Studies on the chloride permeability of fly ash and silica
Nov 01 2008 · The assessment of ternary blended concrete in chloride environment was carried out based on the results obtained from macrocell corrosion study amount of free chloride content and chloride ion penetration depth. Rapid chloride penetration test This test was conducted as per ASTM C. The RCPT experimental setup is shown in Figure. 1.
Get Price
ReferencesDurability Design of Concrete Structures
Aug 26 2016 · Shareable Link. Use the link below to share a full-text version of this article with your friends and colleagues. Learn more.
Get Price
A Study on Suitability of EAF Oxidizing Slag in Concrete
The compressive test is the most important test that can be used to assure the engineering quality in the application of building material. In M20 grade at the age of 7 days the compressive strength of Mix C progressively increased by 8.69 and 47 when compared to Mix A and Mix B respectively. But the strength development of Mix A increased
Get Price
Compressive Strength and Chloride Permeability of High
The compressive strength of G4FS HSC is besides outstandingly high at early age compare with other HSC but the compressive strength of G4F HSC which is vary according to curing temperature and condition most high at the age after 7 days. Total passed charge of HSC get larger in the order G4FS
Studies on the chloride permeability of fly ash and silica
Nov 01 2008 · The assessment of ternary blended concrete in chloride environment was carried out based on the results obtained from macrocell corrosion study amount of free chloride content and chloride ion penetration depth. Rapid chloride penetration test This test was conducted as per ASTM C. The RCPT experimental setup is shown in Figure. 1.
Get PriceCompressive Strength and Rapid Chloride Permeability of
Compressive Strength and Rapid Chloride Permeability of Concretes with Ground Fly Ash and Slag. Concretes with binary and ternary blends of portland cement finely ground fly ash and finely ground granulated blast furnace slag were produced to investigate their effects on compressive strength and rapid chloride permeability.
Get Price
Cement Science and Concrete Technology
Early-age compressive strength of concrete with blast-furnace slag cement type A was improved by increasing C 3 S content more than 65 especially at low temperature. Effects of C 3 S content of blast-furnace slag cement type A on the rate of accelerated carbonation rate and shrinkage under drying condition were small and these properties
Get Price
Compressive Strength and Rapid Chloride Permeability of
Chloride permeability of concrete with binary and ternary blends containing GGBFS was investigated and found that concrete with GGBFS exhibit lower charge passed and higher compressive strength
Get PriceThe Rapid Chloride Permeability Test and Its Correlation
The procedure outlined in ASTM C1202 is based on the AASHTO Test Method T277 "Rapid Determination of the Chloride Permeability of Concrete " initially developed in 1981. Chloride penetration in both ASTM C1202 and AASHTO T277 is expressed as charge passed or coulombs.
Get PriceAn Artificial Neural Networks Model for Predicting
Sep 10 2013 · Evaluation of rapid chloride permeability test (RCPT) results for concrete containing mineral admixtures. ACI Materials Journal 97(2) 221–232. Google Scholar Yeh I. C. (1999). Design of high-performance concrete mixture using neural networks and nonlinear programming. Journal of Computing in Civil Engineering 13(1) 36–42.
Get Price
Non destructive testing for determining the strength of
The compressive strength can be read directly from the graph having rebound number on the x-axis and compressive strength on the y-axis. The rebound scale and graph are graduated on the body of rebound hammer. The rebound scale and graph are shown in figure 2. Ultrasonic Pulse Velocity Test
Get Price
Materials Free Full-Text Pozzolanic Reactivity of
At 90 days the compressive strength of 5 SF 10 SF and 15 SF concretes is 98.56 109.69 and 103.22 MPa respectively. The highest compressive strength value appears on the 10 SF concrete which was 119 of the control concrete at the age of 90 days.
Get Price
Durability and Shrinkage Characteristics of Self
2.4.1. Rapid Chloride Permeability Test (RCPT) To assess the chloride penetrability of concrete mixture presented in this study a very popular and well-known experimental procedure was adopted. The rapid chloride permeability test (RCPT) is a standardized ASTM test that exists for 24 years . The experiment assesses concrete s ability to
Get Price
Concept of Evaluation of Mineral Additives Effect on
3.8.4. Prediction of Permeability of CC . Permeability relates to both quality and quantity of the cement paste. The CC with A and B type additives would have a lower permeability due to the number of "flow obstacles" (in A case) and due to a lower real w/c ratio than in the reference paste (B case) .
Get Price
Materials Free Full-Text Green Concrete for a Circular
Their results have shown that the compressive strength was enhanced with the increased content of MK before and after the exposure to elevated temperatures. At 800 to 1000 °C the residual compressive strength for pastes with 2 4 6 8 and 10 of MK were 10 15 20 27 and 35 higher respectively than the control mix with 0 MK.
