Chapter 5 Construction Mortar.

Slides:

Advertisements

Similar presentations

Civil Engineering Materials

Advertisements

SHOTCRETING K.V.SUBBA RAO.

EARLY AGE COMPRESSIVE AND TENSILE STRENGTH DEVELOPMENT OBJECTIVE Determine how SCC strategies…  high paste content  VMA (thickeners)  smaller aggregate.

CONCRETE MIX-DESIGN ACI

Properties of Fresh Concrete

AGGREGATES There are two types of aggregates Coarse Aggregates

Aggregates, Cement and Concrete MSE 220 Spring, 2009.

Masonry Cement and Mortar

Presentation about Reinforced concrete

What is safe building? Life of a reinforced building lasts 50 to 100 years or longer; Safe building means it will not collapse during span of life; A.

B Persson, LTH Building Materials, University of Lund, Lund, Sweden ON THE TEMPERATURE EFFECT ON SELF-DESICCATION OF CONCRETE Experimental setup: l 250.

University of Minho School of Engineering ISISE, Department of Civil Engineering Author* EDUARDA LUSO Supervisor: Paulo B. Lourenço; Co-Supervisor: Rui.

Strength of Concrete.

Proportioning of Concrete Mixtures

Topic : MIX DESIGN OF CONCRETE Properties of concrete Submitted To: DR. AYUB ELAHI Submitted By: SOHAIB NASEER 2K9-scet-29/CIVIL M.ZAEEM FAKHAR 2K9-scet-03/CIVIL.

BondChem TECHNICAL DATA Roll-a-crete ( Three Component Cementitious Waterproof Coating ) Page 1 / 2. DESCRIPTION BondChem’s Roll-a-crete is a three component.

Introduction Small-size Hollow Block Fly Ash and Silicate Medium- size Block §6.3 Wall Blocks.

4.7.2 High-strength Concrete (HSC) Introduction –Definition –Classifications Choice of HSC raw material –Binding material –Excellent aggregate –Superplasticizer.

4.7.5 Non-dispersion Concrete in Water (NDC) Introduction Composites of NDC Properties of NDC.

Chapter 5 Construction Mortar. Chapter 5 § 5.1 Introduction Definition Applications Classifications.

Chapter 9.  Technical Requirement Technical Requirement  Technical Index Technical Index Chapter Technical Standard of Bituminous Mixture §9.5.

§4.4.6 Influencing factors Strength grade of cement W/C

There are three important definitions about strength  Cubic compressive strength of concrete  Assurance factor of concrete  Standard cubic compressive.

Absolute Humidity Parcel Size 2M cubed/Water Content 10g/Absolute Humidity 5g/m cubed. Parcel Size 1M cubed/Water Content 10g/Absolute Humidity 10g/m cubed.

JUST IN TIME MIXTURE PROPORTIONING Ken W. Day Consultant, Australia.

 Classification  Features in Influencing Concrete  Fine Aggregate-Sand  Coarse Aggregate-Gravel Aggregate.

 Classification  Features in Influencing Concrete  Fine Aggregate-Sand  Coarse Aggregate-Gravel Aggregate.

Strength grade of cement W/C Strength formula of the concrete Factors of aggregate Curing condition Testing condition §4.4.6 Influencing factors.

Chapter 3 Cement Technical Properties of Portland Cement Fineness Setting Time Soundness of the Portland Cement Strength Other properties.

Design of Concrete Structure I Dr. Ali Tayeh First Semester 2009 Dr. Ali Tayeh First Semester 2009.

–Mineral Admixture –Ordinary Portland Cement (P.O) –Portland granulated Blast-furnance-slag Cement (P.S) –Portland-Pozzlana Cement (P.P) –Portland fly-ash.

Concrete Technology Ch8: Proportioning Concrete Mixes Lecture 14 Eng: Eyad Haddad.

Strength grade of cement W/C Strength formula of the concrete Factors of aggregate Curing condition Testing condition §4.4.6 Influencing factors.

Mix design of high strength concrete, special cases in mix design Exercise 7.

–Mineral Admixture –Ordinary Portland Cement (P.O) –Portland granulated Blast-furnance-slag Cement (P.S) –Portland-Pozzlana Cement (P.P) –Portland fly-ash.

Chapter 4 Ordinary Concrete. Binding material Concrete Portland cement concrete concrete Gypsum Concrete Asphalt Concrete In Portland cement concrete,

Influence from ingredients Influence from ingredients W/C W/C Quantity of paste Quantity of paste Sp Sp Aggregates Aggregates Admixture Admixture Influence.

Chapter 5 Construction Mortar.

CONCRETE TECHNOLOGY LECTURE NOTES PROF. DR. KAMBİZ RAMYAR

 Composite structure Composite structure  Strength theory Strength theory  Factors in affecting φ and C Factors in affecting φ and C § 9.2 Composite.

Cement: TYPE I, Specific Gravity=3.15 Coarse Aggregate: (BSG)SSD= 2.70

© Nuffield Foundation 2011 Nuffield Free-Standing Mathematics Activity Ratios.

Chapter 5 Construction Mortar. There are two methods to design mix of mortar  Consult table–based on experience  Calculation–consult with JGJ

QUALITY CONTROL OF CONSTRUCTION MATERIALS (Cement) by K. RAMESH Research Officer, Engineering Materials Laboratory, A.P. Engineering Research Laboratories,

 Deformation in load and damage process:  Damage type under compressive load  Original crack  Damage process-one-axis static compression §4.4.2 Deformation.

