Bamboo leaf ash for use as mineral addition with Portland cement

2021 ◽  
pp. 102769
Author(s):  
Lucas Henrique Pereira Silva ◽  
Jacqueline Roberta Tamashiro ◽  
Fábio Friol Guedes de Paiva ◽  
Luis Fernando dos Santos ◽  
Silvio Rainho Teixeira ◽  
...  
Keyword(s):  
Portland Cement ◽  
Mineral Addition ◽  
Bamboo Leaf Ash

Characterization of Red Ceramic Waste for Application as Mineral Addition in Portland Cement

2021 ◽  
Vol 33 (6) ◽  
pp. 04021108
Author(s):  
J. Hoppe Filho ◽  
C. A. O. Pires ◽  
O. D. Leite ◽  
M. R. Garcez ◽  
M. H. F. Medeiros
Keyword(s):  
Portland Cement ◽  
Ceramic Waste ◽  
Mineral Addition

scholarly journals Industrial Wastes as Alternative Mineral Addition in Portland Cement and as Aggregate in Coating Mortars

2017 ◽  
Vol 20 (suppl 2) ◽  
pp. 358-364 ◽  
Author(s):  
Kamilla Almeida Oliveira ◽  
Bruna Inácio Nazário ◽  
Antonio Pedro Novaes de Oliveira ◽  
Dachamir Hotza ◽  
Fabiano Raupp-Pereira
Keyword(s):  
Portland Cement ◽  
Industrial Wastes ◽  
Mineral Addition

scholarly journals Effects of Elevated Temperature on Splitting Tensile Strength of OPC and BLA Pozzolanic Concrete and Mortar

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Catherine M Ikumapayi ◽  
Samuel L Akingbonmire
Keyword(s):  
Tensile Strength ◽  
Elevated Temperature ◽  
Portland Cement ◽  
Ordinary Portland Cement ◽  
Construction Materials ◽  
Splitting Tensile Strength ◽  
Cover Concrete ◽  
Concrete Mix ◽  
The World ◽  
Bamboo Leaf Ash

Concrete is one of the most common and widely applied construction materials in the world. It is good in compression but weak in tension. The weakness in tension is been catered for through the use of reinforcement but there is still need to ensure that its  minimum tensile strength  is retained during the course of production and usage to avoid cracks development at the reinforcement cover. Concrete mixes of 1:2:4 (cement: sand: granite) and mortar of 1:6 mix ratio of cement to sand were produced. The ordinary Portland cement (OPC) content was partially replaced with bamboo leaf ash (BLA) from 0% to 12% at 2% interval. They were tested under normal and elevated temperature to know the effect of elevated temperature on their splitting tensile strength. The results obtained showed OPC concrete mix to improve in splitting tensile strength (3.5 N/mm2 to 3.7 N/mm2 at 28 days curing) whereas there was a decrease in the splitting tensile strength obtained for BLA mixes (3.29 N/mm2 to 1.75 N/mm2 for 12% percentage replacement at 28 days curing). The same trend of results was obtained for mortar mix; OPC mix increases from 1.65 N/mm2 to 1.86 N/mm2 while BLA at 12 % percentage replacement decreases from 2.02 N/mm2 to 1.7 N/mm2. OPC concrete and mortar under high elevated temperature (100oC) will improve in splitting tensile strength while elevated temperature decreases the splitting tensile of BLA concrete and mortar mixes at 12%.

