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26 Results Found

  • Review
  • Open Access
21 Citations
7,786 Views
27 Pages

26 August 2023

In Peru, socio-environmental conflicts related to the development of mining-metallurgical processes and the responsible disposal of mine tailings have become central issues for accepting mining projects, especially regarding building relationships of...

  • Article
  • Open Access
23 Citations
4,997 Views
15 Pages

28 February 2019

Stope backfilling with mine wastes has become a common practice in underground mines worldwide. Despite the increasing popularity in paste and rock fills, hydraulic fill made of classified mill tailings or sands remains commonly used in many mines. W...

  • Article
  • Open Access
4 Citations
2,104 Views
20 Pages

21 February 2022

Modifying weathered argillaceous slate (WAS) to fill the subgrades of high-speed railways not only leads to obvious environmental benefits but also significantly saves natural resources. Previous studies have used several additives together with ceme...

  • Article
  • Open Access
12 Citations
2,563 Views
18 Pages

Investigation on Water Transformation and Pore Structure of Cement-Stabilized Dredged Sediment Based on NMR Technology

  • Shiquan Wang,
  • Xingxing He,
  • Guanghua Cai,
  • Lei Lang,
  • Hongrui Ma,
  • Shunmei Gong and
  • Zhiyong Niu

28 April 2022

Cement-stabilized dredged sediment (CDS) when used as a new road construction material cannot only solve the problem of abandoned sediment disposal, but also effectively save natural soil resources. This study aimed to evaluate the strength and perme...

  • Article
  • Open Access
1,965 Views
20 Pages

Diagenetic Study of Marrón Emperador Ornamental Stone (Upper Cretaceous, SE Spain)

  • María Concepción Muñoz-Cervera and
  • Juan Carlos Cañaveras

27 April 2023

The “Marrón Emperador” ornamental stone is known for its characteristic deep brown colour filled with white spots and veins. It consists of a brecciated dolostone with different generations of calcite/dolomite veins and veinlets th...

  • Article
  • Open Access
8 Citations
7,359 Views
10 Pages

Marginal Leakage of Endodontic Temporary Restorative Materials around Access Cavities Prepared with Pre-Endodontic Composite Build-Up: An In Vitro Study

  • Atsushi Kameyama,
  • Aoi Saito,
  • Akiko Haruyama,
  • Tomoaki Komada,
  • Setsuko Sugiyama,
  • Toshiyuki Takahashi and
  • Takashi Muramatsu

5 April 2020

This study aimed to examine the marginal seal between various commercial temporary restorative materials and exposed dentin/built-up composite. Sixty bovine incisors were cut above the cemento-enamel junction, and half of the dentin was removed to fo...

  • Article
  • Open Access
29 Citations
7,049 Views
16 Pages

7 January 2023

Pervious concrete is one of the emerging sustainable materials that has recently gained the attention of many researchers. The importance of pervious concrete mainly depends on its application and on a modern integrated approach in which it is employ...

  • Article
  • Open Access
1 Citations
3,019 Views
14 Pages

Evaluation of the Marginal Adaptation of Two Hydraulic Calcium Silicate Cements Used in Apical Plugs: An In Vitro Study

  • Sara Filipe,
  • José Pedro Martinho,
  • Siri Paulo,
  • Catarina Carvalho,
  • Ana Coelho,
  • Inês Amaro,
  • Eunice Carrilho,
  • Anabela Paula,
  • Carlos Miguel Marto and
  • Henrique Girão
  • + 3 authors

5 January 2024

Background: The emergence of new hydraulic calcium silicate cements has revolutionized endodontics, addressing the limitations of mineral trioxide aggregate (MTA). The aim of this study is to assess and compare the marginal adaptation of two calcium...

  • Feature Paper
  • Article
  • Open Access
10 Citations
4,201 Views
14 Pages

Reducing Soil Permeability Using Bacteria-Produced Biopolymer

  • Amanda Mendonça,
  • Paula V. Morais,
  • Ana Cecília Pires,
  • Ana Paula Chung and
  • Paulo J. Venda Oliveira

7 August 2021

The building of civil engineering structures on some soils requires their stabilisation. Although Portland cement is the most used substance to stabilise soils, it is associated with a lot of environmental concerns. Therefore, it is very pertinent to...

  • Feature Paper
  • Article
  • Open Access
2 Citations
2,621 Views
16 Pages

15 January 2023

Hydraulic fracture morphology and propagation mode are difficult to predict in layers of the various lithological strata, which seriously affects exploitation efficiency. This paper studies the fundamental mechanical and microscopic properties of the...

  • Article
  • Open Access
3 Citations
1,384 Views
18 Pages

Influence of Materials of Moulds and Geometry of Specimens on Mechanical Properties of Grouts Based on Ultrafine Hydraulic Binder

  • Beatriz Hortigon,
  • Esperanza Rodriguez-Mayorga,
  • Jose Antonio Santiago-Espinal,
  • Fernando Ancio and
  • Jose Maria Gallardo

3 April 2024

Ultrafine hydraulic binder grout injection is a technique utilised for repairing masonry, either to connect sections, seal joints, or fill voids due to its great capacity for penetration and higher mechanical strength than lime grout. In this researc...

  • Article
  • Open Access
1 Citations
2,178 Views
12 Pages

Tooth Bleaching of Discolorations Caused by Hydraulic Cements in Regenerative Endodontic Treatment: A 3-Year In Vitro Study

  • Carmen Llena,
  • Manuel Iglesias-Diaz,
  • Paula Ciscar-Muñoz,
  • Ana Belén Bataller-Martínez,
  • María Melo and
  • José Luis Sanz

7 November 2022

This study aimed to evaluate the color change caused by hydraulic cements after 3 years in vitro by simulating their use in regenerative endodontic treatment (RET) and to quantify the color change after external bleaching with 40% hydrogen peroxide a...

