scholarly journals Use of Rice Husk-Bark Ash in Producing Self-Compacting Concrete

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Sumrerng Rukzon ◽  
Prinya Chindaprasirt
Keyword(s):  
Compressive Strength ◽  
Portland Cement ◽  
Rice Husk ◽  
Chloride Penetration ◽  
Partial Replacement ◽  
Test Results ◽  
Replacement Level ◽  
Self Compacting Concrete ◽  
Rice Husk Bark Ash ◽  
Better Than

This paper presents the use of blend of Portland cement with rice husk-bark ash in producing self-compacting concrete (SCC). CT was partially replaced with ground rice husk-bark ash (GRHBA) at the dosage levels of 0%–40% by weight of binder. Compressive strength, porosity, chloride penetration, and corrosion of SCC were determined. Test results reveal that the resistance to chloride penetration of concrete improves substantially with partial replacement of CT with a blend of GRHBA and the improvement increases with an increase in the replacement level. The corrosion resistances of SCC were better than the CT concrete. In addition, test results indicated that the reduction in porosity was associated with the increase in compressive strength. The porosity is a significant factor as it affects directly the durability of the SCC. This work is suggested that the GHRBA is effective for producing SCC with 30% of GHRBA replacement level.

BEHAVIOR OF M 50 GRADE SELF-COMPACTING CONCRETE DEVELOPED USING PORTLAND SLAG CEMENT AND METAKAOLIN

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Sravya Nalla ◽  
Janardhana Maganti ◽  
Dinakar Pasla
Keyword(s):  
Compressive Strength ◽  
Mineral Admixtures ◽  
Partial Replacement ◽  
Test Results ◽  
Slag Cement ◽  
Self Compacting Concrete ◽  
Destructive Testing ◽  
Compressive Strength Test ◽  
Portland Slag Cement ◽  
Strength And Durability

Self-compacting concrete (SCC) is a revolutionary development in concrete construction. The addition of mineral admixtures like metakaolin, which is a highly reactive pozzolana to the SCC mixes, gives it superior strength and durability. The present work is an effort to study the behavior of M50 grade SCC by partial replacement of Portland Slag Cement (PSC) with metakaolin. Its strength and durability aspects are comparable with a controlled concrete (without replacement of cement). In the present work, a new mix design methodology based on the efficiency of metakaolin is adopted. The optimum percentage replacement of cement with metakaolin is obtained based on compressive strength test results. The influence of metakaolin on the workability, compressive strength, splitting tensile strength and flexural strength of SCC and its behavior when subjected to elevated temperature was investigated through evaluation against controlled concrete and non-destructive testing. From the test results, it was observed that incorporation of metakaolin at an optimum dosage satisfied all the fresh properties of SCC and improved both the strength and durability performance of SCC compared to controlled concrete.

Influence of Fly Ash and Basalt Fibers on Strength and Chloride Penetration Resistance of Self-Consolidating Concrete

2016 ◽  
Vol 866 ◽  
pp. 3-8 ◽  
Author(s):  
Osama Ahmed Mohamed ◽  
Waddah Al Hawat
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Portland Cement ◽  
Strength Properties ◽  
Chloride Penetration ◽  
Partial Replacement ◽  
Basalt Fibers ◽  
Self Consolidating Concrete ◽  
Chloride Penetration Resistance ◽  
Hardened Properties

Fly ash is a sustainable partial replacement of Portland cement that offers significant advantages in terms of fresh and hardened properties of concrete. This paper presents the findings of a study that aims at assessing the durability and strength properties of sustainable self-consolidating concrete (SCC) mixes in which Portland cement was partially replaced with 10%, 20%, 30%, and 40% fly ash. The study confirms that replacing Portland cement with fly ash at all of the percentages studied improves resistance of concrete to chloride penetration. The 40% fly ash mix exhibited the highest resistance to chloride penetration compared to the control mix. Despite the relative drop in compressive strength after 7 days of curing, the 28-day compressive strength of 40% SCC mix reached 55.75 MP, which is very close to the control mix. The study also confirms that adding 1%, 1.5%, and 2% basalt fibers, respectively, to the 40% fly ash mix improves the resistance to chloride penetration compared to the mix without basalt fibers.

scholarly journals Application of Corn Husk Ash as Partial Replacement for Cement in the Production of Interlocking Paving Stones

2018 ◽  
Vol 1 (March 2018) ◽  
pp. 14-20
Author(s):  
A.A Raheem ◽  
S.I Adedokun ◽  
Q.A Uthman ◽  
A.O Adeyemi ◽  
O.M Oyeniyi
Keyword(s):  
Compressive Strength ◽  
Construction Industry ◽  
Ordinary Portland Cement ◽  
Partial Replacement ◽  
Test Results ◽  
Replacement Level ◽  
Corn Husk ◽  
Pozzolanic Material ◽  
Increased Strength ◽  
Curing Age

