scholarly journals Microstructure Characteristics of Self Compacting Concrete using Sea Water

2018 ◽  
Author(s):  
erniati ◽  
muhammad wihardi tjaronge ◽  
Rudy Djamaluddin ◽  
Victor Sampebulu
Keyword(s):  
Compressive Strength ◽  
Sea Water ◽  
Concrete Strength ◽  
Infrastructure Development ◽  
Self Compacting Concrete ◽  
Microstructure Characteristics ◽  
Dense Microstructure ◽  
Water Curing ◽  
The Relationship ◽  
Mixing Water

In the cycle of life, the needs of freshwater more and more. Infrastructure development is increasing. On the concrete industry, several billion tones of water used in earth as mixing water, treatment water (curing) and cleaner water every year, where using of sea water is obstructed. For that, the using of sea water which consists of 97% of the total water on earth is absolutelynecessary. Self-compacting concrete (SCC) has dense microstructure. Knowledge about the microstructure and properties of each component a concrete and their relationship is useful to control the behavior. This research aims to know the relationship between compressive strength and microstructure characteristics of Self Compacting Concrete which using seawater up to the age of 90 days. The results of this study were the compressive strength of SCC using sea water is higher than the SCC using fresh water. Seawater does not reduce the strength of SCC concrete until the age of 90 days, but instead of Seawater is accelerating the development of SCC concrete strength at an early age. The compressive strength of concrete SCC is influenced by the phase microstructure (especially with tobermorite and portlandite) formed in the concrete.

scholarly journals MICROSTRUCTURE CHARACTERISTIC AND COMPRESSIVE STRENGTH OF SELF COMPACTING CONCRETE USING SEA WATER AS MIXING WATER

2018 ◽  
Author(s):  
erniati ◽  
muhammad wihardi tjaronge ◽  
Rudy Djamaluddin ◽  
Victor Sampebulu
Keyword(s):  
Compressive Strength ◽  
Sea Water ◽  
Infrastructure Development ◽  
Self Compacting Concrete ◽  
Concrete Technology ◽  
Ongoing Research ◽  
Microstructure Characteristics ◽  
The Difference ◽  
Microstructure Characteristic ◽  
Mixing Water

Indonesia is an archipelagic country which makes many areas doesn’t have qualified water as drinking water. As concrete construction building in the region has possibly minimum or non-existent amount of fresh water, the using of sea water in mixing concrete and curing concrete is unavoidable. The demand of water is getting more and more increasing in both the improvement of infrastructure development and the life need. In the concrete industry, several billion tons of water is used as water mixing, curing and cleaning every year. Therefore the use of sea water is not allowed. In fact, we know that seawater is one of the abundant natural resources. Due to this problem, the research on the use of sea water is very important owing to the saving of freshwater is seriously needed. This study uses sea water by combining effective and efficient concrete technology of Self Compacting Concrete (SCC). This paper is a part of ongoing research studying about microstructure characteristics and the strength of SCC using sea water. It discusses about the compressive strength, absorption and porosity as microstructure characteristics of SCC until the age of 28 days. The results are: (1) the seawater used as mixing water did not affect the development of the compressive strength of concrete, (2) the difference compressive strength of SCC-SS with SCC-FF at an early age is very high occurred at ages 1 and 3 days and (3) The higher the compressive strength value is, the smaller the absorption and porosity is in concrete.

Porosity and Microstructure Phase of Self Compacting Concrete Using Sea Water as Mixing Water and Curing

2015 ◽  
Vol 1119 ◽  
pp. 647-651 ◽  
Author(s):  
Erniati ◽  
M.W. Tjaronge ◽  
Victor Sampebulu ◽  
Rudy Djamaluddin
Keyword(s):  
Compressive Strength ◽  
Fresh Water ◽  
Sea Water ◽  
Self Compacting Concrete ◽  
Minimum Quantity ◽  
Microstructure And Properties ◽  
Dense Microstructure ◽  
Friedel’S Salt ◽  
The Individual ◽  
Mixing Water

In Indonesia, several regions have a minimum quantity or none of fresh water. Self Compacting Concrete (SCC) has a dense microstructure. Knowledge about the microstructure and properties of the individual components of concrete have a relationship that is useful for controlling the behavior of concrete. Porosity and microstructure SCC using sea water as mixing water and curing water discussed in this paper. The results showed the higher the compressive strength of SCC sea water is getting smaller porosity. Porosity on the SCC decreases with increasing quantities of microstructure phase tobermorite (CSH), portlandite (CH), Friedel's salt and ettringite.

