Self-compacting concrete between workability performance and engineering properties using natural stone wastes

2022 ◽  
Vol 319 ◽  
pp. 126132
Author(s):  
M.A. Rashwan ◽  
T.M. Al Basiony ◽  
A.O. Mashaly ◽  
M.M. Khalil
Keyword(s):  
Natural Stone ◽  
Engineering Properties ◽  
Self Compacting Concrete

Changes in engineering properties of natural stone

2012 ◽  
Vol 165 (3) ◽  
pp. 127-133 ◽  
Author(s):  
Tim Yates ◽  
David Richardson ◽  
Bruno Miglio
Keyword(s):  
Natural Stone ◽  
Engineering Properties

scholarly journals ENGINEERING PROPERTIES OF SUSTAINABLE SELF-COMPACTING CONCRETE WITH CLAY BRICKS WASTE AGGREGATE

2018 ◽  
Vol 9 (3) ◽  
pp. 223-237
Author(s):  
Wasan Khalil ◽  
◽  
Thaer Al-Daebal ◽  
Keyword(s):  
Engineering Properties ◽  
Self Compacting Concrete ◽  
Clay Bricks

Application of Fly Ash and Brick Dust as a Suitable Materials for Fine Aggregate in Self-Consolidating Concrete

2019 ◽  
Author(s):  
Phani N. Ramamurthy
Keyword(s):  
Fly Ash ◽  
Large Scale ◽  
Engineering Properties ◽  
Dry Density ◽  
Hardened Concrete ◽  
Fine Aggregate ◽  
Skilled Workers ◽  
Construction Sites ◽  
Self Compacting Concrete ◽  
Natural Sand

Large-scale efforts are needed for conservation of natural sand whose resources are reducing day by day and legal complications are making it difficult to meet the demand. So, self-compacting concrete (SCC) is an innovative concrete that does not require vibration for placing and compaction. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. The hardened concrete is dense, homogeneous and has the same engineering properties and durability as traditional vibrated concrete. Complex shape of concrete structures and densely arranged bars make it more difficult to use a vibrator. Vibratory compaction is noisy and deleterious to the health of construction workers, as well as an annoyance to people in the neighborhood. In remote areas it is difficult to find skilled workers to carry out the compacting work at construction sites. This paper presents the progress of the research on different harden properties of Self Compacting Concrete using the Ordinary Portland Cement “Ultratek” made and low-calcium fly ash from Birla Glass, Kosamba, Gujarat, as binder materials in making the concrete mixes along with other ingredients locally available. Results indicated increase in workability for all the cases over control concrete. Concrete with fly ash was also found to be about 25% economical when cost per N/mm2 was compared. Based on experimental results correlations are developed to predict Compressive Strength, Flexural strength, cost, Slump and Dry Density for percentage sand replacement with fly ash. Available online at https://int-scientific-journals.com

Considerations on Granite Dimension Stone Porosity and Modifications from Quarry to Slabs

2013 ◽  
Vol 548 ◽  
pp. 124-131
Author(s):  
Maria H.B.O. Frascá
Keyword(s):  
Granitic Rock ◽  
Rock Material ◽  
Natural Stone ◽  
Engineering Properties ◽  
Dimension Stone ◽  
Additional Criterion ◽  
Physical Conditions ◽  
Rock Types ◽  
Stone Durability

This paper presents the physical and petrographic characterization of selected granitic rock types from several quarries in Brazil and aims to contribute to a better knowledge of the engineering properties of granite dimension stone, focusing on laboratory physical determinations and the possible changes that would occur along processing operations, i.e., from the quarried rock to the polished slabs or tiles. The tests – petrography and porosity determinations – led to the collection of parameters of in natura and processed rock material, respectively from specimens obtained from small cubic blocks and polished slabs, situations considered representative of the stresses to which the rock is submitted to during the several processing stages. The results indicated that porosity tends to be higher for “tiles” than for “blocks”, and that “S-type granites” have higher porosity/open-pores values than “ordinary granites”, mainly due to their conspicuous microcracking. Moreover, in spite porous configuration may be modified during stone processing, it was found that such changes are not homogeneous and intrinsically associated to the petrographic characteristics, as previous microcracking and alteration states. Finally, as the new physical conditions, acquired after processing, may influence the stone durability, it is strongly suggested that they should be taken into account, as an additional criterion, to the cladding or flooring natural stone selection and specification.

Engineering properties of Self-Compacting Concrete with stainless steel slags

2016 ◽  
pp. 341-345
Author(s):  
Yeong-Nain Sheen ◽  
Her-Yung Wang ◽  
Li-Jeng Huang ◽  
Te-Ho Sun
Keyword(s):  
Stainless Steel ◽  
Engineering Properties ◽  
Self Compacting Concrete

Effects of marble powder as a partial replacement of cement on some engineering properties of self-compacting concrete

2016 ◽  
Vol 30 (22) ◽  
pp. 2405-2419 ◽  
Author(s):  
Aboubakeur Boukhelkhal ◽  
Lakhdar Azzouz ◽  
Akram Salah Eddine Belaïdi ◽  
Benchaa Benabed
Keyword(s):  
Engineering Properties ◽  
Partial Replacement ◽  
Self Compacting Concrete ◽  
Marble Powder

The white marbles of Brasília, a World Heritage site and capital of Brazil

2019 ◽  
Vol 486 (1) ◽  
pp. 217-227 ◽  
Author(s):  
Maria Heloisa Barros de Oliveira Frascá ◽  
Risale Neves ◽  
Nuria Fernández Castro
Keyword(s):  
Twentieth Century ◽  
Cultural Heritage ◽  
World Heritage ◽  
World Heritage Site ◽  
Natural Stone ◽  
Engineering Properties ◽  
Heritage Site ◽  
Technological Data ◽  
World Cultural Heritage ◽  
Natural Stones

AbstractCreated in the central and western part of Brazil to be the new capital of the country, Brasília is a definitive example of modernist twentieth-century urbanism and was named a Cultural Heritage Property by UNESCO in 1987. It was built in just four years (1956–60), following a design by urbanist Lúcio Costa and architect Oscar Niemeyer. However, despite the worldwide recognition of the architectural value of the buildings, the extensive use of white marbles as cladding is scarcely mentioned in the literature. Surveys conducted in this work indicate that the majority of the marble was sourced primarily from the Italva region (Rio de Janeiro), and probably, in minor quantities, from Cachoeiro de Itapemirim region (Espírito Santo). Available technological data for rocks from those regions revealed their suitable engineering properties as natural stone. Currently, although most of the slabs still remain on the buildings, the preservation of this world cultural heritage is urgent, as pointed out by UNESCO. For this purpose, the potential designation under the name the Brasília white marbles as a Global Heritage Stone Resource would be very beneficial, encouraging the availability of these natural stones for conservation and restoration.

Sign in / Sign up

Export Citation Format

Share Document