Предмет: Математика, автор: asdgjatnmasdn

ПОМОГИТЕ СРОЧНО ПРОШУ ВАС

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Ответы

Автор ответа: dasha67914
0

Ответ:

10

Пошаговое объяснение:

нужно найти модуль каждого числа и сложить эти модули, то есть 3+7=10

Похожие вопросы
Предмет: Английский язык, автор: ozerskayatanya
TASK 8 Прочитайте и переведите текст на русский язык

 

The functions of mortar

    Mortar is the matrix used in
the beds and side joints of
brick-work and for plastering walls and floors. Its
functions are
as follows:


to distribute the pressure
throughout the brickwork,


to adhere and bind together
the bricks,


3.    to act as a non-conductor
and prevent the transmission of heat, sound and moisture from one side of wall
to the other. The factors governing the choice of mortars for various purpo
ses are:


1)    strength as being a main
factor determining the strength
of the wall;


2)     porosity and capillary
characteristics as affecting the

rain-excluding
properties and durability of the wall;


3)      content of soluble salts
which determines the possibility to destruction of the masonry or brickwork.


   Mortar consists of an inert
aggregate bound by a cementing
material. The cementing material is most important in
determining the characteristics of the mortar. The usual cementing materials
used for constructional work are hydraulic limes or Portland cement.


    Clean, sharp pit sand is the
best aggregate. Old bricks,
burnt ballast or stone a ground in a mortar
mill may be used
as substitutes for sand.


    Mortar may be classified as follows:


Cement mortars



Cement-lime mortars



Lime-mortars.


 


Ответьте письменно на вопросы:


1      
What do we call «mortar»?



2      
Can you name the factors governing
the choice of a mortar?



3      
What does mortar consist of?



4      
What type of aggregate is the most
suitable for being used in mortars?



5      
How can be mortars classified?
СПААААСИБО!))))))))))