  • Article
  • Open Access
280 Views
17 Pages

Application of Geo-Bag and Cement Concrete Blocks in Riverbank Erosion Control: A Study of Satkhira Koyra

  • Abdullah Hil Safi Sohan,
  • Md Imran Hossain,
  • Abu Sayed,
  • Arko Suryadip Dey and
  • Peiyong Ni

19 December 2025

Riverbank erosion is a significant natural disaster that is prevalent in the deltaic regions in Bangladesh, resulting in loss of land, crops, and settlements. This research work is concentrated on the Satkhira Koyra area and is oriented towards a com...

  • Article
  • Open Access
870 Views
16 Pages

2 April 2025

As part of this study, mechanical property tests were carried out at different stages with different curing temperatures to elucidate the effect of temperature on the mechanical properties of concrete. The curing temperatures were laboratory curing t...

  • Article
  • Open Access
35 Citations
4,533 Views
16 Pages

23 June 2020

This study aims to develop a novel mine backfill material called foam mine fill (FMF). A cellular structure is achieved by incorporating a premade foam into the backfill mixture using an air-entraining agent. FMF samples were prepared with copper-nic...

  • Article
  • Open Access
5 Citations
1,235 Views
19 Pages

24 December 2024

Cemented paste backfill (CPB) is a cemented void filling method gaining popularity over traditional hydraulic or rockfill methods. As mining depth increases, CPB-filled stopes are subjected to higher confining pressures. Due to the soil triaxial appa...

  • Article
  • Open Access
2 Citations
885 Views
20 Pages

8 March 2025

Cemented tailings backfill (CTB) plays an important role in mine filling operations. In order to study the long-term stability of CTB under the dynamic disturbance of deep wells, ultrafine cemented tailings backfill was taken as the research object,...

  • Article
  • Open Access
6 Citations
4,135 Views
20 Pages

5 December 2024

A cementitious paste fill (CPF) ensures the long-age stability of underground cavities. Recently, superplasticizers, specifically ones that are polycarboxylate ether-based, have been incorporated to enhance CPF performance, yet their long-term effect...

  • Article
  • Open Access
3 Citations
3,599 Views
19 Pages

Antibacterial Activity of Root Repair Cements in Contact with Dentin—An Ex Vivo Study

  • Andreas Koutroulis,
  • Håkon Valen,
  • Dag Ørstavik,
  • Vasileios Kapralos,
  • Josette Camilleri and
  • Pia Titterud Sunde

11 October 2023

This study assessed the antibacterial characteristics of the dentin/material interface and dentin surfaces exposed to experimental hydraulic calcium silicate cement (HCSC) with or without bioactive glass (BG) replacement (20% or 40%) or mixed with a...

  • Article
  • Open Access
2 Citations
1,639 Views
34 Pages

Study on Static Mechanical Properties and Numerical Simulation of Coral Aggregate Seawater Shotcrete with Reasonable Mix Proportion

  • Yuxuan Peng,
  • Liyuan Yu,
  • Wei Li,
  • Tao Zhang,
  • Linjian Ma,
  • Dongyang Wu,
  • Changan Wu and
  • Linjie Zhou

15 May 2024

This study aims to explore the static mechanical characteristics of coral aggregate seawater shotcrete (CASS) using an appropriate mix proportion. The orthogonal experiments consisting of four-factor and three-level were conducted to explore an optim...

  • Article
  • Open Access
1 Citations
796 Views
28 Pages

30 June 2025

Cement–based mortars are essential in both modern construction and heritage conservation, where balancing mechanical strength with material compatibility is crucial. Mortars containing ––binders with low hydraulic activity, such as...

  • Article
  • Open Access
627 Views
34 Pages

20 October 2025

Fluid flow prediction in clastic heterogeneous reservoirs is a universal issue, especially when diagenetic development supplants structural and depositional controls. We consider this issue in the Middle Miocene Belayim Formation of the Gulf of Suez,...

  • Article
  • Open Access
6 Citations
3,109 Views
28 Pages

Optimizing Soil Stabilization with Chitosan: Investigating Acid Concentration, Temperature, and Long-Term Strength

  • Runshen Wang,
  • Dominic E. L. Ong,
  • Hossein Sadighi,
  • Mohammad Goli,
  • Peng Xia,
  • Hadi Fatehi and
  • Tianchi Yao

9 January 2025

Civil and geotechnical researchers are searching for economical alternatives to replace traditional soil stabilizers such as cement, which have negative impacts on the environment. Chitosan biopolymer has shown its capacity to efficiently minimize so...

  • Article
  • Open Access
10 Citations
3,535 Views
27 Pages

27 July 2022

Studies related to oil and gas wells have attracted worldwide interest due to the increasing energy shortfall and the requirement of sustainable development and environmental protection. However, the state of oil and gas wells in terms of research ch...

  • Article
  • Open Access
26 Citations
5,117 Views
33 Pages

25 September 2019

The efficiency of carbon utilization and storage within the Pennsylvanian Morrow B sandstone, Farnsworth Unit, Texas, is dependent on three-phase oil, brine, and CO2 flow behavior, as well as spatial distributions of reservoir properties and wettabil...

  • Article
  • Open Access
4 Citations
2,087 Views
19 Pages

Experimental Study on Pulsed Plasma Stimulation and Matching with Simulation Work

  • Mina Khalaf,
  • M. Soliman,
  • S. M. Farouq-Ali,
  • Craig Cipolla and
  • Ron Dusterhoft

31 May 2024

Plasma stimulation is a form of waterless fracturing as it requires that only the wellbore be filled with an aqueous fluid. The technique creates multiple fractures propagating in different directions around the wellbore. The intent of this paper is...