Canadian Clay Products, Inc.

Canada's Major Bentonite Producer


What is Bentonite?

Bentonite Sealant

Sealant Systems






animal feed binder

granular sealant

drilling mud

high viscosity drill mud

flocculant aid

stucco and mortar

foundry sand binder


An exceptional plasticizer for all your
Stucco and Mortar mixes

What is Eze-Trowel?

Eze-Trowel™ is a high performance stucco and mortar plasticizer. It can be used as an admixture in all stucco and mortar mixes.   Eze-Trowel™ replaces lime, soaps, air entraining agents and other plasticizing materials. 

The ingredients in Eze-Trowel™ are designed to function with the common ingredients of stucco and mortar mixes to retain water and produce an easy working mix that requires less tempering. 

When using Eze-Trowel™ in the mix, your stucco or mortar mixes: 

  • shrink considerably less 
  • are non-toxic, non irritating 
  • are smooth and easy to trowel 
  • require less tempering 
  • have longer box life 
  • do not crack as much 
  • are easy to handle 
Applications should determine the level of Eze-Trowel™ to be added to their mix formula to give the desired handling characteristics. We suggest addition rate of 0.5 to 3.0 kg of Eze-Trowel™ per 40 kg bag of Portland Cement.  Eze-Trowel™ comes in 25kg multi-wall paper bags. 

Eze-Trowel™ cannot be used in conjunction with any other plasticizer or air entraining agent. 

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Why is it better than lime and other plasticizing materials?
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What makes it an ultimate admixture for stucco and mortar

For the Stucco Contractor

Easy to Trowel 

  • Eze-Trowel™ added to Portland Cement and sand produces a smooth adherent stucco mix. Eze-Trowel™ is a highly efficient plasticizer, the mix is workable, cohesive, and in some cases can be applied to dry surfaces eliminating the need to priming. 
Replaces Asbestos 
  • Eze-Trowel™ retains moisture, is a natural lubricator and can be stored for hours in the box without additional tempering. Due to Eze-Trowel’s™ moisture retention capabilities and plasticizing effect, there is no need to add asbestos. This saves the contractor money and eliminates the possibility of potential health problems related the use of asbestos. 
  • Eze-Trowel™ is ideal for the stucco contractor who uses mechanical equipment for applications. The appearance of the finished product is excellent. Eze-Trowel™ replaces both hydrated lime and asbestos in stucco and is non-toxic so burns and irritations common to the use of lime are eliminated. 
Easy to Mix 
  • The mix recommend for the scratch coat is 1.4 kg (3lbs) of Eze-Trowel™ added to 1 bag of Portland Cement and sand. 2.7 kg (6lbs) of Eze-Trowel™ should be added to each bag of Portland Cement and sand for the finish coat. 
Eze-Trowel™ is easier to handle, transport and store than conventional plasticizers. The contractor spends much less time priming and tempering. Eze-Trowel™ saves the contractor both time and money. 

For The Mason Contractor


  • Eze-Trowel™ is a highly effective mortar plasticizer offering the Mason better workability at a lower cost. Mortar made with Eze-Trowel™ is smooth and workable. The mortar adheres to the surfaces of brick and block, the Mason can strike a clan joint. Joints are easily tooled with Eze-Trowel™ and there is an improved flow the cross joints. Efflorescence is minimized with Eze-Trowel™. 
Replaces Hydrated Lime in Mortar 
  • Masons have traditionally added plasticizers such as hydrated lime to improve the workability of mortar. However Eze-Trowel™ is a much more efficient plasticizer, replacing hydrated lime in mortar at a lower cost to the mason contractor. 
Exceptional Mortar 
  • Eze-Trowel™ contains air entraining agents and other minerals naturally compatible with the basic ingredients of mortar. Mortar made with Eze-Trowel™ is exceptionally pliable and has high strength and low shrinkage characteristics. Eze-Trowel™ holds both the air and the water in the mortar so shrinkage (volume change) is minimized. 
A Little Goes a Long Way 
  • 2.7 kg (6lbs) of Eze-Trowel™ usually replaces one 25 kg bag of gyrated lime. Therefore, the Mason Contractor only needs one 25 kg bag of Eze-Trowel™ to replace approximately 9 bags of lime. 


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Mix It Fast and Easy!
Mixing Directions

Follow these directions to get maximum workability:

Step 1: Start Mixer

Add Eze-Trowel™, Portland Cement, ½ of the sand and about ½ of the water.

Step 2: Mix for 2-3 minutes.

Step 3: With mixer running add remaining sand and water.

Step 4: Mix until mortar has desired workability.

NOTE:  To develop maximum workability, mix for a total of 6-8 minutes.
  Mortar Type
Compressive Strength
At 7 days
At 28 days
CSA Standard



Tested by

Portland Cement Association

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Physical Properties of Eze-Trowel™ (check out Test Results)


The material identified as Eze-Trowel™ was received by:


A Division of The Portland Cement Association

5420 Old Orchard Road

Skokie, Illinois 60077 U.S.A.


To compare two mortars, Types M and S, as prepared with conventional Portland cement, lime and sand, and as prepared with Portland cement, Eze-Trowel™ and sand.

