生土砂浆的水力学特性-稳定水泥和石灰

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2022-12-01 DOI:10.2478/jaes-2022-0027
M. Messis, A. Benaissa, N. Bouhamou
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引用次数: 1

摘要

摘要土基砂浆再次取代了它们作为建筑材料的地位,用于抹灰、粉刷和修复土墙,不仅在可持续的背景下,而且在效率方面。然而,对这些迫击炮的科学了解仍然很少。本文报道了在El Bayadh大学中心实验室进行的一项实验研究,该研究涉及砂浆基原土和稳定土的水力力学特性。在此过程中,研究了用粘土砂土制备的砂浆,用水泥(C)(6%、8%和10%)、石灰(L)(4%、6%和8%)处理,以及用两种粘合剂处理的砂浆(4%C+2%L、5%C+4%L、8%C+6%L),同时考虑到生土的控制砂浆。测定压缩和拉伸百分比强度、总吸收和溶胀。因此,在全吸收试验的情况下获得的结果表明,用水泥弱稳定的砂浆试样和未添加稳定剂的砂浆试样具有显著的侵蚀性。事实上,在膨胀试验过程中观察到,用水泥弱稳定的砂浆试样对侵蚀性水很脆弱,并且表现出退化,尤其是在边缘。此外,将水泥含量从6%提高到10%,吸水率降低了30%。看来,导致对水具有更好性能的组合物是混合组合(8%水泥+6%石灰)。然而,与石灰粉相比,水泥的稳定性赋予了更高的强度。事实上,对于高水泥用量(分别为8%和10%)和4%石灰用量,获得了最大阻力。
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Hydromechanical Characterization of Raw Earth Mortar – Stabilizing Cement and Lime
Abstract Earth-based mortars are again taking their place as building materials for plastering, rendering and repairing earth walls, not only in a sustainable context but also in terms of efficiency. Nevertheless, scientific understanding of these mortars is still scarce. This present paper reports on an experimental study, conducted at the laboratory of the university center of El-Bayadh, concerning the study of the hydro-mechanical characteristics of mortars based raw and stabilized earth. In doing so, mortars prepared with clay-sand soil, treated with cement (C) (6%, 8% and 10%), lime (L) (4%, 6% and 8%) and mortars treated with both binders (4% C+2% L, 5% C +4% L, 8% C+6% L) taking into account control mortars of raw earth, are investigated. Compressive and tensile percentage strengths, total absorption, and swelling are determined. Therefore, the obtained results in the case of total absorption test, showed significant erosion in the mortars specimens weakly stabilized with cement and those without added stabilizer. Indeed, it was observed during the swelling test that the mortars specimens weakly stabilized with cement were fragile to the erosive water and showed deterioration, especially at the edges. Furthermore, increasing the cement content from 6% to 10%, the water absorption percentage was reduced by 30%. It appears that the composition that led to a better behavior towards water is the mixed combination (8% cement + 6% lime). However, stabilization with cement confers a higher strength compared to lime powder. In fact, the maximum resistances were obtained for high cement dosages (8 and 10% respectively) and the 4% lime dosage.
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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