scholarly journals THE SELF COMPACTING CONCRETE (SCC) USING SEAWATER AS MIXING WATER WITHOUT CURING

2018 ◽  
Author(s):  
Erniati Bachtiar
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Sea Water ◽  
Splitting Tensile Strength ◽  
Test Method ◽  
Building Structures ◽  
Working Process ◽  
Self Compacting Concrete ◽  
Concrete Building ◽  
Mixing Water

The number of problems found in the construction world includes the difficulty or lack of fresh water in some areas to be mixed in the concrete, negligence in the maintenance of concrete and working process of concrete mainly on the concrete structures have a complex reinforcement and high concrete building structures. This study aims to find out the compressive strength, splitting tensile strength, absorption, and porosity of Self Compacting Concrete (SCC) using sea water as mixing water and with or without curing in sea water. The test specimens were made for each test specimen withthe variation on age 1 day, 3 days, 7 days, 28 days and 90 days. The test method of compressive strength according to ASTM 39/C 39M-12a standard, tensile strength according to ASTM C496 / C496M-11 standard and the porosity and absorption according to ASTM C642-13 standard. The result of research was 1) the decrease in compressive strength in the specimen SCC-SWC was from 3 days, 7 days, 28 days and 90 days consecutive 13.20%, 12.90%, 12.80%, and 12.50%; 2) the decreases in splitting tensile strength in the specimen SCC-SWC were from the age of 3 days, 7 days, 28 days until the age of 90 days consecutive by 3.10%, 8.05%, 9.51%, and 9.21%; 3) the increase in the porosity values on the specimenSCC seawater without cured in sea water (SCC-SWC) at age 3 days, 7 days, 28 days and 90 days was 2.86%, 7.90%,5.86%, and 5.55%, respectively; 4) the increase in the absorption values on the specimen SCC without curing at 3 days, 7 days, 28 days and 90 days was 15.80%, 20.57%, 15.84%, and 30.80%, respectively. The increase in mechanical properties (compressive strength and tensile strength) in the both of the specimen SCC-SC and SCC-SWC along with the decrease of porosity and absorption. Conversely, the decrease of compressive strength and tensile strength in the both of the specimen SCC-SC and SCC-SWC along with the increase in porosity and absorption value in the SCC

scholarly journals WORKABILTY AND COMPRESSIVE STRENGTH OF SELF COMPACTING CONCRETE USE SEAWATER AS MIXING WATER

2018 ◽  
Author(s):  
erniati ◽  
muhammad wihardi tjaronge ◽  
Rudy Djamaluddin ◽  
Victor Sampebulu
Keyword(s):  
Compressive Strength ◽  
Sea Water ◽  
Fresh Concrete ◽  
Self Compacting Concrete ◽  
Ongoing Research ◽  
Filling Ability ◽  
Compressive Strength Test ◽  
Passing Ability ◽  
Water Measurement ◽  
Mixing Water

Self-compacting Concrete (SCC) is one of concrete technological innovation which effective and efficient. SCC has properties of high fluidity and so that is able to flow past the reinforcement without any segregation of material and fill the spaces in the mold little or without compaction process. Workability of fresh concrete can be said as SCC if qualified filling ability, passing ability and segregation resistance. The aim of this study was to determine the workability and compressive strength of the SCC using seawater as mixing water. Measurement of workability on fresh concrete used EFNARC standard which includes were slump flow test, V-funnel and L-box. Compressive strength test of concrete used ASTM standard 39 / C 39M – 99. The test conducted at the age of 1, 3, 7, and 28 days. The results showed that the workability of fresh concrete using sea water as mixing water qualified as SCC. Compressive strength of SCC using seawater as mixing water had a high compressive strength at an early age compared with SCC using fresh water. This paper is a part of ongoing research studying about microstructure characteristics and the strength of SCC using sea water.

scholarly journals Porosity, pore size and compressive strength of self compacting concrete using sea water