Test Procedures

The mortars prepared with Eze-Trowel™ were tested according to CSA A179M "Mortar for Unit Masonry" for water retention, cube compressive strength, time of set, air content and autoclave expansion.

A tensile bond strength test as developed for the Portland Cement Association by W.H. Kuenning was used to compare the bonding characteristics of these mortars. In this test method a couplet made of two half-bricks is subject to direct tension. 

Four wallettes were constructed to evaluate the effectiveness of these mortars when subjected to 50 freeze-thaw cycles. The back, sides and top of the wallettes were covered with a n impermeable coating of epoxy. The cured specimen was placed face down, on ¼ inch square rods, in a container of cold water for a 24-hour period and then stored in air in a freezing chamber (0° F) for 16 hours. The specimen was then placed face down in room temperature water for an 8-hour period and returned to the freeze chamber for 16 hours. This 8-hour thaw in water and 16-hour freeze in air cycle was repeated for a total of 50 cycles. 

An evaluation of the brick characteristics was performed according to CAN3-A82.2-78 "Methods of Sampling and Testing Brick."

Test Results

Evaluation According to CSA A179M – "Mortar and Grout for Unit Masonry"

Eze-Trowel™ was used as a replacement for lime but 1/3 of the normal amount was used.
Type M mortar 1PC: 1/12 Clay: 3 ¾ Sand Type S mortar 1PC : 1/6 Clay : 4 ½ Sand
500 grams Type I Portland cement  500 grams Type I Portland cement
17 grams of Eze-Trowel™ (density 2.35) 34 grams of Eze-Trowel™
1706 grams of laboratory sand 2048 grams of laboratory sand
108% flow with 260 ml of water  110.5% glow with 315 ml of water

    Type M Type S
Cube Compressive Strength

Initial Set

Final Set

Autoclave Expansion, %

Air Entrainment, %

7 day

28 day




2hr 30min

4hr 15min






2hr 15min

4hr 45min



Water Retention

Flow, %

Flow after Suction, %

Water Retention, %







Specimen Fabrication

Five couplets and a wallette for each mortar type and composition were fabricated from the same batch of mortars by this writer who is an experienced bricklayer. The couplets were two half bricks and the wallettes were 21/2 brick wide (21 in.) and three brick high (7.5 in.).

Mortar for the fabrication of these specimens was prepared in a Lancaster mixer. All materials were mixed for 10 minutes after the last water was introduced to the mix. Water was gauged by eye by the bricklayer. Mortar proportions were as follows:
  Type M Type S
Type I Portland Cement, lbs

Type S lime, lbs

Eze-Trowel™, lbs

Mason Sand, lbs

Flow (cone penetrometer), mm

















Specimen Storage

Couplets and wallettes were loosely covered with polyethylene film as a protection from drafts and retained in a storage room with temperature of 75° ± 5° F for 28 days before testing. 


Test Results – Direct Tension
  Type M

Portland Cement and Lime

Type M

Portland Cement


  Type S

Portland Cement and Lime

Type S

Protland Cement 


Couplet (psi) (psi) Couplet (psi) (psi)
1 140 195 1 120 200
2 135 235 2 100 250
3 180 160 3 110 280
4 120 225 4 140 340*
5 125 190 5 135 245
Average 140 200 Average 120 245

  • result not used – epoxy bond in core of brick.
Test Results – Freeze-Thaw of Wallettes

All four wallettes completed 50 cycles of freeze-thaw without any cracking, spalling or chipping of any kind. Both Type M specimens had a hairline step crack that was caused by handling procedures. 

Test of Clay Brick as Per CAN3-A82.2 – 78


Length Average - 8.09  

Width Average  - 3.70

Depth Average - 2.26

Average core diameter 1.3724 inches, 3 cores per brick. 

Compressive Strength Average – 15,550 psi. 
Initial Rate of Absorption - 2.6 grams.


  • 24-hour Saturation, Average – 3.7%
  • 5-hour Boil, Average – 4.3%
  • Saturation Coefficient – 0.86

Modulus of Rupture Average 2600 psi.


  • Four specimens efflorescenced on bed and face surfaces. One specimen exhibited "no efflorescence."

Freeze – Thaw

All specimens had identical weights after 50 cycles of freeze-thaw as they did before the test, indicating no change or damage. 


The mortar characteristics as tested per A179M are all satisfactory and compare well with conventional mortar systems. The water retention of Eze-Trowel™ Type M is marginal but acceptable. 

The result of the direct tension test show that both Eze-Trowel™ mortars show a significantly higher bond strength than their cement and lime counterparts. Type S with Eze-Trowel™ was 100% higher and Type M with Super Spread was 43% greater than the cement and lime mortar. 


The bricks used in this research were of good quality and suffered no damage during the freeze-thaw testing.


Types M and S mortars prepared with Eze-Trowel™ exhibited good handling characteristics, compliance with current standards of evaluation, superior bond strength and the ability to resist freeze-thaw. 

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P.O. Box 70
Wilcox, Saskatchewan S0G 5E0
Phone: (306)732-2085
Fax: (306)732-2100
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