly ash ratio and the amount of fly ash in the mixture.
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Comparative analysis of mix design method of concrete …
In order to mix Fly Ash with concrete optimum quantity of Fly Ash was to be determined. The optimum quantity of fly ash was based on compressive testing of fly ash concret cubes at 5%, …
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A mix design procedure for geopolymer concrete with fly ash …
Compressive strengths ranging from 23 to 53 MPa were obtained by using the proposed mix design methodology. D Hence, the proposed mix design method can be employed to design the fly ash based GPC TE efficiently and effectively for regular structural works. EP 6. Conclusions A rational mix design approach for fly ash based GPC has been introduced.
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Concrete Mix Design with Fly Ash and …
A mix is to be designed for characteristic strength of 50 N/mm 2 at 28 days having target strength of 62 N/mm 2 at 28 days. 30% of fly ash is to be included by weight of cementitious material. Maximum w/c ratio or w/c + f.a. ratio = 0.4, …
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Novel Analytical Method for Mix Design and …
It was possible to obtain a 20−35 MPa concrete using an activator/fly ash ratio between 0.3 to 0.6, ... the experimental results and the compressive strengths calculated from contour plots validated the developed …
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Design Method for Low-Carbon Fly Ash Concrete …
The result of the optimized design is that the masses of cement and fly ash are 193.82 and 236.89 kg/m 3, respectively; the water–binder ratio of Mix 2 is 0.39 (which is located in the studied range of the water–binder ratio between 0.3 and 0.5), and the mass ratio of the fly ash to binder is 0.55 (reaching the upper limit of the fly ash ...
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Mix Design for High-Strength Lightweight Concrete …
Lightweight Concrete Using Fly Ash Cenospheres Hung Viet Le, Thanh Trung Le, and Tuan Van Nguyen ... Another mix design method for self-compacting LWAC proposed by Li et al. [13] was also based on the optimization of the packing density of aggregates ... ratio for the mixture to achieve the required workability and unit weight of ULCC. ...
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Novel Analytical Method for Mix Design and …
Despite extensive in-depth research into high calcium fly ash geopolymer concretes and a number of proposed methods to calculate the mix proportions, no universally applicable method to determine ...
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(PDF) A mix design method of fly ash …
A mix design method of fly ash geopolymer concrete based on factors analysis ... This research proposed a mix design method for low calcium fly ash geopolymer concrete (FAGC) by finding the key ...
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A mix design procedure for geopolymer concrete with fly ash
Correlation between the alkaline activator solution to binder ratios and 28 day compressive strength has been investigated to propose conceptual mix design method for GPC in a rational way. Mix design is proposed for various AAS/FA ratios ranging from 0.4 to 0.8, and the 28 day compressive strength as high as 54 MPa has been noticed. The design ...
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Optimization of fly ash concrete mix
Good compressive strength of concrete having a large volume of class F fly ash can be achieved by maintaining a cement density of 400 kg per cubic meters with water cement ratio (W/C) in the range of 0.35–0.45 [2].
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A Mix Design Procedure for Alkali‐Activated High‐Calcium Fly Ash …
In this paper, we propose a novel mix design methodology for alkali-activated high-calcium fly ash concrete (AAHFAC) in a rational approach. It should be noted that the method is easy to use because it is based on the ACI 211.4R-93 [] with some modification.The parametric studies are composed of different NaOH concentrations, alkaline activator solution- (AAS-) to …
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