As a way of converting agro-wastes into useful materials for the construction industry, this research considered the application of corn husk ash (CHA) as partial replacement for ordinary Portland cement (OPC) in the production of interlocking paving stones. The study investigated the oxide composition of CHA to ascertain its suitability as a pozzolanic material. Some properties of paving stones with CHA as a replacement for OPC were evaluated. The results showed that CHA is a good pozzolana having satisfied the required standards. The compressive strength of the specimens, with replacement levels ranging from 5 to 25% cured for periods of 3-56 days, was lower at early curing age but improved significantly at later age. Five percent (5%) replacement level showed increased strength compared to 0% CHA regardless of curing age. Density decreased with increasing CHA content, water absorption increased with CHA content, while abrasion resistance decreased with CHA substitution. The test results revealed that CHA paving stones at 5% replacement can attain higher strength than the conventional ones at longer curing periods due to its pozzolanic characteristics.

scholarly journals Some Later Ages Structural Characteristics of Concrete Containing Empty Palm Oil Fruit Brunch Ash (EPO-FBA) as Partial Replacement of Ordinary Portland Cement

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Christopher Fapohunda ◽  
Ahmed Shittu
Keyword(s):  
Compressive Strength ◽  
Portland Cement ◽  
Palm Oil ◽  
Ordinary Portland Cement ◽  
Structural Characteristics ◽  
Structural Parameters ◽  
Partial Replacement ◽  
Normal Density ◽  
Cement Replacement ◽  
Better Than

This paper presents the results of the investigation conducted to assess the latter day strengths of concrete in which the cement constituent of the mix has been partially replaced by empty palm oil fruit brunch (EPO-FBA). The structural parameters investigated were: workability, density and compressive strength. Some physical properties and chemical analysis were conducted. Slump test was used to assess the workability, while 150 x 150 x 150mm concrete cube specimens were used to assess the density and compressive strength characteristics. Replacement of Portland cement with EPO-FBA were carried out up to 20% by weight at interval of 5%. The results showed that (i) the concrete specimens with EPO-FBA became less workable with increase in the cement replacement with EPO-FBA, (ii) normal density concrete was obtained with densities in the range 2240 – 2480 kg/m3 when the cement constituent of the mix was partially replaced with EPO-EBA up to 20%, and (iii) the compressive strength developed by the concrete specimens at 5% cement replacement with EPO-FBA was better than the control samples

scholarly journals EVALUATION OF WATER HYACINTH STEM ASH AS POZZOLANIC MATERIAL FOR USE IN BLENDED CEMENT

2016 ◽  
Vol 7 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Neelu Das ◽  
Shashikant Singh
Keyword(s):  
Compressive Strength ◽  
Portland Cement ◽  
Water Absorption ◽  
Water Hyacinth ◽  
Setting Time ◽  
Blended Cement ◽  
Partial Replacement ◽  
Test Results ◽  
Pozzolanic Material ◽  
Time Specific

 In this paper, the potential use of water hyacinth stem ash (WHA) in the partial replacement of cement is studied. WHA was used as a replacement for ordinary Portland cement at 10, 15, 20 and 25 wt. %. To evaluate the pozzolanic activity of WHA, the properties investigated were chemical composition, particle size, soundness, setting time, specific gravity, presence of crystalline matter, compressive strength, water absorption and sorption. Mortar cubes were tested for compressive strength up to the age of 56 days, whereas water absorption and sorption tests are carried out at the age of 28 days. Test results reveal that mortar cubes with 10% WHA substitution for Portland cement produced comparative compressive strength values to control mortar. It was also observed that the use of WHA in Portland cement has reduced water absorption characteristics.

Durability of High Strength Self Compacting Concrete with Metakaolin Containing Waste

2016 ◽  
Vol 674 ◽  
pp. 65-70 ◽  
Author(s):  
Girts Bumanis ◽  
Diana Bajare ◽  
Aleksandrs Korjakins
Keyword(s):  
Compressive Strength ◽  
High Strength ◽  
Chloride Penetration ◽  
Kaolin Clay ◽  
Heating Process ◽  
Production Plant ◽  
Test Results ◽  
Self Compacting Concrete ◽  
Freeze Thaw ◽  
Cement Replacement