Drying of concrete Exercise 10. Evaporation of water from K30 concrete Evaporated water kg/m 3.

Introduction  Civil Engineering Materials -Concrete, Steel, Pavement  Construction Materials Timber, Glass, Aluminum, Paint, Plastic, Masonry, Ceramic.

Chapter 4 Ordinary Concrete. §4.2 Ingredient of Ordinary Concrete Cement4.2.1 Cement Aggregate Water Concrete Admixture.

 Mix Proportion  Tasks  Basic Requirements  Principle  Steps and Methods  Design of Preliminary Mix  Ascertaining the basic mix proportion  Laboratory.

JUST IN TIME MIXTURE PROPORTIONING Ken W. Day Consultant, ConAd Australia.

Influence from ingredients Influence from ingredients W/C W/C Quantity of paste Quantity of paste Sp Sp Aggregates Aggregates Admixture Admixture Influence.

Chapter 5 Construction Mortar. Chapter 5 §5. 3 Technical Properties Mobility (consistency) Water retentivity Strength Durability.

Types of Concrete Mixes

Necessary Information Required compressive strength at 28days: 30 Mpa Type of structure: mass concrete, beam, column. Maximum size of aggregate: 20 mm.

Drying Shrinkage Presentation By Savita Goel May 17, 2002.

ER. HIRALAL AGRAWAL EXECUTIVE ENGINEER.  Used for determining the Abrasion/LA value of aggregates.  This machine is for determining the resistance to.

SUBMITTED BY A.SHRIPATHY III-CIVIL ENGINEERING TAMILNADU COLLEGE OF ENGINEERING.

CVL 2407 Faculty of Applied Engineering and Urban Planning Civil Engineering Department 2 nd Semester 2013/2014 Dr. Eng. Mustafa Maher Al-tayeb.

 Experimental Part.  Data Collection and Analysis.  Conclusions and Recommendations.

Chapter 8 Design of Concrete Mixes Total 611. The basic procedure for mix design is applicable to concrete for most purposes including pavements. Concrete.

Cement and Concrete Concrete is an artificial conglomerate,with the following constituents: Cement Aggregate Water Cement replacements and admixtures.

By: Salah Al-Fahad, Ibrahim Nasser, Ali Baslama, Ahmed Alrashed

CONCRETE MIX DESIGN.

MODULE 4 BUILDING MATERIALS.

Ultra High Performance Concrete (UHPC)

11th International Conference on

A STUDY ON HIGH PERFORMANCE CONCRETE WITH FLY ASH AND SILICA POWDER

G.GUNA….SRVEC DEPARTMENT OF CIVIL ENGINEERING

Water - Cement Ratio.

Nagarjuna college of engineering and technology

Presentation transcript:

Chapter 5 Construction Mortar

§5. 3 Technical Properties Chapter 5 §5. 3 Technical Properties Mobility (consistency) Water retentivity Strength Durability

Strength In order to assure the strength of whole structure, there is certain requirements for the strength of masonry mortar for foundation, walls, columns etc. Technical Properties

Strength Compressive strength average f2(design strength) and strength grade Compressive strength average f2 (design strength) The pressure of cube specimen (the length of 70.7), cured in standard condition, aged of 28, has 85% strength guaranty. (Temp=20C±) The standard condition of hydraulicity cementitious material : 24± 5℃, Rh>90%curing 28d in humidity, 20±3℃, humidity Rh=60～80%

Fig5.3.2 stirring meter of mortar

Compressive Strength Average Strength Grade Strength Grade According to compressive strength average f2, mortar can be divided into 6 grades: M2.5 M5 M7.5 M10 M15 M20 Compressive Strength Average M 5 Mortar

Strength Choice of grade Technical Properties Choices of grade, considering more force in size environment importance of project Usually grades are M2.5～M10 M15 , M20 are used in significant structure Technical Properties

Strength Strength formula and influencing factors The major differences between the influencing factors of concrete are Lacking coarse aggregate; Setting hardening and the process of increasing strength are influenced by hygrophanous beds, that is to say, different mortar strengths for different beds.

Strength formula and influencing factors Dense substrate Dense substrate (Imhygrophanous beds-Stone) Similar to concrete, strength lies on cement strength and W/C. Formula fmo=Afce(C/W－B) fce—28d survey compressive strength of cement (MPa) fmo —28 day strength of mortar (N/mm2 or MPa) A,B—empirical coefficient (according to testing statisticdata) C/W—water cement ratio

Qc—cement quantity in mortar (Kg/m³) Strength formula and influencing factors Porous substrate Porous substrate (Hygrophanous beds) Different from concrete, strength lies on cement strength and quantity. Formula fmo=A·fce·Qc/1000+B Qc—cement quantity in mortar (Kg/m³) fce—survey cement strength A,B—empirical coefficient

Strength formula and influencing factors Empirical coefficient A,B can be chosen from Tab5.3.2 Tab5.3.2 Empirical Coefficient A,B A B Cement Mix Mortar 1.50 -4.25 Cement Mortar 1.03 3.5

Strength formula and influencing factors Explanation Why the strength of mortar in porous substrate lies on cement quantity porous substrate absorb water for mortar while construction. Water remained in substrate depends on cement quantity. For the same reason, the actual W/C depends on cement quantity. So the strength of mortar in porous substrate depends on cement quantity, not W/C.

Strength formula and influencing factors Note Mortar strength formula is much immature, changes according to construction materials dosage, material properties in different areas, mixing methods, and can be modified according to local experience and data.