2018 ◽  
Author(s):  
erniati ◽  
muhammad wihardi tjaronge ◽  
Ulva ria irfan
Keyword(s):  
Compressive Strength ◽  
Pore Size ◽  
Sea Water ◽  
Testing Machine ◽  
Concrete Compressive Strength ◽  
Self Compacting Concrete ◽  
Universal Testing ◽  
Compressive Strength Test ◽  
Mixing Water

Indonesia is the largest archipelago in the world, so it has much territory that the quality of the source water is not qualified as mixing water in construction. Besides, construction of concrete in areas that are likely quantity of water or fresh water is very minimal or even nothing then the sea water cannot be avoided in mixing concrete. This research was an experimental study, the samples for compressive strength test are cylindrical premises size of 10 mm×20 mm. The porosity relation, compressive power, age and model of porosity relationship with SCC concrete compressive strength which using sea water is discussed in this paper. Compressive strength testing is following the standard ASTM 39/C 39-99. Universal Testing Machine (UTM) was used in the testing of compressive strength. A test specimen for porosity created by taking part of the cylinder and then slashed with a size of approximately 2 cm×3 cm with a 0.003 mm thick. The type and pore size and porosity were analyzed by using a polarizing petrography microscope Olympus BX 51-P. The result of the research was increased the compressive strength and density of microstructures in line with the decrease in porosity and pore size of concrete and concrete age. Compressive strength relations (σ ss ) and porosity (p ss ) the SCC used seawater can be approximated equation σ ss = σ o (1-p)K, with σ o = 119.6 and K = 7.502.

scholarly journals Evaluation of Self-Compacting Concrete Strength with Non-Destructive Tests for Concrete Structures

2019 ◽  
Vol 9 (23) ◽  
pp. 5109 ◽  
Author(s):  
Miguel C. S. Nepomuceno ◽  
Luís F. A. Bernardo
Keyword(s):  
Compressive Strength ◽  
Concrete Strength ◽  
Surface Hardness ◽  
Pulse Velocity ◽  
Concrete Compressive Strength ◽  
Self Compacting Concrete ◽  
Coarse Aggregates ◽  
Pull Out ◽  
Concrete Maturity ◽  
Non Destructive

Self-compacting concrete (SCC) shows to have some specificities when compared to normal vibrated concrete (NVC), namely higher cement paste dosage and smaller volume of coarse aggregates. In addition, the maximum size of coarse aggregates is also reduced in SCC to prevent blocking effect. Such specificities are likely to affect the results of non-destructive tests when compared to those obtained in NVC with similar compressive strength and materials. This study evaluates the applicability of some non-destructive tests to estimate the compressive strength of SCC. Selected tests included the ultrasonic pulse velocity test (PUNDIT), the surface hardness test (Schmidt rebound hammer type N), the pull-out test (Lok-test), and the concrete maturity test (COMA-meter). Seven sets of SCC specimens were produced in the laboratory from a single mixture and subjected to standard curing. The tests were applied at different ages, namely: 1, 2, 3, 7, 14, 28, and 94 days. The concrete compressive strength ranged from 45 MPa (at 24 h) to 97 MPa (at 94 days). Correlations were established between the non-destructive test results and the concrete compressive strength. A test variability analysis was performed and the 95% confidence limits for the obtained correlations were computed. The obtained results for SCC showed good correlations between the concrete compressive strength and the non-destructive tests results, although some differences exist when compared to the correlations obtained for NVC.

scholarly journals INVESTIGATIONS ON THE RELATIONSHIP BETWEEN POROSITY AND STRENGTH OF ADMIXTURES MODIFIED HIGH PERFORMANCE SELF-COMPACTING CONCRETE

2016 ◽  
Vol 22 (4) ◽  
pp. 520-528 ◽  
Author(s):  
Beata ŁAŹNIEWSKA-PIEKARCZYK
Keyword(s):  
Compressive Strength ◽  
High Performance ◽  
Total Porosity ◽  
Self Compacting Concrete ◽  
Research Results ◽  
Air Content ◽  
New Generation ◽  
The Relationship ◽  
Viscosity Modifying Admixture

The influence of a type of new generation: superplasticizer (SP), anti-foaming admixture (AFA) and viscosity modifying admixture (VMA) on the air-content, workability of high performance self-compacting concrete (HPSCC) is analyzed in the paper. The purpose of this study was to examine the influence of type of the admixtures on porosity of HPSCC in the aspect of the compressive strength. The research results indicated that type of admixtures and its combina­tions result in different strengths of HPSCC, regardless of the total porosity characteristics of HPSCC.

