Results 21 to 30 of about 1,223 (183)

Properties of furfuryl alcohol resins for conventional sand moulding and binder jetting applications [PDF]

MATEC Web of Conferences, 2022
This paper compares two commercial acid-cured furfuryl alcohol resins. The first material is used for conventional sand moulding (CSM), while the second material was manufactured for the binder jetting process (BJP) using a Voxeljet VX 1000 printer.
Tshabalala Neo V., Nyembwe Kasongo D.
doaj   +1 more source

The Research on Characterization of Crushability for Foundry Sand Particles

Archives of Foundry Engineering, 2017
In this paper, crushability of foundry sand particles was studied. Three kinds of in-service silica sands in foundry enterprises selected as the study object, and foundry sand particles were subjected to mechanical load and thermal load during service ...
Dai Yu, Ma Quan-yang, Li Xiao-hua, Zhang Xi, Hu Fa-ping, Zhang Yun, Xie Wei-dong   +6 more
doaj   +1 more source

Research on forming method of additive manufacturing of frozen sand mold

Heliyon, 2023
In order to promote the green and sustainable development of the foundry industry, it is necessary to further explore new methods and technologies for green foundry. This paper innovatively proposes a method of additive manufacturing of frozen sand mold,
Haoqin Yang, Zhongde Shan, Dandan Yan, Jianpei Shi, Qinjiang Liu   +4 more
doaj   +1 more source

Sustainable utilization of discarded foundry sand and crushed brick masonry aggregate in the production of lightweight concrete

Engineering Structures and Technologies, 2017
Nowadays, there is a considerable shortage in the availability of river sand and natural stone aggregate for the construction activities all around the globe and the way out is being worked out by the use of discarded foundry sand and crushed brick ...
Gireesh Mailar, Sujay Raghavendra N., Parameshwar Hiremath, Sreedhara B. M., Manu D. S.   +4 more
doaj   +1 more source

Investigation into the Heat of Hydration and Alkali Silica Reactivity of Sustainable Ultrahigh Strength Concrete with Foundry Sand

Advances in Materials Science and Engineering, 2017
This study presents the hydration reactivity and alkali silica reaction (ASR) of ultrahigh strength concrete (UHSC) that has been made more sustainable by using spent foundry sand.
Federico Aguayo, Anthony Torres, Tate Talamini, Kevin Whaley   +3 more
doaj   +1 more source

Dilatometric Characterization of Foundry Sands

Archives of Foundry Engineering, 2012
Dilatometric Characterization of Foundry Sands The goal of this contribution is summary of physical - chemistry properties of usually used foundry silica and no - silica sands in Czech foundries. With the help of dilatometry analysis theoretical assumptions of influence of grain shape and size on dilatation value of sands were confirmed ...
M. Břuska, J. Beňo, M Cagala, V Jasinková   +3 more
openaire   +1 more source

Social, Technological, Economic, and Policy Factors in the Circular Economy Transition in Brazil

Sustainable Development, EarlyView.
ABSTRACT A well‐functioning circular economy (CE) integrates resilience across economic, environmental, and social dimensions. This study identifies key drivers and barriers to Brazil's CE transition through 20 semi‐structured interviews with stakeholders. Major sociocultural barriers include inadequate education and limited CE awareness, while growing
Alejandro Gallego‐Schmid, Ana Belén Guerrero, Ricardo Rebolledo‐Leiva, Alvaro Elorrieta‐Mendoza, Denisse Milagros Paredes Cotohuanca, Raphael Ricardo Zepon Tarpani, Rodrigo Salvador, Murillo Vetroni Barros, Claudia E. Henninger, Leonardo Vásquez‐Ibarra   +9 more
wiley   +1 more source

Effect of the Changes in Bulk Density and Granulometric Properties on the Strength Properties of the Moulding Sand Mixtures

International Journal of Engineering and Management Sciences, 2020
Foundry technology uses a lot of several natural materials. Sands use for preparing mixtures whereby making moulds or cores. Sand is defined as a granular, refractory major portion of mixture (90 – 98% in dependence on used binder).
Henrietta Hudák, László Varga
doaj   +1 more source

The clashing of in situ and pre‐cast technologies—Western trends and local traditions in concrete engineering shaping shell construction in 20th‐century Hungary

Structural Concrete, EarlyView.
Abstract After a blossoming pre‐World War II (WWII) period, the concrete construction industry in then‐socialist Hungary existed in a relative isolation from the Western World during the mid‐20th century. In this paper, we focus on the body of work of one of the then newly established state‐owned design offices, IPARTERV, to show how the isolation ...
Orsolya Gáspár, Péter Haba
wiley   +1 more source

Waste foundry sand. Environmental implication and characterization

Geologia USP. Série Científica, 2012
This paper presents the results of analyses using Scanning Electron Microscopy in field samples of waste foundry sand, as well as the results of granulometric, chemical and groundwater analyses. Field data allowed to characterize waste foundry sand and showed that there are elevated concentrations of metals in the groundwater (iron, manganese, boron ...
Gabriela Penkaitis, Joel Barbujiani Sígolo   +1 more
openaire   +3 more sources