Get Price
Pozzolanic Reactivity of Silica Fume and Ground Rice Husk
The highest compressive strength value appears on the 10 SF concrete which was 119 of the control concrete at the age of 90 days. Compressive strength of 5 FRHA 10 FRHA and 15 FRHA concretes at 28 days is 93.62 101.97 and 97 MPa or 108 117 and
Get Price
A Study on Suitability of EAF Oxidizing Slag in Concrete
The compressive test is the most important test that can be used to assure the engineering quality in the application of building material. In M20 grade at the age of 7 days the compressive strength of Mix C progressively increased by 8.69 and 47 when compared to Mix A and Mix B respectively. But the strength development of Mix A increased
Get Price1. Introduction
The resistance of concrete to salt attack was assessed by Rapid Chloride Permeability Test (RCPT) at 28 and 90 days of water curing in conformity with ASTM C-1202 49 . Three specimens of 100 mm in diameter and 50 mm in thickness which had been conditioned according to the standard were subjected to a 60-V potential for 6 h.
Get Price
Effect of curing conditions during the first 24 hours
Effects of different curing methods on compressive strength flexural strength water absorption rate and porosity of mortar mixtures are investigated by Aparicio Martinez-Ramirez Ranz Fuenta Hernandez (2016). Fly ash blast furnace slag and rice husk ash instead of portland cement at 50 ratio (by mass) were used as binders.
Get PriceInnovative concretes for low-carbon constructions a
The rest of the article is organized as follows. Section 2 analyzes special concretes whose environmental impact is mitigated by enhancing their physical and mechanical properties. These include (i) high strength concretes (HSCs) that allow to reduce the overall structural volume to withstand the loads (ii) concretes with enhanced durability (ii) lightweight concretes (LWCs) and other
Get Price
Durability and Shrinkage Characteristics of Self
2.4.1. Rapid Chloride Permeability Test (RCPT) To assess the chloride penetrability of concrete mixture presented in this study a very popular and well-known experimental procedure was adopted. The rapid chloride permeability test (RCPT) is a standardized ASTM test that exists for 24 years . The experiment assesses concrete s ability to
Get Price
Effects of nano-SiO2 and nano-Al2O3 on mechanical and
Furthermore the charge passing through the sample in rapid chloride permeability test and chloride ion transport coefficients by adding 5 NS were decreased 25 26 . This was mainly due to the refinement of pore structure the increase of pore tortuosity and the blocking of more transmission channels leading to the decrease of permeability.
Get PriceChloride permeability of concrete mixed with activity
Feb 28 2019 · Chloride permeability which results in the steel corrosion of reinforced concrete is the most important indicator of concrete durability and the related studies found that the chloride permeability was greatly impacted by the concrete properties and water content etc. Du et al. and Zhang et al. further found that the Nano modification
Get Price
Effect of natural pozzolans on porosity and pore
Compressive strength and chloride ion permeability tests are conducted at 28 56 and 84 days of-age. Capillary absorption and water permeability tests were conducted at 28 and 84 days of age as well as for 33 Poz05 concrete at 56 days of age. 3. Results and discussion. 3.1 Compressive strength
Get Price
A Review of the Engineering Properties of Metakaolin Based
This reduces the effect of permeability in concrete which makes it more difficult for the chloride ions present in seawater to penetrate the cover concrete and corrode the steel reinforcement. According to ASTM 29 the summation of the three main oxide constituents namely SiO 2 Al 2 O 3 and Fe 2 O 3 must be a minimum of 50 for a
Get Price
(PDF) Performance of glass-powder concrete in field
Compressive strength (fc) tures were 42 and 44 MPa both concretes measured 49 MPa at The compressive strength (fc) was determined according to 91 days. ASTM C39 32 . Fig. 4 provides the results obtained from the vari- The obtained 28-day fc value for the CSD-Ext.Sdk.Ref was the ous field sites for the different curing times.
Get Price
Cement Science and Concrete Technology
Concerning compressive strength of mortar in case of about 4 000cm 2 /g of slag s specific surface area strength was improved by addition of calcium hydroxide powder because of the acceleration of blast-furnace slag. Considering the result of the amount of calcium hydroxide measured by TG-DTA and the reaction ratio of blast-furnace slag by
Get Price
Pozzolanic Reactivity of Silica Fume and Ground Rice Husk
The highest compressive strength value appears on the 10 SF concrete which was 119 of the control concrete at the age of 90 days. Compressive strength of 5 FRHA 10 FRHA and 15 FRHA concretes at 28 days is 93.62 101.97 and 97 MPa or 108 117 and
Get Price
ReferencesDurability Design of Concrete Structures
Aug 26 2016 · Shareable Link. Use the link below to share a full-text version of this article with your friends and colleagues. Learn more.
Get Price
