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Effect on Compressive Strength of Concrete by Addition of Polypropylene Fiber in M20 Grade of Concrete

By
1. Gursharan Singh
2. Er Harish Kumar
3. Professor Geetinder Kaur
4. Professor jaspreet Singh
Department of Civil Engineering and Technology.
Guru Kashi University. Talwandi Sabo, Punjab, India

Abstract- The paper deals with the effects of addition of various proportions of polypropylene fiber on the properties of high strength concrete m20 mixes.An experimental program was carried out to explore its effects on compressive strength under different curing condition. the main aim of the investigation program is to study the effect of polypropylene fiber mix by varying content such as 0%,0.5%,1%,1.5%,2% and find the optimum polypropylene fiber content.the concrete specimen were tested at different age level for mechanical properties of concrete name compressive strength of the concrete .a detailed study was carried out of curing conditions.the increase were compressive strength

KEYWORDS-Ordinary portland cement,polypropylene fiber, different curing condition.

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Effect of Locust Bean Pod Extract As Water Reducing Admixture On The Compressive Strength Of Concrete.

By
ALFA UMAR
BSc. Civil engineering
Kaaf University College

ABSTRACT
This project present the investigatory result on the use of locust bean pod extract (LBPE) as a replacement for water on the Compressive strength of concrete. The locust bean pod is a waste material that is normally discarded after the seed have been harvested. 60 cubes of blocks of size 150 x 150 x 150mm were produced using locust bean pod extract as a blinder in concentration of 0, 0.15, 1.0, 1.5, 2.0 and 2.5kg/l respectively. The cubes without locust bean pod extract were used as control. The whole cube were cured under atmospheric condition in the laboratory and their compressive were determined. It was found that locust bean pod extract can significantly increase the compressive strength of the concrete block by 78.57% and that the concentration of the locust bean pod extract, the greater the compressive strength of the concrete cubes.

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Mix design M25 Grade designed as per IS 10262:2009 & IS 456:2000

(FOR BANGAlORE REGION)
DESIGNED By: G.PRABHAKARAN M.TECh, QA/QC ENGINEER

Mix proportioning for a concrete of M25 grade is given in A·I to A-ll.
A·I STIPULATIONS FOR PROPORTIONING

a) Grade designation : M25
b) Type of cement : OPC 53 Grade conforming IS 12269
c) Maximum nominal size of aggregate : 20mm
d) Minimum cement content : 300 kg/m3 (IS 456:2000)
e) Maximum water-cement ratio : 0.50 (Table 5 of IS 456:2000)
f) Workability : 100-120mm slump
g) Exposure condition : Moderate (For Reinforced Concrete)
h) Method of concrete placing : Pumping
j) Degree of supervision : Good
k) Type of aggregate : Crushed Angular Aggregates
m) Maximum cement content : 340 kg/m3
n) Chemical admixture type : Super Plasticizer ECMAS HP 890

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Mix design M30 Grade designed as per IS 10262:2009 & IS 456:2000

(FOR BANGAlORE REGION)
DESIGNED By: G.PRABHAKARAN M.TECh, QA/QC ENGINEER

Mix proportioning for a concrete of M30 grade is given in A·I to A-ll.
A·I STIPULATIONS FOR PROPORTIONING

a) Grade designation : M30
b) Type of cement : OPC 53 Grade conforming IS 12269
c) Maximum nominal size of aggregate : 20mm
d) Minimum cement content : 320 kg/m3 (IS 456:2000)
e) Maximum water-cement ratio : 0.45 (Table 5 of IS 456:2000)
f) Workability : 100-120mm slump
g) Exposure condition : Moderate (For Reinforced Concrete)
h) Method of concrete placing : Pumping
j) Degree of supervision : Good
k) Type of aggregate : Crushed Angular Aggregates
m) Maximum cement content : 360 kg/m3
n) Chemical admixture type : Super Plasticizer ECMAS HP 890

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Mix design M35 Grade designed as per IS 10262:2009 & IS 456:2000

(FOR BANGAlORE REGION)
DESIGNED By: G.PRABHAKARAN M.TECh, QA/QC ENGINEER

Mix proportioning for a concrete of M35 grade is given in A·I to A-ll.
A·I STIPULATIONS FOR PROPORTIONING

a) Grade designation : M35
b) Type of cement : OPC 53 Grade conforming IS 12269
c) Maximum nominal size of aggregate : 20mm
d) Minimum cement content : 340 kg/m3 (IS 456:2000)
e) Maximum water-cement ratio : 0.45 (Table 5 of IS 456:2000)
f) Workability : 100-120mm slump
g) Exposure condition : Moderate (For Reinforced Concrete)
h) Method of concrete placing : Pumping
j) Degree of supervision : Good
k) Type of aggregate : Crushed Angular Aggregates
m) Maximum cement content : 390 kg/m3
n) Chemical admixture type : Super Plasticizer ECMAS HP 890

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