Microstructure and Mechanical Properties of Cement/Fly Ash/Natural Rubber Composites

The physical and mechanical properties of Portland cement (PC) - natural rubber latex (NRL) - fly ash (FA) composites have been investigated. The latex per cement ratios that use in this experiment are 0, 5, 7.5 and 10% by weight of cement. Portland cement (PC) was partially replaced with fly ash 0-40% by weight of binder. Water to cement ratio were used in range of 0.305-0.385 (by weight not include water in latex). Nonionic surfactant was added in cement before mixed with natural rubber latex. In addition, to provide latex from natural rubber latex, the ammonia solution is added into natural rubber. The specimens were packing into an iron mold which sample size of 4x4x16 cm3. Moreover, the PC-NRL-FA composites were cured in water for 7 and 28 days at room temperature before measurement. Then, mechanical properties (flexural strength) and microstructure were studied.

Download Full-text

Physical and Mechanical Properties of Cement/Natural Rubber Latex/Rice Husk Ash Composites

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.804.124 ◽

2015 ◽

Vol 804 ◽

pp. 124-128

Author(s):

Nittaya Jaitanong ◽

Tanapong Chaipunti

Keyword(s):

Mechanical Properties ◽

Portland Cement ◽

Natural Rubber ◽

Rice Husk ◽

Rice Husk Ash ◽

Natural Rubber Latex ◽

Physical And Mechanical Properties ◽

Ammonia Solution ◽

Rubber Latex ◽

Cement Ratio

The microstructure and mechanical properties of Portland cement (PC)- natural rubber latex (NRL)- rice husk ash (RHA) composites have been investigated. The proportions of PC-NRL-RHA composites with NRL to cement ratio (NRL/C) that use in this experiment were 0, 0.10, 0.15 and 0.20 respectively. Portland cement (PC) was partially replaced with rice husk ash at 20% by weight of binder. The rice husk ash (RHA) was ground for 180 minutes before using. Water to cement ratio (W/C) equal of 0.5 by weight not include water in NRL. Nonionic surfactant was added in cement before mixed with NRL. In addition, to provide latex from natural rubber, the ammonia solution is added into natural rubber. The specimens were casting in standard mold which samples size of 50x50x50 and 40x40x160 mm3 respectively. Moreover, the PC-NRL-RHA composites were cured in water for 3, 7 and 28 days at room temperature before measurement. Then, mechanical properties (compressive strength and flexural strength) and microstructure were studied.

Download Full-text

Mechanical Properties of Natural Rubber and Chloroprene Rubber Latex Blends

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.239-242.1601 ◽

2011 ◽

Vol 239-242 ◽

pp. 1601-1604 ◽

Cited By ~ 1

Author(s):

Xiao Xue Liao ◽

Hai Sheng Tan ◽

Ming Chao Luo ◽

Bing Tang ◽

Shuang Quan Liao ◽

...

Keyword(s):

Mechanical Properties ◽

Natural Rubber ◽

Natural Rubber Latex ◽

Physical And Mechanical Properties ◽

Epoxidized Natural Rubber ◽

Latex Film ◽

Rubber Latex ◽

Oil Resistance ◽

Chloroprene Rubber

The effects of the ratios of natural rubber latex (NRL)and chloroprene rubber latex(CRL) and the type of compatibilizer on physical and mechanical properties of latex film were researched.The oil resistance of vulcanized latex film was tested. The compatibility of the latex blends was also analyzed by TG/DTG method.The results showed that properties of latex film were best when ratio of NRL/CRL was 75/25. As the CRL content increased, oil resistance of latex film was improved. Epoxidized natural rubber latex improved compatibility of NRL and CRL blends.

Download Full-text

Enhancement of Properties of Coir Geotextiles by Natural Rubber Latex Coating

CORD ◽

10.37833/cord.v27i1.119 ◽

2011 ◽

Vol 27 (1) ◽

pp. 8

Author(s):

U.S. Sarma

Keyword(s):

Mechanical Properties ◽

Comparative Study ◽

Natural Rubber ◽

Natural Rubber Latex ◽

Physical And Mechanical Properties ◽

Rubber Latex ◽

Engineering Applications ◽

Superior Mechanical Properties ◽

Bio Engineering

Coir geotextiles find application in revegetation of slopes by stabilizing the soil through erosion control. It has been found that the longevity of coir geotextiles although highest among all the natural fibres, it is required to last for at least 5 years so as to sustain the vegetation on the slopes for a long term solution. Normally it is found that coir geotextiles lose their 50% strength in 6 months in contact with soil, therefore it is required to strengthen the coir geotextiles. This work involves the coating of coir geotextiles with natural rubber latex which could enhance the longevity of coir geotextiles in various civil/bio engineering applications. The rubber latex coated coir geotextiles which are eco-friendly have superior mechanical properties and better durability compared to the conventional uncoated coir geotextiles. This paper reports the coating of coir geotextile using natural rubber latex and a comparative study of the physical and mechanical properties of the treated and untreated coir geotextiles.

Download Full-text