Production of Durable Concrete with a Mineral Addition Blend of Calcined Clay-Limestone-Gypsum (LC2) and Portland Cement

2019 ◽  
pp. 183-193
Author(s):  
Juan Francisco Garcés Vargas ◽  
Flavio Morocho Guamán ◽  
Yosvany Diaz Cárdenas ◽  
Alina Hereira Diaz ◽  
Jose Fernando Martirena-Hernandez
Keyword(s):  
Portland Cement ◽  
Calcined Clay ◽  
Mineral Addition

Hydration of Portland cement with red mud as mineral addition

2017 ◽  
Vol 131 (3) ◽  
pp. 2477-2490 ◽  
Author(s):  
R. C. O. Romano ◽  
H. M. Bernardo ◽  
M. H. Maciel ◽  
R. G. Pileggi ◽  
M. A. Cincotto
Keyword(s):  
Portland Cement ◽  
Red Mud ◽  
Mineral Addition

Sericitic Phyllite as Addition in Portland Cement

2018 ◽  
Vol 930 ◽  
pp. 131-136 ◽  
Author(s):  
Isabella de Souza Morais ◽  
Luciano Fernandes de Magalhães ◽  
Luis Felipe dos Santos Lara ◽  
Elaine Carballo Siqueira Corrêa ◽  
Raquel Maria Rocha Oliveira Menezes ◽  
...  
Keyword(s):  
Portland Cement ◽  
High Performance ◽  
Planetary Mill ◽  
Cement Industry ◽  
Partial Substitution ◽  
Electric Resistance Furnace ◽  
Mineral Addition ◽  
Mineral Additions ◽  
Different Temperatures ◽  
Pozzolanic Properties

Pozzolans are materials that when milled are able to react with the cement, forming compounds with binder properties. Seeking to reduce costs and improve Portland cement performance, the cement industry has used mineral additions such as pozzolans, partially replacing clinker in Portland cement. Sericitic Phyllite is a metamorphic rock, considered sterile by iron mining. It is extracted from the pit to enable the extraction of iron ore and is disposed in sterile piles, representing an environmental liability. The present work evaluated the possibility of the Sericitic Phyllite acquires pozzolanic properties from thermal treatment, to be used as mineral addition in the partial substitution of Portland cement in mortars. The material was processed by milling in its natural moisture of 8% using a high performance planetary mill, and calcination in an electric resistance furnace at different temperatures (350, 550 and 850oC) for thirty minutes each. It was characterized by laser granulometry, X-ray diffraction (XRD), scanning electron microscopy (SEM) and differential thermal and thermogravimetric analysis (DTA/TGA). After characterization, specimens were prepared with 25% substitution by weight of the Portland cement by the Sericitic Phyllite. The calcined material in 350, 550 and 850oC reached, respectively, 70%, 76% and 82% of the resistance of the control mortar. The results indicate the feasibility of using the Sericitic Phyllite as mineral addition in Portland cements as the mortars with the calcined material in all temperatures reached 32MPa.

Comparison of Degradation of Concretes with High Portions of Mineral Additions and Ordinary Portland Cement Based Concretes due to Simulated Acidic Rain

2020 ◽  
Vol 838 ◽  
pp. 94-99
Author(s):  
Adriana Eštoková ◽  
Vlasta Ondrejka Harbuľáková ◽  
Michaela Smolakova
Keyword(s):  
Portland Cement ◽  
Acid Rain ◽  
Ordinary Portland Cement ◽  
Model Solution ◽  
Not Given ◽  
Mineral Addition ◽  
Mineral Additions ◽  
Acidic Rain ◽  
Clear Statement

The paper deals with investigation of changes in selected properties of concretes which have been exposed to acid rain. The experiments took place in laboratory under model solution representing acid rain (40 % HNO3, 60% H2SO4) over a period of 7 weeks. The concrete samples investigated were concretes with ordinary Portland cement only as well as concretes of high-portion-mineral-addition-cements as well. Disruptions, cracking and samples' falling apart at the end after 7-week exposure to acid rain were observed by evaluation of visual changes. Based on the determination of the other parameters the results are not so uniform that is why the clear statement of more suitable concrete resistant to acid rain is not given. The assumption that a high-mineral concrete mix would be more suitable for environments exposed to acidic rain was not confirmed in this experiment.

The Portland Cement Industry of the World

1898 ◽  
Vol 46 (1192supp) ◽  
pp. 19108-19109
Author(s):  
Bernard L. Green
Keyword(s):  
Portland Cement ◽  
Cement Industry ◽  
The World
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