Results 21 to 30 of about 1,029,754 (340)

Resistance Properties to Chloride Ingress of Standard-Cured Concrete Made with an Admixture Incorporating Rich SiO2 and Al2O3

open access: yesInternational Journal of Concrete Structures and Materials, 2020
In regions where the concrete structures are exposed to a salty environment, the concrete requires high resistance to chloride-ion penetration. To achieve higher resistance against chloride ingress, a pozzolanic admixture incorporating a high volume of ...
Koichiro Yamato   +3 more
doaj   +1 more source

Possibilities of using the ultrasonic wave transmission method to estimate initial setting time of cement paste [PDF]

open access: yes, 2008
In this paper, the applicability of the ultrasonic wave transmission method to estimate the initial setting time of an arbitrary cement paste is discussed. Ultrasonic pulse velocity measurements were fully automated and measured continuously.
Chotard   +19 more
core   +2 more sources

Recomendaciones prácticas para los ensayos de cemento

open access: yesMateriales de Construccion, 1956
No ...
A.S.T.M. Committee C-1 on Cement
doaj   +1 more source

BCSA Rawmix Design: Correlation between Chemical Constituents and Mineralogy

open access: yesASEAN Journal on Science and Technology for Development, 2021
The cement industry has been identified as one of the main contributors to climate change due to greenhouse gas emissions, mainly CO2. Therefore, to meet CO2 reduction targets, cement producers are working on different strategies of minimizing its ...
Suresh Palla   +4 more
doaj   +1 more source

Hemiarthroplasty: To Cement or not to Cement? A Preliminary Report

open access: yesHIP International, 2004
Two hundred hemiarthroplasties were studied to compare uncemented Austin Moore and cemented Thompson's prostheses. The following variables were compared: pre-operative mobility, ASA grade, Abbreviated Mental test scores, surgeon grade, peri-operative mortality, infection rate, operation time, intra-operative fractures, dislocation rate, thigh pain and
Shewale, S, Pandit, H, Latham, J
openaire   +4 more sources

Preparation, physical-chemical characterisation and cytocompatibility of calcium carbonate cements [PDF]

open access: yes, 2006
The feasibility of calcium carbonate cements involving the recrystallisation of metastable calcium carbonate varieties has been demonstrated. Calcium carbonate cement compositions presented in this paper can be prepared straightforwardly by simply mixing
Aizenberg   +67 more
core   +2 more sources

Photocatalytic Activity and Mechanical Properties of Cements Modified with TiO2/N [PDF]

open access: yes, 2019
In this paper, studies of the mechanical properties and photocatalytic activity of new photoactive cement mortars are presented. The new building materials were obtained by the addition of 1, 3, and 5 wt % (based on the cement content) of nitrogen ...
Janus, Magdalena   +5 more
core   +1 more source

Motivational factors affecting informal women entrepreneurs in North-West Province

open access: yesThe Southern African Journal of Entrepreneurship and Small Business Management, 2017
Background: Informal women entrepreneurs in the rural villages of North-West strive to progress from poverty to prosperity. There is a growing appreciation that the conditions that support women’s ability to start and grow ventures may be different from ...
Sanchen Henning, Kabira Akoob
doaj   +1 more source

Cements [PDF]

open access: yesScientific American, 1901
n ...
openaire   +2 more sources

PENGARUH RENDAMAN MORTAR DENGAN MENGGUNAKAN AIR LAUT DAN AIR TAWAR TERHADAP KUAT TEKAN, ABSORPSI, DAN POROSITAS [PDF]

open access: yes, 2023
In Indonesia the use of mortar is very popular, where in bulding construction it is always used, but in the process sometimes people are not quite right in making mixtures for mortar.
Fanani, Rifki Zaharul
core  

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