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Abdullah M. Zeyad

Bio: Abdullah M. Zeyad is an academic researcher from Jazan University. The author has contributed to research in topics: Compressive strength & Materials science. The author has an hindex of 15, co-authored 40 publications receiving 824 citations. Previous affiliations of Abdullah M. Zeyad include University of Science and Technology, Sana'a & Universiti Sains Malaysia.

Papers published on a yearly basis

Papers
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Journal ArticleDOI
TL;DR: In this paper, the engineering and transport properties of high-strength green concrete (HSGC) containing up to 60% of ultrafine palm oil fuel ash (POFA) have been studied.

234 citations

Journal ArticleDOI
TL;DR: In this article, the effect of using nano cotton stalk ash (NCSA) and palm leaf ash (PLA) as partial replacements to cement in ultra-high performance concrete (UHPC) was investigated.

133 citations

Journal ArticleDOI
TL;DR: In this article, the chemical and physical characteristics of ultrafine POFA (U-POFA) utilized in HSC x were investigated along with its concomitant fresh, strength and durability characteristics compared to ordinary Portland cement based type (OPC-HSC).

131 citations

Journal ArticleDOI
TL;DR: In this article, the partial replacement of volcanic pumice powder (VPP) for use as a supplementary cementitious material was investigated for use in high-strength concrete mixtures, and several tests, including slump, compressive strength, indirect tensile strength, flexural strength, water absorption, initial surface absorption and sorptivity, were conducted to evaluate HSC performance.
Abstract: In this paper, the partial replacement of volcanic pumice powder (VPP) was investigated for use as a supplementary cementitious material. High-strength concrete (HSC) was prepared using two sets of VPP (10% and 20%) incorporated with three sets of polypropylene fiber (PF) (0.20%, 0.35%, and 0.50%) to produce different concrete mixtures. Several tests, including slump, compressive strength, indirect tensile strength, flexural strength, water absorption, initial surface absorption, and sorptivity, were conducted to evaluate HSC performance. Results showed the prepared specimens with 10% cement replacement with VPP and 0.20% PF content indicated a slight increase in compressive strength compared with the control concrete at later ages. Indirect tensile and flexural strengths were optimized at 10% VPP replacement with 0.50% PF content. Furthermore, adding PFs to mixes increased indirect tensile and flexural strength but decreased slump. The sorptivity test indicated low water soaking due to VPP content in the mixes compared with the control mix (HSC); it declined as the replacement of VPP increased. The different standard tests on mixes depicted favorable results and good prospects for the inclusion of VPP in HSC structures.

98 citations

Journal ArticleDOI
TL;DR: In this paper , the authors present a new material that can be used as a partial substitute for cement in the production of ultra high performance concrete (UHPC), which is an industrial waste product of ferrosilicon (FS) alloy, available as furnace slag.

98 citations


Cited by
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Reference EntryDOI
31 Oct 2001
TL;DR: The American Society for Testing and Materials (ASTM) as mentioned in this paper is an independent organization devoted to the development of standards for testing and materials, and is a member of IEEE 802.11.
Abstract: The American Society for Testing and Materials (ASTM) is an independent organization devoted to the development of standards.

3,792 citations

Journal ArticleDOI
TL;DR: In this paper, the authors examined experimentally the mechanical properties and permeability characteristics of the interface between normal concrete (NC) substrate which represents old concrete structures and an overlay of ultra high performance fiber concrete (UHPFC) as a repair material.

290 citations

Journal ArticleDOI
TL;DR: In this article, the effects of exposing palm oil fuel ash (POFA)/fly ash (FA) based geopolymer mortar to elevated temperatures at early stage in terms of microstructural and compressive strength was presented.

241 citations

Journal ArticleDOI
TL;DR: In this paper, the authors discuss the key factors affecting zeolite synthesis, primarily from coal fly ash; the drawbacks of each approach are also analysed, and the characterization and potential applications of these materials are analyzed in detail through reference to the numerous studies published on fly ash worldwide over the last number of decades.

232 citations

Journal ArticleDOI
TL;DR: The increasing demand for green concrete has been spurred by demand for high quality concrete products, desire of nations to reduce green-house gas emission, need for conservation of natural resources and limited landfill spaces as mentioned in this paper.

221 citations