Experiments Has been made on lime mortar which have a weak
resistance so we added materials like pozolan, and bricks to
improve the mechanical properties of the mixture, as we added
fiberglass to the mix, and study their effect on the mechanical
properties of mortar, also experiments has been made on natural
limestone which used in the construction, experiments on samples
of mural prismatic composed of stone and mortar to see pressure
strength of mural samples, and mural samples subjected to
curvature to determine tensile strength of stone walls with
limestone mortar reinforced with fiber glass.
We observed increase in the mural samples tensile strength about
73% when we added a small amount of fiber glass doesn't exceed
2% of the proportion of the existing lime in the mixture, which
shows the effective improvement in the mortar extracted
specifications.
Restoration of ancient structures is an important part of
reconstruction process which will be witnessed by our country, the
aim of this research is to improve a local manufacturers lime mortar.
This research study the impact of additions to improve
limestone mortar properties to become comparable to hydraulic
lime which is used in other countries, by using additions relative
to that were used in the old mortar, also used modern additions
like fiber glass to limit unwanted contraction in the use of
limestone mortar, , especially in arid environments.
The objective of this research is to study the effect of wood ash in
rheological properties of Self – compacting mortar (SCM). By
implemented some mixtures with different percentage from wood
ash with two kinds of cement and three kinds of super plasticizer
and study the effect in slump flow and yield stress to this
mixtures.
This paper focus on studying the elastic of modified cement mortar by polyethylene (stress-strain) curve in order to have Young's elastic modulus, this made by tri-phases modeling that allow to determination the property of this item depending on t
he property of it's three components individual.
The validation of the proposed model has been studied extensively depending on a sample of cement mortar divided into two groups, the first one patterning normal cement mortar, second patterning modified cement mortar by Polyethylene witch substitute five percentage ratio of weight of sand by the same ratio of Polyethylene.
Modified cement mortar is treated as composite of three components, Sand, Paste cement and Polyethylene. It's will be proposed models involving series, parallel and series-parallel coupling. This composite action is described by series-parallel model in which a portion of paste acts in parallel with sand and polyethylene and the remaining portion in series with this parallel coupling. Then according to the model we get Young's elastic modulus theoretically, reliance basic modulus factors of components.
The proposed model is calibrated and verified by means of data set by experiment modulus results perform on cast samples in laboratory.
It was found quite agreement of measured modulus factors experimentally versus theoretically.
Manufacturing processes are the main source of waste materials, however the increasing awareness about the environment has tremendously contributed to the concerns related with disposal of the generated wastes. Solid waste management is one of the ma
jor environmental concerns in the world. With the scarcity of space for land filling and due to its ever increasing cost, waste utilization has become an attractive alternative to disposal.
Research is being carried out on the utilization of waste products in concrete. Such waste products include discarded tires, plastic, glass, and coal combustion by-product. This paper presents a detailed review about recycled plastics (polyethylene), as aggregates to cement mortar by replace equivalent weight of sand by plastic in regular specimen and watch its effect on the property of mortar include compressive strength, splitting tensile
strength, absorption and heating effect. It is clear that compressive strength, splitting tensile strength decreased with increase in plastic content but this property increases by exposing samples to high temperatures.
