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Mineralogy, Physical and Mechanical Properties of Adobes Stabilized with Cement and Rice Husk Ash 水泥和稻壳灰稳定土坯的矿物学、物理力学性能
Pub Date : 2019-01-24 DOI: 10.11648/J.SJC.20190701.11
Issiaka Sanou, M. Seynou, L. Zerbo, R. Ouedraogo
A Burkina Faso clay referenced SAB has been characterized to be used as raw material in the making of adobes. Mineralogical studies (by XRD, DTA-TG), chemical and geotechnical studies (Atterberg limits, particle size distribution) carried out on this clay have shown that it is composed of kaolinite (62 wt%), quartz (30 wt%) and goethite (18 wt%). It is a sandy-silty clay of medium plasticity containing no swelling minerals. Its particles are mainly clay (19 wt%), silt (36 wt%), fine and coarse sand (45 wt%). It is thus suitable for the development of adobes for habitats. The adobes elaborated with SAB clay have been stabilized with an optimal cement content of 10 wt%, which offers a mechanical strength greater than 2 MPa; minimum value for single-level constructions. In order to improve the physical properties (density, porosity, water absorption by capillarity, erosion resistance, compressive and flexural strengths) of these adobes and to reduce cement consumption as much as possible, the cement (10 wt%) was partially or totallysubstitutedby rice husk ash. This substitution contributed to the improvement of the physical and mechanical properties of the adobes, due on the one hand to the effect of micro-filling of the ash and on the other hand to the increase of the CSH resulting from the pozzolanic reactivity between the released portlandite by the hydration of the cement and the amorphous silica of the rice husk ash.
一种布基纳法索粘土参考SAB已被表征为用于制作土坯的原料。对该粘土进行的矿物学研究(XRD, DTA-TG),化学和岩土学研究(Atterberg极限,粒度分布)表明,该粘土由高岭石(62%),石英(30%)和针铁矿(18%)组成。它是一种中等塑性的砂质粉质粘土,不含膨胀矿物。其颗粒主要是粘土(19 wt%),淤泥(36 wt%),细砂和粗砂(45 wt%)。因此,它适合开发土坯作为栖息地。采用SAB粘土制备的土坯在最佳水泥掺量为10 wt%时稳定,其机械强度大于2 MPa;单层结构的最小值。为了改善这些土坯的物理性能(密度、孔隙率、毛细吸水性、抗侵蚀性、抗压和抗折强度),并尽可能减少水泥的消耗,将10 wt%的水泥部分或全部替换为稻壳灰。这种替代一方面是由于灰的微填充作用,另一方面是由于水泥水化释放的硅酸盐与稻壳灰的无定形二氧化硅之间的火山灰反应性增加了CSH,从而改善了土坯的物理力学性能。
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引用次数: 4
Nutritional Composition of Fatty Acids and Amino Acids of the Fermented Scomberomorus tritor in Benin 贝宁发酵黑森菌脂肪酸和氨基酸的营养组成
Pub Date : 2019-01-01 DOI: 10.11648/j.sjc.20190701.14
Mahouglo Barnabé Houéssou
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引用次数: 0
Synthesis, Characterization and Antimicrobial Activities of Cobalt(II), Nickel(II) and Copper(II) Complexes of Aroylhydrazone Mixed with Aspirin 钴(II)、镍(II)、铜(II)与阿司匹林复合芳酰腙配合物的合成、表征及抗菌活性
Pub Date : 2019-01-01 DOI: 10.11648/j.sjc.20190703.13
Olawale Folorunso Akinyele, Temitope Oluwatola Akinnusi, Temitope Adekunle Ajayeoba, Ayowole Olaolu Ayeni, Lateefah Moyosore Durosinmi
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引用次数: 0
A Comparative Study of Water Quality Between Hot Spring and Borehole Waters of Mara, Shinyanga and Manyara Regions of Tanzania 坦桑尼亚Mara、Shinyanga和Manyara地区温泉和井水水质比较研究
Pub Date : 2019-01-01 DOI: 10.11648/j.sjc.20190704.13
Samwel Alfred Maseke, Maheswara Rao Vegi
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引用次数: 0
Spectroscopic Investigation of the Mixture of Ascorbic Acid and Sodium Benzoate 抗坏血酸与苯甲酸钠混合物的光谱研究
Pub Date : 2019-01-01 DOI: 10.11648/j.sjc.20190703.12
Femi Francis Oloye
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引用次数: 2
Effects of Vegetable Oil Reused for Frying on the Liver of Albino Rats 重复使用植物油煎炸对白化大鼠肝脏的影响
Pub Date : 2019-01-01 DOI: 10.11648/j.sjc.20190701.12
Maduelosi Ngozi Jane
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引用次数: 0
Assessment of Chemistry of Soil Irrigated on Phuleli Canal 普勒里运河灌溉土壤化学性质评价
Pub Date : 2014-09-02 DOI: 10.11648/J.SJC.20140204.12
G. M. Mastoi, B. Waryani, Zulfiqar Laghari, Z. A. Palh, K. Lashari, K. F. Almani, G. Rana, Abdul Waheed Mastoi
Phuleli canal in Hyderabad is main water supply source for both irrigation as well as human drinking purpose. Quality of the canal deteriorates while passing through Hyderabad city,2nd largest city of Sindh ,Pakistan because highly toxic effluent from plastic factories, illigale cattle pens ,slaughterhouses and munciple sewage water are directly discharge into the phuleli canal without any treatment. Soil is a basic requirement for supporting the life on earth, but all over the world soil fertility decreasing by different ways including waste water and solid waste. In Pakistan soil is polluted by different ways out of which untreated liquid waste is main cause of soil pollution. The sewage and industrial liquid waste released in canals and streams without any treatment, which used for irrigation by which soil get polluted. This study was carried out to find out the facts about soil pollution by sewage, in this purpose Phuleli canal was selected, this canal carry the liquid waste of Hyderabad and for the desired study different parameters were investigated.
海得拉巴的普莱里运河是灌溉和人类饮用的主要水源。在经过巴基斯坦信德省第二大城市海得拉巴市时,运河的质量恶化了,因为塑料厂、非法养牛场、屠宰场和市政污水的剧毒废水直接排放到phuleli运河中,没有任何处理。土壤是地球生命赖以生存的基本条件,但在世界范围内,土壤肥力因各种原因不断下降,包括废水和固体废弃物。巴基斯坦土壤污染的方式多种多样,其中未经处理的废液是造成土壤污染的主要原因。污水和工业废液未经处理排入沟渠和溪流,用于灌溉,土壤被污染。本研究是为了找出污水污染土壤的事实,为此选择了Phuleli运河,这条运河携带海得拉巴的液体废物,并为所需的研究调查了不同的参数。
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引用次数: 2
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