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Register a new userThe combined Influence of Lime and Natural Pozzolana Additives on Enhancement of Clayey Soil Compaction, Consistency characteristics and restriction on soil shrinkage
التأثير المِترك للكلس و البوزولانا الطبيعية في تحسين خواص الرص القوام و الانكماش الخطي للتربة الغضاريّة
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يعد تأمين استقرار الترب الغضارية التي تصادف في أساسات الطرق و الأبنية من أولويات المهام التي تواجه المهندس المدني. تهدف هذه الدراسة إلى دراسة تأثير الإضافات الفلزية في تحسين مواصفات الترب الغضارية. تمت دراسة اثر إضافات الكلس أو البوزولانا الطبيعية أو كليهما معاً في تحسين خواص الرص و القوام و كذلك تقييد ظاهرة الانكماش في التربة الغضارية.
Being critical, the stability of clayey soil, is a priority for the civil engineer in constructions of roads and buildings. This experimental study comes in the context of examination of the effectiveness of menial stabilizers. Lime (L), Natural Pozzolana (NP), and Combinations of both, were examined to enhance the characteristics of compaction, consistency and to restrict the shrinkage behavior of clayey soil.
References used
Al-RAWAS, AA. GOOSEN, MFA 2006- Expansive soil-recent advances in characterization and treatment, London, taylor & Francis group
HOSSAIN, KMA. LACHEMI, M. EASA, S. 2007- Stabilized soils for construction application incorporating natural resources of Papua New Guinea, Resources, Conservation and Recycling Vol. Nr. 51:711-731
GUNEY, Y. SARI, D. CETIN, M. TUNCAN, M. 2007- Impact of cyclic wetting-drying on swelling behavior of lime-stabilized soil, Building and Environment Vol. Nr. 42: 681-688
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In this research an experimental study has been carried out
to investigate the enhancement of Bosra Alsham´s soil (120 km
south Damascus) by using crushed glass wastes additives by using
experimental approach. The soil samples were taken from Bosr
a
(2m underground surface), which is classified as highly plastic
clayey soil CH according to unified classification.
In this research the influence of the fineness of natural
pozzolana and lime on the properties of compaction ,
unconfined compressive strength and linear shrinkage of
clayey soil was experimented the finessess of natural pozzolana
used in this re
earch were 3500,4000,4500 cm²/g , finessess of
lime 4000 , 5000 , 6000 cm²/g.
Laboratory program was conducted on different clayey soils to
determine linear modulus of elasticity, and to compare the results
with those concluded from field plate load testing.
The use of chemical additives has been determined to be an important method for enhancing
some properties of cement paste and concrete.
These additives include plasticizers or superplasticizers with varieties of inorganic accelerators
for hardenin
g, or sometimes some organic agents are also used to enhance the cement
properties.
Recently, there is an increase in the study and use of complex chemical additives. These
additives in combination can enhance each others basic positive effects.
This paper refers to the cement with high dispersion that contains natural mineral filler, which
is considered a connective composite material with properties related to the composition, to the
proportion of raw materials, to the milling technique, and to the effect resulting from chemical
additives and their role in the plasticizing process which is a more complex process. This study
targets the use of the modified cement in soil improvement, especially to enhance debilitated
soils.
The research was carried out at Al-Qamishli Agricultural Research Center, GSAR,
Syira, during the seasons 2011, 2012 and 2013, in order to estimate the effect of
adding different levels of a crude Zeolite (T2-20 tons/ha, T3- 40 tons/ha, in addition
to the control (without adding Zeolite T1), on wheat productivity within a bilateral
crop rotation was followed, consisted of wheat and chickpea, and on the content of
nitrogen, phosphorus and potassium in the surface layer of the soil .The research
was conducted using Complete Randomized Block Design with three replicates.
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