scholarly journals Comparison of Compressive Strength of Concrete by Partial Replacement of Cement with GGBS and Silica Fume with Sea Water Curing and Addition with Fibers

2021 ◽  
pp. 31-39
Author(s):  
A Aswani and Janardhan G
Keyword(s):  
Compressive Strength ◽  
Silica Fume ◽  
Sea Water ◽  
Glass Fibers ◽  
Vital Role ◽  
Strength Test ◽  
Partial Replacement ◽  
Compressive Strength Test ◽  
Water Curing ◽  
Compressive Strength Of Concrete

In construction world concrete plays a vital role, around 60% of structure consists of Concrete. However, the production of Portland cement, an essential constituent of concrete, leads to the release of significant amounts of CO2, depletion of natural resources and environmental degradation. This paper investigates the compressive strength of concrete by replacing cement with GGBS and silica fume effect of glass fibers on performance of concrete is studied. In this present work a humble attempt had been made to evaluate and compare the compressive strengths of GGBS blended concrete cubes with controlled concrete cubes cured under sea water for 28 days. By conducting the tests on the cubes, conclusions were drawn after plotting and analyzing the results. Compressive strength test is conducted on the samples after 28 days. The optimum value is obtained at 15% replacement with GGBS and 5% with Silica fume. In this study again we trailed addition with Glass fibers with the percentage of 0.5%,1.0%,1.5%, compressive strength have been studied. Finally at 1.0% addition we get maximum strength compared to controlled mix.

Compressive Strength and Hydration Process of Self Compacting Concrete (SCC) Mixed with Sea Water, Marine Sand and Portland Composite Cement

2014 ◽  
Vol 935 ◽  
pp. 242-246 ◽  
Author(s):  
M. Wihardi Tjaronge ◽  
Rita Irmawaty ◽  
Sakti Adji Adisasmita ◽  
Arwin Amiruddin ◽  
Hartini
Keyword(s):  
Compressive Strength ◽  
High Performance ◽  
Sea Water ◽  
Water Shortage ◽  
Hydration Process ◽  
Fine Aggregate ◽  
Self Compacting Concrete ◽  
Composite Cement ◽  
Static Modulus ◽  
Marine Sand

In order to eliminate the main problems of clean water shortage and fine aggregate in the low land areas and the distant islands, it is purpose to utilized the sea water, marine sand and Portland composite cement to produce the high performance Self-Compacting Concrete (SCC), where Portland composite cement containing of fly ash. The evaluation result on the mix design, workability (slump flow, segregation), mechanical properties (compressive strength-static modulus) and hydration process of SCC were discussed.

scholarly journals Pengaruh Air Laut sebagai Air Pencampur dan Air Perawatan pada Karakteristik Pasta Semen dan Mortar

2018 ◽  
Vol 5 (1) ◽  
pp. 28
Author(s):  
Adiwijaya Ali ◽  
Irka Tangke Datu
Keyword(s):  
Compressive Strength ◽  
Portland Cement ◽  
Cement Paste ◽  
Tap Water ◽  
Fine Aggregate ◽  
Curing Conditions ◽  
Composite Cement ◽  
Water Characteristics ◽  
Water Curing ◽  
Mixing Water

The goal of this research is to investigate the influence of seawater as mixing water and curing water on characteristics of cement paste and mortar. Research was conducted with making mixtures of cement paste and mortar using two kind of cement, Portland Composite Cement (PCC) and Pozzolana Portland Cement (PPC) with seawater as mixing water. Characteristics of fine aggregate and characteristics of cement paste with seawater mixing were investigated. Furthermore, 144 cube mortar specimens in size of 5 cm x 5 cm x 5 cm in four series mortar mixtures were casted according with SNI 03-6825-2002. At 24 hours after specimens were casted, cube mortar specimens were cured in tap water curing (TC), seawater curing (SC) and air curing (AC). After achievement at certain curing day of 3, 7, 14 and 28 days, cube mortar samples were tested in compressive strength. Results concluded that seawater mixing improves compressive strength of mortar up to 28 days in all curing conditions, TC, SC and AC. Moreover, strength of mortar is not affected by type of curing water, tap water or seawater.

Sign in / Sign up

Export Citation Format

Share Document