Connect with us

Heartland

Effects of Different Types of Fibers on the Physical and Mechanical Properties of MICP-Treated Calcareous Sand

Microbial-induced calcite precipitation (MICP) has been a promising method to improve geotechnical engineering properties through the precipitation of calcium carbonate (CaCO(3)) on the contact and surface of soil particles in recent years. In the present experiment, water absorption and unconfined compressive strength (UCS) tests were carried out to investigate the effects of three different fiber types (glass fiber, polyester fiber, and hemp fiber) on the physical and mechanical properties of…

Republished by Plato

Published

on

Microbial-induced calcite precipitation (MICP) has been a promising method to improve geotechnical engineering properties through the precipitation of calcium carbonate (CaCO3) on the contact and surface of soil particles in recent years. In the present experiment, water absorption and unconfined compressive strength (UCS) tests were carried out to investigate the effects of three different fiber types (glass fiber, polyester fiber, and hemp fiber) on the physical and mechanical properties of MICP-treated calcareous sand. The fibers used were at 0%, 0.10%, 0.15%, 0.20%, 0.25%, 0.30%, 0.35%, and 0.40% relative to the weight of the sand. The results showed that the failure strain and ductility of the samples could be improved by adding fibers. Compared to biocemented sand (BS), the water absorption of these three fiber-reinforced biocemented sands were, respectively, decreased by 11.60%, 21.18%, and 7.29%. UCS was, respectively, increased by 24.20%, 60.76%, and 6.40%. Polyester fiber produced the best effect, followed by glass fiber and hemp fiber. The optimum contents of glass fiber and polyester fiber were 0.20% and 0.25%, respectively. The optimum content of hemp fiber was within the range of 0.20-0.25%. Light-emitting diode (LED) microscope and scanning electron microscope (SEM) images lead to the conclusion that only a little calcite precipitation had occurred around the hemp fiber, leading to a poor bonding effect compared to the glass and polyester fibers. It was therefore suggested that polyester fiber should be used to improve the properties of biocemented sand.

Keywords: bonding effect; glass, polyester, and hemp fibers; microbial-induced calcite precipitation (MICP); unconfined compressive strength (UCS); water absorption.

Source: https://pubmed.ncbi.nlm.nih.gov/33430360/?utm_source=no_user_agent&utm_medium=rss&utm_campaign=pubmed-2&utm_content=18gXB4q-CV5o0kQDSCt3HqwNcsXbn1PxqekJlWJaIbT8zAG16G&fc=20200804213200&ff=20210112123108&v=2.14.2

Heartland

Topical CBD feels amazing

Republished by Plato

Published

on

I’ve gotten some coconut oil from LN that I’ve been using topically. Really amazed with how well it works. Only way I can describe it is – it’s as if my skin is “on CBD”. It just feels like a soft warm glow that seems to radiate everywhere.

I’m not sure if it’s just me.. but I seem to feel it in more areas of my body than just the area of application- has anyone felt the same?

Like if I put it on my face, head (I’m bald), and lower back I seem to feel it’s affects radiate through my whole body. Especially the whole upper body area.

I’m actually using CBD way more topically than internally

Source: https://www.reddit.com/r/CBD/comments/l2hun0/topical_cbd_feels_amazing/

Continue Reading

Heartland

What’s the best/strongest CBD vape?

Republished by Plato

Published

on

I’m needing a strong CBD vape. The vapes I have now don’t really do much for me even if I take multiple hits. I’m looking to ease my anxiety when I start to dwell or worry over something, and also for night time use. The vapes I use are well known brands who others love. I won’t name those brands because I don’t want to make them look bad, cause it’s not them it’s me (LOL). Flower isn’t an option because of the smell unfortunately. So what’s everyone’s recommendations?

Source: https://www.reddit.com/r/CBD/comments/l2h3d4/whats_the_beststrongest_cbd_vape/

Continue Reading

Heartland

General oil question

Republished by Plato

Published

on

When taking oils orally, le general rule of thumb is to leave it under your tongue for 30 sec minimum.
My question is, will i get a better mellow if i let le oil marinate longer than 30sec?
And if so is there a certain amount of time that passes le point of no return?

Source: https://www.reddit.com/r/CBD/comments/l2h0ja/general_oil_question/

Continue Reading
News13 hours ago

Jay-Z Announces Launch of Investment Fund To Aid Minority Cannabis Entrepreneurs

News5 days ago

What are Some Major Factors to Keep in Mind When Buying CBD Vape Oil?

Heartland2 days ago

MagicMed: Bringing the Drug Candidate Library Model to Psychedelics

Heartland5 days ago

Investors in This Cannabis Stock Are Leaving $800 Million on the Table

Heartland5 days ago

What’s New With Cannabis Stocks for the Week Ending 01/15/21

Heartland4 days ago

What is Delta-8 THC? Everything You Need to Know

Heartland4 days ago

Alcanna to Spin Out Cannabis Business and Pursue Value Segment Strategy

Heartland1 day ago

10 Herbs That Can Help With Sleep

News4 days ago

CBD News: NIHC chairman appointed to board advising U.S. on trade policy

News3 days ago

CBD News: Restrictions on shipment of vaping products could impact hemp industry

Heartland14 hours ago

Anybody ever bought from highkind? Review?

Heartland4 days ago

Fire & Flower Expands Free Same-Day Delivery Across Its Ontario Network

Heartland3 days ago

Heavy metals in cbd

Heartland3 days ago

CBD Blog: News, Info & Tips

Heartland2 days ago

Nordic Oil FAQ: The CBD questions you’ve always wanted answers to

Heartland3 days ago

Informational blogs about CBD and Hemp

Heartland3 days ago

Hemp & CBD Blog | Northeast Kingdom Hemp

Heartland4 days ago

A Beginners Guide to Pests

News3 days ago

Illinois Collects $62 Million in Cannabis Revenue to Support Neighborhoods

Heartland3 days ago

Blog – Global Cannabinoids | CBD Wholesale & Bulk | White Label | Private Label

Heartland3 days ago

CBD Blogs | Ergo Hemp Co.

Heartland1 day ago

19 in texas I know it is technically legal to possess hemp flower I’m wondering about the penalties of possession under 21

Heartland14 hours ago

Cannabis Antibiotics: Answer to Disease-Resistant Bacteria

Heartland4 days ago

Clinical and biochemical heterogeneity of Parkinson’s disease

Heartland3 days ago

Uncategorized3 days ago

10xPURE-GOLD CBDa Muscle & Joint Relief Cream

Heartland3 days ago

Easy Day Hemp Blog

News4 days ago

BC Craft Supply Co Announces Letter of Intent with Psilocybin Research and Development Company Ava Pathways

Heartland4 days ago

How Red White & Bloom Established A Base In Michigan’s Cannabis Scene—And Keeps Expanding

News3 days ago

CBD News: Circle K wants to block hemp trademark that resembles its own

Trending

A Cloud Nine Capital Entity Copyright © 2020 – All Rights Reserved Proudly Made in America