Metakaolin is considered as one of most promising pozzolanic microfiller material in concrete industry. Metakaolin is a high value product obtained from kaolin clay calcined at high temperatures which also can be effectively used in ceramic industry therefore its application in concrete industry is rather limited. In present research metakaolin containing waste (MKW) by-product was studied as a partial cement replacement in high strength self compacting concrete (SCC). Obtained waste material derives from the foam glass granule production plant where kaolin clay is used as releasing agent during heating process and in the end metakaolin with glass impurities is obtained as by-product. In present research 5 to 15 wt.% of cement was replaced by MKW. A constant water amount was used for all mixtures and workability (>600 mm by cone flow) was ensured by changing the amount of superplasticizer. Compressive strength was tested at the age of 7, 28 and 180 days. To determine durability of SCC the chloride penetration was tested according to NT BUILD 492, freeze-thaw test according to LVS 156-1:2009 annex C and alkali-silica reactivity test according to RILEM TC 106-AAR-2. The results indicate that cement replacement by MKW did not affect the strength of SCC significantly. At the age of 28 days SCC with 15 wt.% of MKW reached compressive strength of 70 MPa comparing to 68 MPa to reference mixture. The chloride penetration test results indicated that the non-steady-state migration coefficient of reference samples was reduced 3.7 times and it was concluded that SCC resistance to chloride penetration can be increased by incorporation of MKW in mixture composition. Freeze-thaw test results indicated that obtained SCC can withstand at least 500 freeze-thaw cycles without surface damage and weight loss. It was concluded that up to 15 wt.% of cement can be replaced by metakaolin containing waste without strength loss and the durability of SCC could be increased.

scholarly journals CO2 Uptake and Physicochemical Properties of Carbonation-Cured Ternary Blend Portland Cement–Metakaolin–Limestone Pastes

Materials ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 4656
Author(s):  
Rizwan Hameed ◽  
Joonho Seo ◽  
Solmoi Park ◽  
Issam T. Amr ◽  
H.K. Lee
Keyword(s):  
Compressive Strength ◽  
Portland Cement ◽  
Ternary Blend ◽  
Co2 Uptake ◽  
Test Results ◽  
Ternary Blends ◽  
Replacement Level ◽  
Pore Characteristics ◽  
Compressive Strength Test ◽  
Carbonation Curing

The feasibility of carbonation curing of ternary blend Portland cement–metakaolin–limestone was investigated. Portland cement was substituted by the combination of metakaolin and limestone at levels of 15%, 30%, and 45% by the mass. The ternary blends were cured with four different combinations of ambient and carbonation curing. The mechanical property, CO2 uptake, and mineralogical variations of the ternary blend pastes were investigated by means of compressive strength test, thermogravimetric analysis, and X-ray diffractometry. In addition, volume of permeable voids and sorptivity of the ternary blends were also presented to provide a fundamental idea of the pore characteristics of the blends. The test results showed that the increasing amount of metakaolin and limestone enhanced the CO2 uptake, reaching 20.7% for the sample with a 45% cement replacement level at 27 d of carbonation. Meanwhile, the compressive strength of the samples was reduced up to 65% upon excessive incorporation of metakaolin and limestone. The samples with a replacement level of 15% exhibited a comparable strength and volume of permeable voids to those of the sample without substitution, proving that the ternary blend Portland cement–metakaolin–limestone can be a viable option toward the development of eco-friendly binders.

scholarly journals EFFECT OF PARTIAL REPLACEMENT OF CEMENT WITH RICE HUSK ASH AND CELLULOSE INDUSTRIAL RESIDUE ON COMPRESSIVE STRENGTH OF CONCRETE

2019 ◽  
pp. 1-9
Keyword(s):  
Compressive Strength ◽  
Portland Cement ◽  
Rice Husk ◽  
Ordinary Portland Cement ◽  
Rice Husk Ash ◽  
Setting Time ◽  
Research Work ◽  
Partial Replacement ◽  
Control Test ◽  
Industrial Residue

In this research work, the effect of rice husk ash on concrete produced with cellulose industrial residue was studied. A mix proportion of 1:1.8:3.7 with water cement ratio of 0.47 were used. The percentage replacement of Ordinary Portland Cement (OPC) with cellulose industrial residue and rice husk ash used were 0%, 5%, 10%, 20% 30% and 40%. Concrete cubes of 150mm x 150mm x 150mm of Ordinary Portland Cement/Cellulose Industrial Residue and Ordinary Portland Cement/Cellulose Industrial Residue/Rice Ash were cast and cured at 3,7,28,60 and 90 days respectively. At the end of each hydration period, the concrete cubes were crushed and their compressive strength were determined. The result of compressive strength of 5-40% replacement of cement with cellulose industrial residue ranges from 13.02-32.81 N/mm2 as against 25.60-42.08N/mm2 for the control test. The result of the compressive strength of 5-40% replacement of cement with Cellulose Industrial Residue and Rice Husk Ash ranges from 13.17-36.30N/mm2 as against 25.60-42.08N/mm2 for the control test. The result of the initial and final setting time of Ordinary Portland Cement/Cellulose Industrial Residue and Cement/Cellulose Industrial Residue/Rice Husk Ash for 5-40% replacement of cement ranges from 61-118mins, 58-110mins and 620 – 836mins, 598 – 799mins respectively as against 52mins and 590mins for the control test. The main conclusion of this study is that the incorporation rice husk ash into cellulose industrial residue increase the strength of concrete produced. The objective of this study is to assess the strength of concrete produced when two pozzolanic materials were used to replace cement in producing concrete.

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